Understanding the effects of radiation on reconfigurable phase change materials

David Adams was elected Fellow and President of American Vacuum Society: Science and Technology of Materials, Interfaces and Processing in 2023.
David Adams was elected Fellow and President of American Vacuum Society: Science and Technology of Materials, Interfaces and Processing in 2023.

Chalcogenide thin films that undergo reversible phase changes show promise for next-generation nanophotonics, metasurfaces, and other emerging technologies. This general class of thin films can be switched rapidly between amorphous and crystalline phases which exhibit contrasted optical and electronic states. Despite the successful development of benchmark Ge2 Sb2 Te5 for some applications, there is a desire to identify new materials with improved performance. The Sandia LDRD team focused on the behavior of sputter-deposited (Ge2 Sb2Te5)xC1-x [0 < 1-x < 0.12] films and investigated the phase stability and key unknowns of several promising quaternary compositions.  

This study confirmed increased crystallization temperatures of C-doped Ge2 Sb2 Te5 consistent with enhanced amorphous phase stability. Additional experiments involving high energy, and heavy ion irradiation explored the stability of films subjected to collision-induced disordering. Detailed characterization showed that crystalline films can be amorphized by ion irradiation (metamictization) and quaternary addition affects radiation tolerance. This study provides new insight into chalcogenide phase stability offering design pathways for future applications. The project involved collaborations with students and faculty from Sandia Alliance partner Purdue University and National/Regional partner University of Florida. This work generated multiple publications including one extensive article in the Journal of Applied Physics. PI David Adams was also recently elected Fellow and President of American Vacuum Society: Science and Technology of Materials, Interfaces and Processing. 

Graphic showing plan view transmission electron micrographs and electron diffraction patterns comparing a non-doped film with three films of varied, doped composition.
Plan view transmission electron micrographs and electron diffraction patterns comparing a non-doped film with three films of varied, doped composition. Films are shown after deposition, heating to crystallize, and MeV Au ion irradiation to high dose. Lack of distinct spots in the diffraction patterns post-irradiation is evidence of amorphization.

Sandia researchers linked to work 

  • David Adams 
  • Robin Jacobs-Gedrim 
  • Thomas Beechem III 
  • Catherine Sobczak 
  • Khalid Hattar 

Sponsored by 

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Associated Publications

  • Stangebye, S., Lei, C., Kinghorn, A., robertson, I., Kacher, J., Hattar, K., & Hattar, K. (2022). Dynamics of the gold–silicon eutectic reaction studied at limited length scales using in situ $\mathrm{TEM}$ and $\mathrm{STEM}$. Journal of Materials Research, 37(21), pp. 3842-3854. https://doi.org/10.1557/s43578-022-00761-5 Publication ID: 80348
  • Pfeifer, T., Tomko, J., Hoglund, E., Scott, E.A., Hattar, K., Huynh, K., Liao, M., Goorsky, M., Hopkins, P., & Hopkins, P. (2022). Measuring sub-surface spatially varying thermal conductivity of silicon implanted with krypton. Journal of Applied Physics, 132(7). https://doi.org/10.1063/5.0094876 Publication ID: 80092
  • Abere, M., Beason, M., Reeves, R., Rodriguez, M.A., Kotula, P., Sobczak, C., Son, S., Yarrington, C., Adams, D., & Adams, D. (2022). The growth and nanothermite reaction of 2Al/3NiO multilayer thin films. Journal of Applied Physics, 132(3). https://doi.org/10.1063/5.0096787 Publication ID: 80024
  • Buddhanoy, M., Sakib, S., Surendranathan, U., Wasiolek, M., Hattar, K., Ray, B., & Ray, B. (2022). New Total-Ionizing-Dose Resistant Data Storing Technique for NAND Flash Memory. IEEE Transactions on Device and Materials Reliability, 22(3), pp. 438-446. https://doi.org/10.1109/tdmr.2022.3189673 Publication ID: 80949
  • Clark, T., Taylor, C.A., Barr, C.M., Hattar, K., & Hattar, K. (2022). Sample Preparation and Experimental Design for In Situ Multi-Beam Transmission Electron Microscopy Irradiation Experiments. Journal of visualized experiments : JoVE, (184). https://doi.org/10.3791/61293 Publication ID: 74481
  • Barr, C., Chen, E., Nathaniel, J., Lu, P., Adams, D., Dingreville, R., Boyce, B., Hattar, K., Medlin, D., & Medlin, D. (2022). Irradiation-induced grain boundary facet motion: In situ observations and atomic-scale mechanisms. Science Advances, 8(23). https://doi.org/10.1126/sciadv.abn0900 Publication ID: 80682
  • Kittell, D.E., Abere, M., Yarrington, C.D., Adams, D., & Adams, D. (2022). 3D simulations of spinlike flames in Co/Al multilayers with enhanced conduction losses. Combustion and Flame, 240. https://doi.org/10.1016/j.combustflame.2021.111952 Publication ID: 79969
  • Lang, E., Burns, K., Wang, Y., Kotula, P., Kustas, A., Rodriguez, S., Aitkaliyeva, A., Hattar, K., & Hattar, K. (2022). Compositional Effects of Additively Manufactured Refractory High‐Entropy Alloys under High‐Energy Helium Irradiation. Nanomaterials, 12(12). https://doi.org/10.3390/nano12122014 Publication ID: 80865
  • Getto, E., Johnson, M., Maughan, M., Nathan, N., McMahan, J., Baker, B., Knipling, K., Briggs, S., Hattar, K., Swenson, M., & Swenson, M. (2022). Friction stir welding and self-ion irradiation effects on microstructure and mechanical properties changes within oxide dispersion strengthened steel $\mathrm{MA956}$. Journal of Nuclear Materials, 567. https://doi.org/10.1016/j.jnucmat.2022.153795 Publication ID: 80787
  • Yang, C., Olsen, T., Lau, M.L., Smith, K.A., Hattar, K., Sen, A., Wu, Y., Hou, D., Narayanan, B., Long, M., Wharry, J.P., Xiong, H., & Xiong, H. (2022). In situ ion irradiation of amorphous TiO2 nanotubes. Journal of Materials Research, 37(6), pp. 1144-1155. https://doi.org/10.1557/s43578-022-00516-2 Publication ID: 80513
  • Buddhanoy, M., Kumari, P., Surendranathan, U., Wasiolek, M., Hattar, K., Ray, B., & Ray, B. (2022). Total Ionizing Dose Effects on Long-Term Data Retention Characteristics of Commercial 3-D NAND Memories. IEEE Transactions on Nuclear Science, 69(3), pp. 390-396. https://doi.org/10.1109/tns.2021.3124484 Publication ID: 76548
  • Surendranathan, U., Wasiolek, M., Hattar, K., Fleetwood, D.M., Ray, B., & Ray, B. (2022). Total Ionizing Dose Effects on Read Noise of MLC 3-D NAND Memories. IEEE Transactions on Nuclear Science, 69(3), pp. 321-326. https://doi.org/10.1109/tns.2021.3140204 Publication ID: 79948
  • Kumari, P., Surendranathan, U., Wasiolek, M., Hattar, K., Bhat, N., Ray, B., & Ray, B. (2022). Analytical Bit-Error Model of NAND Flash Memories for Dosimetry Application. IEEE Transactions on Nuclear Science, 69(3), pp. 478-484. https://doi.org/10.1109/tns.2021.3125652 Publication ID: 76707
  • Kiani, M.T., Gan, L.T., Traylor, R., Yang, R., Barr, C.M., Hattar, K., Fan, J.A., Wendy Gu, X., & Wendy Gu, X. (2022). In Situ TEM tensile testing of bicrystals with tailored misorientation angles. Acta Materialia, 224. https://doi.org/10.1016/j.actamat.2021.117505 Publication ID: 76955
  • Flicker, D., Carney, J., Cusentino, M., Hattar, K., Steinkamp, M., Treadwell, L., & Treadwell, L. (2022). Assessment of Sandia’s 2021 Pilot Program for Research Traineeships to Broaden and Diversify Fusion Energy Science: Development and Rapid Screening of Refractory Multi-Principal Elemental Composites for Plasma Facing Components. https://doi.org/10.2172/1855066 Publication ID: 79970
