# Steven A. Cummer

### Publications

Papers Published

- A. Erentok and R. W. Ziolkowski and J. A. Nielsen and R. B. Greegor and C. G. Parazzoli and M. H. Tanielian and S. A. Cummer and B. I. Popa and T. Hand and D. C. Vier and S. Schultz,
*Lumped element-based, highly sub-wavelength, negative index metamaterials at UHF frequencies*, Journal Of Applied Physics, vol 104 no. 3 (2008) [abs]. - M. J. Taylor and M. A. Bailey and P. D. Pautet and S. A. Cummer and N. Jaugey and J. N. Thomas and N. N. Solorzano and F. S. Sabbas and R. H. Holzworth and O. Pinto and N. J. Schuch,
*Rare measurements of a sprite with halo event driven by a negative lightning discharge over Argentina*, Geophysical Research Letters, vol 35 no. 14 (2008) [abs]. - Y. Yuan and C. Bingham and T. Tyler and S. Palit and T. H. Hand and W. J. Padilla and D. R. Smith and N. M. Jokerst and S. A. Cummer,
*Dual-band planar electric metamaterial in the terahertz regime*, Optics Express, vol 16 no. 13 (2008), pp. 9746 -- 9752 [abs]. - B. I. Popa and S. A. Cummer,
*Compact dielectric particles as a building block for low-loss magnetic metamaterials*, Physical Review Letters, vol 100 no. 20 (2008) [abs]. - M. Rahm and D. Schurig and D. A. Roberts and S. A. Cummer and D. R. Smith and J. B. Pendry,
*Design of electromagnetic cloaks and concentrators using form-invariant coordinate transformations of Maxwell's equations*, Photonics And Nanostructures-fundamentals And Applications, vol 6 no. 1 (2008), pp. 87 -- 95 [abs]. - T. H. Hand and S. A. Cummer,
*Frequency tunable electromagnetic metamaterial using ferroelectric loaded split rings*, Journal Of Applied Physics, vol 103 no. 6 (2008) [abs]. - M. Rahm and S. A. Cummer and D. Schurig and J. B. Pendry and D. R. Smith,
*Optical design of reflectionless complex media by finite embedded coordinate transformations*, Physical Review Letters, vol 1 no. 6 (2008) [abs]. - R. Liu and Q. Cheng and T. Hand and J. J. Mock and T. J. Cui and S. A. Cummer and D. R. Smith,
*Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies*, Physical Review Letters, vol 1 no. 2 (2008) [abs]. - S. A. Cummer and B. I. Popa and D. Schurig and D. R. Smith and J. Pendry and M. Rahm and A. Starr,
*Scattering theory derivation of a 3D acoustic cloaking shell*, Physical Review Letters, vol 1 no. 2 (2008) [abs]. - C. L. Kuo and A. B. Chen and Y. J. Lee and L. Y. Tsai and R. K. Chou and R. R. Hsu and H. T. Su and L. C. Lee and S. A. Cummer and H. U. Frey and S. B. Mende and Y. Takahashi and H. Fukunishi,
*Modeling elves observed by FORMOSAT-2 satellite*, Journal Of Geophysical Research-space Physics, vol 112 no. A11 (2007) [abs]. - Cummer, Steven A. and Schurig, David,
*One path to acoustic cloaking*, New Journal of Physics, vol 9 (2007), pp. 45 - [045] [abs]. - Cummer, S.A. and Frey, H.U. and Mende, S.B. and Rue-Ron Hsu and Han-Tzong Su and Chen, A.B. and Fukunishi, H. and Takahashi, Y.,
*Simultaneous radio and satellite optical measurements of high-altitude sprite current and lightning continuing current*, J. Geophys. Res, A, Space Phys. (USA), vol 111 no. A10 (2006), pp. 6 pp. - [2006JA011809] [abs]. - Schurig, D. and Mock, J.J. and Justice, B.J. and Cummer, S.A. and Pendry, J.B. and Starr, A.F. and Smith, D.R.,
