State-of-the-Art and Advances in Electrochemical Sensors/Biosensors

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Electrochemical Devices and Sensors".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 3603

Special Issue Editors

MiCRA Biodiagnostics Technology Gateway and Health, Engineering & Material Sciences (HEMS) Hub, Technological University Dublin (TU Dublin), D24 FKT9 Dublin, Ireland
Interests: electrochemical sensors & biosensors; agri-food & diagnostic microbiology; immunoassay development; biomarkers detection and point-of-care devices; nanomaterials and antimicrobial resistance (AMR)
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Guest Editor
Pesticide Registration Division, Department of Agriculture, Food & the Marin, Backweston Laboratory Campus, W23 VW2C Celbridge, Ireland
Interests: electrochemical biosensor development & applications; analytical and environmental chemistry; environmental toxicant detection

Special Issue Information

Dear Colleagues,

Electrochemical methods and electroanalytical techniques are promising next-generation analytical tools for various sensing and biosensing applications and offer many advantages over conventional analytical techniques. Great attention has been paid to the development and advancement of electrochemical sensors/biosensors due to their exceptional characteristics and remarkable features such as rapid response, sensitivity and low detection limits, selectivity, simplicity and ease of use, cost-effectiveness, compatibility for miniaturization, and low sample volume requirements. The versatility of these tools ensures their use in a broad biological and chemical analytes detection.

Electrochemical sensors convert the redox reactions on the electrode surface to electronically readable signals that show changes in current, potential, and conductivity. The fundamental principle of electrochemical biosensors is the recognition incident between the immobilized biological sensing element (e.g., enzymes, antibodies, whole cells, aptamers, etc.) and target analyte that results in alterations in signal (e.g., current, potential, and impedance). The transduction of a biological or chemical signal into an electrical signal can be achieved by using voltammetry, amperometry, potentiometry, or electrochemical impedance spectroscopy (EIS), etc.

Electrochemical sensors and biosensors hold great promise to meet future needs for a diverse range of applications, including environmental and agri-food monitoring, food contaminants and safety, bioanalysis, clinical diagnostics, and monitoring of industrial processes.

This Special Issue aims to collect the latest developments and advancements in electrochemical sensors/biosensors and their applications to identify new scientific frontiers in this space. Original research papers, reviews, mini-reviews, and perspective articles are all welcome.

Dr. Baljit Singh
Dr. Tony O Hara
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 2700 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

  • electrochemical sensors/biosensors and diagnostics
  • advanced materials and nanomaterials in sensor/biosensor design
  • miniaturization approaches in electrochemical sensor/biosensors
  • screen-printed sensors
  • electrode and sensor fabrication
  • redox mediators
  • microfluidics
  • nano-biosensors
  • lab-on-a-chip and point of care testing
  • environmental monitoring
  • agri-food, food-contaminants and food-safety monitoring
  • industrial processes monitoring
  • electrochemical analysis and bioanalysis
  • electroanalytical techniques

Published Papers (1 paper)

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Review

33 pages, 4839 KiB  
Review
Enzymatic Electrochemical Biosensors for Neurotransmitters Detection: Recent Achievements and Trends
by Zina Fredj, Baljit Singh, Mohamed Bahri, Peiwu Qin and Mohamad Sawan
Chemosensors 2023, 11(7), 388; https://doi.org/10.3390/chemosensors11070388 - 12 Jul 2023
Cited by 8 | Viewed by 2891
Abstract
Neurotransmitters (NTs) play a crucial role in regulating the behavioral and physiological functions of the nervous system. Imbalances in the concentrations of NT have been directly linked to various neurological diseases (e.g., Parkinson’s, Huntington’s, and Alzheimer’s disease), in addition to multiple psychotic disorders [...] Read more.
Neurotransmitters (NTs) play a crucial role in regulating the behavioral and physiological functions of the nervous system. Imbalances in the concentrations of NT have been directly linked to various neurological diseases (e.g., Parkinson’s, Huntington’s, and Alzheimer’s disease), in addition to multiple psychotic disorders such as schizophrenia, depression, dementia, and other neurodegenerative disorders. Hence, the rapid and real-time monitoring of the NTs is of utmost importance in comprehending neurological functions and identifying disorders. Among different sensing techniques, electrochemical biosensors have garnered significant interest due to their ability to deliver fast results, compatibility for miniaturization and portability, high sensitivity, and good controllability. Furthermore, the utilization of enzymes as recognition elements in biosensing design has garnered renewed attention due to their unique advantages of catalytic biorecognition coupled with simultaneous signal amplification. This review paper primarily focuses on covering the recent advances in enzymatic electrochemical biosensors for the detection of NTs, encompassing the importance of electrochemical sensors, electrode materials, and electroanalytical techniques. Moreover, we shed light on the applications of enzyme-based biosensors for NTs detection in complex matrices and in vivo monitoring. Despite the numerous advantages of enzymatic biosensors, there are still challenges that need to be addressed, which are thoroughly discussed in this paper. Finally, this review also presents an outlook on future perspectives and opportunities for the development of enzyme-based electrochemical biosensors for NTs detection. Full article
(This article belongs to the Special Issue State-of-the-Art and Advances in Electrochemical Sensors/Biosensors)
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