  • Dennett, C.A., Dacus, B.R., Barr, C.M., Clark, T., Bei, H., Zhang, Y., Short, M.P., Hattar, K., & Hattar, K. (2021). The dynamic evolution of swelling in nickel concentrated solid solution alloys through in situ property monitoring. Applied Materials Today, 25. https://doi.org/10.1016/j.apmt.2021.101187 Publication ID: 75813
  • Daly, L., Lee, M.R., Hallis, L.J., Ishii, H.A., Bradley, J.P., Bland, P.A., Saxey, D.W., Fougerouse, D., Rickard, W.D.A., Forman, L.V., Timms, N.E., Jourdan, F., Reddy, S.M., Salge, T., Quadir, Z., Christou, E., Cox, M.A., Aguiar, J.A., Hattar, K., … Thompson, M.S. (2021). Solar wind contributions to Earth’s oceans. Nature Astronomy, 5(12), pp. 1275-1285. https://doi.org/10.1038/s41550-021-01487-w Publication ID: 79373
  • Wang, F., Yan, X., Chen, X., Snyder, N., Nastasi, M., Hattar, K., Cui, B., & Cui, B. (2021). Pulsed electric current joining of oxide-dispersion-strengthened austenitic steels. Journal of Materials Science, 56(34), pp. 19216-19227. https://doi.org/10.1007/s10853-021-06495-9 Publication ID: 75536
  • Hattar, K. (2021). TailoringHelium InducedBlistering in Tritide Materials [Conference Presenation]. https://doi.org/10.2172/1899487 Publication ID: 76520
  • Hattar, K., Lang, E., Dillon, S., & Dillon, S. (2021). Irradiation Creep and Fatigue Observed via In-situ Electron Microscopy [Conference Presenation]. https://doi.org/10.2172/1899488 Publication ID: 76706
  • Smyth, C., Cain, J., Lang, E., Madden, N., Hattar, K., Yan, X., Yuan, J., Bland, M., Ohta, T., Sangwan, V., Hersam, M., Chou, S., Lu, T., & Lu, T. (2021). Heavy Ion Irradiation Effects on MoS2 Memtransistors [Conference Presenation]. https://doi.org/10.2172/1899528 Publication ID: 76880
  • Burns, K., Hattar, K., Aitkaliyeva, A., & Aitkaliyeva, A. (2021). Direct Determination of the Thermal Expansion Coefficient of Low-dimensional MoS2 [Conference Poster]. https://doi.org/10.2172/1900568 Publication ID: 76990
  • Young, J.M., Byers, T.A., Lang, E., Singh, S., Glass, G.A., Hattar, K., Rout, B., & Rout, B. (2021). Synthesis of magnesiowüstite nanocrystallites embedded in an amorphous silicate matrix via low energy multiple ion implantations. Planetary and Space Science, 206. https://doi.org/10.1016/j.pss.2021.105319 Publication ID: 79761
  • Lang, E., Taylor, C., Parrish, R., Price, P., Madden, N., Tandon, R., Hattar, K., & Hattar, K. (2021). Effects of He on Nanoscale Mechanical Properties of Er [Conference Presenation]. https://doi.org/10.2172/1891434 Publication ID: 76165
  • Hattar, K., Hattar, K., Lang, E., Devaraj, A., Devaraj, A., Roach , C., Roach , C., Devaraj, A., Roach , C., & Roach , C. (2021). Comparing Neutron and Ion Irradiation by Atom Probe Tomography and In-situ Electron Microscopy [Slides] [Conference Presenation]. https://doi.org/10.2172/1888138 Publication ID: 75772
  • Zhang, X., Wang, F., Yan, X., Li, X.-Z., Hattar, K., Cui, B., & Cui, B. (2021). Nanostructured Oxide-Dispersion-Strengthened CoCrFeMnNi High-Entropy Alloys with High Thermal Stability. Advanced Engineering Materials, 23(9). https://doi.org/10.1002/adem.202100291 Publication ID: 78802
  • Jawaharram, G.S., Barr, C.M., Hattar, K., Dillon, S.J., & Dillon, S.J. (2021). Evidence for a high temperature whisker growth mechanism active in tungsten during in situ nanopillar compression. Nanomaterials, 11(9). https://doi.org/10.3390/nano11092429 Publication ID: 75787
  • Hummel, G., Patrizi, G., Young, A., Schroeder, K., Ruyack, A., Schiess, A., Finnegan, P., Adams, D., Nordquist, C., & Nordquist, C. (2021). Germanium Telluride Chalcogenide Switches for RF Applications. https://doi.org/10.2172/1821550 Publication ID: 75822
  • Adams, D. (2021). Basic Research of Intrinsic, Tamper Indication Markings and Patterns Defined by Pulsed Laser Irradiation: 2015 Annual Report IACRO 13-5897I (DTRA Project Year End Report). https://doi.org/10.2172/1813666 Publication ID: 78982
  • Vizoso, D., Kosmidou, M., Balk, T.J., Hattar, K., Deo, C., Dingreville, R., & Dingreville, R. (2021). Size-dependent radiation damage mechanisms in nanowires and nanoporous structures. Acta Materialia, 215. https://doi.org/10.1016/j.actamat.2021.117018 Publication ID: 78670
  • Hattar, K., Lang, E., Cunningham, W., Mathadhu, S., Trelewicz , J., & Trelewicz , J. (2021). In-situ Irradiation, Helium Implantation and Heating to Elucidate Mechanisms in Tungsten Alloys [Slides] [Conference Presenation]. https://doi.org/10.2172/1877560 Publication ID: 79374
  • Hattar, K., Lang, E., Taylor, C., Pratt, S., Nenoff, T.M., & Nenoff, T.M. (2021). Automated Crystal Orientation Mapping with a Liquid-Cell TEM [Conference Poster]. https://doi.org/10.2172/1884058 Publication ID: 79295
  • Lang, E., Homer, E., Bair, J., Marshall, M., Padilla, H., Boyce, B., Frazer, D., Hosemann, P., Hattar, K., & Hattar, K. (2021). In-situ TEM Cryoindentation of Nanocrystalline Copper [Conference Presenation]. https://doi.org/10.2172/1888433 Publication ID: 79207
  • Clark, T., Scott, E.A., Adams, D., Hattar, K., & Hattar, K. (2021). In-situ TEM irradiation induced amorphization of Ge2Sb2Te5 [Conference Presenation]. https://doi.org/10.2172/1889055 Publication ID: 79457
  • Adams, D., Saltonstall, C., Beechem, T., Abere, M., Sobczak, C., Yarrington, C.D., Kotula, P., Rodriguez, M.A., Goeke, R., & Goeke, R. (2021). (INVITED) Investigating a Few Remaining Unknowns of Reactive Multilayers affecting Ignition and Self-Propagating Reactions [Conference Poster]. https://www.osti.gov/biblio/1884116 Publication ID: 79053
  • Adams, D., Abere, M., Kotula, P., Yarrington, C.D., Sobczak, C., Saltonstall, C., Beechem, T., & Beechem, T. (2021). Investigating Transport Processes in Reactive Multilayer Films [Conference Poster]. https://www.osti.gov/biblio/1883530 Publication ID: 78984
  • Kumari, P., Surendranathan, U., Olszewska-Wasiolek, M., Hattar, K., Ray, B., & Ray, B. (2021). Total-Ionizing-Dose Effects on Long-term Data Retention Characteristics of Commercial 3D NAND Memories [Conference Poster]. https://doi.org/10.2172/1873468 Publication ID: 78897
  • Bennett, C., Xiao, T., Leonard, T., Alamdar, M., Manuel, J., Jacobs-Gedrim, R., Xue, L., Vizkelethy, G., Bielejec, E.S., Incorvia, J., Marinella, M., & Marinella, M. (2021). Investigation of Total Ionizing Dose on Domain-wall Magnetic Tunnel Junction Logic Devices (Presentation) [Conference Presenation]. https://doi.org/10.2172/1874876 Publication ID: 79031
  • Lang, E., Hooghan, K., Hattar, K., Richter, T., Nadzekya, A., & Nadzekya, A. (2021). Deciphering Liquid Metal Embrittlement and Altered FIB Damage Microstructures on Aluminum [Conference Presenation]. https://doi.org/10.2172/1875389 Publication ID: 79017
  • DelRio, F., Jones, M., Beechem, T., McDonald, A., Babuska, T., Dugger, M., Chandross, M., Argibay, N., Curry, J., & Curry, J. (2021). Tribochemical formation of diamond-like carbon films on catalytically-active noble alloys [Conference Presenation]. https://doi.org/10.2172/1877514 Publication ID: 79075
  • Dillon, S., Coffman, K., Grosso, R., Jawaharram, G., Feng, L., Ma, Y., Navarro dos Santos Mucillo, E., Hattar, K., Barr, C., Castro, R., Ouyang, J., Garcia, R., Abdeljawad, F., & Abdeljawad, F. (2021). Interfacial Transport Mechanisms Characterized using Ultrahigh Temperature in situ TEM Nanomechanical Testing [Conference Presenation]. https://doi.org/10.2172/1872514 Publication ID: 78785