*Metamaterial electromagnetic cloak at microwave frequencies*, Science, vol 314 no. 5801 (2006), pp. 977 - 980 [science.1133628] [abs]. - Hu, Wenyi and Cummer, Steven A.,
*An FDTD model for low and high altitude lightning-generated EM fields*, IEEE Transactions on Antennas and Propagation, vol 54 no. 5 (2006), pp. 1513 - 1522 [TAP.2006.874336] [abs]. - Cummer, Steven A. and Popa, Bogdan-Ioan and Schurig, David and Smith, David R. and Pendry, John,
*Full-wave simulations of electromagnetic cloaking structures*, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, vol 74 no. 3 (2006), pp. 036621 - [PhysRevE.74.036621] [abs]. - Cummer, Steven A. and Jaugey, Nicolas and Li, Jingbo and Lyons, Walter A. and Nelson, Thomas E. and Gerken, Elizabeth A.,
*Submillisecond imaging of sprite development and structure*, Geophysical Research Letters, vol 33 no. 4 (2006), pp. 04104 - [2005GL024969] [abs]. - Popa, Bogdan-Ioan and Cummer, Steven A.,
*Direct measurement of evanescent wave enhancement inside passive metamaterials*, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, vol 73 no. 1 (2006), pp. 016617 - [PhysRevE.73.016617] [abs]. - Zhenggang Cheng and Cummer, S.A. and Baker, D.N. and Kanekal, S.G.,
*Nighttime D region electron density profiles and variabilities inferred from broadband measurements using VLF radio emissions from lightning*, J. Geophys. Res, A, Space Phys. (USA), vol 111 no. A5 (2006), pp. 9 pp. - [2005JA011308] [abs]. - Yuhu Zhai and Cummer, S.A.,
*An orthogonal projection and regularization technique for magnetospheric radio tomography*, J. Geophys. Res, A, Space Phys. (USA), vol 111 no. A3 (2006), pp. 11 pp. - [2005JA011039] [abs]. - Farrell, W.M. and Renno, N. and Delory, G.T. and Cummer, S.A. and Marshall, J.R.,
*Integration of electrostatic and fluid dynamics within a dust devil*, J. Geoph. Res., E, Planets (USA), vol 111 no. E1 (2006), pp. 10 pp. - [2005JE002527] [abs]. - Lyons, Walter A. and Cummer, Steven A.,
*Lightning characteristics of the aurora, NE record hailstone-producing supercell of 22-23 June 2003 during BAMEX*, 85th AMS Annual Meeting, American Meteorological Society - Combined Preprints (2005), pp. 5685 - 5690. - Collins, Leslie M. and Huettel, Lisa G. and Brown, April S. and Ybarra, Gary A. and Holmes, Joseph S. and Board, John A. and Cummer, Steven A. and Gustafson, Michael R. and Kim, Jungsang and Massoud, Hisham Z.,
*Theme-based redesign of the duke university ECE curriculum: The first steps*, ASEE Annual Conference and Exposition, Conference Proceedings (2005), pp. 14313 - 14326 [abs]. - Cheng, Zhenggang and Cummer, Steven A.,
*Broadband VLF measurements of lightning-induced ionospheric perturbations*, Geophysical Research Letters, vol 32 no. 8 (2005), pp. 08804 - [2004GL022187] [abs]. - Frey, H.U. and Mende, S.B. and Cummer, S.A. and Chen, A.B. and Hsu, R.-R. and Su, H.-T. and Chang, Y.-S. and Adachi, T. and Fukunishi, H. and Takahashi, Y.,
*Beta-type stepped leader of elve-producing lightning*, Geophysical Research Letters, vol 32 no. 13 (2005), pp. 13824 - [2005GL023080] [abs]. - Zhai, Yuhu and Cummer, Steven A.,
*A flexible and robust direct reconstruction method for magnetospheric radio tomography*, Radio Science, vol 40 no. 3 (2005), pp. 3004-3022 - [2004RS003100] [abs]. - Cummer, Steven A. and Zhai, Yuhu and Hu, Wenyi and Smith, David M. and Lopez, Liliana I. and Stanley, Mark A.,
