Dr. Cai is an Associate Professor in Materials Science and Engineering, with a joint appointment in Electrical and Computer Engineering. Prior to joining Georgia Tech in January 2012, he was a postdoctoral fellow in the Geballe Laboratory for Advanced Materials at Stanford University. His scientific research is in the area of nanophotonic materials and devices, in which he has made a major impact on the evolving field of plasmonics and metamaterials.

Dr. Cai has published more than 40 papers in peer-reviewed journals, and the total citations of his recent papers have reached over 6,000 within the past ten years. He authored the book Optical Metamaterials: Fundamentals and Applications, a text used at many universities around the world, for which he won the 2014 Joseph W. Goodman Book Writing Award from OSA and SPIE. Dr. Cai received his B.S. and M.S. degrees from Tsinghua University in 2000 and 2002, respectively, and his Ph.D. from Purdue University in 2008, all in electrical/electronic engineering.

Research Areas:
Education:

Ph.D., Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 2008
M.S., Electronic Engineering, Tsinghua University, Beijing, China, 2002
B.S., Electronic Engineering, Tsinghua University, Beijing, China, 2000

Research Keywords:
photonics,nanophotonics,metamaterials,two-dimensional materials,nanofabrication,optical materials,nanoelectronics,plasmonics,optoelectronics,nonlinear optics

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).