Journal
CIRP ANNALS-MANUFACTURING TECHNOLOGY
Volume 68, Issue 1, Pages 595-598Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cirp.2019.04.037
Keywords
Nano manufacturing; Sensor; Stretchable
Funding
- National Research Foundation of Korea (NRF) - Korea Government (MSIT) [NRF-2018R1A2A1A13078704]
- Basic Research Lab Program, Institute of Engineering Research, Seoul National University (SNU) [NRF-2018R1A4A1059976]
- Brain Korea 21 Plus Project
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We designed and fabricated surface-nanopatterned, stretchable strain sensors featuring structural coloration. Sub-micrometre diffractive patterns were fabricated via focused ion beam (FIB) milling using a silicon wafer as a mould. The mould patterns were transferred to a soft elastomer material, such as polydimethylsiloxane, via nanoimprinting. We determined the surface-nanopatterned geometries responsible for colour tuning performance of the sensors. The sensor was extended (strained) to 50% of the original length without breaking, to calibrate changes in colour with strain. Strain in grossly deformed parts of soft robots was visualised by colour change, without any requirement for electrical measurements. (C) 2019 Published by Elsevier Ltd on behalf of CIRP.
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