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Micromachines
Special Issues
Innovations in Biosensors, Gas Sensors and Supercapacitors
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Innovations in Biosensors, Gas Sensors and Supercapacitors

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "B：Biology and Biomedicine".

Deadline for manuscript submissions: 15 November 2025 | Viewed by 1080

Special Issue Editor

Prof. Dr. Prashant Shivaji Shewale

E-Mail Website
Guest Editor
KU-KIST Graduate School of Converging Science and Technology, KU-KIST R&D Center, Korea University, Seoul 136-701, Republic of Korea
Interests: supercapacitors; integration of energy harvester–storage–consumption units; self-powered sensors; nanomaterials; metal oxides; thin films
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue, entitled “Innovations in Biosensors, Gas Sensors and Supercapacitors”, aims to focus on the latest innovations in microsystem technologies that are transforming glucose monitoring, gas detection, and supercapacitors. This Special Issue invites submissions that investigate novel nanomaterials and nanocomposites with enhanced electrochemical properties, improved surface areas and porosity, and superior charge storage capabilities. Special emphasis is placed on advancements in gas sensors utilizing various sensing mechanisms, electrochemical glucose sensors, and supercapacitor energy storage applications. By showcasing interdisciplinary research and novel fabrication techniques, this Special Issue aims to provide comprehensive insights into the design and optimization of microsystems. The goal is to highlight their significant impact on healthcare, environmental monitoring, and renewable energy solutions. Researchers are encouraged to submit their work on these advanced materials and technologies, contributing to advancements in electrochemical sensors and energy storage systems. This Special Issue will underscore the potential of cutting-edge microsystem innovations to drive progress in critical fields and foster the development of sustainable technology.

Prof. Dr. Prashant Shivaji Shewale
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. Micromachines 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 2100 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

  • microsystems
  • electrochemical sensors
  • energy storage
  • glucose monitoring
  • gas detection
  • supercapacitors
  • miniaturization
  • fabrication techniques
  • sensor technology
  • biosensors

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Published Papers (1 paper)

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Research

11 pages, 1807 KiB  
Communication
Rapid and Ultrasensitive Sensor for Point-of-Use Detection of Perfluorooctanoic Acid Based on Molecular Imprinted Polymer and AC Electrothermal Effect
by Niloufar Amin, Jiangang Chen, Ngoc Susie Nguyen, Qiang He, John Schwartz and Jie Jayne Wu
Micromachines 2025, 16(3), 283; https://doi.org/10.3390/mi16030283 - 28 Feb 2025
Viewed by 690
Abstract
Perfluorooctanoic acid (PFOA) is one of the most persistent and bioaccumulative water contaminants. Sensitive, rapid, and in-field analysis is needed to ensure safe water supplies. Here, we present a single step (one shot) and rapid sensor capable of measuring PFOA at the sub-quadrillion [...] Read more.
Perfluorooctanoic acid (PFOA) is one of the most persistent and bioaccumulative water contaminants. Sensitive, rapid, and in-field analysis is needed to ensure safe water supplies. Here, we present a single step (one shot) and rapid sensor capable of measuring PFOA at the sub-quadrillion (ppq) level, 4.5 × 10−4 ppq, within 10 s. This innovative sensor employs a synergistic combination of a molecularly imprinted polymer (MIP)-modified gold interdigitated microelectrode chip and AC electrothermal effects (ACETs), which enhance detection sensitivity by facilitating the accelerated movement of PFOA molecules towards specific recognition sites on the sensing surface. The application of a predetermined AC signal induces microfluidic enrichment and results in concentration-dependent changes in interfacial capacitance during the binding process. This enables real-time, rapid quantification with exceptional sensitivity. We achieved a linear dynamic range spanning from 0.4 to 40 fg/L (4 × 10−7–4 × 10−5 ppt) and demonstrated good selectivity (~1:100) against other PFAS compounds, including perfluorooctanoic acid (PFOS), in PBS buffer. The sensor’s straightforward operation, cost-effectiveness, elimination of the need for external redox probes, compact design, and functionality in relatively resistant environmental matrices position it as an outstanding candidate for deployment in practical applications. Full article
(This article belongs to the Special Issue Innovations in Biosensors, Gas Sensors and Supercapacitors)
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