Francois Léonard


Léonard, F. (2008). The Physics of Carbon Nanotube Devices. William Andrew: New York.

Articles Published in Refereed Journals


Léonard, F, EJ Fuller, C Teeter, CM Vineyard. High accuracy single-layer free-space diffractive neuromorphic classifiers for spatially incoherent light. (2022). Optics Express 8, 12510-12520.


Léonard, F, AS Backer, EJ Fuller, C Teeter, CM Vineyard. Co-Design of Free-Space Metasurface Optical Neuromorphic Classifiers for High Performance. (2021). ACS Photonics 8, 7, 2103-2111.

Sapkota, KR, F Léonard, AA Talin, BP Gunning, BA Kazanowska, Kevin S. Jones, George T. Wang. Ultralow Voltage GaN Vacuum Nanodiodes in Air. (2021). Nano Letters 21 (5), 1928-1934.

Celio, KC, AM Armstrong, AA Talin, AA Allerman, MH Crawford, GW Pickrell, F Léonard. Carrier Diffusion Lengths in Continuously Grown and Etched-and-Regrown GaN pin Diodes. (2021). Electron Device Letters 42, 7, 1041-1044.

Spataru, CD, F Léonard. Nanoscale Functionalized Superconducting Transport Channels as Photon Detectors. Physical Review B 103, 13, 134512.


Bergemann, K, F Léonard. Giga-Gain at Room Temperature in Functionalized Carbon Nanotube Phototransistors Based on a Nonequilibrium Mechanism. (2020). ACS Nano 14, 8, 10421-10427.

Llinas, JP, MA Hekmaty, AA Talin, F Léonard. Origami Terahertz Detectors Realized by Inkjet Printing of Carbon Nanotube Inks. (2020). ACS Applied Nano Materials, 3, 3, 2920-2927.

Young, SM, M Sarovar, F Léonard. Design of High-Performance Photon-Number-Resolving Photodetectors Based on Coherently Interacting Nanoscale Elements. (2020). ACS Photonics, 7, 3, 821-830.


Armstrong, AM, BA Klein, AA Allerman. Visible- and solar-blind photodetectors using AlGaN high electron mobility transistors with a nanodot-based floating gate. (2019). Photonics Research, 7, 6, B24-B31.

Spataru, CD, F Léonard. (2019). Quantum dynamics of single-photon detection using functionalized quantum transport electronic channels. Physical Review Research, 1, 1, 013018.

M. Monavarian, M, G Pickrell, AA Aragon, I Stricklin, MH Crawford, AA Allerman, KC Celio, F Léonard, AA Talin, AM Armstrong, D Feezell. (2019). High-Voltage Regrown Nonpolar m-Plane Vetical p-n Diodes: A Step Toward Future Selective-Area-Doped Power Switches. IEEE Electron Device Letters, 40, 3, 387-390.

Léonard, F, ME Foster, CD Spataru. (2019). Prospects for Bioinspired Single-Photon Detection Using Nanotube-Chromophore Hybrids. Scientific Reports, 9, 3268.


Young, S, M Sarovar, F Léonard. (2018). General modeling framework for quantum photodetectors, Physical Review A, 98, 063835.

Bergemann, K, F Léonard. (2018). Room temperature phototransistor with negative responsivity exceeding 108 A/W using fullerene-sensitized aligned carbon nanotubes. Small, 14, 1802806.

Thürmer, K, C Schneider, V Stavila, RW Friddle, F Léonard, RA Fischer, MD Allendorf, AA Talin. (2018). Surface Morphology and Electrical Properties of Cu3BTC2 Thin Films Before and After Reaction with TCNQ. ACS Appl. Mater. Interfaces, DOI: 10.1021/acsami.8b15158.

Young, S, M Sarovar, F Léonard. (2018). Fundamental Limits to Single Photon Detection Determined by Quantum Coherence and Backaction, Physical Review A, 97, 033836.

He, YP, F Léonard, CD Spataru. (2018). Atomistic study of the electronic contact resistivity between the half-Heusler alloys (HfCoSb, HfZrCoSb, HfZrNiSn) and the metal Ag, Physical Review Materials, 2, 065401.

