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Characterization and modeling of a bulk acoustic wave particle focusing device

2008 IEEE International Frequency Control Symposium, FCS

Ravula, Surendra K.; Branch, Darren W.; Westlake, Karl; Brener, Igal

In this paper, we discuss our work in the modeling and characterization of an acousdc-microfluidlc focusing device that uses standing bulk acoustic waves to focus particles under flow. Modeling was done using Comsol Multiphysics® (Comsol, Los Angeles, CA), a multiphysics FEM tool, and the performance of the device was assessed through coefficient of variance (CV) measurements using a confocal microscope. © 2008 IEEE.

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TYPE Conference YEAR 2008
OSTIScopus

Flexible, large-area metamaterials fabricated on thin silicon nitride membranes

2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS

Peralta, X.G.; Arrington, C.L.; Wanke, M.C.; Brener, Igal; Williams, John D.; Smirnova, E.; Taylor, A.J.; O'Hara, J.F.; Strikwerda, A.; Averitt, R.D.; Padilla, W.J.

We present terahertz metamaterials fabricated on large-area, free-standing thin (≤1 μm) silicon nitride membranes with the aim of reducing dielectric losses, enhancing metamaterial sensing capabilities, and enabling flexible and conformable designs. © 2008 Optical Society of America.

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TYPE Conference YEAR 2008
ScopusOSTI

Integrated optical bio sensors

Optics InfoBase Conference Papers

Brener, Igal

We will present our recent progress on 1) waveguide-based sensor arrays that can operate as high density immunoassay sensors for detection of proteins and other biomolecules in solution, 2) metamaterial and plasmonic-based chem-bio sensors. © 2008 Optical Society of America.

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TYPE Conference YEAR 2008
OSTIScopus

Microfluidics and microacoustics for miniature flow cytometry

2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings

Ravula, Surendra K.; Branch, Darren W.; Sigman, Jennifer; Clem, Paul; Kaduchak, Gregory; Brener, Igal

Flow cytometry is an indispensable tool in clinical diagnostics, for example in cancer, AIDS, infectious disease outbreaks, microbiology, and others. The cost and size of existing cytometers precludes their entry into field clinics, water monitoring, agriculture/veterinary diagnostics, and rapidly deployable biothreat detection. Much of the cost and footprint of conventional cytometers is dictated by the high speed achieved by cells or beads in a hydrodynamically focused stream. This constraint is removed by using ultrasonic focusing in a parallel microfluidic architecture. In this paper, we describe our progress towards a microfabricated flow cytometer that uses bulk and microfabricated planar piezoelectric transducers in glass microfluidic channels. In addition to experimental data, initial modeling data to predict the performance of our transducers are discussed.

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TYPE Conference YEAR 2007
ScopusOSTI
Results 426–450 of 451
Results 426–450 of 451