Научная электронная библиотека ULRICH'S Periodicals Directory

Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK UDC 621.793 Doi: 10.31772/2587-6066-2019-20-4-478-484
RESEARCH OF ELECTROMAGNETIC SHIELDING PROPERTIES OF SINGLE-WALLED CARBON NANOTUBES THIN TRANSPARENT FILMS
Voronin A. S., Fadeev Yu. V., Simunin M. M., Podshivalov I. V., Khartov S. V.
Krasnoyarsk Scientific Center of the SB RAS, 50, Akademgorodok, Krasnoyarsk, 660036, Russian Federation; Siberian Federal University, 79, Svobodny Av., Krasnoyarsk, 660041, Russian Federation; Institute of Physics named after L.V. Kirensky, 50, Akademgorodok, Krasnoyarsk, 660036, Russian Federation; E-mail: a.voronin1988@mail.ru
The paper presents the results of studying the shielding properties of thin transparent films in single-walled carbon nanotubes on flexible substrates of polyethylene terephthalate. The films were formed by spraying colloidal solution on single-walled carbon nanotubes. The film thickness was determined by the volume of the sprayed colloidal solution and was measured using transmission electron microscopy in a cross-section mode. The morphology and structural quality of the films were studied by electron microscopy, optical spectroscopy, and Raman spectroscopy. The results showed the high structural quality of the material. According to Raman spectroscopy, the ratio of peaks intensities G / D is 23.4, which is the evidence of a significant predominance of carbon in the sp2 hybridization. It is typical for graphitelike systems and, in particular, carbon nanotubes. The spectral dependences of the transmission and reflection coefficients of radio waves in the K range of 18–26.5 GHz were studied. Absorption of radiation is the dominant shielding mechanism. Increasing the film thickness from 15.9 to 56.1 nm is accompanied by decreasing the surface resistance from 971 to 226 Ohm / sq, while optical transparency decreases from 93.58 to 76.71 %. Shielding efficiency increases from 2.29 to 6.6 dB, increasing the proportion of absorbed radiation from 34.6 to 51.2 % at a frequency of 18 GHz. This indicates the prospects for the use of films as electromagnetic shielding and anti-icing coatings in the aerospace industry.
Keywords: single-walled carbon nanotubes, thin films, electromagnetic shielding.
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Voronin Anton Sergeyevich – Ph. D., reseacher Department of Molecular Electronics; FRC KSC SB RAS.
E-mail: a.voronin1988@mail.ru.
Fadeev Yurii Vladimirovich – junior researcher Department of Molecular Electronics; FRC KSC SB RAS.
Simunin Mikhail Maksimovich – Ph. D, researcher Department of Molecular Electronics; FRC KSC SB RAS,
Siberian Federal University.
Podshivalov Ivan Valerevich – junior researcher Laboratory of Scientific Instrumentation; L. V. Kirensky Institute
of Physics.
Khartov Stanislav Viktorovich – Ph. D, Senior Researcher Department of Molecular Electronics; FRC KSC SB RAS.


  RESEARCH OF ELECTROMAGNETIC SHIELDING PROPERTIES OF SINGLE-WALLED CARBON NANOTUBES THIN TRANSPARENT FILMS