Design and simulation of a temperature-tunable terahertz metamaterials based on VO 2 particles

摘要

A temperature-sensitive metamaterial containing vanadium dioxide (VO2) particles is designed and simulated in the terahertz band. A near-perfect absorption peak is achieved by optimizing structural parameters at room temperature. The peak amplitude and resonance frequency can be linearly modulated through changing structural parameters. Moreover, a new absorption band and an absorption peak are achieved when the simulated temperature reaches or exceeds the phase transition point of VO2particles. The absorption band and the absorption peak are shifted to higher resonance frequencies with the temperature increasing. Moreover, this absorption band is expanded and the peak amplitude is gradually decreased with the temperature increasing. This proposed temperature-tunable terahertz metamaterial absorber can be used in many areas, such as sensing, communication, and more.