Gel for sensor and sensor

Patent metadata

Field	Value
Publication number	US-2016338643-A1
Application number	US-201615146172-A
Country	US
Kind code	A1
Filing date	May 4, 2016
Priority date	May 21, 2015
Publication date	Nov 24, 2016
Grant date	—

Abstract

A sensor includes a gel for a sensor and an electrode. The gel for a sensor includes a stimulus-responsive gel, first particles which are contained in the stimulus-responsive gel and are constituted by a material containing an electrically conductive substance, and second particles which are contained in the stimulus-responsive gel and contribute to structural coloration. It is preferred that when the electrical resistivity of the electrically conductive substance is represented by R1 (Ω·m) and the electrical resistivity of the constituent material of the second particles is represented by R2 (Ω·m), the following relationship is satisfied: 1×10 12 ≦R2/R1≦1×10 23 . It is preferred that when the refractive index of the constituent material of the first particles is represented by n1 and the refractive index of the constituent material of the second particles is represented by n2, the following relationship is satisfied: −0.8≦n2−n1≦1.5.

First claim

What is claimed is:

1 . A gel for a sensor, comprising:
a stimulus-responsive gel; first particles which are contained in the stimulus-responsive gel and are constituted by a material containing an electrically conductive substance; and second particles which are contained in the stimulus-responsive gel and contribute to structural coloration.

2 . The gel for a sensor according to claim 1 , wherein when the electrical resistivity of the electrically conductive substance is represented by R1 (Ω·m) and the electrical resistivity of the constituent material of the second particles is represented by R2 (Ω·m), the following relationship is satisfied: 1×10 12 ≦R2/R1≦1×10 23 .

3 . The gel for a sensor according to claim 1 , wherein when the electrical resistivity of the electrically conductive substance is 1.0×10 −3 Ω·m or less.

4 . The gel for a sensor according to claim 1 , wherein the electrically conductive substance is constituted by a material containing one 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.

5 . The gel for a sensor according to claim 1 , wherein when the refractive index of the constituent material of the first particles is represented by n1 and the refractive index of the constituent material of the second particles is represented by n2, the following relationship is satisfied: −0.8≦n2−n≦1.5.

6 . The gel for a sensor according to claim 1 , wherein the average particle diameter of the second particles is 50 nm or more and 1000 nm or less.

7 . The gel for a sensor according to claim 1 , wherein the content of the first 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 50 parts by volume or less.

8 . The gel for a sensor according to claim 1 , wherein the content of the second 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 50 parts by volume or less.

9 . 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.

10 . The gel for a sensor according to claim 9 , wherein in the recessed portion, the first particles are exposed on the surface.

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

12 . A sensor, comprising:
the gel for a sensor according to claim 2 ; and an electrode.

13 . A sensor, comprising:
the gel for a sensor according to claim 3 ; and an electrode.

14 . A sensor, comprising:
the gel for a sensor according to claim 4 ; and an electrode.

15 . A sensor, comprising:
the gel for a sensor according to claim 5 ; and an electrode.

16 . A sensor, comprising:
the gel for a sensor according to claim 6 ; and an electrode.

17 . A sensor, comprising:
the gel for a sensor according to claim 7 ; and an electrode.

18 . A sensor, comprising:
the gel for a sensor according to claim 8 ; and an electrode.

19 . A sensor, comprising:
the gel for a sensor according to claim 9 ; and an electrode.

20 . A sensor, comprising:
the gel for a sensor according to claim 10 ; and an electrode.

Assignees

• Seiko Epson Corp

Inventors

• Yoshioka Satomi
• Yagi Hiroshi

Classifications

• A61B5/6802 Primary

  Sensor mounted on worn items · CPC title

• G01N27/04

  by investigating resistance · CPC title

• A61B5/053

  Measuring electrical impedance or conductance of a portion of the body · CPC title

• A61B2562/14

  Coupling media or elements to improve sensor contact with skin or tissue · CPC title

• A61B5/14517

  for sweat · CPC title