Outstanding Radiation Tolerance of Supported Graphene: Towards 2D Sensors for the Space Millimeter Radioastronomy; Nanomaterials; Vol. 11, iss. 1

Bibliografski detalji
Parent link:	Nanomaterials Vol. 11, iss. 1.— 2021.— [170, 12 p.]
Autori kompanije:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Научно-производственная лаборатория "Импульсно-пучковых, электроразрядных и плазменных технологий"
Daljnji autori:	Poddubskaya O. G. Olesya Germanovna, Batrakov K. G. Konstantin Germanovich, Khrushchinsky A. A. Arkady Arkadjevich, Kuten S. A. Semen Adamovich, Plyushch A. O. Artem Olegovich, Stepanov A. V. Andrey Vladimirovich, Remnev (Remnyov) G. E. Gennady Efimovich, Shvetsov V. N. Valery Nikolaevich, Baah M. Marian, Svirko Yu. P. Yury Petrovich, Kuzhir P. P. Polina Pavlovna
Sažetak:	Title screen We experimentally and theoretically investigated the effects of ionizing radiation on a stack of graphene sheets separated by polymethyl methacrylate (PMMA) slabs. The exceptional absorption ability of such a heterostructure in the THz range makes it promising for use in a graphene-based THz bolometer to be deployed in space. A hydrogen/carbon ion beam was used to simulate the action of protons and secondary ions on the device. We showed that the graphene sheets remain intact after irradiation with an intense 290 keV ion beam at the density of 1.5 ? 1012 cm?2. However, the THz absorption ability of the graphene/PMMA multilayer can be substantially suppressed due to heating damage of the topmost PMMA slabs produced by carbon ions. By contrast, protons do not have this negative effect due to their much longer mean free pass in PMMA. Since the particles’ flux at the geostationary orbit is significantly lower than that used in our experiments, we conclude that it cannot cause tangible damage of the graphene/PMMA based THz absorber. Our numerical simulations reveal that, at the geostationary orbit, the damaging of the graphene/PMMA multilayer due to the ions bombardment is sufficiently lower to affect the performance of the graphene/PMMA multilayer, the main working element of the THz bolometer, which remains unchanged for more than ten years.
Jezik:	engleski
Izdano:	2021
Teme:	электронный ресурс труды учёных ТПУ graphene terahertz absorption ionizing radiation geostationary orbit графен абсорбция ионизирующее излучение геостационарная орбита
Online pristup:	https://doi.org/10.3390/nano11010170
Format:	Elektronički Poglavlje knjige
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664362