Unlocking the Potential of Terahertz Metamaterials: A Seminar with Prof. Dibakar Roy Chowdhury

The Department of Physics at the School of Natural Sciences is delighted to invite you to an enriching seminar scheduled for Monday, April 29th, 2024, from 12 PM to 1 PM (IST) at venue D-217. Esteemed speaker, Prof. Dibakar Roy Chowdhury, a distinguished Professor from Mahindra University, Hyderabad, will present on the captivating topic: "Terahertz Metamaterials: The Next Photonic Revolution."

Terahertz (THz) frequencies, spanning from 0.1 THz to 10 THz, hold immense promise in shaping the sixth generation (6G) technologies, driving advancements in high-speed communication, imaging, and nondestructive biosensing. Prior to the emergence of metamaterials, the utilization of THz frequencies faced limitations due to the lack of naturally responsive materials. However, metamaterials, engineered photonic structures, have transformed this landscape by providing unprecedented electromagnetic control.

In this seminar, Prof. Dibakar Roy Chowdhury will provide an insightful overview of metamaterials and their recent advancements, elucidating their pivotal role in upcoming national missions such as quantum and 6G initiatives. The discussion will encompass the myriad applications of metamaterials in the terahertz domain, poised to significantly enhance these missions.

Moreover, Prof. Roy Chowdhury will showcase recent breakthroughs from his research group, including the demonstration of transverse magnetism in one-dimensional plasmonic wires, previously deemed unattainable. These achievements hold promise for the development of compact photonic or electrical integrated circuits (ICs) and futuristic applications like artificial magnetism, cloaking, and magnetic storage. Additionally, the presentation will highlight magnetically reconfigurable metamaterials with Ni/Al superlattice configurations, offering switchable optoelectronic properties vital for realizing low-power THz metadevices, addressing urgent technological needs.

Join us for an illuminating session as we delve into the transformative potential of terahertz metamaterials, shaping the future of photonics and beyond.

Abstract:

The Terahertz (THz) frequencies, ranging from 0.1 THz to 10 THz, are indispensable in sixth generation (6G) technologies, powering advancements in high-speed communication, imaging, and nondestructive biosensing. Until the emergence of metamaterials, the versatility of THz applications was hampered by the absence of naturally responsive materials. Metamaterials, engineered photonic structures, have revolutionized this landscape by offering unparalleled electromagnetic control. Metamaterial paves the way for next-generation photonic devices with immense potential to revolutionize multiple aspects of human life. I will kick off this discussion with an overview of metamaterials and their recent strides. I will also discuss their promising role in upcoming national missions like quantum and 6G initiatives. Given the myriad applications in the terahertz domain, metamaterials stand poised to significantly bolster these missions. Furthermore, I will highlight some recent demonstrations (experimental and theoretical) from my group, including the demonstration of transverse magnetism in one-dimensional plasmonic wires, a feat previously thought unattainable. Our demonstrated scheme holds potential for developing compact photonic or electrical integrated circuits (ICs), as well as futuristic applications like artificial magnetism, cloaking, and magnetic storage. We have also showcased magnetically reconfigurable metamaterials with Ni/Al superlattice configurations, offering switchable optoelectronic properties crucial for realizing low-power THz metadevices, addressing urgent needs.