Dissipative structures in thin films of cavitation-Activated soot suspensions

Описание

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

Конференция: International Scientific Conference on Applied Physics, Information Technologies and Engineering (APITECH) / 2-nd International Scientific and Practical Conference on Borisov's Readings; Siberian Fed Univ, Polytechn Inst, Krasnoyarsk, RUSSIA; Siberian Fed Univ, Polytechn Inst, Krasnoyarsk, RUSSIA

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 withПоказать полностьюa 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 Fed Univ, Svobodnyy Ave 79, Krasnoyarsk 660049, Russia)
  • Kashkina L.V (Siberian Fed Univ, Svobodnyy Ave 79, Krasnoyarsk 660049, Russia)
  • Petrakovskaya E.A. (Russian Acad Sci, LV Kirensky Inst Phys SB RAS, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Akademgorodok 50, Krasnoyarsk 660021, Russia)
  • Nikitin S.L. (Siberian Fed Univ, Svobodnyy Ave 79, Krasnoyarsk 660049, Russia; Russian Acad Sci, Fed Res Ctr, Krasnoyarsk Sci Ctr, Siberian Branch, Akademgorodok 50, Krasnoyarsk 660021, Russia)
  • Dobrosmyslov S.S. (Siberian Fed Univ, Svobodnyy Ave 79, Krasnoyarsk 660049, Russia; Russian Acad Sci, Fed Res Ctr, Krasnoyarsk Sci Ctr, Siberian Branch, Akademgorodok 50, Krasnoyarsk 660021, Russia)
  • Rublev G.V (Irkutsk State Transport Univ, Railway Engn Branch, Krasnoyarsk Inst, Lado Kechoveli St 89, Krasnoyarsk 660028, Russia)