Metamaterial perfect absorbers at infra-red frequencies

by Prof. S.A. Ramakrishna (Indian Institute of Technology, Kanpur)

Friday 6 Dec 2013, 11:00 → 12:00 Asia/Kolkata

AG69 (Colaba Campus)

Structured composite materials, known as Metamaterials, have become popular for their novel properties such as negative refractive index that are not naturally available. Here we discuss the design, microfabrication and properties of impedance matched metamaterials that have perfect absorption via electromagnetic resonances at a desired frequency. Measurements of multi-band absorption from dipole and multipole resonances over the infra-red spectrum will be presented. Controllable, active metamaterial absorbers and their applications will also be discussed.