He Y, F Léonard, DL Medlin, N Baldasaro, DS Temple, P Barletta, CD Spataru. (2018). High Efficiency Thin Film Superlattice Thermoelectric Cooler Modules Enabled by Low Resistivity Contacts. Advanced Electronic Materials, 4, 1700381.

Talin, AA, F Léonard, (2018). Reducing Localization. Nature Materials, 17, 570.


Sun L, B Liao, D Sheberla, D Kraemer, J Zhou, EA Stach, D Zakharov, V Stavila, AA Talin, Y Ge, MD Allendorf, G Chen, F Léonard, M Dinca. (2017). A Microporous and Naturally Nanostructured Thermoelectric Metal-Organic Framework with Ultralow Thermal Conductivity. Joule, Volume 1, Issue 1, p168-177, 6 September 2017.

Léonard, F, W Yu, KC Collins, DL Medlin, JD Sugar, AA Talin, W Pan. (2017). Strong Photothermoelectric Response and Contact Reactivity of the Dirac Semimetal ZrTe5. ACS applied materials & interfaces, 9 (42), 37041-37047.

Léonard, F, CD Spataru, M Goldflam, DW Peters, TE Beechem. (2017). Dynamic Wavelenght-Tunable Photodetector Using Subwavelength Graphene Field-Effect Transistors. Scientific Reports, 7, 45873.

He, Y, CD Spataru, F Léonard, RE Jones, ME Foster, M Allendorf, AA Talin. (2017). Two-Dimensional Metal-Organic Frameworks with High Thermoelectric Efficiency Through Metal Ion Selection. Physical Chemistry Chemical Physics, 19 (29), 19461-19467.

Collins, KC, MP King, JR Dickerson, G Vizkelethy, AM Armstrong, AJ Fischer, AA Allerman, RJ Kaplar, O Aktas, IC Kizilyalli, AA Talin, F Léonard. (2017). Imaging the Impact of Proton Irradiation on Edge Terminations in Vertical GaN pin Diodes. IEEE Electron Device Letters, 38, 945.

Kaplar, RJ, F Léonard, KC Collins, AM Armstrong, JR Dickerson, MP King, AA Allerman, MH Crawford, and AA Talin. (2017). Examining Edge-Termination Performance and Failure in Vertical GaN and AlGaN Power Diodes Using Scanning-Beam Techniques. Electronic Device Failure Analysis Magazine, 3:12-20.


Fuller, EJ, F El Gabaly, F Léonard, S Agarwal, SJ Plimpton, RB Jacobs-Gedrim, CD James, MJ Marinella, AA Talin. (2017). Li-ion synaptic transistor for low power analog computing. Advanced Materials, 29, 1604310.

Dinca, M, F Léonard. Metal-organic frameworks for electronics and photonics, MRS Bulletin, 41 (11), 854, 2016.

Ullman, AM, JW Brown, ME Foster, F Léonard, K Leong, V Stavila, MD Allendorf. (2016).Transforming MOFs for Energy Applications Using the Guest@ MOF Concept. Inorganic Chemistry, 55 (15), 7233.

Léonard, F, JR Dickerson, MP King, AM Armstrong, AJ Fisher, AA Allerman, RJ Kaplar and AA Talin. (2016). In-Operando Imaging of Edge Termination Electric Fields in GaN Vertical p-n Junction Diodes. IEEE Electron Device Letters, 37, 766.


Léonard, F, E Song, Q Li, B Swartzentruber, JA Martinez, GT Wang. (2015). Simultaneous Thermoelectric and Optoelectronic Characterization of Individual Nanowires. Nano Letters, DOI: 10.1021/acs.nanolett.5b03572.

Erickson, KJ, X He, AA Talin, B Mills, RH Hauge, T Iguchi, N Fujimura, Y Kawano, J Kono, F Léonard. (2015). Figure of Merit for Carbon Nanotube Photothermoelectric Detectors. ACS Nano, DOI : 10.1021/acsnano.5b06160.

King, MP, AM Armstrong, JR Dickerson, G Vizkelethy, RM Fleming, J Campbell, WR Wampler, IC Kizilyalli, DP Bour, O Aktas, H Nie, D Disney, J Wierer Jr., AA Allerman, MW Moseley, F Léonard, AA Talin, and RJ Kaplar. (2015). Performance and Breakdown Characteristics of Irradiated Vertical Power GaN P-i-N DiodesIEEE Transactions on Nuclear Science, DOI: 10.1109/TNS.2015.2480071.