  • Surendranathan, U., Olszewska-Wasiolek, M., Hattar, K., Fleetwood, D., Ray, B., & Ray, B. (2021). Total-Ionizing-Dose Effects on Read Noise of MLC 3D NAND Memories [Conference Poster]. https://doi.org/10.2172/1873467 Publication ID: 78896
  • Adams, D., Moody, N., Yarrington, C.D., & Yarrington, C.D. (2021). Basic Research of Intrinsic, Tamper-Indication Markings and Patterns Defined by Pulsed Laser Irradiation (2015 Update) [Conference Poster]. https://www.osti.gov/biblio/1889605 Publication ID: 78981
  • Scott, E.A., Perez, C., Saltonstall, C., Adams, D., Carter Hodges, V., Asheghi, M., Goodson, K.E., Hopkins, P.E., Leonhardt, D., Ziade, E., & Ziade, E. (2021). Simultaneous thickness and thermal conductivity measurements of thinned silicon from 100 nm to 17 μ m. Applied Physics Letters, 118(20). https://doi.org/10.1063/5.0050888 Publication ID: 78473
  • Abere, M., Yarrington, C.D., Kotula, P., McDonald, J.P., Adams, D., & Adams, D. (2021). Variable Laser Ignition Pathways in Al/Pt Reactive Multilayers across 10 Decades of Pulse Duration. Journal of Physical Chemistry C, 125(18), pp. 9756-9765. https://doi.org/10.1021/acs.jpcc.1c01776 Publication ID: 78387
  • Stangebye, S., Zhang, Y., Gupta, S., Hosseinian, E., Yu, F., Barr, C., Hattar, K., Pierron, O., Zhu, T., Kacher, J., & Kacher, J. (2021). Grain growth of nanocrystalline aluminum under tensile deformation: A combined in situ TEM and atomistic study. Materialia, 16. https://doi.org/10.1016/j.mtla.2021.101068 Publication ID: 78230
  • Jarzembski, A., Siddiqui, A., Goldflam, M., IssacRuiz, I., Beechem, T., & Beechem, T. (2021). A Re-Configurable Infrared MetasurfaceUtilizing Acoustoelectric-Induced Charge Aggregation in Graphene [Conference Presenation]. https://doi.org/10.2172/1871152 Publication ID: 78700
  • Kumari, P., Surendranathan, U., Wasiolek, M., Hattar, K., Bhat, N.P., Ray, B., & Ray, B. (2021). Radiation-Induced Error Mitigation by Read-Retry Technique for MLC 3-D NAND Flash Memory. IEEE Transactions on Nuclear Science, 68(5), pp. 1032-1039. https://doi.org/10.1109/tns.2021.3052909 Publication ID: 75178
  • Xiao, T.P., Bennett, C., Mancoff, F.B., Manuel, J., Hughart, D.R., Jacobs-Gedrim, R., Bielejec, E.S., Vizkelethy, G., Sun, J., Aggarwal, S., Arghavani, R., Marinella, M., & Marinella, M. (2021). Heavy-Ion-Induced Displacement Damage Effects in Magnetic Tunnel Junctions with Perpendicular Anisotropy. IEEE Transactions on Nuclear Science, 68(5), pp. 581-587. https://doi.org/10.1109/tns.2021.3057348 Publication ID: 77543
  • Ajantiwalay, T., Nagel, L., Maloy, S., Hattar, K., Mecholsky, J.J., Aitkaliyeva, A., & Aitkaliyeva, A. (2021). Investigation of hardening mechanisms and size effects in proton-irradiated HT-9 steels. Journal of Nuclear Materials, 548. https://doi.org/10.1016/j.jnucmat.2021.152866 Publication ID: 77312
  • Piontkowski, Z.T., Cleri, A., Saltonstall, C., McDonald, A., Ihlefeld, J., Maria, J., Beechem, T., & Beechem, T. (2021). Lattice Quality Limits Mobility in Donor Doped CdO [Conference Presenation]. https://doi.org/10.2172/1865257 Publication ID: 78222
  • Jarzembski, A., Siddiqui, A., Goldflam, M., IssacRuiz, I., Beechem, T., & Beechem, T. (2021). A Re-Configurable Infrared MetasurfaceUtilizing Acoustoelectric-Induced Charge Aggregation in Graphene [Conference Presenation]. https://doi.org/10.2172/1866054 Publication ID: 78249
  • Jarzembski, A., Siddiqui, A., Goldflam, M., Ruiz, I., Beechem, T., & Beechem, T. (2021). A Re-Configurable Infrared Metasurface Utilizing Acoustoelectric-Induced Charge Aggregation in Graphene [Conference Presenation]. https://doi.org/10.2172/1864498 Publication ID: 78176
  • Barr, C., Duong, T., Bufford, D., Molkeri, A., Heckman, N., Adams, D., Srivastava, A., Demkowicz, M., Boyce, B., Hattar, K., & Hattar, K. (2021). High-Cycle Fatigue In Situ in the Transmission Electron Microscope [Conference Presenation]. https://doi.org/10.2172/1863859 Publication ID: 78128
  • Hattar, K. (2021). Mechanical B ehavior of Irradiated M etals [Presentation]. https://www.osti.gov/biblio/1877534 Publication ID: 78156
  • Hattar, K., Jungjohann, K.L., & Jungjohann, K.L. (2021). Possibility of an integrated transmission electron microscope: enabling complex in-situ experiments. Journal of Materials Science, 56(9), pp. 5309-5320. https://doi.org/10.1007/s10853-020-05598-z Publication ID: 75137
  • Milne, Z., Jungjohann, K.L., Hattar, K., & Hattar, K. (2021). Combined-Extreme In Situ Experiments by Redesign of a Transmission Electron Microscope Pole-Piece Gap [Conference Presenation]. https://doi.org/10.2172/1855930 Publication ID: 77650
  • Liu, S., Marinella, M., Incorvia, J., Bennett, C., Xiao, T., Jacobs-Gedrim, R., & Jacobs-Gedrim, R. (2021). Radiation Hard Nonvolatile Memory and Logic Based on Magnetic Tunnel Junctions: Magnetic computing device simulations for neural network applications [Presentation]. https://www.osti.gov/biblio/1861011 Publication ID: 77847
  • Hattar, K. (2021). Deconvoluting Mechanism in Complex Environments via In-situ TEM [Conference Presenation]. https://doi.org/10.2172/1854440 Publication ID: 77480
  • Hong, D., Hattar, K., Li, N., Paranjape, H., Schaffer, J., Hinojos, A., Mills, M., Yu, T., Wang, Y., Anderson, P., & Anderson, P. (2021). Pseudoelastic Response of Ion-Implanted Nickel-Titanium Shape Memory Alloy: Combining Experimentation and Forward Modeling [Conference Presenation]. https://doi.org/10.2172/1854069 Publication ID: 77425
  • Barr, C.M., Foiles, S.M., Alkayyali, M., Mahmood, Y., Price, P., Adams, D., Boyce, B., Abdeljawad, F., Hattar, K., & Hattar, K. (2021). The role of grain boundary character in solute segregation and thermal stability of nanocrystalline Pt-Au. Nanoscale, 13(6), pp. 3552-3563. https://doi.org/10.1039/D0NR07180C Publication ID: 80588
  • Scott, E.A., Braun, J.L., Hattar, K., Sugar, J., Gaskins, J.T., Goorsky, M., King, S.W., Hopkins, P.E., & Hopkins, P.E. (2021). Probing thermal conductivity of subsurface, amorphous layers in irradiated diamond. Journal of Applied Physics, 129(5). https://doi.org/10.1063/5.0038972 Publication ID: 75061
  • Scott, E.A., Hattar, K., Braun, J., Sugar, J., King, S., Goorsky, M., Hopkins, P., & Hopkins, P. (2021). Phase-dictated thermal conductivity response in carbon systems exposed to ion irradiation [Conference Presenation]. https://doi.org/10.2172/1847031 Publication ID: 77324
  • Parrish, R., Bufford, D., Frazer, D., Taylor, C., Gutierrez-Kolar, J., Buller, D., Boyce, B., Hattar, K., & Hattar, K. (2021). Exploring Coupled Extreme Environments via In-situ Transmission Electron Microscopy. Microscopy Today, 29(1), pp. 28-34. https://doi.org/10.1017/s1551929520001595 Publication ID: 77486
  • Taylor, C., Hattar, K., & Hattar, K. (2021). Hydrogen Isotope Effects in Materials [Presentation]. https://www.osti.gov/biblio/1843543 Publication ID: 75193
  • Brown, J.L., Adams, D., Scott Alexander, C., Wise, J.L., Reinhart, W., & Reinhart, W. (2021). Thin film graded density impactors for high rate off-Hugoniot loading: Application to Ta strength [Conference Poster]. 2019 15th Hypervelocity Impact Symposium, HVIS 2019. https://doi.org/10.1115/HVIS2019-083 Publication ID: 67952
  • Islam, Z., Barr, C.M., Hattar, K., Haque, A., & Haque, A. (2021). Defect annihilation in heavy ion irradiated polycrystalline gold. Materials Letters, 282. https://doi.org/10.1016/j.matlet.2020.128694 Publication ID: 70943
