Dr David Powell

IT Coordinator & Senior Lecturer
School of Engineering and Information Technology

LOCATION

Room SR102, Building 32

  • ABOUT
  • PUBLICATIONS

Modes of electromagnetic meta-atomshttps://lh3.googleusercontent.com/4W-8JStVqVw9cpPq5ISy0S1FjjEIVpPrinA8Hk..." style="float right;" width="200" />

I am a Senior Lecturer at the School of Engineering and Information Technology, UNSW Canberra. I work on metamaterials, structured materials with unusual electromagnetic properties. I have expertise in microwave, acoustic and terahertz experiments, particularly in the field of nonlinear and tunable metamaterials. I am a member of the Advanced Electromagnetics group.

Research Projects and PhD supervision

Enquiries are welcome from potential PhD candidates who are interested in conducting research in the following areas:

While specific expertise in these areas is not required, a solid background in electromagnetic or acoustic waves is essential. Projects can involve theory, experiment, and/or numerical simulation.

To be admitted to a UNSW PhD you must meet the formal entry requirements. UNSW has an online tool that can help you to work out whether you are eligible for admission.

Strong candidates should be eligible for one of the scholarship schemes available from UNSW Canberra

Publications and Profile

My Google Scholar Profile contains the most up to date list of all my research publications

Background

I obtained my PhD from RMIT University in 2006, in the field of surface acoustic wave biosensors. From 2006-2017 I was a Researcher with the Nonlinear Physics Centre of the Australian National University, where I conducted research on fundamental and applied aspects of metamaterials, operating in the microwave, terahertz, infra-red and acoustic domains. Since 2017 I have been a Senior Lecturer at the School of Engineering and Information Technology, UNSW Canberra.

System for measuring acoustic metamaterialshttps://lh3.googleusercontent.com/t9HN3Uov1JAJo_dQxXxX4p4F4G3d-8Yk8i5W_w..." style="float right;" width="350" />

My research has demonstrated several new forms of nonlinear metamaterials, and a number of unique tuning mechanisms for reconfiguration of metamaterial functionality. A strong area of interest is metamaterials which combine electromagnetic and mechanical degrees of freedom to yield new coupled dynamics. I have made theoretical contributions to the phenomena of bianisotropy and chirality. I have contributed to the understanding modes in open resonant systems such as metamaterials, having released an open-source code called OpenModes, for finding the modes of open electromagnetic structures with strong radiation losses.

Keywords

Metamaterials, electromagnetism, nanophotonics, computational electromagnetics, microwaves, millimetre waves, acoustics, nonlinear, tunable, active structures

 

Book Chapters

Powell DA; Liu M; Lapine M, 2015, 'Coupled electromagnetic and elastic dynamics in metamaterials', in Springer Series in Materials Science, pp. 59 - 87, http://dx.doi.org/10.1007/978-3-319-08386-5_4

Journal articles

Olk AE; Powell DA, 2019, 'Accurate Metasurface Synthesis Incorporating Near-Field Coupling Effects', Physical Review Applied, vol. 11, http://dx.doi.org/10.1103/PhysRevApplied.11.064007

Melnikov A; Chiang YK; Quan L; Oberst S; Alù A; Marburg S; Powell D, 2019, 'Acoustic meta-atom with experimentally verified maximum Willis coupling', Nature Communications, vol. 10, http://dx.doi.org/10.1038/s41467-019-10915-5

Liu M; Yang Q; Rifat AA; Raj V; Komar A; Han J; Rahmani M; Hattori HT; Neshev D; Powell DA, 2019, 'Deeply Subwavelength Metasurface Resonators for Terahertz Wavefront Manipulation', Advanced Optical Materials, http://dx.doi.org/10.1002/adom.201900736

Liu M; Powell DA; Zarate Y; Shadrivov IV, 2018, 'Huygens' Metadevices for Parametric Waves', Physical Review X, vol. 8, http://dx.doi.org/10.1103/PhysRevX.8.031077

Fathnan AA; Powell DA, 2018, 'Bandwidth and size limits of achromatic printed-circuit metasurfaces', Optics Express, vol. 26, pp. 29440 - 29450, http://dx.doi.org/10.1364/OE.26.029440

Jordaan J; Punzet S; Melnikov A; Sanches A; Oberst S; Marburg S; Powell DA, 2018, 'Measuring monopole and dipole polarizability of acoustic meta-atoms', Applied Physics Letters, vol. 113, http://dx.doi.org/10.1063/1.5052661

Powell DA, 2017, 'Interference between the Modes of an All-Dielectric Meta-atom', Physical Review Applied, vol. 7, http://dx.doi.org/10.1103/PhysRevApplied.7.034006

Liu M; Powell DA; Guo R; Shadrivov IV; Kivshar YS, 2017, 'Polarization-Induced Chirality in Metamaterials via Optomechanical Interaction', Advanced Optical Materials, vol. 5, http://dx.doi.org/10.1002/adom.201600760

