Terahertz tunable vanadium dioxide metasurface for dynamic illusion and cloaking
Ling Wang,
Feng Gao,
Shuhua Teng,
Zhiguo Tan,
Xing Zhang,
Jun Lou
Affiliations
Ling Wang
School of Electronic Information, Hunan First Normal University, Changsha, Hunan 410205, China; Key Laboratory of Hunan Province for 3D Scene Visualization and Intelligence Education, Hunan First Normal University, Changsha, Hunan 410205, China
Feng Gao
School of Electronic Information, Hunan First Normal University, Changsha, Hunan 410205, China; Key Laboratory of Hunan Province for 3D Scene Visualization and Intelligence Education, Hunan First Normal University, Changsha, Hunan 410205, China; Corresponding author
Shuhua Teng
School of Electronic Information, Hunan First Normal University, Changsha, Hunan 410205, China; Key Laboratory of Hunan Province for 3D Scene Visualization and Intelligence Education, Hunan First Normal University, Changsha, Hunan 410205, China
Zhiguo Tan
School of Electronic Information, Hunan First Normal University, Changsha, Hunan 410205, China; Key Laboratory of Hunan Province for 3D Scene Visualization and Intelligence Education, Hunan First Normal University, Changsha, Hunan 410205, China
Xing Zhang
School of Electronic Information, Hunan First Normal University, Changsha, Hunan 410205, China; Key Laboratory of Hunan Province for 3D Scene Visualization and Intelligence Education, Hunan First Normal University, Changsha, Hunan 410205, China
Jun Lou
School of Electronic Information, Hunan First Normal University, Changsha, Hunan 410205, China; Key Laboratory of Hunan Province for 3D Scene Visualization and Intelligence Education, Hunan First Normal University, Changsha, Hunan 410205, China
Summary: Realizing camouflage by illusion and cloaking based on the metasurface has received widespread attention recently. However, existing metasurface-based illusion and cloaking devices are valid for the incident wave with a specific frequency, angle, or polarization, or exhibit a single function. Therefore, a terahertz tunable vanadium dioxide (VO2) metasurface carpet cloak is proposed for dynamic illusion and cloaking. Simulation results show that by controlling the state of the VO2, the metasurface carpet cloak can simultaneously achieve illusion and cloaking functions, working at 0.45 THz and 0.6 THz, and is effective for orthogonal circularly polarized waves with different incidence angles. That is the function, frequency, incident angle, and polarization of the metasurface carpet cloak are dynamically adjustable. Besides, the metasurface carpet cloak is robust to the incident angle and is capable of polarization angle stability. This work has potential value in the real-life application of metasurface-based illusion and cloaking devices.
