Detecting terahertz wave by microphone based on the photoacoustic effect in graphene foam.

ABSTRACT: Terahertz (THz) wave plays important roles in the research of material properties, the non-invasive human security check and the next generation wireless communication. The progress of the scientific and technological applications of THz wave is strongly dependent on the improvement of THz detectors. Here a novel THz wave detection scheme is proposed in which the THz radiation is detected by an audible microphone based on the photo-thermo-acoustic (PTA) effect in graphene foam. Thanks to the room-temperature broadband electromagnetic absorption characteristics of graphene foam and the fast heat transfer between graphene foam and ambient air, this detection method not only inherits the advantages of the photo-thermal THz detector such as room-temperature and full bandwidth, but also has a r

SUBMITTER: Zhang N 

PROVIDER: S-EPMC11502112 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature