Field-effect sensors combined with the scanned light pulse technique: from artificial olfactory images to chemical imaging technologies
- The artificial olfactory image was proposed by Lundström et al. in 1991 as a new strategy for an electronic nose system which generated a two-dimensional mapping to be interpreted as a fingerprint of the detected gas species. The potential distribution generated by the catalytic metals integrated into a semiconductor field-effect structure was read as a photocurrent signal generated by scanning light pulses. The impact of the proposed technology spread beyond gas sensing, inspiring the development of various imaging modalities based on the light addressing of field-effect structures to obtain spatial maps of pH distribution, ions, molecules, and impedance, and these modalities have been applied in both biological and non-biological systems. These light-addressing technologies have been further developed to realize the position control of a faradaic current on the electrode surface for localized electrochemical reactions and amperometric measurements, as well as the actuation of liquids in microfluidic devices.
Author: | Tatsuo Yoshinobu, Ko-ichiro Miyamoto, Torsten WagnerORCiD, Michael Josef SchöningORCiD |
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DOI: | https://doi.org/10.3390/chemosensors12020020 |
ISSN: | 2227-9040 |
Parent Title (English): | Chemosensors |
Publisher: | MDPI |
Place of publication: | Basel |
Document Type: | Article |
Language: | English |
Year of Completion: | 2024 |
Date of first Publication: | 2024/01/28 |
Tag: | MOS; artificial olfactory image; catalytic metal; electronic nose; field-effect structure; gas sensor; light-addressing technologies; metal-oxide-semiconductor structure; scanned light pulse technique; visualization |
Volume: | 12 |
Issue: | 2 |
Length: | Artikel 20 |
Note: | This article belongs to the Special Issue "An Exciting Journey of Chemical Sensors and Biosensors: A Theme Issue in Honor of Professor Ingemar Lundström" Corresponding author: Tatsuo Yoshinobu, Michael J. Schöning |
Link: | https://doi.org/10.3390/chemosensors12020020 |
Zugriffsart: | weltweit |
Institutes: | FH Aachen / Fachbereich Medizintechnik und Technomathematik |
FH Aachen / INB - Institut für Nano- und Biotechnologien | |
open_access (DINI-Set): | open_access |
collections: | Verlag / MDPI |
Open Access / Gold | |
Licence (German): | ![]() |