Reconfigurable and Nonvolatile Terahertz Metadevices Based on a Phase-Change Material

• DOI: 10.1021/acsphotonics.1c01977
• Publication Date: 2022-03-10T14:54:04Z
• Authors: Xieyu Chen; Shoujun Zhang; Kuan Liu; Haiyang Li; Yihan Xu; Jiajia Chen; Yongchang Lu; Qingwei Wang; Xi Feng; Kemeng Wang; Zeru Liu; Tun Cao; Zhen Tian
• Keywords: Modulation (music); Non-Volatile Memory

Reconfigurable terahertz (THz) devices with nonvolatile and multilevel properties are highly desirable in many applications from imaging high-capacity communication to nondestructive biosensing. Here, we present experimentally demonstrate a promising platform for dynamic THz by exploring the reversible, nonvolatile, modulation features of Ge2Sb2Te5 (GST) material. These were fully demonstrated characterizing response centimeter-level area GST layer during thermally stimulated crystallization optically reamorphization process. As proof concept, hybrid plasmonic dimer structure composed two trapezoidal metallic rings connected islands was designed, fabricated, characterized. The this device realized inducing processes thermal optical activation, respectively. Moreover, electrical switching designed also applying 5 s duration pulse. With these findings, study may open an attractive direction wide range design possibilities terms devices.