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Symmetry
Special Issues
Dispersed Systems: Physics, Optics, Invariants, Symmetry
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Dispersed Systems: Physics, Optics, Invariants, Symmetry

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 7687

Special Issue Editors

Dr. Olga Kudryashova

E-Mail Website
Guest Editor
Institute for Problems of Chemical and Energetic Technologies of the Siberian Branch оf the Russian Academy of Sciences, Biysk, Russia
Interests: materials; acoustics; ultrasonics; mathematical modeling
Prof. Dr. Katarzyna Zorena

E-Mail Website
Guest Editor
Department of Immunobiology and Environmental Microbiology, Medical University of Gdańsk, 80-309 Gdańsk, Poland
Interests: medicine biochemistry; genetics and molecular biology; immunology and microbiology; pharmacology; toxicology and pharmaceutics environmental science; neuroscience; social sciences
Special Issues, Collections and Topics in MDPI journals
Dr. Sergey S. Titov

E-Mail Website
Guest Editor
Institute for Problems of Chemical and Energetic Technologies of the Siberian Branch оf the Russian Academy of Sciences, Biysk, Russia
Interests: development of methods and algorithms for processing experimental data to implement optical measurement techniques of aerosol disperse characteristics

Special Issue Information

Dear Colleagues,

Physics and mechanics of disperse systems form part of the mechanics of gas and liquid. In the formulation and solution of problems in the mechanics of gas and liquid, methods of similarity theory are widely used; when using this theory, anything from physical quantities all the way to some of the dimensionless invariants may be identified by researchers, which shows a deep physical reflection of the interaction of various phenomena.

Disperse systems as systems in two-phase states exhibit a variety of new properties in comparison with a continuous medium, and they are widely used in technological processes and medicine. However, there are also unsolved environmental problems associated, for example, with aerosol pollution.

There are fundamental and applied problems associated with measuring the size and concentration of disperse particles. Optical measurement methods imply the development of the optics of disperse systems, in which the symmetry or asymmetry of the radiation scattering indicatrix plays an important role.

The aim of this Special Issue is to highlight the importance of the concept of symmetry in physics, mechanics, and optics of disperse systems.

We require contributions—research and review articles—covering a broad range of topics in physics, mechanics, and optics of disperse systems, and symmetry, including, though not limited to, the following:

  • Similarity theory in solving problems of mechanics of disperse systems;
  • Similarity criteria in various problems of physics of disperse systems;
  • Symmetry in the creation, evolution, and propagation of disperse systems;
  • Symmetry and asymmetry manifestations in optics of disperse systems;
  • Symmetry in nanoparticles;
  • Applied problems focusing on the role of symmetry in the science of disperse systems.

Dr. Olga Kudryashova
Prof. Dr. Katarzyna Zorena
Dr. Sergey S. Titov
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • similarity theory in aerosol mechanics
  • similarity criteria in aerosol physics
  • symmetry in the creation, evolution, and propagation of aerosols
  • symmetry and asymmetry in aerosol optics
  • symmetry in nanoaerosols
  • applied problems focusing on the role of symmetry in aerosol science

Published Papers (4 papers)

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Editorial

Jump to: Research

2 pages, 184 KiB  
Editorial
Dispersed Systems: Physics, Optics, Invariants, Symmetry
by Olga B. Kudryashova
Symmetry 2022, 14(8), 1602; https://0-doi-org.brum.beds.ac.uk/10.3390/sym14081602 - 4 Aug 2022
Viewed by 981
Abstract
Disperse systems are widely used in technology (medicine, food science, oil refining, metallurgy, etc [...] Full article
(This article belongs to the Special Issue Dispersed Systems: Physics, Optics, Invariants, Symmetry)

