Sensor Nanomaterials and Technologies

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: closed (1 March 2021) | Viewed by 13063

Special Issue Editor


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Guest Editor
Department of Physics and Engineering, Moldova State University, Str. Mateevici 60, MD-2009 Chisinau, Moldova
Interests: material sciences; metal oxides; thin films; deposition; characterisation; gas sensors; surface science; thermoelectrical conversion
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Special Issue Information

Dear Colleagues,

The past few decades can rightly be called the beginning of the sensory age, when a variety of sensors began to be introduced into all areas of human activity from industrial process control, medicine, agriculture, and environmental monitoring to the development of various security systems. It is clear that the implementation of these plans required the development of sensors capable of measuring a wide variety of parameters that have both a physical and chemical nature. However, experience has shown that traditional approaches to the development of sensors, especially chemical sensors, gas sensors, or biosensors, require high sensitivity and selectivity of the response, and do not always ensure the achievement of these requirements.

This Special Issue will demonstrate how advances in nanotechnology allow for the introduction of nanomaterials as sensing elements into existing sensor technologies, which opens up new possibilities for the development of sensors with improved parameters. Therefore, we invite researchers with an interest in this area and with results that can contribute to the further development of nanotechnologies and nanomaterial-based sensors to participate in this Special Issue. Original research papers, short communications, and reviews are all welcome. Both theoretical and experimental works will be considered, provided that they offer new insights or represent substantial advancements in this field.

Nanomaterials can be used in all types of sensors. This means that electrochemical, chemical, environmental, biological, and various physical sensors are all of interest. Of course, these sensors can have different sensing platforms, from conventional to micro-hotplates, flexible substrates, photonic crystals, optical nanofibers, and various micro(nano)resonators. Keep also in mind that you are not limited regarding the choice of technologies and materials used in the manufacture of sensors. Polymer nanoparticles, nanostructured metal oxides, semiconductor quantum dots, metal nanoparticles, carbon-based nanomaterials (black carbon, carbon nanotubes, and graphene), metal–organic frameworks (MOFs), zeolites, silica, and many various nanocomposites prepared using different methods can be included in the list of nanomaterials discussed in your articles. In this Special Issue, we would like to highlight the latest advances in the development of these nanomaterials and the optimization of their properties. The incorporation of nanomaterials in a sensing element requires not only special methods of synthesis, deposition, formation, localization, manipulation, and proper characterization techniques but also effective functionalization of nanomaterials—one of the key factors necessary for the development of a reliable sensor. This means that potential topics of can cover a wide range of research fields related to the fundamental and applied aspects of sensor nanomaterials, from their synthesis and functionalization to their novel functionalities and various sensor applications.

Prof. Dr. Ghenadii Korotcenkov
Guest Editor

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Keywords

  • nanomaterial preparation
  • nanomaterial functionalization
  • nanomaterial characterization
  • chemical sensors
  • biosensors
  • nanosensors
  • gas sensors
  • physical sensors
  • sensor fabrication
  • sensor applications

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Published Papers (2 papers)

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Review

32 pages, 5105 KiB  
Review
Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges
by Artem Chizhov, Marina Rumyantseva and Alexander Gaskov
Nanomaterials 2021, 11(4), 892; https://doi.org/10.3390/nano11040892 - 31 Mar 2021
Cited by 51 | Viewed by 4678
Abstract
The review deals with issues related to the principle of operation of resistive semiconductor gas sensors and the use of light activation instead of thermal heating when detecting gases. Information on the photoelectric and optical properties of nanocrystalline oxides SnO2, ZnO, [...] Read more.
The review deals with issues related to the principle of operation of resistive semiconductor gas sensors and the use of light activation instead of thermal heating when detecting gases. Information on the photoelectric and optical properties of nanocrystalline oxides SnO2, ZnO, In2O3, and WO3, which are the most widely used sensitive materials for semiconductor gas sensors, is presented. The activation of the gas sensitivity of semiconductor materials by both UV and visible light is considered. When activated by UV light, the typical approaches for creating materials are (i) the use of individual metal oxides, (ii) chemical modification with nanoparticles of noble metals and their oxides, (iii) and the creation of nanocomposite materials based on metal oxides. In the case of visible light activation, the approaches used to enhance the photo- and gas sensitivity of wide-gap metal oxides are (i) doping; (ii) spectral sensitization using dyes, narrow-gap semiconductor particles, and quantum dots; and (iii) addition of plasmon nanoparticles. Next, approaches to the description of the mechanism of the sensor response of semiconductor sensors under the action of light are considered. Full article
(This article belongs to the Special Issue Sensor Nanomaterials and Technologies)
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62 pages, 17727 KiB  
Review
Current Trends in Nanomaterials for Metal Oxide-Based Conductometric Gas Sensors: Advantages and Limitations. Part 1: 1D and 2D Nanostructures
by Ghenadii Korotcenkov
Nanomaterials 2020, 10(7), 1392; https://doi.org/10.3390/nano10071392 - 17 Jul 2020
Cited by 90 | Viewed by 7818
Abstract
This article discusses the main uses of 1D and 2D nanomaterials in the development of conductometric gas sensors based on metal oxides. It is shown that, along with the advantages of these materials, which can improve the parameters of gas sensors, there are [...] Read more.
This article discusses the main uses of 1D and 2D nanomaterials in the development of conductometric gas sensors based on metal oxides. It is shown that, along with the advantages of these materials, which can improve the parameters of gas sensors, there are a number of disadvantages that significantly limit their use in the development of devices designed for the sensor market. Full article
(This article belongs to the Special Issue Sensor Nanomaterials and Technologies)
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