*Measurements and implications of the relationship between lightning and terrestrial gamma ray flashes*, Geophysical Research Letters, vol 32 no. 8 (2005), pp. 08811 - [2005GL022778] [abs]. - Cummer, S.A. and Lyons, W.A.,
*Implications of lightning charge moment changes for sprite initiation*, J. Geophys. Res, A, Space Phys. (USA), vol 110 no. A4 (2005), pp. 9 pp. - [2004JA010812] [abs]. - Cummer, Steven A. and Lyons, Walter A.,
*Lightning charge moment changes in U.S. High Plains thunderstorms*, Geophysical Research Letters, vol 31 no. 5 (2004), pp. 05114 - 1 [2003GL019043] [abs]. - Cummer, Steven A.,
*Perfectly matched layer behavior in negative refractive index materials*, IEEE Antennas and Wireless Propagation Letters, vol 3 no. 1 (2004), pp. 172 - 175 [LAWP.2004.833710] [abs]. - Cummer, Steven A. and Popa, Bogdan-Loan,
*Wave fields measured inside a negative refractive index metamaterial*, Applied Physics Letters, vol 85 no. 20 (2004), pp. 4564 - 4566 [1.1823595] [abs]. - Antunovic, M. and Cummer, S.A.,
*Event driven adaptive filtering*, Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521), vol Vol.1 (2004), pp. 251 - 4 [MELCON.2004.1346821] [abs]. - Hu, Wenyi and Cummer, Steven A.,
*The nearly perfectly matched layer is a perfectly matched layer*, IEEE Antennas and Wireless Propagation Letters, vol 3 no. 1 (2004), pp. 137 - 140 [LAWP.2004.831077] [abs]. - Antunovic, M. and Cummer, S.A.,
*Adaptive filter for event-based signal extraction*, Automatika (Croatia), vol 45 no. 3-4 (2004), pp. 129 - 35 [abs]. - Antunovic, M. and Cummer, S.A.,
*Event driven adaptive filtering*, Proceedings of the Mediterranean Electrotechnical Conference - MELECON, vol 1 (2004), pp. 251 - 254 [abs]. - Farrell, W.M. and Delory, G.T. and Hillard, G.B. and Marshall, J.R. and Catling, D. and Hecht, M. and Tratt, D.M. and Renno, N. and Desch, M.D. and Cummer, S.A. and Houser, J.G. and Johnson, B.,
*Electric and magnetic signatures of dust devils from the 2000-2001 MATADOR desert tests*, J. Geophys. Res. (USA), vol 109 no. E3 (2004), pp. 13 pp. - [2003JE002088] [abs]. - Hu, Wenyi and Cummer, Steven A.,
*A new FDTD model for lightning generated EM wave simulation*, IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), vol 3 (2003), pp. 1061 - 1064 [APS.2003.1220094] [abs]. - Cummer, Steven A.,
*Simulated causal subwavelength focusing by a negative refractive index slab*, Applied Physics Letters, vol 82 no. 10 (2003), pp. 1503 - 1505 [1.1554778] [abs]. - Cummer, S.A. and Green, J.L. and Reinisch, B.W. and Fung, S.F. and Kaiser, M.L. and Pickett, J.S. and Christopher, I. and Mutel, R. and Gurnett, D.A. and Escoubet, C.P.,
*Advances in magnetospheric radio wave analysis and tomography*, Advances in Space Research, vol 32 no. 3 (2003), pp. 329 - 336 [S0273-1177(03)90271-7] [abs]. - Xu, Yanbin and Cummer, Steven A.,
*Applying the nonuniform FFT to the parabolic equation split-step algorithm for high frequency propagation modeling*, IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), vol 2 (2003), pp. 598 - 601 [APS.2003.1219308] [abs]. - Farrell, William M. and Delory, Greg T. and Cummer, Steven A. and Marshall, John R.,
