sensors-logo

Journal Browser

Journal Browser

Electrochemical Sensors and Biosensors: Materials, Methods and Applications—2nd Edition

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

Deadline for manuscript submissions: 25 February 2027 | Viewed by 427

Editor

School of Materials Science and Engineering, Central South University, Changsha 410083, China
Interests: electrochemical (bio)sensors; electroanalysis; diamond electrochemistry; carbonaceous materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Following the success of our Sensors Special Issue, entitled “Electrochemical Sensors and Biosensors: Materials, Methods and Applications”, we would like to once again invite our colleagues from across the world to contribute their expertise, insights and findings in the form of original research articles and reviews for the second edition of the Special Issue, entitled “Electrochemical Sensors and Biosensors: Materials, Methods and Applications—2nd Edition”.

Electrochemical sensors and biosensors are analytical devices that convert chemical information into electrical signals, which can be easily measured and quantified. Widely used in various fields, including environmental monitoring, medical diagnostics, food safety and clinical chemistry, these sensors offer high sensitivity, specificity and relatively low cost. The performance of electrochemical sensors and biosensors depends on the choice of sensing materials. Commonly used materials include conductive polymers, metal nanoparticles and carbon-based substances such as graphene and glassy carbon. Electrochemical sensors can be categorized into amperometric, potentiometric, voltammetric, conductometric and impedimetric, depending on the measured electrical parameters. Furthermore, electrochemiluminescence (ECL) has emerged as a powerful and highly sensitive analytical technique that combines the advantages of electrochemical and luminescent methods.

Ongoing research aims to improve electrochemical sensors and biosensors’ sensitivity, selectivity and stability. Additionally, there is growing interest in developing wearable and implantable devices for continuous health monitoring. This Special Issue focuses on the exciting field of electrochemical sensors and biosensors and aims to highlight their importance in modern analytical chemistry and their potential for future technological advancements. In this 2nd edition, we particularly welcome and invite submissions exploring advanced detection methodologies, with special emphasis on electrochemiluminescence and novel electrochemical immunoassays, which are pushing the boundaries of rapid biomarker detection and point-of-care diagnostics.

We also strongly encourage contributions on point-of-care testing (POCT) technologies, such as lateral flow assay platforms utilizing fluorescence spectroscopy detection, which play a pivotal role in decentralized and rapid diagnostics.

Dr. Zejun Deng
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • nanodiamonds
  • electrochemistry
  • electrochemical sensors
  • electrochemical biosensors
  • electroanalysis
  • wearable sensors
  • amperometry
  • impedimetric
  • voltammetry
  • electrochemiluminescence
  • electrochemical immunoassay

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Related Special Issue

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

17 pages, 7332 KB  
Article
Electrothermal Synthesis of Cell-Imprinted Polymer Coatings on Metallic Microwires for Bacterial Capture
by Alireza Zabihihesari, Arezoo Khalili and Pouya Rezai
Sensors 2026, 26(17), 5324; https://doi.org/10.3390/s26175324 (registering DOI) - 22 Aug 2026
Abstract
This study presents an electrothermal coating approach for synthesizing cell-imprinted polymers (CIPs) on metallic microwires through localized resistive heating-induced polymerization. Imprinted polymers (IPs) are robust, cost-effective synthetic affinity materials widely used in sensing applications. However, conventional fabrication methods, including bulk and suspension polymerization, [...] Read more.
This study presents an electrothermal coating approach for synthesizing cell-imprinted polymers (CIPs) on metallic microwires through localized resistive heating-induced polymerization. Imprinted polymers (IPs) are robust, cost-effective synthetic affinity materials widely used in sensing applications. However, conventional fabrication methods, including bulk and suspension polymerization, often lack spatial control, producing non-specific polymerization, heterogeneous coatings, and reduced sensor reproducibility. Electrochemical polymerization provides improved spatial control but requires specialized instrumentation and restricts monomer selection. Here, applying direct current (DC) to metallic microwires immersed in a prepolymer solution generated localized Joule heating, enabling controlled in situ polymerization and uniform coatings while minimizing undesired bulk polymerization. By optimizing the applied current and polymerization time, CIP coatings with tunable thicknesses were fabricated on gold-coated microwires. Under optimized conditions, ~6 µm thick coatings were imprinted using Salmonella templates. Scanning electron microscopy revealed bacteria-shaped cavities consistent with template removal and the formation of imprinted cavities. Rebinding experiments demonstrated enhanced bacterial capture, with CIP-coated microwires achieving ~70% capture efficiency, compared to 22% for bare microwires and 33% for non-imprinted polymer (NIP) controls. These results support the effectiveness of the proposed method for localized polymerization and demonstrate the enhanced capture of the template species by CIP-coated microwires relative to bare microwires and NIP-coated controls. Full article
Show Figures

Figure 1

24 pages, 11016 KB  
Article
CNT Network Impacts on Electrolyte-Gated Carbon Nanotube Field-Effect Transistors pH Sensors
by Alireza Zare, Danica Fontein, Colm Carraher and Natalie O. V. Plank
Sensors 2026, 26(16), 5100; https://doi.org/10.3390/s26165100 - 12 Aug 2026
Viewed by 282
Abstract
Carbon nanotube field-effect transistors (CNT-FETs) are promising platforms for electrolyte-gated sensing, although the influence of CNT network density on device performance for pH measurements remains unknown. In this work, CNT-FETs with controlled network densities were fabricated from aqueous CNT solutions by varying the [...] Read more.
Carbon nanotube field-effect transistors (CNT-FETs) are promising platforms for electrolyte-gated sensing, although the influence of CNT network density on device performance for pH measurements remains unknown. In this work, CNT-FETs with controlled network densities were fabricated from aqueous CNT solutions by varying the CNT concentration and the deposition time. Increasing CNT density improved conductivity, reducing channel resistance from the GΩ range to ~100 kΩ and increasing the on-current of electrolyte-gated devices from ~10 nA to ~1 µA. The fabricated CNT-FETs operating in a liquid-gated configuration exhibited on/off ratios ranging between 103 and 105. The minimum subthreshold swing achieved by the CNT-FETs was 77.5 mV/dec for devices employing a low-density CNT network, compared with 105 mV/dec for those incorporating a high-density CNT network. The high-density CNT networks also exhibited reduced electrostatic gate coupling due to charge screening effects. pH measurements in 1XPBS showed that low-density networks achieved the highest sensitivity of 8.9%/pH, whereas high-density networks showed lower sensitivity of 2.1%/pH, despite producing the largest absolute current response of ~70 nA. Medium-density networks provided the best balance between sensitivity, noise, and signal stability. These findings demonstrate that CNT network density is a critical parameter for optimizing electrolyte-gated CNT-FET pH sensors. Full article
Show Figures

Figure 1

Back to TopTop