Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HIGHLY SENSITIVE AND FLEXIBLE STRAIN SENSOR BASED ON DIRECT PRINTING OF MIXTURE OF METAL NANOPARTICLES AND CARBON NANOTUBES, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/197000
Kind Code:
A1
Abstract:
Disclosed are a method for manufacturing a flexible strain sensor and a flexible strain sensor manufactured thereby. A predetermined conductive wiring pattern is directly printed on one surface of a flexible substrate by high-speed spraying, and then covered with a flexible cover and bonded, thus sandwiching the conductive wiring pattern therebetween. A composite nanomaterial prepared by mixing metal nanoparticles and carbon nanotubes is excited by aerodynamically controlling pumping timing and sprayed in an aerosolized state onto the surface of a flexible substrate via spray nozzles. A sprayed printing raw material mixture collides with the surface of the flexible substrate to form cracks in the surface thereof, and carbon nanotubes permeate into the cracks to be mechanically locked with the flexible substrate and fixed therein. Metal nanoparticles and carbon nanotubes are deposited thereon to a predetermined width and height, and thus the conductive wiring pattern of a strain sensor is directly printed. This direct printing may be performed in a low-pressure atmosphere and at room temperature without using a solvent, a resin, or the like. After the direct printing, a separate chemical post-treatment or heat treatment is not required.

Inventors:
AHN SUNGHOON (KR)
MIN SOOHONG (KR)
LEE GILYONG (KR)
Application Number:
PCT/KR2019/009756
Publication Date:
October 01, 2020
Filing Date:
August 06, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SEOUL NAT UNIV R&DB FOUNDATION (KR)
International Classes:
G01L1/22; B05B13/02; B05D1/02; B05D7/24; C08K3/04; C08K3/08; C08L83/04; D03D1/00
Foreign References:
KR20150074623A2015-07-02
KR20140090345A2014-07-17
KR20180130036A2018-12-06
Other References:
MIN SOO-HONG; LEE GIL-YONG; AHN SUNG-HOON: "Direct printing of highly sensitive, stretchable, and du rable strain sensor based on silver nanoparticles/multi-walled carbon nanotu bes composites", COMPOSITES, vol. 161, December 2018 (2018-12-01) - 15 March 2019 (2019-03-15), pages 395 - 401, XP085591674
WOO HO KUN ET AL.: "Nanoparticle based wearable sensor", CERAMIST, vol. 22, no. 1, 5 March 2019 (2019-03-05), pages 4 - 16
Attorney, Agent or Firm:
PARK, Young-woo (KR)
Download PDF: