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Nanomaterials
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Nanomaterials for Sensors, Actuators and Environmental Applications
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Nanomaterials for Sensors, Actuators and Environmental Applications

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

Deadline for manuscript submissions: 25 February 2025 | Viewed by 6777

Special Issue Editor

Dr. Matteo Tonezzer

E-Mail Website
Guest Editor
Institute of Materials for Electronics and Magnetism, National Research Council of Italy, Rome, Italy
Interests: gas sensors; nanomaterials; electronic noses;
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The ability to finely manipulate matter at the nanometer level has opened up a new field of knowledge called "nanoscience and nanotechnology". The control of the size, structure, composition and morphology of inorganic, organic and hybrid nanostructures and nanocomposites allows us to compile, so to speak, a new periodic table of elements, still largely unexplored. Although scientists are studying them intensively, nanostructured materials have very large potential, and there is still ample room for both fundamental and applied research. Such investigations are strongly stimulated by the wide range of possible applications for the developed materials, which include smart food packaging, innovative devices for energy production and storage, flexible and economical mobile phone screens, new diagnostic techniques for IoT medicine, more efficient thermal insulation materials for buildings, distributed sensors for flammable and dangerous gases, the elimination of pollutants in water, prosthetics with longer life, smart drug delivery, among others.

The purpose of this Special Issue is to gather the latest results in modeling, simulation, synthesis, advanced characterization and potential applications of nanostructured materials, leading to a more eco-sustainable world.

Topics will include, but are not limited to:

  • The modeling, simulation and characterization of nanomaterials;
  • Innovative preparation routes for nanomaterials with tailored spatial organization;
  • Environmental monitoring;
  • Healthcare;
  • Food quality assessment;
  • Sensing and biosensing devices;
  • Energy harvesting, storage and conversion;
  • Functional and smart materials;
  • Recycling and renewable resources.

We encourage the submission of reviews, mini-reviews, original articles and short communications highlighting the potential of nanomaterials to improve the environment and human life.

Dr. Matteo Tonezzer
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

  • nanomaterials
  • nanostructures
  • nanocomposites
  • nanodevices
  • sensors
  • batteries
  • supercapacitors
  • (photo)catalysts
  • energy production
  • energy storage
  • water purification
  • drug delivery

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

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Research

10 pages, 2102 KiB  
Article
Fluorescence-Based Multimodal DNA Logic Gates
by Chamika Harshani Algama, Jamil Basir, Kalani M. Wijesinghe and Soma Dhakal
Nanomaterials 2024, 14(14), 1185; https://doi.org/10.3390/nano14141185 - 12 Jul 2024
Viewed by 1094
Abstract
The use of DNA structures in creating multimodal logic gates bears high potential for building molecular devices and computation systems. However, due to the complex designs or complicated working principles, the implementation of DNA logic gates within molecular devices and circuits is still [...] Read more.
The use of DNA structures in creating multimodal logic gates bears high potential for building molecular devices and computation systems. However, due to the complex designs or complicated working principles, the implementation of DNA logic gates within molecular devices and circuits is still quite limited. Here, we designed simple four-way DNA logic gates that can serve as multimodal platforms for simple to complex operations. Using the proximity quenching of the fluorophore–quencher pair in combination with the toehold-mediated strand displacement (TMSD) strategy, we have successfully demonstrated that the fluorescence output, which is a result of gate opening, solely relies on the oligonucleotide(s) input. We further demonstrated that this strategy can be used to create multimodal (tunable displacement initiation sites on the four-way platform) logic gates including YES, AND, OR, and the combinations thereof. The four-way DNA logic gates developed here bear high promise for building biological computers and next-generation smart molecular circuits with biosensing capabilities. Full article
(This article belongs to the Special Issue Nanomaterials for Sensors, Actuators and Environmental Applications)
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14 pages, 5658 KiB  
Article
Hybrid Hydrogen Sensor Based on Pd/WO3 Showing Simultaneous Chemiresistive and Gasochromic Response
by Sanghoon Kim, Bohee Maeng, Yijun Yang, Kwanwoo Kim and Daewoong Jung
Nanomaterials 2023, 13(18), 2563; https://doi.org/10.3390/nano13182563 - 15 Sep 2023
Cited by 2 | Viewed by 1461
Abstract
The gasochromism of WO3, wherein the color of the material changes according to the reaction of gas, can immediately allow for the determination of the presence of hydrogen by the naked eye. We have also developed a hybrid hydrogen sensor for [...] Read more.
The gasochromism of WO3, wherein the color of the material changes according to the reaction of gas, can immediately allow for the determination of the presence of hydrogen by the naked eye. We have also developed a hybrid hydrogen sensor for WO3, a metal oxide, that can simultaneously utilize its gasochromic response and resistance to hydrogen. Because the proposed sensor has a transparent electrode on a glass substrate, it is a structure that can not only reveal the change in resistance but also more clearly illustrate the gasochromic response. A hybrid sensing demonstration in a hydrogen leak environment was successfully performed to verify a sensor that was capable of utilizing the resistive and gasochromic response of WO3. Full article
(This article belongs to the Special Issue Nanomaterials for Sensors, Actuators and Environmental Applications)
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10 pages, 1841 KiB  
Article
Detection of Tobacco Bacterial Wilt Caused by Ralstonia solanacearum by Combining Polymerase Chain Reaction with an α-Hemolysin Nanopore
by Ying Wang, Yusen Li, Xin Zhou, Wenna Zhang, Shusheng Zhang and Dongmei Xi
Nanomaterials 2023, 13(2), 332; https://doi.org/10.3390/nano13020332 - 13 Jan 2023
Cited by 2 | Viewed by 2404
Abstract
Tobacco bacterial wilt is a serious disease caused by the soil-borne bacterium Ralstonia solanacearum (R. solanacearum). Herein, a rapid and purification-free α-hemolysin (α-HL) nanopore-sensing strategy based on polymerase chain reaction (PCR) and lambda exonuclease digestion was established to detect R. solanacearum [...] Read more.
Tobacco bacterial wilt is a serious disease caused by the soil-borne bacterium Ralstonia solanacearum (R. solanacearum). Herein, a rapid and purification-free α-hemolysin (α-HL) nanopore-sensing strategy based on polymerase chain reaction (PCR) and lambda exonuclease digestion was established to detect R. solanacearum. A 198-nucleotide-long single-stranded DNA was obtained via asymmetric PCR or the lambda exonuclease-mediated digestion of the PCR product. The DNA fragment produced unique long-lived, current-blocking signals when it passed through the α-HL nanopore. This sensing approach can allow for the determination of R. solanacearum in tobacco samples and can be conveniently extended to other DNA monitoring because of the extremely wide range of PCR applications. Full article
(This article belongs to the Special Issue Nanomaterials for Sensors, Actuators and Environmental Applications)
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11 pages, 6482 KiB  
Article
Adsorption and Gas-Sensing Properties of Agn (n = 1–4) Cluster Doped GeSe for CH4 and CO Gases in Oil-Immersed Transformer
by Aijuan Dong, Meiling Sun and Yingang Gui
Nanomaterials 2022, 12(23), 4203; https://doi.org/10.3390/nano12234203 - 26 Nov 2022
Cited by 4 | Viewed by 1285
Abstract
The adsorption mechanism of CO and CH4 on GeSe, modified with the most stable 1–4 Ag-atom clusters, is studied with the help of density functional theory. Adsorption distance, adsorption energy, total density of states (TDOS), projected density of states (PDOS), and molecular [...] Read more.
The adsorption mechanism of CO and CH4 on GeSe, modified with the most stable 1–4 Ag-atom clusters, is studied with the help of density functional theory. Adsorption distance, adsorption energy, total density of states (TDOS), projected density of states (PDOS), and molecular orbital theory were all used to analyze the results. CO was found to chemisorb exothermically on GeSe, independent of Ag cluster size, with Ag4-GeSe representing the optimum choice for CO gas sensors. CH4, in contrast, was found to chemisorb on Ag-GeSe and Ag2-GeSe and to physisorb on Ag3-GeSe and Ag4-GeSe. Here, Ag GeSe was found to be the optimum choice for CH4 gas sensors. Overall, our calculations suggest that GeSe modified by Ag clusters of different sizes could be used to advantage to detect CO and CH4 gas in ambient air. Full article
(This article belongs to the Special Issue Nanomaterials for Sensors, Actuators and Environmental Applications)
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