Zárate Y; Shadrivov IV; Powell DA, 2017, 'Tunable focusing by a flexible metasurface', Photonics and Nanostructures - Fundamentals and Applications, vol. 26, pp. 62 - 68, http://dx.doi.org/10.1016/j.photonics.2017.07.004

Cole MA; Chen WC; Liu M; Kruk SS; Padilla WJ; Shadrivov IV; Powell DA, 2017, 'Strong Broadband Terahertz Optical Activity through Control of the Blaschke Phase with Chiral Metasurfaces', Physical Review Applied, vol. 8, http://dx.doi.org/10.1103/PhysRevApplied.8.014019

Liu M; Susli M; Silva D; Putrino G; Kala H; Fan S; Cole M; Faraone L; Wallace VP; Padilla WJ, 2017, 'Ultrathin tunable terahertz absorber based on MEMS-driven metamaterial', Microsystems and Nanoengineering, vol. 3, http://dx.doi.org/10.1038/micronano.2017.33

Liu L; Zarate Y; Hattori HT; Neshev DN; Shadrivov IV; Powell DA, 2016, 'Terahertz focusing of multiple wavelengths by graphene metasurfaces', Applied Physics Letters, vol. 108, http://dx.doi.org/10.1063/1.4940231

Cole MA; Powell DA; Shadrivov IV, 2016, 'Strong terahertz absorption in all-dielectric Huygens' metasurfaces', Nanotechnology, vol. 27, http://dx.doi.org/10.1088/0957-4484/27/42/424003

Liu M; Fan K; Padilla W; Powell DA; Zhang X; Shadrivov IV, 2016, 'Tunable Meta-Liquid Crystals', Advanced Materials, vol. 28, pp. 1553 - 1558, http://dx.doi.org/10.1002/adma.201504924

Zarate Y; Babaee S; Kang SH; Neshev DN; Shadrivov IV; Bertoldi K; Powell DA, 2016, 'Elastic metamaterials for tuning circular polarization of electromagnetic waves', Scientific Reports, vol. 6, http://dx.doi.org/10.1038/srep28273

Xu WZ; Ren FF; Ye J; Lu H; Liang L; Huang X; Liu M; Shadrivov IV; Powell DA; Yu G, 2016, 'Electrically tunable terahertz metamaterials with embedded large-area transparent thin-film transistor arrays', Scientific Reports, vol. 6, http://dx.doi.org/10.1038/srep23486

Matsui T; Inose Y; Powell DA; Shadrivov IV, 2016, 'Electroactive Tuning of Double-Layered Metamaterials Based on π-Conjugated Polymer Actuators', Advanced Optical Materials, vol. 4, pp. 135 - 140, http://dx.doi.org/10.1002/adom.201500276

Slobozhanyuk AP; Ginzburg P; Powell DA; Iorsh I; Shalin AS; Segovia P; Krasavin AV; Wurtz GA; Podolskiy VA; Belov PA, 2015, 'Purcell effect in hyperbolic metamaterial resonators', Physical Review B - Condensed Matter and Materials Physics, vol. 92, http://dx.doi.org/10.1103/PhysRevB.92.195127

Kruk SS; Poddubny AN; Powell DA; Helgert C; Decker M; Pertsch T; Neshev DN; Kivshar YS, 2015, 'Polarization properties of optical metasurfaces of different symmetries', Physical Review B - Condensed Matter and Materials Physics, vol. 91, http://dx.doi.org/10.1103/PhysRevB.91.195401

Liu L; Chen WC; Powell DA; Padilla WJ; Karouta F; Hattori HT; Neshev DN; Shadrivov IV, 2014, 'Post-processing approach for tuning multi-layered metamaterials', Applied Physics Letters, vol. 105, http://dx.doi.org/10.1063/1.4897949

Rusak E; Staude I; Decker M; Sautter J; Miroshnichenko AE; Powell DA; Neshev DN; Kivshar YS, 2014, 'Hybrid nanoantennas for directional emission enhancement', Applied Physics Letters, vol. 105, http://dx.doi.org/10.1063/1.4903219

Powell DA, 2014, 'Resonant dynamics of arbitrarily shaped meta-atoms', Physical Review B - Condensed Matter and Materials Physics, vol. 90, http://dx.doi.org/10.1103/PhysRevB.90.075108

Liu M; Powell DA; Shadrivov IV; Lapine M; Kivshar YS, 2014, 'Spontaneous chiral symmetry breaking in metamaterials', Nature Communications, vol. 5, http://dx.doi.org/10.1038/ncomms5441

Matsui T; Liu M; Powell DA; Shadrivov IV; Kivshar YS, 2014, 'Electromagnetic tuning of resonant transmission in magnetoelastic metamaterials', Applied Physics Letters, vol. 104, http://dx.doi.org/10.1063/1.4873936

Hannam K; Powell DA; Shadrivov IV; Kivshar YS, 2014, 'Broadband chiral metamaterials with large optical activity', Physical Review B - Condensed Matter and Materials Physics, vol. 89, http://dx.doi.org/10.1103/PhysRevB.89.125105

