Open AccessTransparent and flexible force sensor array based on optical waveguide
Author(s) -
Young-Sung Kim,
Suntak Park,
Seung Koo Park,
Sungryul Yun,
KiUk Kyung,
Kyung Sun
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.014486
Subject(s) - cladding (metalworking) , optics , optical force , refractive index , materials science , waveguide , light intensity , optoelectronics , contact force , total internal reflection , optical tweezers , physics , quantum mechanics , metallurgy
This paper suggests a force sensor array measuring contact force based on intensity change of light transmitted throughout optical waveguide. For transparency and flexibility of the sensor, two soft prepolymers with different refractive index have been developed. The optical waveguide consists of two cladding layers and a core layer. The top cladding layer is designed to allow light scattering at the specific area in response to finger contact. The force sensor shows a distinct tendency that output intensity decreases with input force and measurement range is from 0 to -13.2 dB.