  • Guo, Q., Gu, Y., Barr, C.M., Koenig, T., Hattar, K., Li, L., Thompson, G.B., & Thompson, G.B. (2020). In situ indentation and high cycle tapping deformation responses in a nanolaminate crystalline/amorphous metal composite. Materials Science and Engineering: A, 798. https://doi.org/10.1016/j.msea.2020.140074 Publication ID: 74598
  • Hattar, K. (2020). Exploring Extreme Environments via In-situ Electron Microscopy [Conference Presenation]. https://doi.org/10.2172/1830990 Publication ID: 71673
  • Grosso, R.L., Vikrant, K.S.N., Feng, L., Muccillo, E.N.S., Muche, D.N.F., Jawaharram, G.S., Barr, C.M., Monterrosa, A.M., Castro, R.H.R., García, R.E., Hattar, K., Dillon, S.J., & Dillon, S.J. (2020). Ultrahigh temperature in situ transmission electron microscopy based bicrystal coble creep in Zirconia II: Interfacial thermodynamics and transport mechanisms. Acta Materialia, 200, pp. 1008-1021. https://doi.org/10.1016/j.actamat.2020.08.070 Publication ID: 74723
  • Jarzembski, A., Goldflam, M., Siddiqui, A., Ruiz, I., Beechem, T., & Beechem, T. (2020). Enhancing Graphene Plasmonic Device Performance via its Dielectric Environment [Conference Presenation]. https://doi.org/10.2172/1830054 Publication ID: 71618
  • Mathaudhu, S., Salvador, H., Clark, T., Ramos, &., Shahrezaei, S., Hattar, K., & Hattar, K. (2020). Gradatim Ferociter : Exploring the Grain Size Stability of Heterogeneous Copper in Thermal Mechanical and Radiation Environments [Conference Presenation]. https://doi.org/10.2172/1831018 Publication ID: 71565
  • Fuller, E., Fuller, E., Li, Y., Agarwal, S., Jacobs-Gedrim, R., James, C., Marinella, M., & Marinella, M. (2020). Floating-gate memory based on ion-insertion electrodes for neuromorphic computing [Conference Poster]. https://www.osti.gov/biblio/1831565 Publication ID: 71756
  • Scott, E.A., Ziade, E., Saltonstall, C., McDonald, A., Rodriguez, M.A., Hopkins, P., Beechem, T., Adams, D., & Adams, D. (2020). Thermal conductivity of (Ge2Sb2Te5)1–xCx phase change films. Journal of Applied Physics, 128(15). https://doi.org/10.1063/5.0023476 Publication ID: 71258
  • Vikrant, K.S.N., Grosso, R.L., Feng, L., Muccillo, E.N.S., Muche, D.N.F., Jawaharram, G.S., Barr, C.M., Monterrosa, A.M., Castro, R.H.R., García, R.E., Hattar, K., Dillon, S.J., & Dillon, S.J. (2020). Ultrahigh temperature in situ transmission electron microscopy based bicrystal coble creep in zirconia I: Nanowire growth and interfacial diffusivity. Acta Materialia, 199, pp. 530-541. https://doi.org/10.1016/j.actamat.2020.08.069 Publication ID: 74722
  • Levy, J., Adams, D., Nichols, D., Harrison, R., Jordan, M., Claus, L., Dorsey, D., & Dorsey, D. (2020). Multi-Layered Solid-State Neutron Sensor [Conference Proceeding]. https://www.osti.gov/biblio/1824932 Publication ID: 71142
  • Levy, J., Adams, D., Nichols, D., Harrison, R., Jordan, M., Claus, L., Dorsey, D., & Dorsey, D. (2020). Multi-Layered Solid-State Neutron Sensor [Conference Presenation]. https://doi.org/10.2172/1830935 Publication ID: 71397
  • Xiao, T., Bennett, C., Mancoff, F., Manuel, J., Hughart, D.R., Jacobs-Gedrim, R., Bielejec, E.S., Vizkelethy, G., Sun, J., Aggarwal, S., Arghavani, R., Marinella, M., & Marinella, M. (2020). Heavy-ion-induced displacement damage effects in magnetic tunnel junctions with perpendicular anisotropy [Conference Presenation]. https://doi.org/10.2172/1831024 Publication ID: 71473
  • Dennett, C., Dacus, B., Clark, T., Barr, C., Zhang, Y., Hattar, K., Short, M., & Short, M. (2020). In situ observation of short- and longtimescale material property evolution under extreme conditions [Conference Presenation]. https://doi.org/10.2172/1829241 Publication ID: 71510
  • Kiani, M.T., Hattar, K., Gu, X.W., & Gu, X.W. (2020). In Situ TEM Study of Radiation Resistance of Metallic Glass-Metal Core-Shell Nanocubes. ACS Applied Materials and Interfaces, 12(36), pp. 40910-40916. https://doi.org/10.1021/acsami.0c10664 Publication ID: 74611
  • Xiao, T., Bennett, C., Hu, X., Feinberg, B., Jacobs-Gedrim, R., Agarwal, S., Brunhaver, J., Friedman, J., Incorvia, J., Marinella, M., & Marinella, M. (2020). Energy-efficient stateful logic with magnetic domain walls [Presentation]. https://doi.org/10.1117/12.2568658 Publication ID: 74758
  • Parrish, R., Hattar, K., & Hattar, K. (2020). In-situ Characterization of Nanomaterials in Extreme Environments with the I3TEM [Conference Poster]. https://www.osti.gov/biblio/1822624 Publication ID: 70961
  • Kumari, P., Huang, S., Wasiolek, M., Hattar, K., Ray, B., & Ray, B. (2020). Layer-Dependent Bit Error Variation in 3-D NAND Flash under Ionizing Radiation. IEEE Transactions on Nuclear Science, 67(9), pp. 2021-2027. https://doi.org/10.1109/tns.2020.3014261 Publication ID: 74605
  • Jarzembski, A., Goldflam, M., Siddiqui, A., Ruiz, I., Beechem, T., & Beechem, T. (2020). Enhancing graphene plasmonic device performance via its dielectric environment. Physical Review Applied, 14(3). https://doi.org/10.1103/physrevapplied.14.034044 Publication ID: 71289
  • Hattar, K., Briggs, S., Barr, C., Heckman, N., Clark, T., Boyce, B., & Boyce, B. (2020). Exploring the Extremes via In-Situ Scanning Electron Microscopy [Conference Poster]. https://doi.org/10.26226/morressier.5f5f8e69aa777f8ba5bd60d0 Publication ID: 71009
  • Goldflam, M., Anderson, E., Fortune, T., Klem, J.F., Hawkins, S.D., Davids, P., Campione, S., Pung, A., Webster, P., Weiner, P., Finnegan, P., Wendt, J., Wood, M., Haines, C., Coon, W., Olesberg, J., Shaner, E., Kadlec, C., Beechem, T., … Peters, D. (2020). Nanoantenna-Enhanced Resonant Detectors for Improved Infrared Detector Performance [Conference Poster]. https://www.osti.gov/biblio/1812999 Publication ID: 74459
  • Hattar, K. (2020). Exploring coupled extreme environments via in-situ transmission electron microcopy [Conference Poster]. https://www.osti.gov/biblio/1810695 Publication ID: 74206
  • Rodriguez, M.A., DeJong, S., Adams, D., Scott, E.A., Griego, J.J.M., Valdez, N.R., & Valdez, N.R. (2020). Employing Principal Component Analysis for XRD Signal Extraction of Germanium Antimony Telluride Thin Films During Crystallization [Conference Poster]. https://www.osti.gov/biblio/1811815 Publication ID: 74291
  • Specht, P., Adams, D., Mitchell, J., Brown, J.L., Branch, B., Silling, S., Wise, J.L., Brown, D., Palmer, T., & Palmer, T. (2020). Response of Wrought and Additively Manufactured 304L Stainless Steel at Mbar Stresses [Presentation]. https://www.osti.gov/biblio/1812161 Publication ID: 74340
  • Hopkins, E., Hattar, K., Barr, C., Clark, T., Parrish, R., & Parrish, R. (2020). In-Situ Annealing of Pt-Au Alloys: Grain Growth with Temperature and Composition Dependence [Presentation]. https://www.osti.gov/biblio/1877563 Publication ID: 74249
  • Saltonstall, C., McClure, Z.D., Abere, M., Guzman, D., Reeve, S.T., Strachan, A., Kotula, P., Adams, D., Beechem, T., & Beechem, T. (2020). Complexion dictated thermal resistance with interface density in reactive metal multilayers. Physical Review B, 101(24). https://doi.org/10.1103/physrevb.101.245422 Publication ID: 73846
  • Ali, A., Kim, H.-G., Hattar, K., Briggs, S., Jun Park, D., Hwan Park, J., Lee, Y., & Lee, Y. (2020). Ion irradiation effects on Cr-coated zircaloy-4 surface wettability and pool boiling critical heat flux. Nuclear Engineering and Design, 362. https://doi.org/10.1016/j.nucengdes.2020.110581 Publication ID: 74604
  • Hattar, K. (2020). In situ TEM Failures in Fatigue and Other Extreme Environments [Conference Poster]. https://www.osti.gov/biblio/1805330 Publication ID: 73949