Slobozhanyuk AP; Kapitanova PV; Filonov DS; Powell DA; Shadrivov IV; Lapine M; Belov PA; McPhedran RC; Kivshar YS, 2014, 'Nonlinear interaction of meta-atoms through optical coupling', Applied Physics Letters, vol. 104, http://dx.doi.org/10.1063/1.4861388

Liu L; Shadrivov IV; Powell DA; Raihan R; Hattori HT; Decker M; Mironov E; Neshev DN, 2013, 'Temperature control of terahertz metamaterials with liquid crystals', IEEE Transactions on Terahertz Science and Technology, vol. 3, pp. 827 - 831, http://dx.doi.org/10.1109/TTHZ.2013.2285570

Rose A; Powell DA; Shadrivov IV; Smith DR; Kivshar YS, 2013, 'Circular dichroism of four-wave mixing in nonlinear metamaterials', Physical Review B - Condensed Matter and Materials Physics, vol. 88, http://dx.doi.org/10.1103/PhysRevB.88.195148

Liu M; Powell DA; Shadrivov IV; Lapine M; Kivshar YS, 2013, 'Self-oscillations in nonlinear torsional metamaterials', New Journal of Physics, vol. 15, http://dx.doi.org/10.1088/1367-2630/15/7/073036

Liu M; Sun Y; Powell DA; Shadrivov IV; Lapine M; McPhedran RC; Kivshar YS, 2013, 'Nonlinear response via intrinsic rotation in metamaterials', Physical Review B - Condensed Matter and Materials Physics, vol. 87, http://dx.doi.org/10.1103/PhysRevB.87.235126

Slobozhanyuk AP; Lapine M; Powell DA; Shadrivov IV; Kivshar YS; McPhedran RC; Belov PA, 2013, 'Flexible helices for nonlinear metamaterials', Advanced Materials, vol. 25, pp. 3409 - 3412, http://dx.doi.org/10.1002/adma.201300840

Hannam K; Powell DA; Shadrivov IV; Kivshar YS, 2013, 'Dispersionless optical activity in metamaterials', Applied Physics Letters, vol. 102, http://dx.doi.org/10.1063/1.4807438

Khodasevych IE; Shadrivov IV; Powell DA; Rowe WST; Mitchell A, 2013, 'Pneumatically switchable graded index metamaterial lens', Applied Physics Letters, vol. 102, http://dx.doi.org/10.1063/1.4788918

Kruk SS; Powell DA; Minovich A; Neshev DN; Kivshar YS, 2012, 'Spatial dispersion of multilayer fishnet metamaterials', Optics Express, vol. 20, pp. 15100 - 15105, http://dx.doi.org/10.1364/OE.20.015100

Liu M; Powell DA; Shadrivov IV; Kivshar YS, 2012, 'Optical activity and coupling in twisted dimer meta-atoms', Applied Physics Letters, vol. 100, http://dx.doi.org/10.1063/1.3694269

Minovich A; Farnell J; Neshev DN; McKerracher I; Karouta F; Tian J; Powell DA; Shadrivov IV; Hoe Tan H; Jagadish C, 2012, 'Liquid crystal based nonlinear fishnet metamaterials', Applied Physics Letters, vol. 100, http://dx.doi.org/10.1063/1.3695165

Lapine M; Shadrivov IV; Powell DA; Kivshar YS, 2012, 'Magnetoelastic metamaterials', Nature Materials, vol. 11, pp. 30 - 33, http://dx.doi.org/10.1038/nmat3168

Liu M; Powell DA; Shadrivov IV, 2012, 'Chiral meta-atoms rotated by light', Applied Physics Letters, vol. 101, http://dx.doi.org/10.1063/1.4737441

Hannam KE; Powell DA; Shadrivov IV; Kivshar YS, 2012, 'Tuning the nonlinear response of coupled split-ring resonators', Applied Physics Letters, vol. 100, http://dx.doi.org/10.1063/1.3689775

Lapine M; Shadrivov IV; Powell DA; Kivshar YS, 2011, 'Metamaterials with conformational nonlinearity', Scientific Reports, vol. 1, http://dx.doi.org/10.1038/srep00138

Liu XX; Powell DA; Alù A, 2011, 'Correcting the Fabry-Perot artifacts in metamaterial retrieval procedures', Physical Review B - Condensed Matter and Materials Physics, vol. 84, http://dx.doi.org/10.1103/PhysRevB.84.235106

Ha S; Sukhorukov AA; Lavrinenko AV; Shadrivov IV; Powell DA; Kivshar YS, 2011, 'Observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides', Applied Physics Letters, vol. 98, http://dx.doi.org/10.1063/1.3553785

Powell DA; Hannam K; Shadrivov IV; Kivshar YS, 2011, 'Near-field interaction of twisted split-ring resonators', Physical Review B - Condensed Matter and Materials Physics, vol. 83, http://dx.doi.org/10.1103/PhysRevB.83.235420

