Open AccessHelium-graphene optical-acoustic converter of extreme ensitivity
Author(s) -
I. S. Gibin,
P. E. Kotlyar
Publication year - 2021
Publication title -
prikladnaâ fizika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.205
H-Index - 7
ISSN - 1996-0948
DOI - 10.51368/1996-0948-2021-3-78-84
Subject(s) - graphene , membrane , materials science , perforation , sensitivity (control systems) , optoelectronics , helium , transducer , nanotechnology , electronic engineering , acoustics , composite material , physics , chemistry , engineering , biochemistry , atomic physics , punching
The prospects for the use of single-layer graphene in the design of optical-acoustic converters (OAC) of a new generation are considered. It is shown that the limiting characteristics of transducers with single-layer graphene membranes can be obtained only in OACs constructed according to the Hayes scheme. The main characteristics of membranes – the main elements of OAC – are considered, and the physical properties of graphene, as the most preferred mate-rial for membranes, are analyzed. Estimates having been made show that the use of SLG gra-phene membranes makes it possible to create IR and THz radiation receivers with cells of the order of tens of microns with extremely high sensitivity. To achieve the maximum sensitivity, it is proposed to perform edge perforation of graphene membranes. A new design scheme of uncooled helium-graphene optoacoustic receivers with theoretically maximum sensitivity and speed and an operating range extended to helium temperatures is proposed. The de-scribed technical solutions can be used as the basis for the design of uncooled.