期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 207, 期 -, 页码 926-932出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.09.002
关键词
Chemical imaging sensor; Light-addressable potentiometric sensor; LAPS; Chemical sensor; Semiconductor; Field effect
The light-addressable potentiometric sensor (LAPS) is an electrochemical sensor with a field-effect structure to detect the variation of the Nernst potential at its sensor surface, the measured area on which is defined by illumination. Thanks to this light-addressability, the LAPS can be applied to chemical imaging sensor systems, which can visualize the two-dimensional distribution of a particular target ion on the sensor surface. Chemical imaging sensor systems are expected to be useful for analysis of reaction and diffusion in various electrochemical and biological samples. Recent developments of LAPS-based chemical imaging sensor systems, in terms of the spatial resolution, measurement speed, image quality, miniaturization and integration with microfluidic devices, are summarized and discussed. (C) 2014 Elsevier B.V. All rights reserved.
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