Rosanov NN; Vysotina NV; Shatsev AN; Shadrivov IV; Powell DA; Kivshar YS, 2011, 'Discrete dissipative localized modes in nonlinear magnetic metamaterials', Optics Express, vol. 19, pp. 26500 - 26506, http://dx.doi.org/10.1364/OE.19.026500

Zhu W; Shadrivov I; Powell D; Kivshar Y, 2011, 'Hiding in the corner', Optics Express, vol. 19, pp. 20827 - 20832, http://dx.doi.org/10.1364/OE.19.020827

Shadrivov IV; Fedotov VA; Powell DA; Kivshar YS; Zheludev NI, 2011, 'Electromagnetic wave analogue of an electronic diode', New Journal of Physics, vol. 13, http://dx.doi.org/10.1088/1367-2630/13/3/033025

Somerville WRC; Powell DA; Shadrivov IV, 2011, 'Second harmonic generation with zero phase velocity waves', Applied Physics Letters, vol. 98, http://dx.doi.org/10.1063/1.3580616

Minovich A; Neshev DN; Powell DA; Shadrivov IV; Lapine M; McKerracher I; Hattori HT; Tan HH; Jagadish C; Kivshar YS, 2010, 'Tilted response of fishnet metamaterials at near-infrared optical wavelengths', Physical Review B - Condensed Matter and Materials Physics, vol. 81, http://dx.doi.org/10.1103/PhysRevB.81.115109

Minovich A; Neshev DN; Powell DA; Kivshar YS, 2010, 'Influence of the substrate on negative index fishnet metamaterials', Optics Communications, vol. 283, pp. 4770 - 4774, http://dx.doi.org/10.1016/j.optcom.2010.06.098

Powell DA; Lapine M; Gorkunov MV; Shadrivov IV; Kivshar YS, 2010, 'Metamaterial tuning by manipulation of near-field interaction', Physical Review B - Condensed Matter and Materials Physics, vol. 82, http://dx.doi.org/10.1103/PhysRevB.82.155128

Powell DA; Kivshar YS, 2010, 'Substrate-induced bianisotropy in metamaterials', Applied Physics Letters, vol. 97, http://dx.doi.org/10.1063/1.3486480

Minovich A; Neshev DN; Powell DA; Shadrivov IV; Kivshar YS, 2010, 'Tunable fishnet metamaterials infiltrated by liquid crystals', Applied Physics Letters, vol. 96, http://dx.doi.org/10.1063/1.3427429

Powell DA; Shadrivov IV; Kivshar YS, 2009, 'Asymmetric parametric amplification in nonlinear left-handed transmission lines', Applied Physics Letters, vol. 94, http://dx.doi.org/10.1063/1.3089842

Sukhorukov AA; Ha S; Shadrivov IV; Powell DA; Kivshar YS, 2009, 'Dispersion extraction with near-field measurements in periodic waveguides', Optics Express, vol. 17, pp. 3716 - 3721, http://dx.doi.org/10.1364/OE.17.003716

Powell DA; Shadrivov IV; Kivshar YS, 2009, 'Nonlinear electric metamaterials', Applied Physics Letters, vol. 95, http://dx.doi.org/10.1063/1.3212726

Lapine M; Powell D; Gorkunov M; Shadrivov I; Marqús R; Kivshar Y, 2009, 'Structural tunability in metamaterials', Applied Physics Letters, vol. 95, http://dx.doi.org/10.1063/1.3211920

Powell DA; Alù A; Edwards B; Vakil A; Kivshar YS; Engheta N, 2009, 'Nonlinear control of tunneling through an epsilon-near-zero channel', Physical Review B - Condensed Matter and Materials Physics, vol. 79, http://dx.doi.org/10.1103/PhysRevB.79.245135

Powell DA, 2008, 'The sub-wavelength imaging performance of disordered wire media', Physics Letters, Section A: General, Atomic and Solid State Physics, vol. 372, pp. 3919 - 3921, http://dx.doi.org/10.1016/j.physleta.2008.02.080

Powell DA; Shadrivov IV; Kivshar YS, 2008, 'Multistability in nonlinear left-handed transmission lines', Applied Physics Letters, vol. 92, http://dx.doi.org/10.1063/1.2955531

Powell DA; Shadrivov IV; Kivshar YS, 2008, 'Cut-wire-pair structures as two-dimensional magnetic metamaterials', Optics Express, vol. 16, pp. 15185 - 15190, http://dx.doi.org/10.1364/OE.16.015185

Shadrivov IV; Powell DA; Morrison SK; Kivshar YS; Milford GN, 2007, 'Scattering of electromagnetic waves in metamaterial superlattices', Applied Physics Letters, vol. 90, http://dx.doi.org/10.1063/1.2741148

Sadek AZ; Powell DA; Wlodarski W; Kalantar-zadeh K, 2007, 'Polyaniline Nanofiber Based Surface Acoustic Wave Gas Sensors—Effect of Nanofiber Diameter on H2 Response', IEEE Sensors Journal, vol. 7, pp. 213 - 218, http://dx.doi.org/10.1109/JSEN.2006.883769

