Dissipative structures in thin films of cavitation-Activated soot suspensions

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: International Scientific Conference on Applied Physics, Information Technologies and Engineering 2019, APITECH 2019

Год издания: 2019

Идентификатор DOI: 10.1088/1742-6596/1399/4/044073

Аннотация: This paper presents analysis of optical images of films obtained by evaporation (293 K) of a thin layer of low-concentrated (1% wt.) aqueous soot suspensions in a Petri dish. Suspensions of wood, fullerene and diamond-containing (after detonation synthesis) soot were prepared using hydrodynamic dispersion in a cavitation mixer with a wedge-shaped cavitator with the rotor's angular velocity of rotation being 10000 rpm. The components of the hydrodynamic dispersion process are turbulent micro-mixing and bubble cavitation. As a result of intense turbulence, carbon suspensions assumed properties of non-equilibrium systems. The images of an optical microscope revealed self-organized dissipative micron-sized structures in the dried films being present there in the form of chain, branched and ring-shaped cluster fractals of various dimensions that look very similar to nanotubes. The self-Assembling effect was identified for all the types of suspensions under study. The EPR method was used to study the change in the electronic structure of soot resulting from the exposure to high temperatures and pressures that occur when the cavitation bubbles collapse (cavitational activation). The dynamics of changes in dissipative structures in the process of film drying was monitored. © Published under licence by IOP Publishing Ltd.

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Издание

Журнал: Journal of Physics: Conference Series

Выпуск журнала: Vol. 1399, Is. 4

Номера страниц: 44073

ISSN журнала: 17426588

Издатель: Institute of Physics Publishing

Авторы

  • Stebeleva O.P. (Siberian Federal University, Svobodnyy Ave 29, Krasnoyarsk, 660049, Russian Federation)
  • Kashkina L.V. (Siberian Federal University, Svobodnyy Ave 29, Krasnoyarsk, 660049, Russian Federation)
  • Petrakovskaya E.A. (L.V. Kirensky Institute of Physics SB RAS, Fed. Res. Ctr. Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50, Krasnoyarsk, 660021, Russian Federation)
  • Nikitin S.L. (Siberian Federal University, Svobodnyy Ave 29, Krasnoyarsk, 660049, Russian Federation, Fed. Res. Ctr. Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50, Krasnoyarsk, 660021, Russian Federation)
  • Dobrosmyslov S.S. (Siberian Federal University, Svobodnyy Ave 29, Krasnoyarsk, 660049, Russian Federation, Fed. Res. Ctr. Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50, Krasnoyarsk, 660021, Russian Federation)
  • Rublev G.V. (Krasnoyarsk Institute of Railway Engineering Branch of Irkutsk State Transport University, Lado Kechoveli st 89, Krasnoyarsk, 660028, Russian Federation)

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