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Micro- and Nanostructures for Sensing Applications
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Micro- and Nanostructures for Sensing Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: closed (15 April 2023) | Viewed by 12683

Special Issue Editor

Dr. Abdelhafed Taleb

E-Mail Website
Guest Editor
Institut de Recherche de Chimie Paris, Chimie ParisTech, PSL University—CNRS, 75005 Paris, France
Interests: nanosensors; smart nanomaterials; lab on a chip; multidetection

Special Issue Information

Dear Colleagues,

Over the past few years, micro‐ and nanosensors have been the focus of significant research interest from scientists in academia and industry alike. Functional micro-/nanomaterials play an important role in the development of new platforms with new properties or enhanced existing properties. Platform design based on nanoparticles as building units or nanostructured surface appears as a new approach with an unprecedented opportunity to prepare sensors with the desired properties for targeted detections. The aim of this Special Issue is to discuss the last progresses and challenges in the Micro- and Nanosensors fields.

The Special Issue focuses on the design, fabrication, and applications for micro- and nanostructured sensors. All contributions providing added value to the field of micro- and nanosensors or an update with a critical overview of the state of the art in the field are welcome. Selected topics include but are not limited to the following:

  • Novel micro-/nano-architecture for sensing;
  • Nanomaterials (nanowires, nanodots, 2D materials, hierarchical materials) and devices;
  • Micro and nano-defects in materials (semiconductors, metal, and insulators);
  • Surfaces and interfaces of thin films;
  • Multidetection platform;
  • Smart nanomaterial for sensing, including hybrid materials;
  • New approaches for sensing, including molecularly imprinted polymer sensors;
  • Deep learning for conflicting properties and optimized sensor performance.

Please feel free to contact us with any suggestions that you would like to discuss and to be included in this Special Issue.

Dr. Abdelhafed Taleb
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. Sensors 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 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

  • hierarchical structures
  • multi detection
  • hybrid nanomaterials
  • environment
  • health care
  • lab on a chip

Published Papers (5 papers)

