Study of LAAS Sensitivity Using Back Surface Electric Field

Kosugi, Keita; Uchida, Hidekazu

doi:10.1541/ieejsmas.141.14

Cited by 1 publication

(1 citation statement)

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“…Light-activated electrochemistry has been applied to two-dimensional interrogation ("electrochemical reading") [48,50] as well as electrochemical deposition on the surface ("electrochemical writing") [50]. When combined with an amperometric sensing principle, it can potentially be applied to a device that should be called a light-addressable amperometric sensor (LAAS) [20,21,[52][53][54][55] or a light-addressable electrochemical sensor (LAE sensor) [8,[56][57][58][59].…”

Section: Tion Especially In Its Application To Biosensing Based On Am...mentioning

confidence: 99%

Field-Effect Sensors Combined with the Scanned Light Pulse Technique: From Artificial Olfactory Images to Chemical Imaging Technologies

Yoshinobu,

Miyamoto,

Wagner

et al. 2024

Chemosensors

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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.

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