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Applied Sciences
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Towards Ideal Nanomaterials II
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Towards Ideal Nanomaterials II

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Nanotechnology and Applied Nanosciences".

Deadline for manuscript submissions: closed (20 November 2022) | Viewed by 6324

Special Issue Editor

Dr. Victor Burlakov

E-Mail Website
Guest Editor
Linacre College, Oxford University, Oxford OX1 3JA, UK
Interests: phase transformations and phase equilibria; nanoscience; exciton and charge transport; photovoltaics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Various nanostructures and nanoparticles are widely used in numerous applications, ranging from surface chemistry and photochemistry (catalysis, pyrolysis, photolysis) to electronics, photoelectronics and photovoltaics. Functional properties of the nanomaterials depend on a number of their physical and geometrical parameters, such as structure and phase state (amorphous/crystalline, solid/liquid), morphology, shape (particles, platelets, rods), average size and size distribution, spatial arrangement of nano-objects, etc. Determination of these parameters and linking them to functional properties pave the way towards fabricating nanomaterials with superb properties, i.e., ideal nanomaterials. The topic “Towards Ideal Nanomaterial” includes but is not restricted to studies and optimization of nanomaterial functional properties for:

Photovoltaics;

Optoelectronics;

Photo- and electrocatalysis;

Photo- and electrochemistry;

Surface templating;

Drug delivery.


Dr. Victor Burlakov
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. Applied Sciences is an international peer-reviewed open access semimonthly 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

  • monodisperse nanoparticles
  • periodic surface nanostructures
  • fabrication and storage
  • theory and modelling of coarsening and stability
  • phase transformations on nanoscale
  • structure and morphology evolution of nanosystems
  • functional properties of various nanomaterials
  • degradation mechanisms for functional nanomaterials

Published Papers (4 papers)

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Research

7 pages, 996 KiB  
Communication
Thermal Hysteresis in Melting–Solidification of Nanoparticles
by Victor M. Burlakov
Appl. Sci. 2023, 13(6), 3809; https://0-doi-org.brum.beds.ac.uk/10.3390/app13063809 - 16 Mar 2023
Viewed by 759
Abstract
The aim of this paper is the development of a qualitative understanding of thermal hysteresis, namely the difference between the melting Tm and solidification Ts temperatures of nanoparticles as a function of the particle size. In contrast to the melting temperature, [...] Read more.
The aim of this paper is the development of a qualitative understanding of thermal hysteresis, namely the difference between the melting Tm and solidification Ts temperatures of nanoparticles as a function of the particle size. In contrast to the melting temperature, the determination of the absolute value of the solidification temperature for nanoparticles is generally more difficult and subjected to significant uncertainties. In this study, we implemented a very generic approach based on classical nucleation theory and define the thermal hysteresis for a nanoparticle relative to its value for a much larger ‘reference’ particle made of the same material. The obtained thermal hysteresis is found to vanish when decreasing the nanoparticle size. The approach is illustrated using the examples of gold, bismuth, and platinum nanoparticles. Full article
(This article belongs to the Special Issue Towards Ideal Nanomaterials II)
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8 pages, 1529 KiB  
Communication
Amplification of Chirality in Photopatterned 3D Nanostructures of Chiral/Achiral Mixtures
by Hongsub Jee, Guanying Chen and Jaehyeong Lee
Appl. Sci. 2022, 12(17), 8702; https://0-doi-org.brum.beds.ac.uk/10.3390/app12178702 - 30 Aug 2022
Viewed by 1076
Abstract
The dispersion of a chiral polymer in a polymerizable matrix can amplify the chirality of the material, and a helical conformation of the chiral material within the polymerized SU-8 excessively increased the circular dichroism. Here, we demonstrate the fabrication of three-dimensional nanostructures of [...] Read more.
The dispersion of a chiral polymer in a polymerizable matrix can amplify the chirality of the material, and a helical conformation of the chiral material within the polymerized SU-8 excessively increased the circular dichroism. Here, we demonstrate the fabrication of three-dimensional nanostructures of chiral/achiral mixtures by two-photon lithography. The irradiation of light and annealing caused local changes in the chiral material and finally led to the enhancement of the optical properties. The demonstration of a photopatternable chiral material could expand the usage of optical materials for various applications. Full article
(This article belongs to the Special Issue Towards Ideal Nanomaterials II)
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7 pages, 884 KiB  
Article
Properties of Spatially Indirect Excitons in Nanowire Arrays
by Vladimir N. Pyrkov and Victor M. Burlakov
Appl. Sci. 2022, 12(10), 4924; https://0-doi-org.brum.beds.ac.uk/10.3390/app12104924 - 12 May 2022
Viewed by 894
Abstract
This paper deals with the excitons formed by electrons and holes located in different, closely placed semiconducting nanowires (spatially indirect excitons). We calculated the charge densities and the binding energies of the excitons for different nanowire diameters D and distances h between the [...] Read more.
This paper deals with the excitons formed by electrons and holes located in different, closely placed semiconducting nanowires (spatially indirect excitons). We calculated the charge densities and the binding energies of the excitons for different nanowire diameters D and distances h between the nanowires. Together with the estimated exciton lifetimes, these results suggest that at certain h and D, the spatially indirect excitons in the nanowire arrays may have the potential to serve as information-processing units. Possible ways of exciton generation in the nanowire arrays are discussed. Full article
(This article belongs to the Special Issue Towards Ideal Nanomaterials II)
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10 pages, 3267 KiB  
Article
AFM Characterization of Track-Etched Membranes: Pores Parameters Distribution and Disorder Factor
by Alina V. Golovanova, Mariia A. Domnina, Artem I. Arzhanov, Kamil R. Karimullin, Ivan Yu. Eremchev and Andrey V. Naumov
Appl. Sci. 2022, 12(3), 1334; https://0-doi-org.brum.beds.ac.uk/10.3390/app12031334 - 26 Jan 2022
Cited by 4 | Viewed by 2704
Abstract
The structural characteristics of polymer track-etched membranes (TM) were obtained by atomic force microscopy (AFM) for a set of samples (polypropylene, polycarbonate, polyethylene terephthalate, with average pore diameters ~183, 375, and 1430 nm, respectively). The analysis of AFM experimental data was performed by [...] Read more.
The structural characteristics of polymer track-etched membranes (TM) were obtained by atomic force microscopy (AFM) for a set of samples (polypropylene, polycarbonate, polyethylene terephthalate, with average pore diameters ~183, 375, and 1430 nm, respectively). The analysis of AFM experimental data was performed by using a specially developed technique for computer analysis of AFM images. The method allows one to obtain such parameters of TM as distribution of pore diameters, distribution of the minimum distances between the nearest pores, pore surface density, as well as to identify defective pores. Spatial inhomogeneities in the distribution of pore parameters were revealed. No anisotropy (some specific selected direction) was found in the surface distribution of the pores in the samples under study. Full article
(This article belongs to the Special Issue Towards Ideal Nanomaterials II)
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