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ABOUT
Wenshan Cai
Professor, School of Electrical and Computer Engineering
Joint Appointment with: 
ECE
404-894-8911
404-894-0560
Pettit MiRC Bldg., Rm 213

Dr. Wenshan Cai is a full professor in the School of Electrical and Computer Engineering, with a joint appointment in Materials Science and Engineering. Prior to joining Georgia Tech in 2012, he was a postdoctoral fellow at Stanford University. He received his B.S. and M.S. from Tsinghua University in 2000 and 2002, respectively, and his Ph.D. from Purdue University in 2008. His research is focused on nanophotonic materials and devices, in which he has made major impacts on the evolving field of plasmonics and metamaterials. His current research interests encompass optical metamaterials & metasurfaces, plasmonic nanodevices, photonic design with artificial intelligence, optical imaging, nonlinear optics, ultrafast phenomena, integrated photonics, and photovoltaics.

Cai has published ~70 journal articles, which in total have been cited ~20,000 times. He authored the book, Optical Metamaterials: Fundamentals and Applications, which is used as a textbook or a major reference around the world. He is the recipient of several distinctions, including the OSA/SPIE Joseph W. Goodman Book Writing Award and the Office of Naval Research Young Investigator Award. 

Research Areas: 
PUBLICATIONS & PATENTS
Selected publications: 

Wenshan Cai and V. M. Shalaev, Optical Metamaterials: Fundamentals and Applications, ISBN: 978-1-4419-1150-6, Springer, New York, 2010.

S. Lan, L. Kang, D. T. Schoen, S. P. Rodrigues, Y. Cui, M. L. Brongersma, and Wenshan Cai, “Backward phase-matching for nonlinear optical generation in negative-index materials,” Nature Materials, Vol. 14, No. 8, 807-811 (2015).

L. Kang, S. Lan, Y. Cui, S. P. Rodrigues, Y. Liu, D. H. Werner, and Wenshan Cai, “An active metamaterial platform for chiral responsive optoelectronics,” Advanced Materials, Vol. 27, No. 29, 4377–4383 (2015).

S. P. Rodrigues and Wenshan Cai, “Nonlinear optics: Tuning harmonics with excitons,” Nature Nanotechnology, Vol. 10, No. 5, 387-388 (2015).

S. P. Rodrigues, Y. Cui, S. Lan, L. Kang, and Wenshan Cai, “Metamaterials enable chiral-selective enhancement of two-photon luminescence from quantum emitters,” Advanced Materials, Vol. 27, No. 6, 1124-1130 (2015).

L. Kang, Y. Cui, S. Lan, S. P. Rodrigues, M. L. Brongersma, and Wenshan Cai, “Electrifying photonic metamaterials for tunable nonlinear optics,” Nature Communications, Vol. 5, 4680 (2014).

S. P. Rodrigues, S. Lan, L. Kang, Y. Cui, and Wenshan Cai, “Nonlinear imaging and spectroscopy of chiral metamaterials,” Advanced Materials, Vol. 26, No. 35, 6157-6162 (2014).

Y. Cui, L. Kang, S. Lan, S. P. Rodrigues, and Wenshan Cai, “Giant chiral optical response from a twisted-arc metamaterial,” Nano Letters, Vol. 14, No. 2, 1021-1025 (2014).

W. Shin, Wenshan Cai, P. B. Catrysse , G. Veronis , M. L. Brongersma , and S. Fan, “Broadband sharp 90-degree bends and T-splitters in plasmonic coaxial waveguides,” Nano Letters, Vol. 13, No. 10, 4753-4758 (2013).

Wenshan Cai, “Viewpoint: Metal-coated waveguide stretches wavelengths to infinity (invited),” Physics, Vol. 6, No. 1, DOI: 10.1103/Physics.6.1 (2013).

F. Afshinmanesh, J. S. White, Wenshan Cai, and M. L. Brongersma, “Measurement of the polarization state of light using an integrated plasmonic polarimeter,” Nanophotonics, Vol. 1, No. 2, 125-129 (2012).

E. C. Garnett, Wenshan Cai, J. J. Cha, F. Mahmood, S. T. Connor, M. G. Christoforo, Y. Cui, M. D. McGehee, and M. L. Brongersma, “Self-limited plasmonic welding of silver nanowire junctions,” Nature Materials, Vol. 11, No. 3, 241-249 (2012).

Wenshan Cai, Y. C. Jun, and M. L. Brongersma, “Electrical control of plasmonic nanodevices,” SPIE Newsroom, DOI: 10.1117/2.1201112.004060 (2012).

J. S. Q. Liu, R. A. Pala, F. Afshinmanesh, Wenshan Cai, and M. L. Brongersma, “A submicron plasmonic dichroic splitter,” Nature Communications, Vol. 2, 525 (2011).

Wenshan Cai, A. P. Vasudev, and M. L. Brongersma, “Electrically controlled nonlinear generation of light with plasmonics,” Science, Vol. 333, No. 6050, 1720-1723 (2011).

Wenshan Cai and V. M. Shalaev, “Into the visible,” Physics World, Vol. 24, No. 7, 30-34 (2011).