Powell DA; Kalantar-zadeh K; Wlodarski W, 2007, 'Spatial sensitivity distribution of surface acoustic wave resonator sensors', IEEE Sensors Journal, vol. 7, pp. 204 - 212, http://dx.doi.org/10.1109/JSEN.2006.882779

Powell DA; Shadrivov IV; Kivshar YS; Gorkunov MV, 2007, 'Self-tuning mechanisms of nonlinear split-ring resonators', Applied Physics Letters, vol. 91, http://dx.doi.org/10.1063/1.2794733

Kalantar-Zadeh K; Powell DA; Sadek AZ; Wlodarski W; Yang QB; Li YX, 2006, 'Comparison of ZnO/64° LiNbO3 and ZnO/36° LiTaO 3 surface acoustic wave devices for sensing applications', Sensor Letters, vol. 4, pp. 135 - 138, http://dx.doi.org/10.1166/sl.2006.015

Powell DA; Kalantar-Zadeh K; Ippolito S; Wlodarski W, 2005, 'Comparison of conductometric gas sensitivity of surface acoustic wave modes in layered structures', Sensor Letters, vol. 3, pp. 66 - 70, http://dx.doi.org/10.1166/sl.2005.011

Kalantar-Zadeh K; Powell DA; Wlodarski W; Ippolito S; Galatsis K, 2003, 'Comparison of layered based SAW sensors', Sensors and Actuators, B: Chemical, vol. 91, pp. 303 - 308, http://dx.doi.org/10.1016/S0925-4005(03)00091-1

Li LL; Wlodarski W; Galatsis K; Powell DA, 2003, 'A study of CO sensors with oscillatory response', Sensors and Actuators, B: Chemical, vol. 96, pp. 610 - 614, http://dx.doi.org/10.1016/j.snb.2003.07.003

Conference Papers

Fathnan AA; Powell DA, 2019, 'Efficiency calculation of non-periodic metasurface based on modified near field to far field transformation', in Asia-Pacific Microwave Conference Proceedings, APMC, pp. 1312 - 1314, presented at , http://dx.doi.org/10.23919/APMC.2018.8617186

Liu M; Powell DA; Zarate Y; Shadrivov IV, 2019, 'Time-varying huygens' metadevices for parametric wave control', in Optics InfoBase Conference Papers, presented at , http://dx.doi.org/10.1364/CLEO-QELS.2019.FF1B.4

Liu M; Powell DA; Zarate Y; Shadrivov IV, 2019, 'Time-Varying Huygens' Metadevices for Parametric Wave Control', in 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings, presented at , http://dx.doi.org/10.23919/CLEO.2019.8750115

Fathnan AA; Powell D, 2018, 'Design of Transmissive huygens metasurface using modified cross and patch structure', in 2018 International Conference on Information and Communications Technology, ICOIACT 2018, pp. 798 - 801, presented at , http://dx.doi.org/10.1109/ICOIACT.2018.8350794

Liu M; Zarate Y; Shadrivov IV; Powell DA, 2018, 'Time-varying metasurfaces for arbitrary parametric wave control', in Proceedings of the 2018 IEEE 7th Asia-Pacific Conference on Antennas and Propagation, APCAP 2018, pp. 512 - 513, presented at , http://dx.doi.org/10.1109/APCAP.2018.8537917

Esmati Z; Powell DA; Tyo JS, 2018, 'Using electrically-small HPEM antenna array elements to divide power and shape aperture fields', in 2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings, pp. 313 - 314, presented at , http://dx.doi.org/10.1109/APUSNCURSINRSM.2018.8609458

Liu L; Zarate Y; Hattori HT; Neshev DN; Shadrivov IV; Powell DA, 2017, 'Graphene metasurfaces for arbitrary wavefront control', in 2016 IEEE Photonics Conference, IPC 2016, pp. 386 - 387, presented at , http://dx.doi.org/10.1109/IPCon.2016.7831150

Liu M; Susli M; Silva D; Putrino G; Kala H; Fan S; Cole M; Faraone L; Wallace VP; Padilla WJ, 2017, 'Fast tunable terahertz absorber based on a MEMS-driven metamaterial', in 2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings, pp. 1 - 2, presented at , http://dx.doi.org/10.1364/CLEO_AT.2017.FM1G.5

Liu M; Fan K; Padilla W; Powell DA; Zhang X; Shadrivov IV, 2016, 'Mimicking liquid crystals with metamaterials', in 2016 Conference on Lasers and Electro-Optics, CLEO 2016, presented at

Liu L; Chen WC; Powell DA; Padilla WJ; Karouta F; Hattori HT; Neshev DN; Shadrivov IV, 2015, 'Mechanically tunable bi-layer terahertz metamaterials', in Conference on Lasers and Electro-Optics Europe - Technical Digest, presented at

Rusak E; Guo R; Staude I; Decker M; Sautter J; Miroshnichenko AE; Powell DA; Neshev DN; Kivshar YS, 2015, 'Hybrid metal-dielectric nanoantennas for directional emission enhancement', in CLEO: QELS - Fundamental Science, CLEO_QELS 2015, pp. 1551p, presented at , http://dx.doi.org/10.1364/CLEO_QELS.2015.FTu2E.2

