Flexible and Electrically Tunable Plasmons in Graphene–Mica Heterostructures. Issue 8 (16th June 2018)

• Record Type: Journal Article
• Authors: Hu, Hai; Guo, Xiangdong; Hu, Debo; Sun, Zhipei; Yang, Xiaoxia; Dai, Qing
• Is Part Of: Advanced science. Volume 5:Issue 8(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-16
• Subjects: flexible plasmons -- graphene–mica heterostructures -- graphene plasmons -- mid‐infrared plasmons; Science -- Periodicals; 505
• DOI: 10.1002/advs.201800175
• Languages: English
• ISSNs: 2198-3844

Abstract

Abstract: Flexible plasmonic devices with electrical tunability are of great interest for diverse applications, such as flexible metamaterials, waveguide transformation optics, and wearable sensors. However, the traditional flexible metal–polymer plasmonic structures suffer from a lack of electrical tunability. Here the first flexible, electrically tunable, and strain‐independent plasmons based on graphene–mica heterostructures are experimentally demonstrated. The resonance frequency, strength, quality factor, electrical tunability, and lifetime of graphene plasmons exhibit no visible change at bending radius down to 1 mm and after 1000 bending cycles at a radius of 3 mm. The plasmon‐enhanced infrared spectroscopy detection of chemicals is also demonstrated to be unaffected in the flexible graphene–mica heterostructures. The results provide the basis for the design of flexible active nanophotonic devices such as plasmonic waveguides, resonators, sensors, and modulators. Abstract : Flexible and electrically tunable plasmonic devices are fabricated on graphene–mica heterostructures. The devices display high tolerance to bending and have unchanged plasmon frequency, intensity, quality factor, and tunability with bending radii down to 1 mm. Plasmon‐enhanced infrared absorption is demonstrated on the bending device. The flexible graphene plasmon provides the basis for wearable sensors and flexible active nanophotonic devices.