Special Issue "Optical Chemical Sensors and Spectroscopy"

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Optical Chemical Sensors".

Deadline for manuscript submissions: 30 November 2022 | Viewed by 3375

Special Issue Editors

Dr. Sergey Y. Yurish
E-Mail Website
Guest Editor
International Frequency Sensor Association (IFSA), Barcelona, Spain
Interests: smart sensors; intelligent sensors; frequency-to-digital converters; frequency measurements
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Gou-Jen Wang
E-Mail Website
Guest Editor
Graduate Institute of Biomedical Engineering, National Chung-Hsing University, Taichung 40227, Taiwan
Interests: chemical sensors; biosensors; immunosensors; nanomaterials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The field of optical chemical sensors has been a growing research area over the last decades, finding increasing application in industry, environment, monitoring, medicine, biomedicine, and chemical analysis. The recent developments in this area are driven by such factors as the availability of low-cost, miniature optoelectronic light sources and frequency-output detectors, the need for multianalyte array-based sensors (particularly in the area of biosensing), advances in microfluidics and imaging technology, and the trend toward sensor networks.  

This Special Issue “Optical Chemical Sensors and Spectroscopy” will include extended papers from both annual IFSA conferences, 7th International Conference on Sensors and Electronic Instrumentation Advances (SEIA' 2021) and 4th International Conference on Optics, Photonics and Lasers (OPAL' 2021), but we also strongly encourage researchers unable to participate in the conferences to submit articles for this call. Authors of selected high-quality papers from the conference will be invited to submit extended versions of their original papers (50% extensions of the contents of the conference paper) and other contributions.

Topics of interest for submission include, but are not limited to, the following:

  • Optical chemical sensors;
  • Optical transduction;
  • Spectroscopic sensing;
  • Imaging;
  • Optical absorption;
  • Luminescence-based sensors;
  • Fluorescence-based sensors;
  • Interferometric sensors;
  • Fiber-optic sensor platforms;
  • Diode laser sensing systems;
  • Sol–gel-materials-based sensors.

These topics directly fit the scope of MDPI’s open access journal Chemosensors.

Dr. Sergey Y. Yurish
Prof. Dr. Gou-Jen Wang
Guest Editors

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. Chemosensors is an international peer-reviewed open access monthly 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 1800 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

  • optical chemical sensors
  • optical transduction
  • spectroscopy
  • imaging

Published Papers (4 papers)

