Fiber based sensor and the fabricating method thereof

Patent metadata

Field	Value
Publication number	US-9469529-B2
Application number	US-201514665539-A
Country	US
Kind code	B2
Filing date	Mar 23, 2015
Priority date	Oct 16, 2014
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

The present invention provides a fiber base sensor and the fabricating method thereof. More specifically, one of the main goals of the present invention is to solve the problem existing in the prior art of the failure of forming a plurality of nano-particles on the surface of the fiber base sensor evenly by utilizing self-assembly process with the nano-imprint process. Furthermore, the another goal of the present invention is to provide detail parameters required in the said nano-imprinting process for avoiding the efficiency drop caused by over-embedding the nano-particles into the fiber based sensor.

First claim

What is claimed is:

1. A fiber based sensor fabricating method, comprising the following steps of:
preparing a mold, a work surface of the mold having a nano-particles layer, wherein the nano-particles layer is formed on the work surface through a self-assembly process;
preparing a work table;
preparing a fiber material, comprising a substratum and a polymeric material layer disposed on the surface of the work table;
putting the fiber material on the work table;
adjusting the temperature of the mold to an operational temperature;
adjusting the distance between the mold and work table for allowing the nano-particles layer to be contacted with the upper surface of the fiber material under a predetermined pressure;
cooling the mold and the fiber material; and
adjusting the distance between the mold and work table to keep the mold away from the work table for transferring the nano-particles layer to the polymeric material layer of the fiber material for the fabrication of the fiber base sensor.

2. The fiber based sensor fabricating method of claim 1 , wherein the mold is quartz substrate, silicon substrate or glass substrate, and the fiber material is a paper fiber or a fabric fiber.

3. The fiber based sensor fabricating method of claim 1 , wherein the nano-particles layer comprises a plurality of nano-gold particles.

4. The fiber based sensor fabricating method of claim 1 , wherein the diameter of the nano-gold particle is between 20 to 100 nanometers.

5. The fiber based sensor fabricating method of claim 1 , wherein the operational temperature is between 25 to 85 degrees.

6. The fiber based sensor fabricating method of claim 5 , wherein the predetermined pressure is between 20 to 60 kilograms per square centimeter.

7. The fiber based sensor fabricating method of claim 1 , wherein the polymeric material layer comprises polyvinyl alcohol (PVA) and aluminum oxide.

8. A fiber based sensor, comprising:
a fiber material, comprising a polymeric material layer; and
a nano-particles layer, embedded on the fiber material, wherein the nano-particles layer comprises a plurality of nano-particles, the nano-particles layer is formed on the polymeric material layer through the method mentioned in claim 1 , the diameters of the plurality of the nano-particles is between 20 to 100 nanometers, and the part of the plurality of nano-particles ambushed under the polymeric material layer is smaller than 70% of the diameter of the nano-particles.

9. The fiber based sensor of claim 8 , wherein the nano-particles layer is a single layer nano-particles array, and the nano-particles is nano-gold particles.

10. The fiber based sensor of claim 8 , wherein the layer of the polymeric material comprises polyvinyl alcohol (PVA) and further comprising aluminum oxide.

Assignees

• Nat Univ Tsing Hua

Inventors

• Wan De-Hui
• Tseng Shih-Yu
• Yang Chung-Yao
• Lin Szu-Ting
• Cheng Chao-Min

Classifications

• B29C70/64 Primary

  the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force · CPC title

• B29C70/025

  with particular filler · CPC title

• B29K2029/04

  PVOH, i.e. polyvinyl alcohol (B29K2031/04 takes precedence) · CPC title

• B05D2401/32

  applied as powders · CPC title

• B29C70/00

  Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts · CPC title