Tricontrollable pixelated metasurface for stopband for terahertz radiation

Abstract

Transmission of a normally incident plane wave through a pixelated metasurface with meta-atoms made up of graphene-patched and InSb-patched pixels on a silicon substrate was simulated using CST Microwave Studio^TM2019 software. This metasurface is electrically controllable due to the graphene-patched pixels, and it is magnetically as well as thermally controllable due to the InSb-patched pixels. A tricontrollable stopband with minimum transmittance as low as 0.05 can be achieved for operation in the terahertz gap.

Keywords:

• Controllability
• graphene
• indium antimonide
• meta-atom
• metasurface
• multicontrollability
• terahertz

Acknowledgements

AL is grateful to the Charles Godfrey Binder Endowment for ongoing support of his research.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Pankaj Kumar

Pankaj Kumar received the B.Tech. degree in electronics and communication engineering from Ujjain Engineering College, Ujjain, India in 2011 and the M.Tech degree from PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur, India in 2014. He is currently pursuing the Ph.D. degree in electronics and communication engineering with the Department of Electronics and Communication Engineering, National Institute of Technology Patna, Bihar, India. He is interested in metasurfaces for terahertz applications.

Akhlesh Lakhtakia

Akhlesh Lakhtakia is the Evan Pugh University professor and Charles Godfrey Binder professor of engineering science and mechanics at Pennsylvania State University. His current research interests include nanophotonics, surface multiplasmonics, solar cells, sculptured thin films, mimumes, bioreplication, and forensic science. He has been elected a fellow of OSA, SPIE, AAAS, APS, IEEE, IoP, RSC, and RSA. He received the 2010 SPIE Technical Achievement Award and the 2016 Walston Chubb Award for Innovation.

Pradip Kumar Jain

Pradip Kumar Jain received B.Tech., M.Tech., and Ph.D. degrees from the Indian Institute of Technology (BHU), Varanasi, India, in 1979, 1981, and 1988, respectively. He became a full professor of electronics engineering at the same institution in 2001. He is currently the Director of the National Institute of Technology Patna, Patna, India. A fellow of the Institution of Electronics and Telecommunication Engineers, India, he is interested in microwave/millimeter-wave devices and circuits, and high-power microwave electron-beam devices.