*A simple electrodynamic model of a dust devil*, Geophysical Research Letters, vol 30 no. 20 (2003), pp. 2 - 1 [2003GL017606] [abs]. - Lyons, Walter A. and Nelson, Thomas E. and Williams, Earle R. and Cummer, Steven A. and Stanley, Mark A.,
*Characteristics of sprite-producing positive cloud-to-ground lightning during the 19 July 2000 STEPS mesoscale convective systems*, Monthly Weather Review, vol 131 no. 10 (2003), pp. 2417 - 2427 [2.0.CO;2" >1520-0493(2003)131<2417:COSPCL>2.0.CO;2] [abs]. - Cummer, Steven A.,
*A simple, nearly perfectly matched layer for general electromagnetic media*, IEEE Microwave and Wireless Components Letters, vol 13 no. 3 (2003), pp. 128 - 130 [LMWC.2003.810124] [abs]. - Cummer, S.A.,
*Current moment in sprite-producing lightning*, J. Atmos. Sol.-Terr. Phys. (UK), vol 65 no. 5 (2003), pp. 499 - 508 [S1364-6826(02)00318-8] [abs]. - Hu, Wenyi and Cummer, Steven A.,
*Lightning charge moment changes for the initiation of sprites*, Geophysical Research Letters, vol 29 no. 8 (2002), pp. 120 - 1 [abs]. - Ostgaard, N. and Stadsnes, J. and Bjordal, J. and Germany, G.A. and Vondrak, R.R. and Parks, G.K. and Cummer, S.A. and Chenette, D.L. and Pronko, J.G.,
*Auroral electron distributions derived from combined UV and X-ray emissions*, J. Geophys. Res. (USA), vol 106 no. A11 (2001), pp. 26081 - 9 [2001JA000031] [abs]. - Cummer, Steven A. and Fuellekrug, Martin,
*Unusually intense continuing current in lightning produces delayed mesospheric breakdown*, Geophysical Research Letters, vol 28 no. 3 (2001), pp. 495 - 498 [2000GL012214] [abs]. - Cummer, S.A. and Reiner, M.J. and Reinisch, B.W. and Kaiser, M.L. and Green, J.L. and Benson, R.F. and Manning, R. and Goetz, K.,
*A test magnetospheric radio tomographic imaging with IMAGE and WIND*, Geophysical Research Letters, vol 28 no. 6 (2001), pp. 1131 - 1134 [2000GL012683] [abs]. - Cummer, S.A. and Vondrak, R.R. and Ostgaard, N. and Stadsnes, J. and Bjordal, J. and Chenette, D.L. and Brittnacher, M.J. and Parks, G.K. and Sigwarth, J.B. and Frank, L.A.,
*Global multispectral auroral imaging of an isolated substorm*, Geophysical Research Letters, vol 27 no. 5 (2000), pp. 637 - 640 [1999GL003678] [abs]. - Stanley, Mark and Brook, Marx and Krehbiel, Paul and Cummer, Steven A.,
*Detection of daytime sprites via a unique sprite ELF signature*, Geophysical Research Letters, vol 27 no. 6 (2000), pp. 871 - 874 [1999GL010769] [abs]. - Cummer, Steven A.,
*Modeling electromagnetic propagation in the Earth-ionosphere waveguide*, IEEE Transactions on Antennas and Propagation, vol 48 no. 9 (2000), pp. 1420 - 1429 [8.898776] [abs]. - Cummer, Steven A. and Inan, Umran S.,
*Ionospheric E region remote sensing with ELF radio atmospherics*, Radio Science, vol 35 no. 6 (2000), pp. 1437 - 1444 [2000RS002335] [abs]. - Ostgaard, N. and Stadsnes, J. and Bjordal, J. and Vondrak, R.R. and Cummer, S.A. and Chenette, D.L. and Schulz, M. and Parks, G.K. and Brittnacher, M.J. and McKenzie, D.L. and Pronko, J.G.,
*Global X-ray emission during an isolated substorm - a case study*, J. Atmos. Sol.-Terr. Phys. (UK), vol 62 no. 10 (2000), pp. 889 - 900 [S1364-6826(00)00034-1] [abs]. - Cummer, Steven A. and Stanley, Mark,
*Submillisecond resolution lightning currents and sprite development: Observations and implications*, Geophysical Research Letters, vol 26 no. 20 (1999), pp. 3205 - 3208 [1999GL003635] [abs]. - Barrington-Leigh, C.P. and Inan, U.S. and Stanley, M. and Cummer, S.A.,
*Sprites triggered by negative lightning discharges*, Geophysical Research Letters, vol 26 no. 24 (1999), pp. 3605 - 3608 [1999GL010692] [abs]. - Cummer, S.A. and Farrell, W.M.,
*Radio atmospheric propagation on Mars and potential remote sensing applications*, J. Geophys. Res. (USA), vol 104 no. E6 (1999), pp. 14149 - 57 [1998JE000622] [abs]. - Ostgaard, N. and Stadsnes, J. and Bjordal, J. and Vondrak, R.R. and Cummer, S.A. and Chenette, D.L. and Parks, G.K. and Brittnacher, M.J. and McKenzie, D.L.,
*Global-scale electron precipitation features seen in UV and X rays during substorms*, J. Geophys. Res. (USA), vol 104 no. A5 (1999), pp. 10191 - 204 [1999JA900004] [abs]. - Farrell, W.M. and Kaiser, M.L. and Desch, M.D. and Houser, J.G. and Cummer, S.A. and Wilt, D.M. and Landis, G.A.,
*Detecting electrical activity from Martian dust storms*, J. Geophys. Res. (USA), vol 104 no. E2 (1999), pp. 3795 - 801 [98JE02821] [abs]. - Cummer, S.A. and Inan, U.S. and Bell, T.F. and Barrington-Leigh, C.P.,
*ELF radiation produced by electrical currents in sprites*, Geophysical Research Letters, vol 25 no. 8 (1998), pp. 1281 - 1284 [98GL50937] [abs]. - Cummer, S.A. and Inan, U.S. and Bell, T.F.,
*Ionospheric D region remote sensing using VLF radio atmospherics*, Radio Science, vol 33 no. 6 (1998), pp. 1781 - 1792 [98RS02381] [abs]. - Cummer, S.A. and Inan, U.S.,
*Measurement of charge transfer in sprite-producing lightning using ELF radio atmospherics*, Geophysical Research Letters, vol 24 no. 14 (1997), pp. 1731 - 1734 [97GL51791] [abs]. - Kelley, M.C. and Baker, S.D. and Holzworth, R.H. and Argo, P. and Cummer, S.A.,
*LF and MF observations of the lightning electromagnetic pulse at ionospheric altitudes*, Geophysical Research Letters, vol 24 no. 9 (1997), pp. 1111 - 1114 [97GL00991] [abs]. - Cummer, Steven A.,
*Analysis of new and existing FDTD methods for isotropic cold plasma and a method for improving their accuracy*, IEEE Transactions on Antennas and Propagation, vol 45 no. 3 (1997), pp. 392 - 400 [8.558654] [abs]. - Cummer, S.A. and Bell, T.F. and Inan, U.S. and Chenette, D.L.,
*VLF remote sensing of high-energy auroral particle precipitation*, J. Geophys. Res. (USA), vol 102 no. A4 (1997), pp. 7477 - 84 [96JA03721] [abs]. - Cummer, S.A. and Bell, T.F. and Inan, U.S. and Zanetti, L.J.,
*VLF remote sensing of the auroral electrojet*, J. Geophys. Res. (USA), vol 101 no. A3 (1996), pp. 5381 - 9 [95JA03409] [abs]. - Bell, T.F. and Inan, U.S. and Danielson, M.T. and Cummer, S.A.,
*VLF signatures of ionospheric heating by HIPAS*, Radio Science, vol 30 no. 6 (1995), pp. 1855 - 1867 [95RS02191] [abs]. - Cummer, Steven A.,
*Another new FDTD method for linear dispersive media - but this one's the best yet*, IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), vol 1 (1995), pp. 208 - 211 [APS.1995.529997] [abs]. - Ostgaard, N. and Stadsnes, J. and Bjordal, J. and Vondrak, R.R. and Cummer, S.A. and Chenette, D.L. and Schulz, M. and Pronko, J.G.,
*Cause of the localized maximum of X-ray emission in the morning sector: a comparison with electron measurements*, J. Geophys. Res. (USA), vol 105 no. A9 (1), pp. 20869 - 83 [1999JA000354] [abs].