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Nanomaterials
Special Issues
Properties and Potential Applications of Nanoparticles
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Properties and Potential Applications of Nanoparticles

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: closed (23 May 2023) | Viewed by 3713

Special Issue Editor

Prof. Dr. Yap Wing Fen

E-Mail Website1 Website2
Guest Editor
1. Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
2. Functional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
Interests: optical sensor; structural and optical studies; nanomaterials; thin film; surface plasmon resonance
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nanoparticles are part of a wide class of materials that range in size from 1 to 100 nm. They can be classified into different classes based on their properties, shape, or size. The most common nanoparticles are metal nanoparticles, ceramic nanoparticle, polymeric nanoparticles, and carbon-based nanoparticles. Nanoparticles possess unique physical and optical properties due to their nanoscale size as well as high surface area. Due to these special characteristics, nanoparticles are suitable candidates for various applications, including sensing, catalysis, energy, medical, and environmental applications.

This Special Issue will cover various topics, ranging from synthesis and characterization to the potential application of various types of nanoparticles. This Special Issue will cover all of the properties (physical, structural, chemical, optical, or electrical) as well as potential applications in various field.

This Special Issue is open to original research articles as well as review papers that will help researchers worldwide understand the latest trends and progress in the field of nanoparticles.

Prof. Dr. Yap Wing Fen
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. Nanomaterials 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 2900 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

  • physical properties
  • optical properties
  • nanomaterials
  • carbon dot
  • graphene
  • thin films
  • sensors
  • energy

Published Papers (2 papers)

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Research

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18 pages, 5462 KiB  
Article
Semiconductor-to-Insulator Transition in Inter-Electrode Bridge-like Ensembles of Anatase Nanoparticles under a Long-Term Action of the Direct Current
by Dmitry A. Zimnyakov, Sergey S. Volchkov, Mikhail Yu. Vasilkov, Ilya A. Plugin, Alexey S. Varezhnikov, Nikolay V. Gorshkov, Arseni V. Ushakov, Alexey S. Tokarev, Dmitry V. Tsypin and Dmitry A. Vereshagin
Nanomaterials 2023, 13(9), 1490; https://doi.org/10.3390/nano13091490 - 27 Apr 2023
Cited by 1 | Viewed by 991
Abstract
The results of experimental studies of ohmic conductivity degradation in the ensembles of nanostructured anatase bridges under a long-term effect of direct current are presented. Stochastic sets of partially conducting inter-electrode bridges consisting of close-packed anatase nanoparticles were formed by means of the [...] Read more.
The results of experimental studies of ohmic conductivity degradation in the ensembles of nanostructured anatase bridges under a long-term effect of direct current are presented. Stochastic sets of partially conducting inter-electrode bridges consisting of close-packed anatase nanoparticles were formed by means of the seeding particles from drying aqueous suspensions on the surfaces of silica substrates with interdigital platinum electrodes. Multiple-run experiments conducted at room temperature have shown that ohmic conductivity degradation in these systems is irreversible. It is presumably due to the accumulated capture of conduction electrons by deep traps in anatase nanoparticles. The scaling analysis of voltage drops across the samples at the final stage of degradation gives a critical exponent for ohmic conductivity as ≈1.597. This value satisfactorily agrees with the reported model data for percolation systems. At an early stage of degradation, the spectral density of conduction current fluctuations observed within the frequency range of 0.01–1 Hz decreases approximately as 1/ω, while near the percolation threshold, the decreasing trend changes to ≈1/ω2. This transition is interpreted in terms of the increasing contribution of blockages and subsequent avalanche-like breakdowns of part of the local conduction channels in the bridges into electron transport near the percolation threshold. Full article
(This article belongs to the Special Issue Properties and Potential Applications of Nanoparticles)
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Review

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41 pages, 2883 KiB  
Review
A Review on Carbon Dots: Synthesis, Characterization and Its Application in Optical Sensor for Environmental Monitoring
by Nur Alia Sheh Omar, Yap Wing Fen, Ramli Irmawati, Hazwani Suhaila Hashim, Nur Syahira Md Ramdzan and Nurul Illya Muhamad Fauzi
Nanomaterials 2022, 12(14), 2365; https://doi.org/10.3390/nano12142365 - 11 Jul 2022
Cited by 23 | Viewed by 4743
Abstract
The development of carbon dots (CDs), either using green or chemical precursors, has inevitably led to their wide range application, from bioimaging to optoelectronic devices. The reported precursors and properties of these CDs have opened new opportunities for the future development of high-quality [...] Read more.
The development of carbon dots (CDs), either using green or chemical precursors, has inevitably led to their wide range application, from bioimaging to optoelectronic devices. The reported precursors and properties of these CDs have opened new opportunities for the future development of high-quality CDs and applications. Green precursors were classified into fruits, vegetables, flowers, leaves, seeds, stem, crop residues, fungi/bacteria species, and waste products, while the chemical precursors were classified into acid reagents and non-acid reagents. This paper quickly reviews ten years of the synthesis of CDs using green and chemical precursors. The application of CDs as sensing materials in optical sensor techniques for environmental monitoring, including the detection of heavy metal ions, phenol, pesticides, and nitroaromatic explosives, was also discussed in this review. This profound review will offer knowledge for the upcoming community of researchers interested in synthesizing high-quality CDs for various applications. Full article
(This article belongs to the Special Issue Properties and Potential Applications of Nanoparticles)
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