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Hattori, Toshiaki

Affiliation Department of Electrical and Electronic Information Engineering
Title Associate Professor
Fields of Research Electroanalytical Chemistry
Degree Doctor of Science (Hokkaido University)
Academic Societies The Chemical Society of Japan / American Chemical Society / The Japan Society for Analytical Chemistry / The Society of Polymer Science, Japan / Japanese Society for Chitin and Chitosan / The Electrochemical Society of Japan/ Japan Association of Chemic
E-mail thattori@ee
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Laboratory website URL
Researcher information URL(researchmap) Researcher information


Our laboratory researches micro electrochemical devices and array type ion image sensors, and investigates the application of polyelectrolytes for electrochemical devices. The aim and concept is to fabricate a bio-friendly system for chemical observation of cells and tissues

Theme1:Development of Micro Electrochemical Devices to Release Ions

An electrochemical system observes living cells by a chemical stimulation.

Living action of cells and tissues is due to a conversion and/or a transfer of chemical substances. In order to analyze the action of a tissues, controlled techniques is required; only a cell is stimulated in local, and then the change of chemical substances by the stimulation transfer is monitored. We are developing micro ion-release electrochemical devices to the chemical stimuli. The electrochemical ion-release device is an important tool to stimulate a cell chemically without other effects.


electrochemical device, chemical stimulation,bio-friendly system

Theme2:Development of Electrochemical Ion Image Sensor

The ion image sensor monitors the concentration change of biogenic amines released from mast cells by a chemical stimulation. 3D images show each sensor response around a mast cell stimulated.

Ion selective electrodes (ISE) and semiconductor ion sensors (ISFET/CCD ion sensor) can measure a specific ion immediately. We have developed ISEs for polyelectrolytes and non-ionic chemicals that had been regarded as difficulty of its detection from Nernst equation. Recently, using a CCD-type ion image sensor that was developed by Professor Sawada in TUT, we are developing chemical imaging of several metal ions and biologically-important organic ions. The image sensors can monitor living cells and tissues non-invasively.


Ion sensor, ion imaging, chemical observation, living cells and tissue

Theme3:Application of polyelectrolytes

A polyelectrolyte ternary complex releases calcium ion by electrolysis.

Polyelectrolytes act as substances with unique functions. We had developed analytical methods for various synthetic and natural polyelectrolytes (chitosan, heparin, chondroitin sulfate, and polyhexanide hydrochloride, etc.) using titration, electrochemical analysis (voltammetry and potentiometry), and capillary electrophoresis. In addition the reaction of polyelectrolyte with proteins has been analyzed. Now, we develop electrochemical devices using polyelectrolytes.


Polyelectrolyte, colloidal titration, electrochemical analysis

Title of class

Physics for Electronics (M42630020) / Advanced Electronic Materials 1 (D52030010)

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