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Research

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10 pages, 3826 KiB  
Article
Ginkgo Leaf Inspired Fabrication of Micro/Nanostructures and Demonstration of Flexible Enzyme-Free Glucose Sensors
by Shulan Jiang, Yueqi Chen and Yong Peng
Sensors 2022, 22(19), 7507; https://doi.org/10.3390/s22197507 - 03 Oct 2022
Cited by 5 | Viewed by 1412
Abstract
Flexible enzyme-free glucose sensors have attracted widespread attention due to their importance and potential applications in clinical diagnosis, flexible wearable devices, and implanted devices in vivo. At present, there are still major problems in fabricating flexible enzyme-free glucose sensors with low detection limits, [...] Read more.
Flexible enzyme-free glucose sensors have attracted widespread attention due to their importance and potential applications in clinical diagnosis, flexible wearable devices, and implanted devices in vivo. At present, there are still major problems in fabricating flexible enzyme-free glucose sensors with low detection limits, high stability, and high sensitivity at low cost, hindering their practical application. Here, we report a facile strategy for the fabrication of flexible non-enzymatic glucose sensors using ginkgo leaf as a template. NiO film and PEDOT:PSS composite film were deposited on the surface of the ginkgo leaf induced micro-nano hierarchical structure as a sensitive layer and a conductive layer, respectively. The as-prepared, flexible, enzyme-free glucose sensor exhibited excellent electrochemical performance toward glucose oxidation with a sensitivity of 0.7413 mA·mM−1/cm−2, an operating voltage of 0.55 V, a detection limit of 0.329 μM, and good anti-interference. Due to the simple fabrication process and performance reliability, the novel flexible enzyme-free glucose sensor is an attractive candidate for next generation wearable and implantable non-enzymatic glucose diagnostic devices. Full article
(This article belongs to the Special Issue Micro- and Nanostructures for Sensing Applications)
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17 pages, 5125 KiB  
Article
A Micropowered Chemoresistive Sensor Based on a Thin Alumina Nanoporous Membrane and SnxBikMoyOz Nanocomposite
by Gennady Gorokh, Anna Zakhlebayeva, Igor Taratyn, Andrei Lozovenko, Valery Zhylinski, Michael Iji, Vladimir Fedosenko and Abdelhafed Taleb
Sensors 2022, 22(10), 3640; https://doi.org/10.3390/s22103640 - 10 May 2022
Cited by 3 | Viewed by 1469
Abstract
This work presents and discusses the design of an efficient gas sensor, as well as the technological process of its fabrication. The optimal dimensions of the different sensor elements including their deformation were determined considering the geometric modeling and the calculated moduli of [...] Read more.
This work presents and discusses the design of an efficient gas sensor, as well as the technological process of its fabrication. The optimal dimensions of the different sensor elements including their deformation were determined considering the geometric modeling and the calculated moduli of the elasticity and thermal conductivity coefficients. Multicomponent SnxBikMoyOz thin films were prepared by ionic layering on an anodic alumina membrane and were used as gas-sensitive layers in the sensor design. The resistance of the SnxBikMoyOz nanostructured film at temperatures up to 150 °C exceeded 106 Ohm but decreased to 104 Ohm at 550 °C in air. The sensitivity of the SnxBikMoyOz composite to concentrations of 5 and 40 ppm H2 at 250 °C (10 mW) was determined to be 0.22 and 0.40, respectively. Full article
(This article belongs to the Special Issue Micro- and Nanostructures for Sensing Applications)
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19 pages, 3733 KiB  
Article
Electrochemical Properties of Phytosynthesized Gold Nanoparticles for Electrosensing
by Natalia Yu. Stozhko, Maria A. Bukharinova, Ekaterina I. Khamzina and Aleksey V. Tarasov
Sensors 2022, 22(1), 311; https://doi.org/10.3390/s22010311 - 31 Dec 2021
Cited by 8 | Viewed by 2084
Abstract
Gold nanoparticles are widely used in electrosensing. The current trend is to phytosynthesize gold nanoparticles (phyto-AuNPs) on the basis of the “green” chemistry approach. Phyto-AuNPs are biologically and catalytically active, stable and biocompatible, which opens up broad perspectives in a variety of applications, [...] Read more.
Gold nanoparticles are widely used in electrosensing. The current trend is to phytosynthesize gold nanoparticles (phyto-AuNPs) on the basis of the “green” chemistry approach. Phyto-AuNPs are biologically and catalytically active, stable and biocompatible, which opens up broad perspectives in a variety of applications, including tactile, wearable (bio)sensors. However, the electrochemistry of phytosynthesized nanoparticles is not sufficiently studied. This work offers a comprehensive study of the electrochemical activity of phyto-AuNPs depending on the synthesis conditions. It was found that with an increase in the aliquot of the plant extract, its antioxidant activity (AOA) and pH, the electrochemical activity of phyto-AuNPs grows, which is reflected in the peak potential decrease and an increase in the peak current of phyto-AuNPs electrooxidation. It has been shown that AOA is an important parameter for obtaining phyto-AuNPs with desired properties. Electrodes modified with phyto-AuNPs have demonstrated better analytical characteristics than electrodes with citrate AuNPs in detecting uric and ascorbic acids under model conditions. The data about the phyto-AuNPs’ electrochemistry may be useful for creating highly effective epidermal sensors with good biocompatibility. Full article
(This article belongs to the Special Issue Micro- and Nanostructures for Sensing Applications)
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14 pages, 4878 KiB  
Article
Spatially Ordered Matrix of Nanostructured Tin–Tungsten Oxides Nanocomposites Formed by Ionic Layer Deposition for Gas Sensing
by Gennady Gorokh, Natalia Bogomazova, Abdelhafed Taleb, Valery Zhylinski, Timur Galkovsky, Anna Zakhlebayeva, Andrei Lozovenko, Michael Iji, Vladimir Fedosenko and Valeri Tolstoy
Sensors 2021, 21(12), 4169; https://doi.org/10.3390/s21124169 - 17 Jun 2021
Cited by 4 | Viewed by 1820
Abstract
The process of layer-by-layer ionic deposition of tin-tungsten oxide films on smooth silicon substrates and nanoporous anodic alumina matrices has been studied. To achieve the film deposition, solutions containing cationic SnF2 or SnCl2 and anionic Na2WO4 or (NH [...] Read more.
The process of layer-by-layer ionic deposition of tin-tungsten oxide films on smooth silicon substrates and nanoporous anodic alumina matrices has been studied. To achieve the film deposition, solutions containing cationic SnF2 or SnCl2 and anionic Na2WO4 or (NH4)2O·WO3 precursors have been used. The effect of the solution compositions on the films deposition rates, morphology, composition, and properties was investigated. Possible mechanisms of tin-tungsten oxide films deposition into the pores and on the surface of anodic alumina are discussed. The electro-physical and gas-sensitive properties of nanostructured SnxWyOz films have been investigated. The prepared nanocomposites exhibit stable semiconductor properties characterized by high resistance and low temperature coefficient of electrical resistance of about 1.6 × 10−3 K−1. The sensitivity of the SnxWyOz films to 2 and 10 ppm concentrations of ammonia at 523 K was 0.35 and 1.17, respectively. At concentrations of 1 and 2 ppm of nitrogen dioxide, the sensitivity was 0.48 and 1.4, respectively, at a temperature of 473 K. At the temperature of 573 K, the sensitivity of 1.3 was obtained for 100 ppm of ethanol. The prepared nanostructured tin-tungsten oxide films showed promising gas-sensitivity, which makes them a good candidate for the manufacturing of gas sensors with high sensitivity and low power consumption. Full article
(This article belongs to the Special Issue Micro- and Nanostructures for Sensing Applications)
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Review