He, X, F Léonard, J Kono. (2015). Uncooled Carbon Nanotube Photodetectors. Advanced Optical Materials, DOI: 10.1002/adom.201500237.

Erickson, KJ, F Léonard, V Stavila, ME Foster, CD Spataru, RE Jones, BM Foley, PE Hopkins, MD Allendorf, AA Talin. (2015). Thin Film Thermoelectric Metal-Organic Framework with High Seebeck Coefficient and Low Thermal Conductivity. Advanced Materials, 27, 3453-3459.

Allendorf, MD, ME Foster, F Léonard, V Stavila, PL Feng, FP Doty, K Leong, EY Ma, SR Johnston, AA Talin. (2015). Guest-Induced Emergent Properties in Metal-Organic Frameworks. J. Phys. Chem. Lett. 6 (7), pp 1182-1195.

Klee, V, E Preciado, D Barroso, AE Nguyen, C Lee, KJ Erickson, M Triplett, B Davis, I-Hsi Lu, S Bobek, J McKinley, JP Martinez, J Mann, AA Talin, L Bartels, F Léonard. (2015). Superlinear Composition-Dependent Photocurrent in CVD-Grown Monolayer MoS2(1-x)Se2x Alloy Devices. Nano Letters, DOI: 10.1021/acs.nanolett.5b00190.

Triplett, M, Y Yang, F Léonard, AA Talin, M Saif Islam, D Yu. (2015). Long Minority Carrier Diffusion Lengths in Bridged Silicon Nanowires. Nano Letters, DOI: 10.1021/nl503870u.


Spataru, CD, and F Léonard. (2014). Fermi-Level Pinning, Charge Transfer, and Relaxation of Spin-Momentum Locking at Metal Contacts to Topological Insulators. Physical Review B, 90, 085115.

He, X, N Fujimura, JM Lloyd, KJ Erickson, AA Talin, Q Zhang, W Gao, Q Jiang, Y Kawano, RH Hauge, F Léonard, J Kono. (2014). Carbon nanotube terahertz detector. Nano Letters DOI: 10.1021/nl5012678.

Triplett, M, H Nishimura, M Ombaba, VJ Logeeswarren, M Yee, KG Polat, JY Oh, T Fuyuki, F Léonard and MS Islam. (2014). High Precision Transfer-Printing and Integration of Vertically Oriented Nano and Microscale Semiconductor Arrays for Flexible Device Fabrication. Nano Research, DOI: 10.1007/s12274-014-0462-7.

Talin, AA, A Centrone, AC Ford, ME Foster, V Stavila, P Haney, RA Kinney, V Szalai, F El Gabaly, HP Yoon, F Léonard, MD Allendorf. (2014). Tunable electrical conductivity in metal-organic framework thin film devices. Science, 5, DOI: 10.1126/science.1246738.

Kane, AA, AC Ford, A Nissen, KL Krafcik, F Léonard. (2014). Etching of Surfactant from Solution-Processed, Type-Separated Carbon Nanotubes and Impact on Device Behavior. ACS Nano, 8, 2477.


Zhao, Y, C Huang, M Kim, BM Wong, F Léonard, P Gopalan, and MA Eriksson. (2013). Functionalization of Single-Wall Carbon Nanotubes with Chromophores of Opposite Internal Dipole Orientation. ACS Applied Materials & Interfaces, 5, 9355-9361.

Cummings, AW, J Varennes, F Léonard. (2013). Electrical contacts to three dimensional arrays of carbon nanotubes. IEEE Transactions on Nanotechnology, 12, 1166.

Spataru, CD, and F Léonard. (2013). Many-body effects on the electronic and optical properties of strained semiconducting carbon nanotubes. Physics Review B, 88, 045404.

He, X, X Wang, S Nanot, K Cong, Q Jiang, AA Kane, JEM Goldsmith, RH Hauge, F Léonard, and J Kono. (2013). Photothermoelectric p-n Junction Photodetector with Intrinsic Broadband Polarimetry Based on Macroscopic Carbon Nanotube Films. ACS NanoDOI: 10.1021/nn402679u.

