Multi-Walled Carbon Nanotube Aerogels in Quasi-Optical Terahertz Beams | Sciact - CRIS-система Института катализа

Multi-Walled Carbon Nanotube Aerogels in Quasi-Optical Terahertz Beams Научная публикация

Конференция

1st International Congress on Graphene, 2D Materials and Applications
30 сент. - 4 окт. 2019 , Сочи

Журнал

AIP Conference Proceedings
ISSN: 0094-243X , E-ISSN: 1551-7616

Вых. Данные

Год: 2021, Том: 2359, Номер: 1, Номер статьи : 020004, Страниц : 6 DOI: 10.1063/5.0055770

Ключевые слова

Optical properties, Electrophysiology, Plasma waves, Aerogel, Catalysts and Catalysis, Nanotubes

Авторы

Dorofeev Igor O. ¹ , Suslyaev Valentin I. ¹ , Moseenkov Sergey I. ² , Kuznetsov Vladimir L. ^1,2 , Dorozhkin Kirill V. ¹

Организации

1	National Research Tomsk State University, Lenina ave. 36, Tomsk 634050, Russia
2	Boreskov Institute of Catalysis SB RAS, Lavrentieva ave. 5, 630090 Novosibirsk, Russia

Информация о финансировании (1)

Российский фонд фундаментальных исследований

17-73-20293

The paper presents the modeling of the reflectance in the terahertz range from the plane-parallel aerogel layers formed by multi-walled carbon nanotubes (MWCNTs), which were synthesized via the original one-step technique using a preformed Fe–Co/CaO catalyst at 650–700°C in C2H4/Ar feedstock. With an increase in frequency from 100 GHz to 1.5 THz, the reflectance decreases by more than a factor of two. Based on the experimental data and the well-known wire medium model formed by a three-dimensional lattice of intersecting conductors, a model of a regular wire medium is constructed using MWCNTs with effective electrophysical characteristics equivalent to those of an irregular aerogel medium. This model reveals that a significant drop in the reflectance in the terahertz frequency range occurs because the plasma frequency of the equivalent medium is located here. The model allows estimating the properties of the aerogel environment in the frequency range extending up to 5 THz and with variations in the packing density of MWCNTs in aerogel. Estimates of the reflection, transmission, and absorption are presented for the case of normal EMI incidence on thin (submillimeter) layers of such a medium.

Dorofeev I.O. , Suslyaev V.I. , Moseenkov S.I. , Kuznetsov V.L. , Dorozhkin K.V.
Multi-Walled Carbon Nanotube Aerogels in Quasi-Optical Terahertz Beams

AIP Conference Proceedings. 2021. V.2359. N1. 020004 :1-6. DOI: 10.1063/5.0055770 Scopus РИНЦ CAPlus OpenAlex

Полный текст от издателя

Опубликована online:

22 июн. 2021 г.

Scopus:	2-s2.0-85109403392
РИНЦ:	46885654
Chemical Abstracts:	2021:2499829 CAplus
OpenAlex:	W3175224071

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