Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Transparent, Flexible, Conformal Capacitive Pressure Sensors with Nanoparticles

Authors
Kim, HyeohnKim, GwangmookKim, TaehoonLee, SangwooKang, DonyoungHwang, Min-SooChae, YoungcheolKang, ShinillLee, HyungsukPark, Hong-GyuShim, Wooyoung
Issue Date
22-2월-2018
Publisher
WILEY-V C H VERLAG GMBH
Keywords
conformal sensors; flexible sensors; health monitoring; large-scale touch interfaces; nanoparticle-roughened dielectrics
Citation
SMALL, v.14, no.8
Indexed
SCIE
SCOPUS
Journal Title
SMALL
Volume
14
Number
8
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/77323
DOI
10.1002/smll.201703432
ISSN
1613-6810
Abstract
The fundamental challenge in designing transparent pressure sensors is the ideal combination of high optical transparency and high pressure sensitivity. Satisfying these competing demands is commonly achieved by a compromise between the transparency and usage of a patterned dielectric surface, which increases pressure sensitivity, but decreases transparency. Herein, a design strategy for fabricating high-transparency and high-sensitivity capacitive pressure sensors is proposed, which relies on the multiple states of nanoparticle dispersity resulting in enhanced surface roughness and light transmittance. We utilize two nanoparticle dispersion states on a surface: (i) homogeneous dispersion, where each nanoparticle (approximate to 500 nm) with a size comparable to the visible light wavelength has low light scattering; and (ii) heterogeneous dispersion, where aggregated nanoparticles form a micrometer-sized feature, increasing pressure sensitivity. This approach is experimentally verified using a nanoparticle-dispersed polymer composite, which has high pressure sensitivity (1.0 kPa(-1)), and demonstrates excellent transparency (>95%). We demonstrate that the integration of nanoparticle-dispersed capacitor elements into an array readily yields a real-time pressure monitoring application and a fully functional touch device capable of acting as a pressure sensor-based input device, thereby opening up new avenues to establish processing techniques that are effective on the nanoscale yet applicable to macroscopic processing.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Science > Department of Physics > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Altmetrics

Total Views & Downloads

BROWSE