Ford, AC, M Shaughnessy, BM Wong, AA Kane, OV Kuznetsov, KL Krafcik, WE Billups, RH Hauge, F Léonard. (2013). Physical Removal of Metallic Carbon Nanotubes from Nanotube Network Devices. Nanotechnology, 24, 105202.

Nanot, S, AW Cummings, CL Pint, A Ikeuchi, T Akiho, K Sueoka, RH Hauge, F Léonard, J Kono. (2013). Broadband, Polarization-Sensitive Photodetector Based on Optically-Thick Films of Macroscopically Long, Dense, and Aligned Carbon Nanotubes. Nature Scientific Reports, 3, 1335.


Léonard, F. (2012). Thermoelectric efficiency in the space-charge-limited transport regime in semiconductors. . Physics Review B, 86, 125133.

Spataru, CD, F Léonard. (2012). Quasiparticle and exciton renormalization effects in electrostatically doped semiconducting carbon nanotubes. Chemical Physics, 413, pp. 81-88.

Cummings, AW, F Léonard. (2012). Enhanced Performance of Short-Channel Carbon Nanotube Field-Effect Transistors Due to Gate-Modulated Electrical Contacts. ACS Nano, 6, 4494.


Léonard, F, AA Talin. (2011). Electrical contacts to one- and two-dimensional nanomaterials. Nature Nanotechnology 6, 773.

Huang, C, RK Wang, BM Wong, DJ McGee, F Léonard, Y Kim, KF Johnson, MS Arnold, MA Eriksson, P Gopalan. (2011). Spectroscopic properties of Nanotube-Chromophore Hybrids. ACS Nano, 5, 7767.

Seletsky, D, MP Hasselbeck, JG Cederberg, A Katzenmeyer, ME Toimil-Molares, F. Léonard, AA Talin, M Sheik-Bahae (2011). Efficient Terahertz emission from InAs nanowires. Physical Review B, 84, 115421.

Wong, BM, F Léonard, Q Li, G Wang. (2011). Nanoscale effects on heterojunction electron gases in GaN/AlGaN core/shell nanowires. Nano Letters, 11, 3074.

Cummings, AW, F Léonard. (2011). Electrostatic effects on contacts to carbon nanotube transistors. Applied Physics Letters 98, 263503.

Mariani, G, PS Wong, AM Katzenmeyer, F Léonard, J Shapiro, and DL Huffaker. (2011). Patterned Radial GaAs Nanopillar Solar Cells. Nano Letters, 11, 2490.

Léonard, F. (2011). Reduced Joule heating in nanowires. Applied Physics Letters 98:103101.

Katzenmeyer, AM , F Léonard, AA Talin, ME Toimil-Molares, JG Cederberg, JY Huang, and J Lensch-Falk. (2011). Observation of Space-Charge-Limited Transport in InAs Nanowires. IEEE Transactions in Nanotechnology 10, 92.


Katzenmeyer, AA, F Léonard, AA Talin, P-S Wong, and DL Huffaker. (2010). Poole-Frenkel Effect and Phonon-Assisted Tunneling in GaAs Nanowires. Nano Letters 10:4935.

Spataru, CD, F Léonard. (2010). Tunable band gaps and excitons in doped semiconducting carbon nanotubes made possible by acoustic plasmons. Physical Review Letters 104:177402.

Kienle, D, M Vaidyanathan, and F Léonard. (2010). Self-consistent ac quantum transport using nonequilibrium Green functions. Physical Review B 81, 115455.

Talin, AA , F Léonard, AM Katzenmeyer, BS Swartzentruber, ST Picraux, ME Toimil-Molares, JG.Cederberg, X Wang, SD Hersee, and A Rishinaramangalum. (2010). Transport characterization in nanowires using an electrical nanoprobe. Semiconductor Science and technology 25 024015.


Léonard, F, AA Talin, A Katzenmeyer, BS Swartzentruber, ST Picraux, E Toimil-Molares, JG Cederberg, X Wang, SD Hersee, and A Rishinaramangalum. Electronic transport in nanowires: from injection-limited to space-charge-limited behavior. Proc. SPIE 7406 (2009). (Invited)

Talin, AA, F Léonard, BS Swartzentruber, X Wang, and SD Hersee. (2009). Electrical transport in GaN nanowires grown by selective epitaxy. Journal of Vacuum Science & Technology B 27, 2040.

Kienle, D, F Léonard. (2009). Terahertz response of carbon nanotube transistors. Physical Review Letters 103:026601.

Léonard, F, AA Talin, B Swartzentruber, T Picraux. (2009). Diameter-dependent electronic transport properties of Au-catalyst/Ge-nanowire Schottky diodes. Physical Review Letters 102:106805.

Zhou, X, T Zifer, BM Wong, KL Krafcik, F Léonard, AL Vance. (2009). Color Detection Using Chromophore-Nanotube Hybrid Devices. Nano Letters 9:1028.


de la Figuera, J, N Bartelt, F Léonard, R Stumpf, K McCarty. (2008). Stripe formation near the order-disorder transition: Au on W(110). Physical Review Letters 100:186102.

Faleev, SV, F Léonard. (2008). Theory of enhancement of thermoelectric properties of materials with nanoinclusions. Physical Review B 77:214304.

Rodriguez, MA, T Zifer, AL Vance, BM Wong, F Léonard. (2008). (E)-2-{Ethyl[4-(4-nitrophenyldiazenyl)phenyl]amino}ethyl anthracene-9-carboxylate. Acta Crystallographica E64:o595.

Talin, AA, F Léonard, B Swartzentruber, X Wang, S Hersee. (2008). Unusually strong space-charge-limited current in thin wires. Physical Review Letters 101:076802.


Faleev, S, F Léonard. (2007). Electron transport through Π-stacked moleculer multilayers: metal-semiconductor transition. Physical Review B 76:125108.

Hamilton, JC, F Léonard, E Johnson, U Dahmen. (2007). Pb nanoprecipitates in Al: Magic-shape effects due to elastic strain. Physical Review Letters 98:236102.

Jones, F, F Léonard, AA Talin, NS Bell. (2007). Electrical conduction and photoluminescence properties of solution-grown ZnO nanowires. Journal of Applied Physics 102:014305.

Léonard, F, A Talin. (2007). Electrical contacts to nanotubes and nanowires: Why size matters. NSTI-Nanotech Vol. 1–3.

Marquis, D, L Medlin, F Léonard. (2007). Stabilization of extended stacking faults by {111}/{112} twin junction interactions. Acta Materialia 55:5917.

Simmons, J, I In, VE Campbell, TJ Mark, F Léonard, P Gopalan, MA Eriksson. (2007). Optically modulated conduction in chromophore-functionalized single-wall carbon nanotubes. Physical Review Letters 98:086802.


Anantramand, MP, F Léonard. (2006). Physics of carbon nanotube electronic devices. Reports on Progress in Physics 69:506.

Faleev, S, M van Schilfgaarde, T Kotani, F Léonard, MP Desjarlais. (2006). Finite-temperature quasiparticle self-consistent GW approximation. Physical Review B 74:033101.

Léonard, F. (2006). Crosstalk between nanotube devices: Contact and channel effects. Nanotechnology 17:2381.

Léonard, F, AA Talin. (2006). Size-dependent effects on electrical contacts to nanotubes and nanowires. Physical Review Letters 97:026804.

Stewart, DA, F Léonard. (2006). Properties of short channel ballistic carbon nanotube transistors with ohmic contacts. Nanotechnology 17:4699.

Talin, AA, LL Hunter, B Rokad, F Léonard. (2006). Large area, dense silicon nanowire array chemical sensors. Applied Physics Letters 89:153102.

Talin, AA, FE Jones, F Léonard, PM Dentinger, WM Clift. (2006). Effect of electrode material on transport and chemical sensing characteristics of metal/carbon nanotube contacts. Journal of Electronic Materials 35:1641.


Faleev, S, F Léonard. (2005). Ab-initio TB-LMTO method for nonequilibrium electron transport in nanoscale systems. Physical Review B 71:195422.

Haataja, M, F Léonard. (2005). Alloy destabilization by dislocations. Applied Physics Letters 86:181909.

