Metasurface

Tactile Augmentation of Material Classification via Imperceptible On‑Skin Triboelectricity CollectionHarnessing intrinsic triboelectric signals from human skin holds promise for enhancing tactile perception. However, collecting these signals without disrupting normal skin functions and convoluting motion artifacts remains challenging. Additionally,…

Electrically Tunable Fano Resonances in Liquid Crystal-based Dynamic Metasurface at Telecommunication WavelengthsDielectric metasurface has become a versatile platform for light manipulation. Due to its subwavelength feature size, the metasurface can induce optical resonances with tailored characteristics, such as Fano resonance with asymmetric lin…

CPDS Researchers Develop Fast-Speed Electrically Tunable Metasurface for Full 2π Phase ModulationA groundbreaking study from the Centre for Photonic Devices and Sensors (CPDS) at the University of Cambridge, led by Wenhan Zhang, Dr. Mike Pivnenko, and Professor Daping Chu, introduces a fast-speed electrically tunable liquid crystal (LC) metasurface…

Electrically Tunable MetasurfaceMembers of the CPDS group have recently co-authored a paper on a liquid crystal based dynamically tunable metasurface for amplitude modulation.The metasurface consists of coupled subwavelength grating fingers, which provide alignment for the liquid crystal without the need for an additional alignment material or proc…

Electrically Tunable Metasurface in TN LC Configuration with Enhanced Quality Factor and Metaatom-Induced AlignmentDynamic metasurface with subwavelength dimensions has emerged as a key optical technology in recent years. Although various active tuning mechanisms are being proposed, liquid crystal-based dynamic metasurface remains attractive due to…

Revolutionising Dynamic Optical ControlIn the rapidly evolving field of optical engineering, the integration of metasurfaces with dynamic control elements remains a pivotal challenge. Wenhan Zhang, a researcher from the CPDS group, has fabricated a liquid-crystal Huygens metasurface, leading to an unprecedented level of phase modulation in these st…

Fast-Switching Reconfigurable Metadevice with Metasurface-Induced Liquid Crystal Alignment for Light Modulator ApplicationsMetasurface technology is progressing rapidly towards commercialization and productization, due to its unparallelled advantages over conventional optical solutions. The reconfigurable metasurface, exhibiting more flexibility an…

Dielectric Meta-Atoms with Liquid Crystal Alignment Effect for Electrically Tunable MetasurfaceDielectric metasurfaces with tunable functions are increasingly appealing to both the academia and industrial communities. Among the many tuning mechanisms reported so far, metasurface immersed in liquid crystal (LC) stands out as one of the most viable a…

Increasing Steering Angle of LCoS in a WSS System Through Integration with a MetasurfaceLiquid crystal on silicon (LCoS) has been the dominant choice for wavelength selective switches (WSSs) in telecommunication industry due to its high spatial resolution and compatibility with software defined flexible grid feature. Current LCoS devices generally …

Phase Shift of Liquid Crystal-Induced Resonance Tuning in Dielectric Metasurface at Telecommunication WavelengthDuring the last decade, active metasurface has attracted significant attention from academia and industry because of its unparalleled advantages over conventional technologies. Active metasurface using electrically controlled liquid cryst…