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59 pages, 2616 KiB  
Review
Electrical and Electrochemical Sensors Based on Carbon Nanotubes for the Monitoring of Chemicals in Water—A Review
by Gookbin Cho, Sawsen Azzouzi, Gaël Zucchi and Bérengère Lebental
Sensors 2022, 22(1), 218; https://doi.org/10.3390/s22010218 - 29 Dec 2021
Cited by 30 | Viewed by 5032
Abstract
Carbon nanotubes (CNTs) combine high electrical conductivity with high surface area and chemical stability, which makes them very promising for chemical sensing. While water quality monitoring has particularly strong societal and environmental impacts, a lot of critical sensing needs remain unmet by commercial [...] Read more.
Carbon nanotubes (CNTs) combine high electrical conductivity with high surface area and chemical stability, which makes them very promising for chemical sensing. While water quality monitoring has particularly strong societal and environmental impacts, a lot of critical sensing needs remain unmet by commercial technologies. In the present review, we show across 20 water monitoring analytes and 90 references that carbon nanotube-based electrochemical sensors, chemistors and field-effect transistors (chemFET) can meet these needs. A set of 126 additional references provide context and supporting information. After introducing water quality monitoring challenges, the general operation and fabrication principles of CNT water quality sensors are summarized. They are sorted by target analytes (pH, micronutrients and metal ions, nitrogen, hardness, dissolved oxygen, disinfectants, sulfur and miscellaneous) and compared in terms of performances (limit of detection, sensitivity and detection range) and functionalization strategies. For each analyte, the references with best performances are discussed. Overall, the most frequently investigated analytes are H+ (pH) and lead (with 18% of references each), then cadmium (14%) and nitrite (11%). Micronutrients and toxic metals cover 40% of all references. Electrochemical sensors (73%) have been more investigated than chemistors (14%) or FETs (12%). Limits of detection in the ppt range have been reached, for instance Cu(II) detection with a liquid-gated chemFET using SWCNT functionalized with peptide-enhanced polyaniline or Pb(II) detection with stripping voltammetry using MWCNT functionalized with ionic liquid-dithizone based bucky-gel. The large majority of reports address functionalized CNTs (82%) instead of pristine or carboxyl-functionalized CNTs. For analytes where comparison is possible, FET-based and electrochemical transduction yield better performances than chemistors (Cu(II), Hg(II), Ca(II), H2O2); non-functionalized CNTs may yield better performances than functionalized ones (Zn(II), pH and chlorine). Full article
(This article belongs to the Special Issue Micro- and Nanostructures for Sensing Applications)
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