Rusak E; Guo R; Staude I; Decker M; Sautter J; Miroshnichenko AE; Powell DA; Neshev DN; Kivshar YS, 2015, 'Hybrid metal-dielectric nanoantennas for directional emission enhancement', in Conference on Lasers and Electro-Optics Europe - Technical Digest, presented at

Rusak E; Guo R; Staude I; Decker M; Sautter J; Miroshnichenko AE; Powell DA; Brener I; Neshev DN; Kivshar YS, 2014, 'Metal-dielectric nanoantennas for enhancement of directional emission', in Optics InfoBase Conference Papers, presented at

Kruk SS; Poddubny A; Helgert C; Decker M; Powell DA; Pertsch T; Neshev DN; Kivshar YS, 2014, 'Polarization phenomena in periodic metasurfaces at oblique incidence', in 2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2014, pp. 373 - 375, presented at , http://dx.doi.org/10.1109/MetaMaterials.2014.6948564

Kruk SS; Decker M; Helgert C; Staude I; Menzel C; Powell DA; Etrich C; Rockstuhl C; Pertsch T; Neshev DN, 2013, 'Symmetry properties of metamaterials at oblique incidence', in 2013 7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2013, pp. 205 - 207, presented at , http://dx.doi.org/10.1109/MetaMaterials.2013.6809001

Slobozhanyuk AP; Kapitanova PV; Shadrivov IV; Filonov DS; Powell DA; Belov PA; Lapine M; Kivshar YS, 2013, 'Light coupling in microwave metamaterials', in 2013 7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2013, pp. 190 - 192, presented at , http://dx.doi.org/10.1109/MetaMaterials.2013.6808996

Liu M; Sun Y; Powell DA; Shadrivov IV; Lapine M; McPhedran RC; Kivshar YS, 2013, 'Twists and shifts make nonlinear metamaterials', in 2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013, presented at , http://dx.doi.org/10.1109/CLEOE-IQEC.2013.6801918

Slobozhanyuk AP; Kapitanova PV; Filonov DS; Belov PA; Shadrivov IV; Powell DA; Kivshar YS; Lapine M, 2013, 'Photosensitive SRR-metamaterials', in IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), pp. 1190 - 1191, presented at , http://dx.doi.org/10.1109/APS.2013.6711255

Slobozhanyuk AP; Belov PA; Lapine M; McPhedran RC; Powell DA; Shadrivov IV; Kivshar YS, 2013, 'Novel nonlinear chiral metamaterials', in IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), pp. 488 - 489, presented at , http://dx.doi.org/10.1109/APS.2013.6710905

Liu M; Powell DA; Shadrivov IV; Lapine M; Kivshar YS, 2013, 'Dynamic optical activity and self-oscillation in torsional metamaterials', in 2013 7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2013, pp. 359 - 360, presented at , http://dx.doi.org/10.1109/MetaMaterials.2013.6809052

Liu M; Sun Y; Powell DA; Shadrivov IV; Lapine M; Mcphedran RC; Kivshar YS, 2013, 'Twists and shifts make nonlinear metamaterials', in Optics InfoBase Conference Papers, presented at

Kruk SS; Powell DA; Minovich A; Neshev DN; Kivshar YS, 2012, 'Topology of iso-frequency surfaces of multilayer fishnet metamaterials', in Frontiers in Optics, FIO 2012, presented at

Khodasevych IE; Shadrivov IV; Powell DA; Rowe WST; Mitchell A, 2012, 'Switchable graded index microwave metamaterial lens design using pneumatic actuation', in Asia-Pacific Microwave Conference Proceedings, APMC, pp. 451 - 453, presented at , http://dx.doi.org/10.1109/APMC.2012.6421628

Minovich A; Farnell J; Neshev DN; McKerracher I; Karouta F; Tian J; Powell DA; Shadrivov IV; Tan HH; Jagadish C, 2012, 'Nonlinear fishnet metamaterials based on liquid crystal infiltration', in 2012 Conference on Lasers and Electro-Optics, CLEO 2012, presented at

Powell DA, 2012, 'Linear and nonlinear coupling in metamaterials', in Proceedings of the 2012 International Conference on Electromagnetics in Advanced Applications, ICEAA'12, pp. 428 - 429, presented at , http://dx.doi.org/10.1109/ICEAA.2012.6328663

Kruk S; Minovich A; Farnell J; McKerracher I; Karouta F; Tian J; Powell DA; Shadrivov IV; Tan HH; Jagadish C, 2012, 'Tunable and nonlinear fishnet metamaterials based on liquid crystal infiltration', in Proceedings of SPIE - The International Society for Optical Engineering, presented at , http://dx.doi.org/10.1117/12.931309

Minovich A; Farnell J; Neshev DN; McKerracher I; Karouta F; Tian J; Powell DA; Shadrivov IV; Tan HH; Jagadish C, 2012, 'Nonlinear fishnet metamaterials based on liquid crystal infiltration', in Optics InfoBase Conference Papers, presented at

