TY - JOUR
T1 - Outstanding radiation tolerance of supported graphene
T2 - Towards 2d sensors for the space millimeter radioastronomy
AU - Paddubskaya, Alesia
AU - Batrakov, Konstantin
AU - Khrushchinsky, Arkadiy
AU - Kuten, Semen
AU - Plyushch, Artyom
AU - Stepanov, Andrey
AU - Remnev, Gennady
AU - Shvetsov, Valery
AU - Baah, Marian
AU - Svirko, Yuri
AU - Kuzhir, Polina
N1 - Funding Information:
This work was financially supported by Radiation tOlerant THz SensOR (ROTOR) EU project (through the open call to ATTRACT EU project H2020-EU.1.4.2.1. ID: 777222), Horizon 2020 RISE DiSeTCom Project 823728 (associated with Graphene Flagship), the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), decision 320166. P.K. is supported by Horizon 2020 IF TURANDOT project 836816. K.B., G.R and A.S. are thankful for support by Tomsk State University Competitiveness Improvement Program.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/1
Y1 - 2021/1
N2 - 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.
AB - 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.
KW - Absorption
KW - Geostationary orbit
KW - Graphene
KW - Ionizing radiation
KW - Terahertz
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U2 - 10.3390/nano11010170
DO - 10.3390/nano11010170
M3 - Article
AN - SCOPUS:85099226143
VL - 11
SP - 1
EP - 12
JO - Nanomaterials
JF - Nanomaterials
SN - 2079-4991
IS - 1
M1 - 170
ER -