A Liquid Crystal-Modulated Metastructure Sensor for Biosensing

In this paper, a liquid crystal-modulated metastructure sensor (MS) is proposed that can detect the refractive index (RI) of and change detection range under different applied voltages. The regulation based on bias states crystal at By changing sample in cavity to be detected, overall electromagnetic characteristics device resonant state are modified, thus position absorption peaks so RI correspond peaks, finally realizing sensing detection. unit denoted as RIU. 1.414–2.828 2.121–3.464, corresponding peak variation 0.8485–1.028 THz 0.7295–0.8328 THz, with sensitivity 123.8 GHz/RIU 75.6 GHz/RIU, respectively. addition, an approach optimizing explored, which suppress unwanted generated during design process by analyzing energy distribution directing current flow substrate. Four variables have more obvious impact performance listed, selection trend numerical values focused on, fully considering errors may caused manufacturing actual use. At same time, incident angle polarization also included considered range, shows good stability these angles. Finally, influence number rings discussed, its conclusion has guiding value for demand. This new MS advantages small size high expected used bio-detection, sensing, on. All results work were obtained aid simulations finite element method.