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Bio & Chem Sensors: Young Scientists in the Americas
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Bio & Chem Sensors: Young Scientists in the Americas

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

Deadline for manuscript submissions: closed (31 August 2025) | Viewed by 1633

Editor

Prof. Dr. Evgeny Katz

E-Mail Website
Guest Editor
Department of Chemistry & Biochemistry, Clarkson University, Potsdam, NY 13699-5810, USA
Interests: bioelectronics; bionanotechnology; bioelectrochemistry; biosensors; self-assembling enzymes; monolayers; modified electrodes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue highlights the innovative contributions of emerging young scientists across the Americas—spanning Canada, the United States, and Latin America—in the field of bio and chemical sensors. As these young scientists push the boundaries of sensor technology, their work promises to advance the frontiers of analytical and diagnostic applications. This edition brings together cutting-edge research, from novel sensor materials and fabrication techniques to advanced data analysis methods. We invite submissions from young scientists in the Americas who are leading advancements in sensor technologies across various fields, including chemistry, biology, material science, and engineering. The focus is on showcasing fresh and impactful research driven by emerging talents in the region.

The present Special Issue will cover all research areas related to biosensor devices, biosensoric procedures, and various biosensor applications, specifically emphasizing biomedical applications and environmental monitoring. The Special Issue will be composed of review-style articles, which can be comprehensive literature reviews or reviews based on the author’s research activities (like concept papers). The Special Issue is planned for later conversion to a book on the same topic.

Prof. Dr. Evgeny Katz
Guest Editor

Ilya Sterin
Guest Editor Assistant
email: steriniv@clarkson.edu
Department of Chemistry and Biochemistry
Clarkson University, Potsdam, NY, USA

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

  • biosensors
  • implantable or wearable devices
  • lab-on-a-chip technology
  • optical biosensors
  • plasmonic biosensors
  • biosensors for cell analysis
  • electrochemical biosensors
  • enzymatic biosensors
  • graphene-based biosensors
  • aptamer biosensors

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Published Papers (1 paper)

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Research

11 pages, 1586 KB  
Article
Toward Detection of Inert PFAS: Single/Few-CNT Devices for Sensing PFOA
by Collins Dormena, Obed Appiah and Taher Ghomian
Sensors 2025, 25(24), 7653; https://doi.org/10.3390/s25247653 - 17 Dec 2025
Viewed by 952
Abstract
Electron transport in carbon nanotubes (CNTs) is highly sensitive to interactions with their local environment, making them promising candidates for sensing applications. Specifically, this could allow detection of electrochemically and optically inert compounds that typically require complex and expensive analytical techniques. In this [...] Read more.
Electron transport in carbon nanotubes (CNTs) is highly sensitive to interactions with their local environment, making them promising candidates for sensing applications. Specifically, this could allow detection of electrochemically and optically inert compounds that typically require complex and expensive analytical techniques. In this study, we examine how single-walled carbon nanotubes (SWCNTs) respond to perfluorooctanoic acid (PFOA), a common per- and polyfluoroalkyl substance (PFAS). To improve sensitivity, we employ a single/few-CNT device setup where a small number of SWCNTs were aligned across nanogaps between gold electrodes with the dielectrophoresis method. This structure addresses the challenges of large CNT networks, such as inter-CNT interactions, drift, and degradation, resulting in improved stability for practical applications. Results showed that device resistance drops as a function of PFOA concentrations. Additionally, positive gate voltage enhances sensitivity by attracting negatively charged PFOA molecules to the SWCNT surface. Specifically, we report that the sensitivity increases by nearly an order of magnitude under a 0.3 V gate bias. Impedance spectroscopy reveals distinct amplitude and phase signatures, enabling selective detection of PFOA among different analytes. Applying gate voltage further enhances sensor selectivity, highlighting the potential of gated SWCNT devices for accurate and selective environmental monitoring. The device demonstrates promising performance as a robust platform for creating single/few-CNT nanosensors for detecting electrochemically and optically inert substances like PFAS molecules. Full article
(This article belongs to the Special Issue Bio & Chem Sensors: Young Scientists in the Americas)
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