Cited by 158Analytical Chemistry and SensorsElectrochemical sensors and biosensorsAdvanced biosensing and bioanalysis techniques

Extended gate field-effect-transistor for sensing cortisol stress hormone

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Sheibani, Shokoofeh, Capua, Luca, Kamaei, Sadegh, Akbari, Sayedeh Shirin Afyouni, Zhang, Junrui, Guerin, Hoel, Ionescu, Adrian M.·2021·Communications Materials

Abstract

Cortisol is a hormone released in response to stress and is a major glucocorticoid produced by adrenal glands. Here, we report a wearable sensory electronic chip using label-free detection, based on a platinum/graphene aptamer extended gate field effect transistor (EG-FET) for the recognition of cortisol in biological buffers within the Debye screening length. The device shows promising experimental features for real-time monitoring of the circadian rhythm of cortisol in human sweat. We report a hysteresis-free EG-FET with a voltage sensitivity of the order of 14 mV/decade and current sensitivity up to 80% over the four decades of cortisol concentration. The detection limit is 0.2 nM over a wide range, between 1 nM and 10 µM, of cortisol concentrations in physiological fluid, with negligible drift over time and high selectivity. The dynamic range fully covers those in human sweat. We propose a comprehensive analysis and a unified, predictive analytical mapping of current sensitivity in all regimes of operation.

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Authors
Sheibani, S., Capua, L., Kamaei, S., Akbari, S. S. A., Zhang, J., Guerin, H., & Ionescu, A. M.
Affiliations
  • University of Tehran (IR)
  • École Polytechnique Fédérale de Lausanne (CH)
Corresponding author
Ionescu, Adrian M.
Venue
Communications Materials
Published
2021-01-19
Volume
2
Issue
1
Pages
10-10
ISSN
2662-4443 (ISSN-L)
OpenAlex
W3123066175
Cited by
158
References
61
Citations by year
2026: 17 · 2025: 30 · 2024: 40 · 2023: 28 · 2022: 28 · 2021: 15
FWCI
13.06
Type
journal article
Language
en
Open access
Locations
  • Communications Materials (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
  • H2020 European Research Council (695459)
Topics
  • Physical Sciences › Chemical Engineering › Bioengineering › Analytical Chemistry and Sensors
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Advanced biosensing and bioanalysis techniques
Keywords
extended-gate field-effect transistor, wearable biosensors, label-free detection, human sweat, circadian rhythm, Debye screening, current sensitivity, detection limit

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