  • Goldflam, M., Ruiz, I., Howell, S.W., Tauke-Pedretti, A., Anderson, E., Wendt, J.R., Finnegan, P., Hawkins, S.D., Coon, W., Fortune, T., Shaner, E., Kadlec, C., Olesberg, J., Klem, J.F., Webster, P., Sinclair, M.B., Kim, J., Peters, D., Beechem, T., & Beechem, T. (2020). Monolithically fabricated tunable long-wave infrared detectors based on dynamic graphene metasurfaces. Applied Physics Letters, 116(19). https://doi.org/10.1063/5.0007780 Publication ID: 73610
  • Heckman, N., Padilla, H., Michael, J., Barr, C., Clark, B.G., Hattar, K., Boyce, B., & Boyce, B. (2020). Rethinking scaling laws in the high-cycle fatigue response of nanostructured and coarse-grained metals. International Journal of Fatigue, 134. https://doi.org/10.1016/j.ijfatigue.2020.105472 Publication ID: 71486
  • Taylor, C.A., Sugar, J., Robinson, D., Bartelt, N.C., Sills, R.B., Hattar, K., & Hattar, K. (2020). Using In Situ TEM Helium Implantation and Annealing to Study Cavity Nucleation and Growth. JOM, 72(5), pp. 2032-2041. https://doi.org/10.1007/s11837-020-04117-4 Publication ID: 74313
  • Marinella, M., Agarwal, S., Bennett, C., Jacobs-Gedrim, R., Hughart, D.R., Talin, A., Incorvia, J., & Incorvia, J. (2020). Neuromorphic Computing with Analog Nonvolatile Memory [Conference Poster]. https://www.osti.gov/biblio/1783628 Publication ID: 73366
  • Marinella, M., Agarwal, S., Bennett, C., Xiao, T., Jacobs-Gedrim, R., Hughart, D.R., Fuller, E., Talin, A., Barnaby, H., Incorvia, J., & Incorvia, J. (2020). Efficient Neural Network Processing with Analog In-Memory Computing [Conference Poster]. https://www.osti.gov/biblio/1780947 Publication ID: 73371
  • Marinella, M., Agarwal, S., Bennett, C., Jacobs-Gedrim, R., Hughart, D.R., Fuller, E., Hsia, A., Talin, A., & Talin, A. (2020). Energy Efficient Neural Network Training with Analog Synapses: Challenges and Opportunities [Conference Poster]. https://www.osti.gov/biblio/1780964 Publication ID: 73368
  • Schuler, J.D., Copeland, R., Hattar, K., Rupert, T.J., Briggs, S.A., & Briggs, S.A. (2020). Solid-state dewetting instability in thermally-stable nanocrystalline binary alloys. Materialia, 9. https://doi.org/10.1016/j.mtla.2020.100618 Publication ID: 74531
  • Schuler, J.D., Grigorian, C.M., Barr, C.M., Boyce, B., Hattar, K., Rupert, T.J., & Rupert, T.J. (2020). Amorphous intergranular films mitigate radiation damage in nanocrystalline Cu-Zr. Acta Materialia, 186, pp. 341-354. https://doi.org/10.1016/j.actamat.2019.12.048 Publication ID: 74538
  • Battaile, C., Adams, D., Moore, N.W., Prime, M., Wise, J.L., & Wise, J.L. (2020). Simulating the Effects of Microscale Heterogeneities on the Mechanical Response of Tantalum during High-Rate Loading [Conference Poster]. https://www.osti.gov/biblio/1770548 Publication ID: 72987
  • Ruiz, I., Beechem, T., Vizkelethy, G., Howell, S., Goodman, K., McDonald, A., Thelen, P., Goldflam, M., & Goldflam, M. (2020). Depleted Graphene-Insulator-Silicon Junctions for High Energy Detection of Ions and Gamma Rays [Conference Poster]. https://www.osti.gov/biblio/1771267 Publication ID: 73058
  • Parrish, R., Hattar, K., Barr, C., Tucker, G., Gupta, A., & Gupta, A. (2020). In-Situ TEM Characterization and Molecular Dynamics Simulation of the Microstructural Response of Nanocrystalline Gold to Rapid Thermal Annealing [Conference Poster]. https://www.osti.gov/biblio/1773663 Publication ID: 73183
  • Parrish, R., Hattar, K., Barr, C., Tucker, G., Gupta, A., & Gupta, A. (2020). TEM Comparison of Neutron and Ion Beam Damage in Nanocrystalline Gold [Conference Poster]. https://www.osti.gov/biblio/1773662 Publication ID: 73182
  • Adams, D., Abere, M., Sobczak, C., Kotula, P., Beechem, T., Saltonstall, C., McClure, Z., Strachan, A., & Strachan, A. (2020). Revealing the structure and composition of small interfacial volumes composed within reactive multilayer thin films [Conference Poster]. https://www.osti.gov/biblio/1773596 Publication ID: 73177
  • Hattar, K. (2020). Exploring the Extremes of Mechanical Behavior through In-situ Electron Microscopy [Conference Poster]. https://www.osti.gov/biblio/1769560 Publication ID: 72921
  • Murphy, R., Lawrence, S., Moody, N., Yarrington, C.D., Rockwell, G., Adams, D., & Adams, D. (2020). Basic Research of Intrinsic Tamper-Indication Markings and Patterns Defined by Pulsed Laser Irradiation: FY 14 Update [Presentation]. https://www.osti.gov/biblio/1773593 Publication ID: 73178
  • Hattar, K. (2020). Tailoring the Thermal Mechanical and Acoustic Properties through Ion Beam Modification [Conference Poster]. https://www.osti.gov/biblio/1769561 Publication ID: 72922
  • Grosso, R.L., Muccillo, E.N.S., Muche, D.N.F., Jawaharram, G.S., Barr, C., Monterrosa, A.M., Castro, R.H.R., Hattar, K., Dillon, S.J., & Dillon, S.J. (2020). In Situ Transmission Electron Microscopy for Ultrahigh Temperature Mechanical Testing of ZrO2. Nano Letters, 20(2), pp. 1041-1046. https://doi.org/10.1021/acs.nanolett.9b04205 Publication ID: 73771
  • Barr, C., Price, P., Heckman, N., Boyce, B., Hattar, K., & Hattar, K. (2020). Exploring Stability of Nanocrystalline Metals with Competing Solute Effects Under High Temperature Irradiation [Conference Poster]. https://www.osti.gov/biblio/1767381 Publication ID: 72733
  • Salvador, H., Sun, Y., Clark, T., Hattar, K., Shahrezaei, S., Mathaudhu, S., & Mathaudhu, S. (2020). Radiation tolerance of gradient grain-structured copper processed by surface mechanical attrition treatment [Conference Poster]. https://www.osti.gov/biblio/1767889 Publication ID: 72751
  • Heckman, N., Barr, C., Hattar, K., Adams, D., Furnish, T., Boyce, B., & Boyce, B. (2020). Watching high-cycle fatigue in nanocrystalline Pt and Pt-Au [Presentation]. https://www.osti.gov/biblio/1768173 Publication ID: 72804
  • Saltonstall, C., McClure, Z., Abere, M., Guzman, D., Reeve, S., Strachan, A., Kotula, P., Adams, D., Beechem, T., & Beechem, T. (2020). Non-linear Thermal Resistance Trend with Increasing Bilayer Density [Conference Poster]. https://www.osti.gov/biblio/1766932 Publication ID: 72655
  • Agarwal, S., Jacobs-Gedrim, R., Bennett, C., Xiao, T., Van Heukelom, M., Hughart, D.R., Fuller, E., Li, Y., Talin, A., Marinella, M., & Marinella, M. (2020). Designing and Modelling Analog Neural Network Training Accelerators [Presentation]. https://www.osti.gov/biblio/1764800 Publication ID: 72120
  • Hattar, K. (2020). NSUF at Sandia National Laboratories [Conference Poster]. https://www.osti.gov/biblio/1768148 Publication ID: 72780
  • Clark, T., Hattar, K., Mathaudhu, S., Briggs, S., Dowding, R., Trelewciz, J., & Trelewciz, J. (2020). Irradiation induced damage evolution in Tungsten [Conference Poster]. https://www.osti.gov/biblio/1767395 Publication ID: 72729
  • Ruiz, I., Beechem, T., Goldflam, M., Vizkelethy, G., Thelen, P., Howell, S., Goodman, K., & Goodman, K. (2020). Depleted Graphene-Insulator-Silicon Junctions for High Energy Detection of Ions and Gamma Rays [Conference Poster]. https://www.osti.gov/biblio/1761022 Publication ID: 70725
  • Dennett, C.A., Choens, R.C., Taylor, C.A., Heckman, N., Ingraham, M., Robinson, D., Boyce, B., Short, M.P., Hattar, K., & Hattar, K. (2020). Listening to Radiation Damage In Situ: Passive and Active Acoustic Techniques. JOM, 72(1), pp. 197-209. https://doi.org/10.1007/s11837-019-03898-7 Publication ID: 65957
