Optically variable devices (OVDs) are in tremendous demand as optical indicators against
the increasing threat of counterfeiting. Conventional OVDs are exposed to the danger of …

Metamaterial is a kind of material/structure that is artificially designed and has exceptional
electromagnetic properties and/or other physical properties, not found in nature. A class of …

Metasurfaces have opened the door to next-generation optical devices due to their ability to
dramatically modulate electromagnetic waves at will using periodically arranged …

Metasurfaces, with extremely exotic capabilities to manipulate electromagnetic (EM) waves,
have derived a plethora of advanced metadevices with intriguing functionalities …

Dimensional design and heterogeneous interface engineering are promising approaches
for the fabrication of superior absorbers with high loss performance and a wide effective …

Gradient metasurface provides a new way for controlling electromagnetic wave, and vortex
beam can be widely used to improve the performance of wireless communication. Here …

Microwave absorbing metasurfaces with optical transparency are essentially useful in
electromagnetic compatibility, stealth, or camouflage while kee** continuous optical …

The recent development of metasurfaces offers a unique technique for the arbitrary control of
electromagnetic waves by spatially manipulating their amplitudes and phases. However …

Although the development of graphene broadband terahertz (THz) absorbers is relatively
mature, studies focusing on modulating the absorption window remain limited. Existing …

Dynamically controlling terahertz (THz) waves with an ultracompact device is highly desired,
but previously realized tunable devices are bulky in size and/or exhibit limited light-tuning …