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Metal Deposition on a Self‐Generated Microfibril Network to Fabricate Stretchable Tactile Sensors Providing Analog Position Information
Author(s) -
Moon Sungmin,
Park Hyung Keun,
Song Jun Hyuk,
Cho Sunghwan,
Kim Jong Chan,
Kim Junghoon,
Hwang Heesun,
Kim Hyoung Seop,
Jeong Unyong
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201801408
Subject(s) - materials science , microfibril , nanotechnology , position (finance) , stretchable electronics , deposition (geology) , smart material , metal , tactile sensor , composite material , metallurgy , chemical engineering , electronics , business , electrical engineering , computer science , paleontology , robot , sediment , artificial intelligence , engineering , biology , cellulose , finance
Abstract Stretchable conductors and sensors have attracted great attention for use in electronic skin and healthcare monitoring. Despite the development of many stretchable conductors, there are still very few studies that utilize the conventional methods making electrodes and circuits used in current industry. A method is proposed to fabricate a stretchable electrode pattern and a stretchable tactile sensor by simply depositing linear metal lines through a mask on a stretchable substrate. A method is developed of a self‐generating microfibril network on the surface of stretchable block copolymer substrates. The formation mechanism of the microfibril network is studied with finite element method simulations. Metals (Au and Ag nanowires) are deposited directly on the substrate through a patterned mask. This study shows that strain‐insensitive circuit and strain‐sensitive sensor can be fabricated in a controlled way by adjusting the thickness of the deposited metal, which makes it easy to fabricate a tactile sensor by metal deposition. Also, by using the characteristic that the sensor has different sensitivity depending on the line pattern width, a novel sensor structure simultaneously providing analog‐type position information and pressure value is proposed.