  • Scott, E.A., Hattar, K., Braun, J., Rost, C., Gaskins, J., Bai, T., Wang, Y., Ganski, C., Fazli, M., Goorsky, M., Hopkins, P., & Hopkins, P. (2019). Thermal Property Manipulation Of Crytalline Materials through Ion Implantation [Conference Poster]. https://www.osti.gov/biblio/1643456 Publication ID: 66750
  • Hayden, S.C., Chisholm, C., Grudt, R.O., Aguiar, J.A., Mook, W.M., Kotula, P., Pilyugina, T.S., Bufford, D., Hattar, K., Kucharski, T.J., Taie, I.M., Ostraat, M.L., Jungjohann, K.L., & Jungjohann, K.L. (2019). Localized corrosion of low-carbon steel at the nanoscale. npj Materials Degradation, 3(1). https://doi.org/10.1038/s41529-019-0078-1 Publication ID: 67053
  • Kittell, D.E., Abere, M., Adams, D., & Adams, D. (2019). 3D Simulations of Reaction Front Dynamics in a 1:1 Co/Al Reactive Multilayer System [Conference Poster]. https://www.osti.gov/biblio/1643516 Publication ID: 66640
  • Saltonstall, C., Beechem, T., Allerman, A., & Allerman, A. (2019). Thermal Conductivity of AlGaN: Assessing Alloying and Layer Thickness [Conference Poster]. https://www.osti.gov/biblio/1643309 Publication ID: 66366
  • Saltonstall, C., Beechem, T., & Beechem, T. (2019). NiOx Thermal Boundary Conductance [Presentation]. https://www.osti.gov/biblio/1646296 Publication ID: 66365
  • Ohta, T., Berg, M., Beechem, T., Chan, C., Keyshar, K., Zhang, X., Vajtai, R., Gupta, G., Ajayan, P., Mohite, A., & Mohite, A. (2019). Experimental Determination of the Ionization Energies of MoSe2 WS2 and MoS2 Using Photoemission Electron Microscopy [Conference Poster]. https://www.osti.gov/biblio/1643573 Publication ID: 66548
  • Abere, M., Sobczak, C., Adams, D., & Adams, D. (2019). Prediction of spin band widths in Co/Al nanolaminates [Conference Poster]. https://www.osti.gov/biblio/1643625 Publication ID: 66448
  • Schmucker, S., Anderson, E., Lucero, J., Bussmann, E., Lu, P., Katzenmeyer, A., Luk, T.S., Beechem, T., Tracy, L., Lu, T., Grine, A., Ward, D., Campbell, D., Gamache, P., Gunter, M., Misra, S., & Misra, S. (2019). Characterization and Impact of Atomic Imperfections in Si:P Materials and Devices [Conference Poster]. https://www.osti.gov/biblio/1643545 Publication ID: 66587
  • Adams, D., Abere, M., Sobczak, C., Rodriguez, M.A., & Rodriguez, M.A. (2019). Stabilizing effects of oxidation on propagating formation reactions occurring in nanometer-scale metal multilayers. Thin Solid Films, 688. https://doi.org/10.1016/j.tsf.2019.05.068 Publication ID: 69319
  • Cowen, B., El-Genk, M.S., Hattar, K., Briggs, S.A., & Briggs, S.A. (2019). Investigations of irradiation effects in crystalline and amorphous SiC. Journal of Applied Physics, 126(13). https://doi.org/10.1063/1.5085216 Publication ID: 65689
  • Katzenmeyer, A., Goldflam, M., Beechem, T., Jarzembski, A., Baczewski, A., Young, S., & Young, S. (2019). APAM Photonics Silicon: optics beyond the telecom region [Presentation]. https://www.osti.gov/biblio/1700541 Publication ID: 66032
  • Goriparti, S., Wolak, M., Beechem, T., Cuillier, P., Siegal, M., Harrison, K., & Harrison, K. (2019). Pulsed Laser Deposited Nanoporous Carbon as a Lithium Ion Battery Anode [Conference Poster]. https://www.osti.gov/biblio/1642877 Publication ID: 65766
  • Specht, P., Mitchell, J., Adams, D., Brown, J.L., Silling, S., Wise, J.L., Palmer , T., & Palmer , T. (2019). Shortening the Design and Certification Cycle for Additively Manufactured Materials by Improved Mesoscale Simulations and Validation Experiments: Fiscal Year 2019 Status Report. https://doi.org/10.2172/1570554 Publication ID: 65576
  • Clark, T., Taylor, C.A., Robinson, D., Sugar, J., Hattar, K., & Hattar, K. (2019). Nanobubbles and Nanocavities in Palladium as a Function of He [Conference Poster]. https://www.osti.gov/biblio/1642743 Publication ID: 65473
  • Adams, D., Sobczak, C., Yarrington, C.D., Abere, M., Reeves, R., & Reeves, R. (2019). Exothermic Reactions in Al/Pt Multilayers of Varied Stoichiometry [Conference Poster]. https://www.osti.gov/biblio/1641982 Publication ID: 64868
  • Ruiz, I., Beechem, T., Goldflam, M., McDonald, A., Howell, S., Goodman, K., Thelen, P., & Thelen, P. (2019). High Energy Ion and Gamma Detection using the Graphene-Insulator-Semiconductor Junction [Conference Poster]. https://www.osti.gov/biblio/1642720 Publication ID: 65308
  • Hattar, K., Barr, C., Muntifering, B., Bufford, D., Taylor, C.A., Foiles, S., Abdeljawad, F., Briggs, S., & Briggs, S. (2019). Exploring the Interplay Between Grain Boundaries and Radiation Damage [Conference Poster]. https://www.osti.gov/biblio/1642611 Publication ID: 65376
  • Ruiz, I., Goldflam, M., Beechem, T., Howell, S., & Howell, S. (2019). The Deeply Depleted Graphene-Insulator-Semiconductor Junction: A Versatile Approach Towards Light Sensing Across the Electromagnetic Spectrum [Conference Poster]. https://doi.org/10.1117/12.2527312 Publication ID: 65310
  • Ruiz, I., Beechem, T., McDonald, A., Howell, S., Draper, B., Thelen, P., Vizkelethy, G., Goldflam, M., & Goldflam, M. (2019). Depleted Graphene-Oxide-Semiconductor Junctions for High Energy Radiation Detection [Conference Poster]. https://doi.org/10.1109/DRC46940.2019.9046424 Publication ID: 65309
  • Clark, T., Taylor, C.A., Hattar, K., Robinson, D., Sugar, J., & Sugar, J. (2019). Evolution of He nanobubbles and nanocavities in Palladium [Conference Poster]. https://www.osti.gov/biblio/1642044 Publication ID: 64967
  • Adams, D., Abere, M., Sobczak, C., Reeves, R., & Reeves, R. (2019). Propagating Exothermic Reactions in Al/Pt Multilayers of Varied Composition [Conference Poster]. https://www.osti.gov/biblio/1641981 Publication ID: 64867
  • Briggs, S., Monterrosa, A., Taylor, C.A., Greaves, G., Hinks, J., Hattar, K., & Hattar, K. (2019). In-situ observations of bubble evolution in Pd during He implantation at cryogenic temperatures in a H2 environment [Conference Poster]. https://www.osti.gov/biblio/1642614 Publication ID: 65384
  • Clark, T., Devaraj, A., Mathaudhu, S., Hattar, K., & Hattar, K. (2019). Effect of Irradiation on Microstructure and Mechanical Properties of Metal Matrix Nanocomposite [Conference Poster]. https://www.osti.gov/biblio/1642622 Publication ID: 65397
  • Taylor, C.A., Hattar, K., Wang, Y., Snow, C., & Snow, C. (2019). Crack Propagation in Helium Implanted Erbium Deuteride [Conference Poster]. https://www.osti.gov/biblio/1642603 Publication ID: 65130
  • Hattar, K., Barr, C., Heckman, N., Boyce, B., Foiles, S., Abdeljawad, F., & Abdeljawad, F. (2019). Decoupling Thermal Mechanical and Irradiation Stability Mechanisms in Nanocrystalline Pt Alloys [Conference Poster]. https://www.osti.gov/biblio/1642715 Publication ID: 65339
  • Adams, D., Abere, M., Sobczak, C., Reeves, R., & Reeves, R. (2019). Propagating Exothermic Reactions in Al/Pt Multilayers of Varied Composition [Conference Poster]. https://www.osti.gov/biblio/1641980 Publication ID: 64866
  • Adams, D., Abere, M., Sobczak, C., Kotula, P., Rodriguez, M.A., & Rodriguez, M.A. (2019). Unstable propagating reactions in sputter-deposited nanolaminates [Conference Poster]. https://www.osti.gov/biblio/1641979 Publication ID: 64865
  • Ruiz, I., Goldflam, M., Beechem, T., Sarma, R., Stephen, H., & Stephen, H. (2019). The Deeply Depleted Graphene-Insulator-Semiconductor Junction: A versatile Approach towards light sensing across the electromagnetic spectrum [Conference Poster]. https://doi.org/10.1117/12.2527312 Publication ID: 70621
  • Barr, C., Qu, D., Mook, W., Korth, B., Kropka, J., Burkhart, C., Hattar, K., & Hattar, K. (2019). Application of In-situ TEM Nanoscale Quantitative Mechanical Testing to Elastomers [Conference Poster]. https://doi.org/10.1017/S1431927619008353 Publication ID: 70381