Hannam KE; Powell DA; Shadrivov IV; Kivshar YS, 2011, 'Tuning linear and nonlinear properties of broadside-coupled resonators', in 2011 Int. Quantum Electron. Conf., IQEC 2011 and Conf. Lasers and Electro-Optics, CLEO Pacific Rim 2011 Incorporating the Australasian Conf. Optics, Lasers and Spectroscopy and the Australian Conf., pp. 1044 - 1046, presented at , http://dx.doi.org/10.1109/IQEC-CLEO.2011.6193680

Somerville WRC; Powell DA; Shadrivov IV, 2011, 'Second harmonic generation in the zero-index regime', in 2011 Int. Quantum Electron. Conf., IQEC 2011 and Conf. Lasers and Electro-Optics, CLEO Pacific Rim 2011 Incorporating the Australasian Conf. Optics, Lasers and Spectroscopy and the Australian Conf., pp. 179 - 181, presented at , http://dx.doi.org/10.1109/IQEC-CLEO.2011.6193862

Lapine M; Shadrivov IV; Powell DA; Kivshar YS, 2011, 'Magnetoelastic metamaterials', in 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011, presented at , http://dx.doi.org/10.1109/CLEOE.2011.5943714

Powell DA; Hannam K; Shadrivov IV; Kivshar YS, 2011, 'Interaction of twisted split ring resonators', in 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011, presented at , http://dx.doi.org/10.1109/CLEOE.2011.5943645

Powell DA; Hannam K; Shadrivov IV; Kivshar YS, 2011, 'Interaction of twisted split ring resonators', in Optics InfoBase Conference Papers, presented at

Hannam KE; Powell DA; Shadrivov IV; Kivshar YS, 2011, 'Tuning linear and nonlinear properties of broadside-coupled resonators', in Optics InfoBase Conference Papers, pp. 1044 - 1046, presented at

Somerville WRC; Powell DA; Shadrivov IV, 2011, 'Second harmonic generation in the zero-index regime', in Optics InfoBase Conference Papers, pp. 179 - 181, presented at

Powell DA; Lapine M; Gorkunov M; Shadrivov IV; Kivshar YS, 2010, 'Metamaterial tuning using near-field interaction', in Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010, presented at

Minovich A; Farnell J; Neshev DN; Powell DA; Shadrivov IV; McKerracher I; Tan HH; Jagadish C; Kivshar YS, 2010, 'Infrared metamaterials tuned by liquid crystals', in Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD, pp. 27 - 28, presented at , http://dx.doi.org/10.1109/COMMAD.2010.5699761

Shadrivov IV; Fedotov VA; Powell DA; Zheludev NI; Kivshar YS, 2010, 'Giant nonlinear optical activity in chiral metamaterials', in Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD, pp. 87 - 88, presented at , http://dx.doi.org/10.1109/COMMAD.2010.5699794

Lapine M; Powell D; Gorkunov M; Shadrivov I; Kivshar Y, 2010, 'Tuning methods for metamaterials', in Proceedings of SPIE - The International Society for Optical Engineering, presented at , http://dx.doi.org/10.1117/12.855119

Powell DA; Lapine M; Gorkunov M; Shadrivov IV; Kivshar YS, 2010, 'Analysing and manipulating near-field interaction in metamaterials', in Proceedings - 2010 12th International Conference on Electromagnetics in Advanced Applications, ICEAA'10, pp. 87 - 88, presented at , http://dx.doi.org/10.1109/ICEAA.2010.5651751

Powell DA; Lapine M; Gorkunov M; Shadrivov IV; Kivshar YS, 2010, 'Metamaterial tuning using near-field interaction', in Optics InfoBase Conference Papers, presented at

Ha S; Sukhorukov AA; Powell DA; Shadrivov IV; Lavrinenko AV; Chigrin DN; Kivshar YS, 2009, 'Observation of slow-light dynamics in coupled periodic waveguides', in CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, presented at , http://dx.doi.org/10.1109/CLEOE-EQEC.2009.5192029

Ha S; Sukhorukov AA; Powell DA; Shadrivov IV; Lavrinenko AV; Chigrin DN; Kivshar YS, 2009, 'Observation of slow-light dynamics in coupled periodic waveguides', in Optics InfoBase Conference Papers, presented at

Powell DA; Shadrivov IV; Kivshar YS, 2008, 'Two-dimensional cut-wire-pair magnetic metamaterials', in Optics InfoBase Conference Papers, presented at

Ha S; Sukhorukov AA; Powell DA; Shadrivov IV; Lavrinenko AV; Chigrin DN; Kivshar YS, 2008, 'Observation of slow light tunneling in coupled periodic waveguides', in Optics InfoBase Conference Papers, presented at

