Dear Colleagues,

The COVID-19 pandemic, which broke out worldwide in early 2020, not only severely damaged the global economy, but also disrupted everyday life. Fast diagnostic technology with cost-effective features is crucial to prevent these enormous damages. However, the common diagnostics methods, such as the enzyme-linked immunosorbent assay (ELISA) and polymerase chain reactions (PCRs), are not suitable to effectively contain the spread of infectious diseases, because they require sample delivery to the laboratory facilities, well-trained operators and expensive laboratory equipment. Field-effect transistor (FET)-based biosensors have received considerable attention as one of the powerful diagnostic platforms due to label-free and real-time detection, high sensitivity, high selectivity and compact size. FET-based biosensors have been widely utilized from basic science to clinical tests. Various nanostructures over the past decade have produced significant advances in FET-based biosensor technology, resulting in highly sensitive sensor devices capable of successfully detecting down to a concentration of a few pg/mL. However, the sensitivity still needs to be greatly enhanced for the detection of significant analytes such as antigens and viruses, which are deadly or pathogenic even in ultra-low quantities

This Special Issue aims to collect outstanding research articles on recent advances in FET-based biosensors. The scope of this Special Issue covers, but is not limited to, new detection schemes, novel structure and materials, and methods for improving sensing performance such as sensitivity and selectivity, and novel applications. If the research is related to biosensing, there are no major limitations. Both original research articles and review articles describing the current state of the art in FET-based biosensors are invited.

Dr. Kihyun Kim
Dr. Meyya Meyyappan
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. Biosensors 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.

• biosensors
• field-effect transistors
• BioFETs
• electrolyte-gated transistor
• flexible biosensor
• biomarkers
• surface functionalization
• diagnostics
• point-of-care
• clinical applications