  • Crawford, M., Rice, A., Allerman, A., Spataru, D., Beechem, T., Ohta, T., & Ohta, T. (2019). Hexagonal BN: Recent Advances and Potential for UV Optoelectronics (invited) [Conference Poster]. https://www.osti.gov/biblio/1641674 Publication ID: 70528
  • Taylor, C.A., Hattar, K., Kotula, P., Zschiesche, D., Goeke, R., Arey, B., Matthews, B., & Matthews, B. (2019). Investigation of Helium Behavior in Multilayered Hydride Structures Through In-situ TEM Ion Implantation [Conference Poster]. https://doi.org/10.1017/S1431927619008584 Publication ID: 64655
  • Reed, B., Monterrosa, A., Moghadam, A., Bloom, R., Park, S., Briggs, S., Price, P., Tutt, S., Barr, C., McKeown, J., Masiel, D., Hattar, K., & Hattar, K. (2019). Initiation of Grain Growth Observed Using Ultrafast TEM Deflectors [Conference Poster]. https://www.osti.gov/biblio/1641507 Publication ID: 70289
  • Briggs, S., Monterrossa, A., Heckman, N., Barr, C., Treadwell, L., Boyce, B., Hattar, K., & Hattar, K. (2019). Development of the In-Situ Ion Irradiation SEM at Sandia National Laboratories [Conference Poster]. https://doi.org/10.1017/S1431927619008717 Publication ID: 70363
  • Goldflam, M., Beechem, T., Vizkelethy, G., Thelen, P., Shank, J., Sarma, R., Davids, P., Harrison, R., Smith, S.W., Friedrich, L., Draper, B., Howell, S., Ruiz, I., & Ruiz, I. (2019). Graphene-Based PhotoFET for Optical and Radiation Detection [Conference Poster]. https://www.osti.gov/biblio/1641687 Publication ID: 70547
  • Lim, H., Carroll, J.D., Medlin, D., Hattar, K., & Hattar, K. (2019). Quantitative multiscale microscopy of defects and deformation for application to materials modeling. https://www.osti.gov/biblio/1670868 Publication ID: 70585
  • Hattar, K., Barr, C., Monterrosa, A., Jawaharram, G., Briggs, S., Heckman, N., Boyce, B., J., D., & J., D. (2019). Pushing the Frontiers of Electron Microscopy Stressors [Conference Poster]. https://www.osti.gov/biblio/1641805 Publication ID: 64638
  • Marinella, M., Agarwal, S., Jacobs-Gedrim, R., Hughart, D.R., Richter, I., Hsia, A., Fuller, E., Talin, A., Goeke, R., Plimpton, S.J., James, C., & James, C. (2019). Ultra-Efficient Neuromorphic Algorithm Acceleration Enabled by Resistive Memory (ReRAM) Crossbars [Conference Poster]. https://www.osti.gov/biblio/1641227 Publication ID: 69896
  • Marinella, M., Bennett, C., Jacobs-Gedrim, R., Hsia, A., Hughart, D.R., James, C., Vizkelethy, G., Bielejec, E.S., Agarwal, S., Fuller, E., Talin, A., Taggart, J., Barnaby, H., & Barnaby, H. (2019). Energy Efficient Neuromorphic Algorithm Training with Analog Memory Arrays [Conference Poster]. https://www.osti.gov/biblio/1641235 Publication ID: 69904
  • Rice, W., Levy, J., Adams, D., Nichols, D., Harrison, R., Jordan, M., Jones, A., Claus, L., Jensen, S., Dorsey, D., Koudelka, R., & Koudelka, R. (2019). Multi-Layered Solid State Neutron Sensor [Conference Poster]. https://www.osti.gov/biblio/1641435 Publication ID: 70185
  • Marinella, M., Jacobs-Gedrim, R., Hsia, A., Hughart, D.R., James, C., Agarwal, S., Bortz-Johnson, A., Fuller, E., Talin, A., Barnaby, H., & Barnaby, H. (2019). Energy Efficient Neuromorphic Algorithm Training with Analog Memory Arrays [Conference Poster]. https://www.osti.gov/biblio/1641233 Publication ID: 69902
  • Marinella, M., Agarwal, S., Jacobs-Gedrim, R., Hughart, D.R., Richter, I., Hsia, A., Fuller, E., Talin, A., Goeke, R., Plimpton, S.J., James, C., & James, C. (2019). Ultra-Efficient Neuromorphic Algorithm Acceleration Enabled by Resistive Memory (ReRAM) Crossbars [Conference Poster]. https://www.osti.gov/biblio/1641228 Publication ID: 69897
  • Marinella, M., Agarwal, S., Jacobs-Gedrim, R., Niroula, J., Goeke, R., Hsia, A., Fuller, E., Talin, A., James, C., & James, C. (2019). Toward an Analog Neural Accelerator with 10 fJ per Operation using Resistive Synaptic Devices [Conference Poster]. https://www.osti.gov/biblio/1641231 Publication ID: 69900
  • Clark, T., Hattar, K., Mathaudhu, S., & Mathaudhu, S. (2019). Helium Radiation Damage in Hot Deformed Tungsten [Conference Poster]. https://www.osti.gov/biblio/1641063 Publication ID: 69583
  • Marinella, M., Agarwal, S., Jacobs-Gedrim, R., Hsia, A., Hughart, D.R., Richter, I., Fuller, E., Plimpton, S.J., Talin, A., James, C., & James, C. (2019). Ultra-Efficient Neural Algorithm Accelerator Using Processing With Memory [Conference Poster]. https://www.osti.gov/biblio/1641230 Publication ID: 69899
  • Marinella, M., Agarwal, S., Jacobs-Gedrim, R., Hsia, A., Hughart, D.R., Richter, I., Fuller, E., Plimpton, S.J., Talin, A., James, C., & James, C. (2019). Ultra-Efficient Neural Algorithm Accelerator Using Processing With Memory (Poster) [Conference Poster]. https://www.osti.gov/biblio/1641229 Publication ID: 69898
  • Marinella, M., Agarwal, S., Jacobs-Gedrim, R., Hughart, D.R., Bennett, C., Hsia, A., Fuller, E., Talin, A., Barnaby, H., & Barnaby, H. (2019). Efficient Neuromorphic Computing in SWaP-Constrained Environments [Conference Poster]. https://www.osti.gov/biblio/1641234 Publication ID: 69903
  • McClure, Z., Saltonstall, C., Abere, M., Guzman, D., Strachan, A., Reeve, S., Beechem, T., & Beechem, T. (2019). Non-linear thermal resistance trend with increasing bilayer density in reactive metal multilayers [Presentation]. https://www.osti.gov/biblio/1807087 Publication ID: 69822
  • Agarwal, S., Jacobs-Gedrim, R., Bennett, C., Hsia, A., Adee, S., Hughart, D.R., Fuller, E., Li, Y., Talin, A., Marinella, M., & Marinella, M. (2019). Designing and Modelling Analog Neural Network Training Accelerators [Conference Poster]. https://www.osti.gov/biblio/1640878 Publication ID: 69291
  • Heckman, N., Foiles, S., O’Brien, C., Chandross, M., Barr, C., Argibay, N., Hattar, K., Lu, P., Adams, D., Boyce, B., & Boyce, B. (2019). Deformation Mechanisms in Nanocrystalline Pt-Au: Competition of Grain Boundary Embrittlement and Compositional Crack Arrest [Conference Poster]. https://www.osti.gov/biblio/1640661 Publication ID: 69022
  • Bennett, C., Garland, D., Jacobs-Gedrim, R., Agarwal, S., Marinella, M., & Marinella, M. (2019). Wafer-Scale TaOx Device Variability and Implications for Neuromorphic Computing Applications [Conference Poster]. IEEE International Reliability Physics Symposium Proceedings. https://doi.org/10.1109/IRPS.2019.8720596 Publication ID: 66566
  • Specht, P., Silling, S., Mitchell, J., Battaile, C., Brown, J.L., Wise, J.L., Adams, D., Brown, D., Palmer, T., Michael, J., Saavedra, M., & Saavedra, M. (2019). Shortening the Design and Certification Cycle for Additively Manufactured Materials by Improved Mesoscale Simulations and Validation Experiments [Presentation]. https://www.osti.gov/biblio/1645212 Publication ID: 68419
  • Dennett, C., Hattar, K., & Hattar, K. (2019). In situ ion irradiation transient grating spectroscopy (I3TGS) [Presentation]. https://www.osti.gov/biblio/1648784 Publication ID: 68400
  • Ruiz, I., Howell, S., Goldflam, M., Beechem, T., Wendt, J., & Wendt, J. (2019). Graphene Integration: Film Synthesis and Device Fabrication [Conference Poster]. https://www.osti.gov/biblio/1639973 Publication ID: 68451
  • Friedrich, L., Ruiz, I., Howell, S., Shank, J., Sarma, R., Beechem, T., Draper, B., Goldflam, M., & Goldflam, M. (2019). Graphene-Oxide-Semiconductor Junctions for Photodetection [Conference Poster]. https://www.osti.gov/biblio/1640220 Publication ID: 68851
