Random suspension of noble-metal nanoparticles (spherical nanoantennae) have been used as colorants since antiquity. Variously shaped and well-positioned nanoscale resonator arrays fabricated with conventional nanofabrication techniques allow unprecedented precision manipulation of light flow and light matter interaction. In this talk, the design of individual nanoantennae and nanoantenna arrays (metasurfaces) are explored in connection with spectral filtering. I will also talk about the interesting new development of all-dielectric (Silicon nanoantennae on glass) metasurfaces that are fully CMOS manufacturing compatible and may find applications in on chip cameras and spectrometers.
Dr. Ravi Sadananda Hegde is a faculty member with the electrical engineering department at IIT Gandhinagar since July 2015. His current interests include the physics, modeling and device applications of photonic nanostructures. Prior to IITGn, he was a research scientist with the electronics and photonics division at the A*STAR Institute of High Performance Computing in Singapore since 2009. Ravi holds a Doctor of Philosophy in Electrical Engineering from the University of Michigan at Ann Arbor, USA, and the Master of Science in Electrical Engineering (specialization in photonics technology) from the University of Southern California, USA