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Terahertz is part of the electromagnetic spectrum ranging from 0.1 – 10 THz which holds the potential for numerous futuristic applications including 6G communications, fingerprint sensing, defect identification, security screening and biological imaging. However, efficient interaction and dynamic control of terahertz waves is notoriously challenging owing to its higher frequency and lower photon energy. Hence, radically novel platforms with integrated reconfigurable solutions are critical to bridge the technological gap of the terahertz spectrum. 

Bimaterial Microcantilever Platform for Reconfigurable Terahertz Metasurfaces

• The advent of electromagnetic metasurface has opened a novel pathway to achieve unprecedented manipulation of electromagnetic waves. The spectral scalability of electromagnetic metasurface concept makes it extremely attractive for exploring terahertz wave control. The team focuses on developing microelectromechanical systems (MEMS) integrated terahertz metasurfaces. Bimaterial cantilevers are used as active element for the experimental demonstration of various terahertz devices including spectral filters, polarizers, perfect absorbers and dynamic beam steerers. The devices are fabricated on 12” CMOS compatibility in-house foundry with the potential to scale to nanometric dimensions.  

The adoption of MEMS as an active element for reconfigurable metasurface provides four critical advantages – (i) unmatched reconfigurability, (ii) extremely low energy consumption, (ii) functional versatility and (iv) potential for large-scale manufacturability. Hence, making them highly attractive for the next generation of 6G communications devices. 

Terametrix TRAY 5000 Terahertz Time Domain Spectrometer

TRAY 5000 terahertz time domain spectrometer offers bandwidth of up to 3 THz with scan length of 700 ps and measurement rate of 1 KHz. This system is ideal for thickness measurement of multilayer coating in µm level resolution, defect inspection in plastics and water content in biosamples.