Chemical
Chemical proportion sensors: oxygen sensors, ion-selective electrodes, pH glass electrodes, redox electrodes, and carbon monoxide detectors.
What is Chemical Imaging Sensor ?
by Iwasaki Laboratory
The chemical imaging sensor is a new tool for visualizing the distribution of pH, concentration of specific ions and redox potential in electrolytic specimens.
The chemical imaging sensor is based on the principle of the Light-Addressable Potentiometric Sensor (LAPS). It consists of an Electrolyte-Insulator-Semiconductor (EIS) structure. The width of the depletion layer in the semiconductor is dependent on the surface charge of the insulating layer, which is a map of the distribution of chemical species in the electrolytic specimen. The rear surface of the Si substrate is scanned with a modulated laser beam, and chemical images can be obtained by measuring the amplitude of the AC photocurrent as a function of the position.
Chemical Imaging Sensor Family
pH-Imaging Sensor
Enzyme Chemical Imaging Sensor
Redox Potential Imaging Sensor
Examples
Detection of microorganisms
Observation of chemical waves (in preparation)
Observation of neurons