Haataja, M, J Mahon, N Provatas, F Léonard. (2005). Scaling of domain size during spinodal decomposition: Dislocation discreteness and mobility effects. Applied Physics Letters 87:251901.

Léonard, F, NC Bartelt, GL Kellogg. (2005). Effects of elastic anisotropy on the orientation and periodicity of striped stress domain patterns at solid surfaces. Physical Review B 71:045416.

Léonard, F, FE Jones, AA Talin, PM Dentinger. (2005). Robustness of nanotube electronic transport to conformational deformations. Applied Physics Letters 86:093112.

Li, W, KL Kavanagh, CM Matzke, AA Talin, F Léonard, S Faleev, JWP Hsu. (2005). Ballistic electron emission microscopy studies of Au/Molecule/n-GaAs diodes. Journal of Physical Chemistry B 109:6252.

Stewart, DA, F Léonard. (2005). Energy conversion efficiency in nanotube opto-electronics. Nano Letters 5:219.


Haataja, M, F Léonard. (2004). Influence of mobile dislocations on phase separation in binary alloys. Physical Review B 69:081202.

Marquis, EA, JC Hamilton, DL Medlin, F Léonard. (2004). Finite-size effects on the structure of grain boundaries. Physical Review Letters 93:156101.

Stewart, DA, F Léonard. (2004). Photocurrents in nanotube junctions. Physical Review Letters 93:107401.

Talin, AA, PM Dentinger, FE Jones, S Pathak, L Hunter, F Léonard, AM Morales. (2004). Assembly and electrical characterization of DNA-wrapped carbon nanotube devices. Journal of Vaccum Science and Technology B 22:3107.

van Gastel, R, NC Bartelt, PJ Feibelman, F Léonard, GL Kellogg. (2004). Relationship between domain boundary free energy and the temperature dependence of stress-domain patterns of Pb on Cu(111). Physical Review B 70:245413.


Hamilton, JC, DJ Siegel, I Daruka, F Léonard. (2003). Why do grain boundaries exhibit finite facet lengths? Physical Review Letters 90:246102.

Léonard, F, J Tersoff. (2003). Competing step instabilities at surfaces under stress. Applied Physics Letters 83:72.

Léonard, F, J Tersoff. (2003). Dielectric response of semiconducting nanotubes. Applied Physics Letters 81:4835.


Léonard, F. (2002). Quantum transport in nanotube transistors. Technical Proceedings of the 2002 International Conference on Computational Nanoscience and Nanotechnology 2:298.

Léonard, F, J Tersoff. (2002). Multiple functionality in nanotube transistors. Physical Review Letters 88:258302.


Léonard, F, J Tersoff. (2000). Negative differential resistance in nanotube devices. Physical Review Letters 85:4767.

Léonard, F, J Tersoff. (2000). Role of Fermi-level pinning in nanotube Schottky diodes. Physical Review Letters 84:4693.


Léonard, F, RC Desai. (1999). Implications of a model for instability during film growth for strained InGaAs and SiGe layers. Applied Physics Letters 74:40.

Léonard, F, J Tersoff. (1999). Novel length scales in nanotube devices. Physical Review Letters 83:5174.


Léonard, F, RC Desai. (1998). Alloy decomposition and surface instabilities in thin films. Physical Review B 57:4805.

Léonard, F, RC Desai. (1998). Atomic ordering and surface instabilities in thin films. Physics in Canada 54:230.

Léonard, F, RC Desai. (1998). Atomic ordering and the surface morphology of thin films. Applied Physics Letters 73:208.

Léonard, F, RC Desai. (1998). Spinodal decomposition and dislocation lines in thin films and bulk materials. Physical Review B 58:8277.


Léonard, F, RC Desai. (1997). Chemical ordering during surface growth. Physical Review B 55:9990.

Léonard, F, RC Desai. (1997). Elastic effects and phase segregation during the growth of thin alloy layers by molecular-beam epitaxy. Physical Review B 56:4955.

Léonard, F, M Laradji, RC Desai. (1997). Molecular beam epitaxy in the presence of phase separation. Physical Review B 55:1887.

Léonard, F, M Laradji, RC Desai. (1997). Phase separation in heteroepitaxial thin film growth. Physica A 239:129.