S. Anantha Ramakrishna

Ph.D. (Raman Research Institute, Bangalore / JNU Delhi, 2001) PROFESSOR

Dr. S. Anantha Ramakrishna joined the department in 2003, and has broad interests in Optics and Condensed Matter Physics. During the past decade, he has been concentrating on metamaterials and plasmonic properties of metallic structures. He directs an active group of researchers carrying both theoretical and experimental work on metamaterials and plasmonic materials at visible to infra-red frequencies.

Selected recent publications:

  1. S.A. Ramakrishna, P. Mandal, K. Jeyadheepan, N. Shukla, M. Kadic, S. Guenneau and S. Enoch, "Plasmonic interaction of visible light with gold nano-checkerboards", Phys. Rev. B, 84, 245424 (2011)

  2. P. Mandal and S.A. Ramakrishna, "Dependence of surface enhanced Raman scattering on the plasmonic template periodicity", Opt. Lett. 36, 3705-3707 (2011)

  3. M. Kadic, S. Guenneau, S.Enoch and S.A. Ramakrishna, "Plasmonic Space Folding: Focusing Surface Plasmons via Negative Refraction in Complementary Media", ACS Nano 5, 6819-6825 (2011)

  4. L. Nanda, H. Wanare and S.A. Ramakrishna "Why do superluminal pulses become subluminal once they go far enough?", Phys. Rev. A 79, 041806 (2009).

  5. S. Chakrabarti, S.A. Ramakrishna and H. Wanare, "Coherently controlling metamaterials", Opt. Express, 16, 19505-19511 (2008)

  6. S. Guenneau, A. Movchan, G. Petursson and S.A. Ramakrishna, "Acoustic meta-materials for sound focussing and confinement", New J. Phys. 9, 399 (2007)


  1. S. A. Ramakrishna and T.M. Grzegorczyk, "Physics and Applications of negative refractive index materials", 421 pages, CRC Press, Boca Raton (2009). Also co-published by SPIE Press, Bellingham.