Prof. David A. Powell Profile

Prof. David A. Powell

Research Fellow at Australian National Univ

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Author

Publications (10)

Proceedings Article | 9 October 2019 Presentation + Paper

Ultrathin tunable terahertz absorbers based on electrostatically actuated metamaterial

Mingkai Liu, Mohamad Susli, Dilusha Silva, Gino Putrino, Hemendra Kala, Shuting Fan, Michael Cole, Lorenzo Faraone, Vincent Wallace, Willie Padilla, David Powell, Ilya Shadrivov, Mariusz Martyniuk

Proceedings Volume 11159, 1115908 (2019) https://doi.org/10.1117/12.2534282

KEYWORDS: Terahertz radiation, Metamaterials, Microelectromechanical systems, Absorption, Imaging spectroscopy, Silicon, Spectroscopy, Fabrication, Electromagnetism, Near field

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Proceedings Article | 19 April 2017 Presentation

Tunable flexible metasurfaces (Conference Presentation)

Yair Zarate, Ilya Shadrivov, David Powell

Proceedings Volume 10103, 101031C (2017) https://doi.org/10.1117/12.2252042

KEYWORDS: Technologies and applications, Current controlled current source, Electromagnetism, Resonators, Control systems, Metamaterials, Wavefronts, Polarization control, Microwave radiation, Flexible displays

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Proceedings Article | 19 April 2017 Presentation

Terahertz chiral structures with large optical activity (Conference Presentation)

Michael Cole, Wen-chen Chen, Willie Padilla, Sergey Kruk, David Powell, Ilya Shadrivov

Proceedings Volume 10103, 101031A (2017) https://doi.org/10.1117/12.2251777

KEYWORDS: Dichroic materials, Plasmonics, Dielectric polarization, Optical activity, Metamaterials, Terahertz spectroscopy, Dielectrics, Structural design, Electromagnetic radiation, Chiral metamaterials

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Proceedings Article | 9 November 2016 Presentation

Resolving nanophotonic spectra with quasi-normal modes (Conference Presentation)

David Powell

Proceedings Volume 9921, 99211B (2016) https://doi.org/10.1117/12.2237428

KEYWORDS: Nanophotonics, Particles, Plasmonics, Dielectrics, Spherical lenses, Destructive interference, Current controlled current source

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Proceedings Article | 12 November 2014 Paper

Metasurfaces inner symmetries: from square lattices to quasicrystalline layouts (presentation video)

Sergey Kruk, Alexander Poddubny, Christian Helgert, Manuel Decker, Isabelle Staude, Christoph Menzel, Christoph Etrich, Carsten Rockstuhl, David Powell, Thomas Pertsch, Dragomir Neshev, Yuri Kivshar

Proceedings Volume 9160, 91600B (2014) https://doi.org/10.1117/12.2060982

KEYWORDS: Video, Optical properties, Polarization, Mirrors, Optical activity, Dichroic materials, Optical fabrication, Nanolithography, Optical testing, Nanostructuring

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Proceedings Article | 15 October 2012 Paper

Tunable and nonlinear fishnet metamaterials based on liquid crystal infiltration

Sergey Kruk, Alexander Minovich, James Farnell, Ian McKerracher, Fouad Karouta, Jie Tian, David Powell, Ilya Shadrivov, Hark Hoe Tan, Chennupati Jagadish, Dragomir Neshev, Yuri Kivshar

Proceedings Volume 8455, 84552O (2012) https://doi.org/10.1117/12.931309

KEYWORDS: Metamaterials, Liquid crystals, Refractive index, Magnetism, Dielectrics, Molecules, Nonlinear response, Solids, Metals, Magnesium fluoride

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Proceedings Article | 29 April 2010 Paper

Tuning methods for metamaterials

M. Lapine, D. Powell, M. Gorkunov, I. Shadrivov, Yu. Kivshar

Proceedings Volume 7711, 77111N (2010) https://doi.org/10.1117/12.855119

KEYWORDS: Metamaterials, Magnetism, Near field, Inductive coupling, Chemical elements, Waveguides, Inductance, Resonators, Superlattices, Split ring resonators

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Proceedings Article | 28 February 2005 Paper

Optimization of film thickness for thermoelectric micro-Peltier cooler

Sasikaran Kandasamy, Damien Pachoud, David Powell, Kourosh Kalantar-zadeh, Gary Rosengarten, Anthony Holland, Wojtek Wlodarski

Proceedings Volume 5649, (2005) https://doi.org/10.1117/12.582256

KEYWORDS: Thermoelectric materials, Temperature metrology, Bismuth, Antimony, Tellurium, Thin films, Semiconductors, P-type semiconductors, Connectors, Instrument modeling

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Proceedings Article | 24 April 2003 Paper

Layered SAW nitrogen dioxide sensor with WO3 selective layer

Samuel Ippolito, Kourosh Kalantar-zadeh, Adrian Trinchi, David Powell, Wojtek Wlodarski

Proceedings Volume 5116, (2003) https://doi.org/10.1117/12.512086

KEYWORDS: Sensors, Zinc oxide, Acoustics, Transducers, Thin films, NOx, Wave propagation, Atmospheric propagation, Tungsten, Metals

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Proceedings Article | 14 November 2002 Paper

Finite-element analysis for simulation of layered SAW devices with xy LiNbO3 substrate

Samuel Ippolito, Kourosh Kalantar-zadeh, Wojtek Wlodarski, David Powell

Proceedings Volume 4935, (2002) https://doi.org/10.1117/12.469080

KEYWORDS: Acoustics, Finite element methods, Wave propagation, Zinc oxide, Instrument modeling, Filtering (signal processing), Electromagnetism, Radio propagation, Transducers, Motion models

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Showing 5 of 10 publications

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