  • Schuler, J.D., Barr, C.M., Heckman, N.M., Copeland, R., Boyce, B., Hattar, K., Rupert, T.J., & Rupert, T.J. (2019). In Situ High-Cycle Fatigue Reveals Importance of Grain Boundary Structure in Nanocrystalline Cu-Zr. JOM, 71(4), pp. 1221-1232. https://doi.org/10.1007/s11837-019-03361-7 Publication ID: 74545
  • Hattar, K., Clem, P., & Clem, P. (2019). Sandia National Laboratories Informaiton Session [Presentation]. https://www.osti.gov/biblio/1644866 Publication ID: 67986
  • Curry, J., Babuska, T., Furnish, T., Lu, P., Adams, D., Kustas, A., Nation, B., Dugger, M., Chandross, M., Clark, B.G., Boyce, B., Schuh, C., Argibay, N., & Argibay, N. (2019). Achieving Ultra-low Wear with Stable Nanocrystalline Alloys [Conference Poster]. https://www.osti.gov/biblio/1639707 Publication ID: 68156
  • Ohta, T., Berg, M., Beechem, T., Chan, C., Keyshar, K., Bilgin, I., Liu, F., Yamaguchi, H., Zhang, X., Vajtai, R., Gupta, G., Kar, S., Ajayan, P., Mohite, A., & Mohite, A. (2019). Electronic band alignment of few-layer transition metal dichalcogenides on SiO2 [Conference Poster]. https://www.osti.gov/biblio/1639692 Publication ID: 67949
  • Abere, M., Egan, G., Adams, D., & Adams, D. (2019). Analytical modelling of propagation velocity in electron transparent nanolaminates [Conference Poster]. https://www.osti.gov/biblio/1639853 Publication ID: 68224
  • Nathan, N., Getto, E., Tobie, B., Briggs, S., Hattar, K., Baker, B., Knipling, K., & Knipling, K. (2019). Effect of Friction Stir Welding on Microstructure Evolutionof Self-Ion Irradiated MA956 [Conference Poster]. https://www.osti.gov/biblio/1639691 Publication ID: 67947
  • Argibay, N., Babuska, T., Curry, J., Dugger, M., Lu, P., Adams, D., Nation, B., Doyle, B.L., Pham, M., Pimentel, A., Mowry, C., Hinkle, A.R., Chandross, M., & Chandross, M. (2019). In-Situ Tribochemical Formation of Self-Lubricating DLC Films [Conference Poster]. https://www.osti.gov/biblio/1639708 Publication ID: 68157
  • Hattar, K. (2019). Exploring Extreme Environments with Adequate Temporal Resolution [Conference Poster]. https://www.osti.gov/biblio/1639877 Publication ID: 68291
  • Agarwal, S., Jacobs-Gedrim, R., Bennett, C., Hsia, A., Adee, S., Hughart, D.R., Fuller, E., Li, Y., Talin, A., Marinella, M., & Marinella, M. (2019). Designing and modeling analog neural network training accelerators [Conference Poster]. 2019 International Symposium on VLSI Technology, Systems and Application, VLSI-TSA 2019. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85072102970&origin=inward Publication ID: 69290
  • Bennett, C., Garland, D., Jacobs-Gedrim, R., Agarwal, S., Marinella, M., & Marinella, M. (2019). Wafer-scale TaOx device variability and implications for neuromorphic computing applications [Conference Poster]. https://doi.org/10.1109/IRPS.2019.8720596 Publication ID: 67849
  • Shuler, J., Barr, C., Heckman, N., Copeland, R., Boyce, B., Hattar, K., Rupert, T., & Rupert, T. (2019). Irradiation and Fatigue of Nanocrystalline Cu-Zr with Amorphous Intergranular Films [Conference Poster]. https://www.osti.gov/biblio/1639305 Publication ID: 67354
  • Hattar, K. (2019). Sandia Capabilities for Nuclear Reactor Environments Testing [Conference Poster]. https://www.osti.gov/biblio/1639452 Publication ID: 67554
  • Hattar, K. (2019). The In situ Irradiaiton TEM (I3TEM) [Presentation]. https://www.osti.gov/biblio/1644609 Publication ID: 67707
  • Hattar, K. (2019). The Response of Metals to Extreme Enviroments [Presentation]. https://www.osti.gov/biblio/1644554 Publication ID: 67586
  • Barr, C., Hattar, K., & Hattar, K. (2019). Quantitative In-situ TEM Nanomechanical Testing of Model and Nuclear Relevant Engineering Alloys [Conference Poster]. https://www.osti.gov/biblio/1639578 Publication ID: 67775
  • Getto, E., Tobie, B., Briggs, S., Hattar, K., Baker, B., Knipling, K., Wharry, J., & Wharry, J. (2019). Effect of Friction Stir Welding on Microstructure Evolution of Self-Ion Irradiated MA956 [Conference Poster]. https://www.osti.gov/biblio/1639347 Publication ID: 67387
  • Barr, C., Hattar, K., & Hattar, K. (2019). Exploring Grain Boundary-Defect Interactions in Pt and Pt-Au using In-situ TEM High Cycle Fatigue [Conference Poster]. https://www.osti.gov/biblio/1639376 Publication ID: 67435
  • Taylor, C.A., Hattar, K., Muntifering, B., Briggs, S., Sugar, J., Gibson, K., Robinson, D., York, W., Catarineu, N., & Catarineu, N. (2019). Advanced In-situ Electron Microscopy Characterization of H and He Evolution in Materials [Conference Poster]. https://www.osti.gov/biblio/1639299 Publication ID: 67342
  • Monterrosa, A.M., Aguiar, J., Reed, B., Masiel, D., Kwon, S., Gong, M., Tasdizen, T., Benjamin, C., Jungjohann, K.L., Hattar, K., Luther, E., Hartman, H., & Hartman, H. (2019). In-situ Ion Irradiation and Recrystallization in Highly Structured Materials [Conference Poster]. https://www.osti.gov/biblio/1602124 Publication ID: 67110
  • Monterrosa, A.M., Reed, B., Moghadam, A., Bloom, R., Park, S., Briggs, S., Price, P., Barr, C., McKeown, J., Masiel, D., Hattar, K., & Hattar, K. (2019). Initiation of Grain Growth Observed using Electrostatic-Subframing [Conference Poster]. https://www.osti.gov/biblio/1601098 Publication ID: 66986
  • Crawford, M., Rice, A., Allerman, A., Beechem, T., Ohta, T., Medlin, D., Spataru, D., Figiel, J., Sharps, P., & Sharps, P. (2019). Growth of hBN by High-Temperature Metal-Organic Chemical Vapor Deposition [Conference Poster]. https://www.osti.gov/biblio/1599274 Publication ID: 65961
  • Specht, P., Adams, D., Silling, S., Mitchell, J., Battaile, C., Brown, J.L., Wise, J.L., Brown, D., Palmer, T., Michael, J., Saavedra, M., & Saavedra, M. (2019). Shortening the Design and Certification Cycle for Additively Manufactured Materials by Improved Mesoscale Simulations and Validation Experiments [Conference Poster]. https://www.osti.gov/biblio/1598928 Publication ID: 65567
  • Dennett, C.A., Buller, D.L., Hattar, K., Short, M.P., & Short, M.P. (2019). Real-time thermomechanical property monitoring during ion beam irradiation using in situ transient grating spectroscopy. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 440, pp. 126-138. https://doi.org/10.1016/j.nimb.2018.10.025 Publication ID: 59779
  • Monterrosa, A.M., Briggs, S., Heckman, N., Boyce, B., Treadwell, L., Hattar, K., & Hattar, K. (2019). Development of the In-Situ Ion Irradiation SEM at Sandia National Laboratories [Conference Poster]. https://www.osti.gov/biblio/1639218 Publication ID: 66953
  • Agarwal, S., Jacobs-Gedrim, R., Bennett, C., Hsia, A., Van Heukelom, M., Hughart, D.R., Fuller, E., Li, Y., Talin, A., Marinella, M., & Marinella, M. (2019). Designing and Modeling Analog Neural Network Training Accelerators [Conference Poster]. https://doi.org/10.1109/VLSI-TSA.2019.8804680 Publication ID: 67279
  • Saltonstall, C., Beechem, T., Amatya, J., Floro, J., Norris, P.M., Hopkins, P.E., & Hopkins, P.E. (2019). Uncertainty in linewidth quantification of overlapping Raman bands. Review of Scientific Instruments, 90(1). https://doi.org/10.1063/1.5064804 Publication ID: 66367
  • Taggart, J.L., Jacobs-Gedrim, R., McLain, M.L., Barnaby, H.J., Bielejec, E.S., Hardy, W., Marinella, M.J., Kozicki, M.N., Holbert, K., & Holbert, K. (2019). Failure Thresholds in CBRAM Due to Total Ionizing Dose and Displacement Damage Effects [Conference Poster]. IEEE Transactions on Nuclear Science. https://doi.org/10.1109/TNS.2018.2882529 Publication ID: 63090
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June 22, 2023