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Potentiometric Sensors
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Potentiometric Sensors

A special issue of Sensors (ISSN 1424-8220).

Deadline for manuscript submissions: closed (31 August 2017) | Viewed by 14382

Special Issue Editor

Prof. Andrzej Lewenstam

E-Mail Website
Guest Editor
Åbo Akademi University, Finland and AGH University of Science and Technology, Poland
Interests: sensor technology; chemical and bio-sensors; electroanalysis and electrochemistry; modeling of sensors’ response mechanism
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Potentiometric sensors are important tools in different fields of electroanalysis. Measurement of pH, blood electrolytes, biomedical markers or industrial gases performed by potentiometric sensors proves the significance of sensor technology. New parameters, wide measurement ranges, high selectivity, fast response, low cost promote potentiometric sensors and bio-sensors as a tool of choice in modern analysis. Owing to the invention of solid-contacts the present sensors can be made maintenance-free and miniaturized. Undoubtedly, sensor technology offers today new perspectives in science, technology and applications.
This Special Issue aims to highlight advances in the development of potentiometric chemical and biosensors. Topics include, but are not limited, to:
1. Indicator electrodes and biosensors
2. Reference electrodes
3. Application of potentiometric sensors and biosensors
4. Electrodes’ mechanism and response theory

Prof. Dr. Andrzej Lewenstam
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

  • sensor technology
  • response theory
  • electroanalysis
  • clinical measurements

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Published Papers (2 papers)

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Research

4032 KiB  
Article
Fabrication and Characterization of a Stabilized Thin Film Ag/AgCl Reference Electrode Modified with Self-Assembled Monolayer of Alkane Thiol Chains for Rapid Biosensing Applications
by Tanzilur Rahman and Takanori Ichiki
Sensors 2017, 17(10), 2326; https://doi.org/10.3390/s17102326 - 13 Oct 2017
Cited by 12 | Viewed by 7781
Abstract
The fabrication of miniaturized electrical biosensing devices can enable the rapid on-chip detection of biomarkers such as miRNA molecules, which is highly important in early-stage cancer detection. The challenge in realizing such devices remains in the miniaturization of the reference electrodes, which is [...] Read more.
The fabrication of miniaturized electrical biosensing devices can enable the rapid on-chip detection of biomarkers such as miRNA molecules, which is highly important in early-stage cancer detection. The challenge in realizing such devices remains in the miniaturization of the reference electrodes, which is an integral part of electrical detection. Here, we report on a novel thin film Ag/AgCl reference electrode (RE) that has been fabricated on top of a Au-sputtered glass surface, which was coated with a self-assembled monolayer (SAM) of 6-mercepto-1-hexanol (MCH). The electrode showed very little measurement deviation (−1.5 mv) from a commercial Ag/AgCl reference electrode and exhibited a potential drift of only ± 0.2 mV/h. In addition, the integration of this SAM-modified microfabricated thin film RE enabled the rapid detection (<30 min) of miRNA (let-7a). The electrode can be integrated seamlessly into a microfluidic device, allowing the highly stable and fast measurement of surface potential and is expected to be very useful for the development of miniature electrical biosensors. Full article
(This article belongs to the Special Issue Potentiometric Sensors)
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2650 KiB  
Article
Selective Sensing of Gas Mixture via a Temperature Modulation Approach: New Strategy for Potentiometric Gas Sensor Obtaining Satisfactory Discriminating Features
by Fu-an Li, Han Jin, Jinxia Wang, Jie Zou and Jiawen Jian
Sensors 2017, 17(3), 573; https://doi.org/10.3390/s17030573 - 12 Mar 2017
Cited by 10 | Viewed by 5595
Abstract
A new strategy to discriminate four types of hazardous gases is proposed in this research. Through modulating the operating temperature and the processing response signal with a pattern recognition algorithm, a gas sensor consisting of a single sensing electrode, i.e., ZnO/In2O [...] Read more.
A new strategy to discriminate four types of hazardous gases is proposed in this research. Through modulating the operating temperature and the processing response signal with a pattern recognition algorithm, a gas sensor consisting of a single sensing electrode, i.e., ZnO/In2O3 composite, is designed to differentiate NO2, NH3, C3H6, CO within the level of 50–400 ppm. Results indicate that with adding 15 wt.% ZnO to In2O3, the sensor fabricated at 900 °C shows optimal sensing characteristics in detecting all the studied gases. Moreover, with the aid of the principle component analysis (PCA) algorithm, the sensor operating in the temperature modulation mode demonstrates acceptable discrimination features. The satisfactory discrimination features disclose the future that it is possible to differentiate gas mixture efficiently through operating a single electrode sensor at temperature modulation mode. Full article
(This article belongs to the Special Issue Potentiometric Sensors)
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