Gel for sensor and sensor

Patent metadata

Field	Value
Publication number	US-2018024083-A1
Application number	US-201615548000-A
Country	US
Kind code	A1
Filing date	Jan 13, 2016
Priority date	Feb 12, 2015
Publication date	Jan 25, 2018
Grant date	—

Abstract

A gel for a sensor characterized by including a stimulus-responsive gel which expands or contracts in response to a given stimulus, and an electrically conductive substance which is included in the stimulus-responsive gel.

First claim

1 . A gel for a sensor, characterized by comprising:
a stimulus-responsive gel which expands or contracts in response to a given stimulus; and an electrically conductive substance which is included in the stimulus-responsive gel.

2 . The gel for a sensor according to claim 1 , wherein as the electrically conductive substance, electrically conductive particles which are dispersed in the stimulus-responsive gel are included.

3 . The gel for a sensor according to claim 2 , wherein the electrically conductive particles are particles subjected to a surface treatment for improving the dispersibility in the stimulus-responsive gel.

4 . The gel for a sensor according to claim 2 , wherein the average particle diameter of the electrically conductive particles is 10 nm or more and 1000 μm or less.

5 . The gel for a sensor according to claim 2 , wherein the content of the electrically conductive particles with respect to 100 parts by volume of the stimulus-responsive gel when the stimulus-responsive gel is in an expanded state is 0.1 parts by volume or more and 65 parts by volume or less.

6 . The gel for a sensor according to claim 1 , wherein the gel for a sensor is provided with a recessed portion in a region coming into contact with an electrode.

7 . The gel for a sensor according to claim 6 , wherein in the recessed portion, the electrically conductive substance and the electrode are in contact with each other.

8 . The gel for a sensor according to claim 1 , wherein the electrical resistivity of the electrically conductive substance is 1.0×10 −4 Ω·m or less.

9 . The gel for a sensor according to claim 1 , wherein the electrically conductive substance is constituted by a material containing one member or two or more members selected from the group consisting of a metal material, an electrically conductive metal oxide, a carbon material, and an electrically conductive polymer material.

10 . A sensor, characterized by comprising:
a stimulus-responsive gel; an electrically conductive substance which is included in the stimulus-responsive gel; and an electrode.

11 . A sensor, characterized by comprising:
the gel for a sensor according to claim 1 ; and an electrode.

Assignees

• Seiko Epson Corp

Inventors

• Yoshioka Satomi
• Yagi Hiroshi

Classifications

• G01N33/48707

  by electrical means (G01N33/49, G01N33/493 take precedence) · CPC title

• A61B5/1468

  using chemical or electrochemical methods, e.g. by polarographic means · CPC title

• G01N27/12 Primary

  of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid {, for detecting components in the fluid} · CPC title

• G01N27/126 Primary

  comprising organic polymers · CPC title

• A61B5/0537

  Measuring body composition by impedance, e.g. tissue hydration or fat content · CPC title