Ha S; Sukhorukov AA; Powell DA; Shadrivov IV; Lavrinenko AV; Chigrin DN; Kivshar YS, 2008, 'Experimental observation of slow light tunneling in coupled periodic waveguides', in 2008 Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference On Optical Fibre Technology, OECC/ACOFT 2008, presented at , http://dx.doi.org/10.1109/OECCACOFT.2008.4610316

Shadrivov IV; Powell DA; Morrison SK; Milford G; Kivshar YS, 2007, 'Experimental studies of binary metamaterials', in Optics InfoBase Conference Papers, presented at

Shadrivov IV; Powell DA; Morrison SK; Milford G; Kivshar YS, 2007, 'Experimental studies of binary metamaterials', in Conference on Lasers and Electro-Optics Europe - Technical Digest, presented at , http://dx.doi.org/10.1109/CLEOE-IQEC.2007.4387047

Shadrivov IV; Powell DA; Morrison SK; Milford G; Kivshar YS, 2007, 'Experimental studies of binary metamaterials', in Optics InfoBase Conference Papers, presented at

Kandasamy S; Pachoud D; Powell DA; Kalantar-zadeh K; Rosengarten G; Holland A; Wlodarski W, 2005, 'Optimization of film thickness for thermoelectric micro-Peltier cooler', in Proceedings of SPIE - The International Society for Optical Engineering, pp. 640 - 647, presented at , http://dx.doi.org/10.1117/12.582256

Powell DA; Kalantar-zadeh K; Wlodarski W, 2005, 'Optimum sensitive area of surface acoustic wave resonator chemical and bio-sensors', in Proceedings of IEEE Sensors, pp. 1229 - 1232, presented at , http://dx.doi.org/10.1109/ICSENS.2005.1597928

Sadek AZ; Wlodarski W; Kalantar-Zadeh K; Powell DA; Hughes WL; Buchine BA; Wang ZL, 2005, 'H2 and NO2 gas sensors with ZnO nanobelt layer on 36° LiTaO3 and 64° LiNbO3 SAW transducers', in Proceedings of IEEE Sensors, pp. 1343 - 1346, presented at , http://dx.doi.org/10.1109/ICSENS.2005.1597956

Sadek AZ; Wlodarski W; Kalantar-Zadeh K; Powell DA; Hughes WL; Buchine BA; Wang ZL, 2005, 'H-2 and NO2 gas sensors with ZnO nanobelt layer on 36 degrees LiTaO3 and 64 degrees LiNbO(3)SAW transducers', in 2005 IEEE SENSORS, VOLS 1 AND 2, IEEE, Irvine, CA, pp. 1343 - 1346, presented at 4th IEEE Conference on Sensors, Irvine, CA, 31 October - 03 November 2005

Kalantar-zadeh K; Powell DA; Ippolito S; Wlodarski W, 2004, 'Study of layered SAW devices operating at different modes for gas sensing applications', in Proceedings - IEEE Ultrasonics Symposium, pp. 191 - 194, presented at

Powell DA; Kalantar-Zadeh K; Wlodarski W, 2004, 'Numerical calculation of SAW sensitivity: Application to ZnO/LiTaO 3 transducers', in Sensors and Actuators, A: Physical, pp. 456 - 461, presented at , http://dx.doi.org/10.1016/j.sna.2004.05.031

Ippolito SJ; Kalantar-Zadeh K; Powell DA; Wlodarski W, 2003, 'A 3-dimensional finite element approach for simulating acoustic wave propagation in layered SAW devices', in Proceedings of the IEEE Ultrasonics Symposium, pp. 303 - 306, presented at

Powell DA; Kalantar-Zadeh K; Wlodarski W, 2003, 'Comprehensive analysis of SAW sensor performance in liquid media by Green's function method', in Proceedings of the IEEE Ultrasonics Symposium, pp. 146 - 149, presented at

Ippolito SJ; Kalantar-zadeh K; Trinchi A; Powell DA; Wlodarski W, 2003, 'Layered SAW nitrogen dioxide sensor with WO3 selective layer', in Proceedings of SPIE - The International Society for Optical Engineering, pp. 904 - 911, presented at , http://dx.doi.org/10.1117/12.512086

Powell DA; Kalantar-Zadeh K; Ippolito S; Wlodarski W, 2002, 'A layered SAW device based on ZnO/LiTaO3 for liquid media sensing applications', in Proceedings of the IEEE Ultrasonics Symposium, pp. 493 - 496, presented at

Ippolito SJ; Kalantar-Zadeh K; Powell DA; Wlodarski W, 2002, 'A finite element approach for 3-dimensional simulation of layered acoustic wave transducers', in Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD, pp. 541 - 544, presented at , http://dx.doi.org/10.1109/COMMAD.2002.1237309

Ippolito SJ; Kalantar-Zadeh K; Wlodarski W; Powell DA, 2002, 'Finite-element analysis for simulation of layered SAW devices with XY LiNbO3substrate', in Proceedings of SPIE - The International Society for Optical Engineering, pp. 120 - 131, presented at , http://dx.doi.org/10.1117/12.469080

Other

Liu M; Powell D; Shadrivov I; Kivshar Y; Lapine M, Chiral torsional metamaterials