Dr David Powell

IT Coordinator & Senior Lecturer
School of Engineering and Information Technology

LOCATION

Room SR102, Building 32

  • ABOUT
  • PUBLICATIONS

Modes of electromagnetic meta-atoms

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 metamaterials

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

Liu M; Yang Q; Rifat AA; Raj V; Komar A; Han J; Rahmani M; Hattori HT; Neshev D; Powell DA; Shadrivov IV, 2019, 'Deeply Subwavelength Metasurface Resonators for Terahertz Wavefront Manipulation', Advanced Optical Materials, vol. 7, http://dx.doi.org/10.1002/adom.201900736

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; Alu A; Marburg S; Powell D, 2019, 'Acoustic meta-atom with experimentally verified maximum Willis coupling', Nature Communications, vol. 10, pp. 3148 - 3148, http://dx.doi.org/10.1038/s41467-019-10915-5

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

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

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

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

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

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

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

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

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

Xu WZ; Ren FF; Ye J; Lu H; Liang L; Huang X; Liu M; Shadrivov IV; Powell DA; Yu G; Jin B; Zhang R; Zheng Y; Tan HH; Jagadish C, 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

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

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

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 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

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

Slobozhanyuk AP; Ginzburg P; Powell DA; Iorsh I; Shalin AS; Segovia P; Krasavin AV; Wurtz GA; Podolskiy VA; Belov PA; Zayats AV, 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

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

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

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

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

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

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

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, pp. 151102-1 - 151101-4, http://dx.doi.org/10.1063/1.4897949

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

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

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

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

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

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 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Showing 1 - 50 of 135 publications