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Research

Article
Photonics of Viburnum opulus L. Extracts in Microemulsions with Oxygen and Gold Nanoparticles
Chemosensors 2022, 10(4), 130; https://doi.org/10.3390/chemosensors10040130 - 30 Mar 2022
Viewed by 471
Abstract
In this paper, the optical properties of viburnum extract flavonoids in the visible region of the spectrum were investigated and their use as a potential photosensitizer of singlet oxygen for photodynamic therapy was evaluated. The presence of long-lived excited states in the extract [...] Read more.
In this paper, the optical properties of viburnum extract flavonoids in the visible region of the spectrum were investigated and their use as a potential photosensitizer of singlet oxygen for photodynamic therapy was evaluated. The presence of long-lived excited states in the extract molecules was established by spectral methods and time-resolved spectroscopy methods and the dependences of the absorption capacity and luminescence intensity of the extract molecules on the concentrations of oxygen and ablative nanoparticles of the gold in the reverse micelles of AOT (sodium dioctyl sulfosuccinate) were established. The plasmonic enhancement of the luminescence of the extract molecules and the processes of their complexation with oxygen were also established. Furthermore, the rate constants of the processes of conversion of exciting energy in complexes were determined. Full article
(This article belongs to the Special Issue Optical Chemical Sensors and Spectroscopy)
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Article
A Comparative Study of Aqueous and Non-Aqueous Solvents to Be Used in Low-Temperature Serial Molecular–Electronic Sensors
Chemosensors 2022, 10(3), 111; https://doi.org/10.3390/chemosensors10030111 - 12 Mar 2022
Viewed by 644
Abstract
This paper presents the experimental results of studying the samples of the electrochemical sensors of motion parameters on the base of Molecular Electronics Technology (MET). The sensors with microelectromechanical (MEMS) electrode assembly use electrolytes based on aqueous and non-aqueous solutions of potassium and [...] Read more.
This paper presents the experimental results of studying the samples of the electrochemical sensors of motion parameters on the base of Molecular Electronics Technology (MET). The sensors with microelectromechanical (MEMS) electrode assembly use electrolytes based on aqueous and non-aqueous solutions of potassium and lithium iodides. Electrolyte solutions contain impurities of ionic liquids and alcohols to achieve stable low-temperature operation and acceptable technical parameters of serial devices. The dependence of the general sensitivity and the shape of the amplitude-frequency characteristic on temperature have been studied. For the marginally acceptable samples, which had an acceptable temperature dependence of the conversion coefficient and low activation energies for the diffusion coefficient, the level of self-noise was found. The activation energy of the electrolyte diffusion coefficient was determined based on the analysis of the dependence of the background current on temperature. A conclusion was made regarding the possible prospects for using the studied solutions and components for operation in serial devices. Full article
(This article belongs to the Special Issue Optical Chemical Sensors and Spectroscopy)
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Article
Femtosecond Direct Laser Writing of Silver Clusters in Phosphate Glasses for X-ray Spatially-Resolved Dosimetry
Chemosensors 2022, 10(3), 110; https://doi.org/10.3390/chemosensors10030110 - 11 Mar 2022
Viewed by 652
Abstract
Radio-photoluminescence in silver-doped phosphate glasses has been extensively used for X-ray dosimetry. In this paper, we present the potential of silver clusters for X-ray spatially resolved dosimetry. Those clusters are generated in phosphate glasses containing a high concentration of silver oxide by femtosecond [...] Read more.
Radio-photoluminescence in silver-doped phosphate glasses has been extensively used for X-ray dosimetry. In this paper, we present the potential of silver clusters for X-ray spatially resolved dosimetry. Those clusters are generated in phosphate glasses containing a high concentration of silver oxide by femtosecond direct laser writing technique. Two phosphate glasses of different compositions were investigated. First, the spectroscopic properties of the pristine glasses were studied after X-ray irradiation at different doses to assess their dosimetry potential. Second, the impact of X-rays on the three-dimensional inscribed silver clusters has been analyzed using several spectroscopies methods. Our analysis highlights the resilience of embedded silver clusters acting as local probes of the deposited doses. We demonstrate that these inscribed glasses can define the range and sensitivity of X-ray doses and consider the realization of spatially-resolved dosimeters. Full article
(This article belongs to the Special Issue Optical Chemical Sensors and Spectroscopy)
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Article
Cost-Effective Foam-Based Colorimetric Sensor for Roadside Testing of Alcohol in Undiluted Saliva
Chemosensors 2021, 9(12), 334; https://doi.org/10.3390/chemosensors9120334 - 28 Nov 2021
Viewed by 955
Abstract
A novel foam-based colorimetric alcohol sensor was developed for the detection of alcohol in saliva. Detection was based on the color change of a potassium dichromate-sulfuric acid solution absorbed by melamine foam. In the presence of alcohol, the orange colorimetric sensor changed color [...] Read more.
A novel foam-based colorimetric alcohol sensor was developed for the detection of alcohol in saliva. Detection was based on the color change of a potassium dichromate-sulfuric acid solution absorbed by melamine foam. In the presence of alcohol, the orange colorimetric sensor changed color to brown, green and, ultimately, blue, depending on the concentration of alcohol in the sample. The response of the proposed sensor toward alcohol was linear from 0.10 to 2.5% v/v. The limit of detection was 0.03% v/v. Alcohol concentration could be determined using the naked eye in the range of 0.00 to 10% v/v. The developed alcohol sensor presented good operational accuracy (RSD = 0.30–1.90%, n = 8) and good stability for 21 days when stored at 25 °C and 75 days when stored at 4 °C. The results of alcohol detection with the developed sensor showed no significant difference from the results of spectrophotometric detection at a 95% confidence level (p > 0.05). The sensor was easy to use, small, inexpensive and portable, enabling drivers to accurately measure their own blood alcohol level and providing convenient speed in forensic applications. Full article
(This article belongs to the Special Issue Optical Chemical Sensors and Spectroscopy)
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