Research

Jump to: Editorial

12 pages, 5825 KiB  
Article
Synchronized Two-Camera Laser Monitor for Studying Combusting Powder Systems
by Lin Li, Fedor Gubarev and Andrei Mostovshchikov
Symmetry 2022, 14(4), 656; https://0-doi-org.brum.beds.ac.uk/10.3390/sym14040656 - 24 Mar 2022
Cited by 2 | Viewed by 1593
Abstract
In this paper, we offer a laboratory facility for in situ visualization of the combustion of ultrafine metal powders, which combines laser initiation and simultaneous high-speed recording of images of the flame of a burning material and a surface covered by a flame. [...] Read more.
In this paper, we offer a laboratory facility for in situ visualization of the combustion of ultrafine metal powders, which combines laser initiation and simultaneous high-speed recording of images of the flame of a burning material and a surface covered by a flame. Visualization of the surface through the flame is realized using a laser monitor—an optical projection system with brightness amplification. The proposed imaging system makes it possible to get more detailed information about the combustion process, in particular, to study the change in the surface through the flame in the area of laser initiation, and the propagation of heating and combustion waves over the sample, as well as to study the change in the surface reflectance during combustion. To study the area of laser initiation, it is proposed to simultaneously record images of a laser monitor with two cameras. The symmetry of the combustion wave front propagation and the combustion products’ formation during laser initiation of the nanoAl + Fe3O4 thermite mixture was demonstrated. The nature of propagation in the form of a ring is a consequence of the symmetry of the properties of the system under study, at the micro and macro levels. Full article
(This article belongs to the Special Issue Dispersed Systems: Physics, Optics, Invariants, Symmetry)
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19 pages, 4663 KiB  
Article
The Limits of Fine Particle Ultrasonic Coagulation
by Vladimir N. Khmelev, Viktor A. Nesterov, Alexander S. Bochenkov and Andrey V. Shalunov
Symmetry 2021, 13(9), 1607; https://0-doi-org.brum.beds.ac.uk/10.3390/sym13091607 - 1 Sep 2021
Cited by 8 | Viewed by 2046
Abstract
This paper describes the studies conducted in order to identify the limits of ultrasonic exposure’s effect on the fine particle coagulation process. It has been established as a result of the studies that ultrasonic exposure with a sound pressure level of 160 dB [...] Read more.
This paper describes the studies conducted in order to identify the limits of ultrasonic exposure’s effect on the fine particle coagulation process. It has been established as a result of the studies that ultrasonic exposure with a sound pressure level of 160 dB is capable of ensuring coagulation of particles sized 2.5 µm with efficiency δ = 83%. An increase of the coagulation up to 13% is induced with generation of swirling flows. The suggested approach to increasing the coagulation efficiency owing to vortex-type flows between the radiating and reflecting surfaces ensures efficiency of coagulation δ = 96 %. The implementation of this approach has shown that with generation of vortex-type acoustic flows, it makes the most sense for a concentration of particles of 18×10−3 g/m3. Incremental efficiency at such concentrations amounts to 50%. Full article
(This article belongs to the Special Issue Dispersed Systems: Physics, Optics, Invariants, Symmetry)
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15 pages, 704 KiB  
Article
Universal Synthesizer of Mueller Matrices Based on the Symmetry Properties of the Enpolarizing Ellipsoid
by José J. Gil and Ignacio San José
Symmetry 2021, 13(6), 983; https://0-doi-org.brum.beds.ac.uk/10.3390/sym13060983 - 1 Jun 2021
Cited by 3 | Viewed by 2024
Abstract
Polarimetry is today a widely used and powerful tool for nondestructive analysis of the structural and morphological properties of a great variety of material samples, including aerosols and hydrosols, among many others. For each given scattering measurement configuration, absolute Mueller polarimeters provide the [...] Read more.
Polarimetry is today a widely used and powerful tool for nondestructive analysis of the structural and morphological properties of a great variety of material samples, including aerosols and hydrosols, among many others. For each given scattering measurement configuration, absolute Mueller polarimeters provide the most complete polarimetric information, intricately encoded in the 16 parameters of the corresponding Mueller matrix. Thus, the determination of the mathematical structure of the polarimetric information contained in a Mueller matrix constitutes a topic of great interest. In this work, besides a structural decomposition that makes explicit the role played by the diattenuation-polarizance of a general depolarizing medium, a universal synthesizer of Muller matrices is developed. This is based on the concept of an enpolarizing ellipsoid, whose symmetry features are directly linked to the way in which the polarimetric information is organized. Full article
(This article belongs to the Special Issue Dispersed Systems: Physics, Optics, Invariants, Symmetry)
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