I-K. Ding, J. Zhu, Wenshan Cai, S.-J. Moon, N. Cai, P. Wang, S. M. Zakeeruddin, M. Grätzel, M. L. Brongersma, Y. Cui, and M. D. McGehee, “Plasmonic dye-sensitized solar cells,” Advanced Energy Materials, Vol. 1, No. 1, 52-57 (2011).

Wenshan Cai, W. Shin, S. Fan, and M. L. Brongersma, “Elements for plasmonic nanocircuits with three-dimensional slot waveguides,” Advanced Materials, Vol. 22, No. 45, 5120-5124 (2010).

Wenshan Cai and M. L. Brongersma, “Plasmonics gets transformed,” Nature Nanotechnology, Vol. 5, No. 7, 485-486 (2010).

R. D. Kekatpure, E. S. Barnard, Wenshan Cai, and M. L. Brongersma, “Phase-coupled plasmon-induced transparency,” Physical Review Letters, Vol. 104, 243902 (2010).

J. A. Schuller, E. S. Barnard, Wenshan Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, “Plasmonics for extreme light concentration and manipulation,” Nature Materials, Vol. 9, No. 3, 193-204 (2010).

L. Cao, P. Fan, A. P. Vasudev, J. S. White, Z. Yu, Wenshan Cai, J. A. Schuller, S. Fan, and M. L. Brongersma, “Semiconductor nanowire optical antenna solar absorbers,” Nano Letters, Vol. 10, No. 2, 439-445 (2010).

Wenshan Cai, J. S. White, M. L. Brongersma, “Compact, high-speed and power-efficient electrooptic plasmonic modulators,” Nano Letters, Vol. 9, No. 12, 4403-4411 (2009).

A. V. Kildishev, Wenshan Cai, U. K. Chettiar, and V. M. Shalaev, “Transformation optics: approaching broadband electromagnetic cloaking,” New Journal of Physics, Vol. 10, 115029 (2008).

U. K. Chettiar, S. Xiao, A. V. Kildishev, Wenshan Cai, H.-K. Yuan, V. P. Drachev, and V. M. Shalaev, “Optical metamagnetism and negative-index metamaterials,” MRS Bulletin, Vol. 33, No. 10, 921-926 (2008).

Wenshan Cai, U. K. Chettiar, A. V. Kildishev, and V. M. Shalaev, “Designs for optical cloaking with high-order transformations,” Optics Express, Vol. 16, No. 8, 5444-5452 (2008).

V. P. Drachev, U. K. Chettiar, A. V. Kildishev, H.-K. Yuan, Wenshan Cai, and V. M. Shalaev, “The Ag dielectric function in plasmonic metamaterials,” Optics Express, Vol. 16, No. 2, 1186-1195 (2008).

Wenshan Cai, U. K. Chettiar, A. V. Kildishev, V. M. Shalaev, and G. M. Milton, “Nonmagnetic cloak with minimized scattering,” Applied Physics Letters, Vol. 91, 111105 (2007).

U. K. Chettiar, A. V. Kildishev, H.-K. Yuan, Wenshan Cai, S. Xiao, V. P. Drachev, and V. M. Shalaev, “Dual-band negative index metamaterial: double-negative at 813 nm and single-negative at 772 nm,” Optics Letters, Vol. 32, No. 12, 1671-1673 (2007).

Wenshan Cai, U. K. Chettiar, A. V. Kildishev, and V. M. Shalaev, “Optical cloaking with metamaterials,” Nature Photonics, Vol. 1, No. 4, 224-227 (2007).

Wenshan Cai, U. K. Chettiar, H.-K. Yuan, V. C. de Silva, A. V. Kildishev, V. P. Drachev, and V. M. Shalaev, “Metamagnetics with rainbow colors,” Optics Express, Vol. 15, No. 6, 3333-3341 (2007).

H.-K. Yuan, U. K. Chettiar, Wenshan Cai, A. V. Kildishev, A. Boltasseva, V. P. Drachev, and V. M. Shalaev, “A negative permeability material at red light,” Optics Express, Vol. 15, No. 3, 1076-1083 (2007).

A. V. Kildishev, Wenshan Cai, U. K. Chettiar, H.-K. Yuan, A. K. Sarychev, V. P. Drachev, and V. M. Shalaev, “Negative refractive index in optics of metal-dielectric composites,” Journal of the Optical Society of America B, Vol. 23, No. 3, 423-433 (2006).

V. P. Drachev, Wenshan Cai, U. K. Chettiar, H.-K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck, and V. M. Shalaev, “Experimental verification of an optical negative-index material,” Laser Physics Letters, Vol. 3, No. 1, 49-55 (2006).

Wenshan Cai, D. A. Genov and V. M. Shalaev, “Superlens based on metal-dielectric composites,” Physical Review B, Vol. 72, 193101 (2005).

 

V. M. Shalaev, Wenshan Cai, U. K. Chettiar, H.-K. Yuan, A. K. Sarychev, V. P. Drachev, and A. V. Kildishev, “Negative index of refraction in optical metamaterials,” Optics Letters, Vol. 30, No. 24, 3356-3358 (2005).