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Patterns, Entropy, Surface Textures and Related Applications

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Multidisciplinary Applications".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 3791

Special Issue Editor


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Guest Editor
Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
Interests: patterns; entropy; novel materials; antimicrobial technologies; materials processing; solidification; high-temperature systems; surface texture
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The rapid advances of nanotechnology in materials science have led to the development of extremely useful texture-controlled surfaces that are now ubiquitous in our daily lives. Textured surfaces are also important for modern microbial elimination, semiconductor processing, information transfer, self-cleaning processes, machining, fracture, friction and wear, color, reflectivity, adhesion, cook-wear, heat transfer, catalysis, drug development, fluid-flow, aerodynamics, and fractal representations.

Surface science has thus become the key value-added branch of every core science and technology discipline. Surfaces may be thought to be associated with energy and entropy that is associated with their texture and chemistry. Atomic diffuseness is also often a key feature of nanoscale surfaces. Surfaces are now routinely described by their autocorrelation lengths and root mean-squared roughness. This journal issue is directed at the assessment of such surfaces, and their properties and usefulness.

A wide spectrum of articles is solicited for this issue—from engineering, physics, materials science, heat transfer, fluid flow, turbulence, drug development, chemistry, and food processing.

  • Description of surface texture
  • Techniques for topographic measurement of surfaces
  • Methods to create special surface textures in hard and soft materials
  • Coatings and surface asperities
  • Statistical techniques relevant to surfaces
  • Self-cleaning materials
  • Friction, fracture, and machining
  • Catalyst surfaces
  • Chemical functionality and surface structure
  • Texture-based drug development
  • Reflectivity
  • Turbulence
  • Fractal methods
  • Surface finishing techniques
  • Heat transfer
  • Food processing
  • Pattern formation and entropy generation
  • Novel biomimetic surfaces
  • Aerodynamics and entropy
  • And other related topics

Prof. Dr. Jainagesh (Jai) Sekhar
Guest Editor

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. Entropy 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 2600 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

surface science; surface texture; drug development; friction; catalysis; antimicrobial; biomimetic surfaces; entropy generation; pattern formation; 2D structures; heat transfer; food contact; statistical methods; coatings; wear

Published Papers (1 paper)

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Research

25 pages, 3560 KiB  
Article
Self-Organization, Entropy Generation Rate, and Boundary Defects: A Control Volume Approach
by Jainagesh A. Sekhar
Entropy 2021, 23(8), 1092; https://0-doi-org.brum.beds.ac.uk/10.3390/e23081092 - 22 Aug 2021
Cited by 7 | Viewed by 3212
Abstract
Self-organization that leads to the discontinuous emergence of optimized new patterns is related to entropy generation and the export of entropy. Compared to the original pattern that the new, self-organized pattern replaces, the new features could involve an abrupt change in the pattern-volume. [...] Read more.
Self-organization that leads to the discontinuous emergence of optimized new patterns is related to entropy generation and the export of entropy. Compared to the original pattern that the new, self-organized pattern replaces, the new features could involve an abrupt change in the pattern-volume. There is no clear principle of pathway selection for self-organization that is known for triggering a particular new self-organization pattern. The new pattern displays different types of boundary-defects necessary for stabilizing the new order. Boundary-defects can contain high entropy regions of concentrated chemical species. On the other hand, the reorganization (or refinement) of an established pattern is a more kinetically tractable process, where the entropy generation rate varies continuously with the imposed variables that enable and sustain the pattern features. The maximum entropy production rate (MEPR) principle is one possibility that may have predictive capability for self-organization. The scale of shapes that form or evolve during self-organization and reorganization are influenced by the export of specific defects from the control volume of study. The control volume (CV) approach must include the texture patterns to be located inside the CV for the MEPR analysis to be applicable. These hypotheses were examined for patterns that are well-characterized for solidification and wear processes. We tested the governing equations for bifurcations (the onset of new patterns) and for reorganization (the fine tuning of existing patterns) with published experimental data, across the range of solidification morphologies and nonequilibrium phases, for metallic glass and featureless crystalline solids. The self-assembling features of surface-texture patterns for friction and wear conditions were also modeled with the entropy generation (MEPR) principle, including defect production (wear debris). We found that surface texture and entropy generation in the control volume could be predictive for self-organization. The main results of this study provide support to the hypothesis that self-organized patterns are a consequence of the maximum entropy production rate per volume principle. Patterns at any scale optimize a certain outcome and have utility. We discuss some similarities between the self-organization behavior of both inanimate and living systems, with ideas regarding the optimizing features of self-organized pattern features that impact functionality, beauty, and consciousness. Full article
(This article belongs to the Special Issue Patterns, Entropy, Surface Textures and Related Applications)
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