On-skin and tele-haptic application of mechanically decoupled taxel array on dynamically moving and soft surfacesopen access
- Authors
- Kwon, Se Young; Park, Gyeongsuk; Jin, Hanbit; Gu, Changyeon; Oh, Seung Jin; Sim, Joo Yong; Youm, Wooseup; Kim, Taek-Soo; Kim, Hye Jin; Park, Steve
- Issue Date
- Dec-2022
- Publisher
- NATURE PORTFOLIO
- Citation
- NPJ FLEXIBLE ELECTRONICS, v.6, no.1
- Journal Title
- NPJ FLEXIBLE ELECTRONICS
- Volume
- 6
- Number
- 1
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/152264
- DOI
- 10.1038/s41528-022-00233-0
- ISSN
- 2397-4621
2397-4621
- Abstract
- To accurately probe the tactile information on soft skin, it is critical for the pressure sensing array to be free of noise and inter-taxel crosstalk, irrespective of the measurement condition. However, on dynamically moving and soft surfaces, which are common conditions for on-skin and robotic applications, obtaining precise measurement without compromising the sensing performance is a significant challenge due to mechanical coupling between the sensors and with the moving surface. In this work, multi-level architectural design of micro-pyramids and trapezoid-shaped mechanical barrier array was implemented to enable accurate spatiotemporal tactile sensing on soft surfaces under dynamic deformations. Trade-off relationship between limit of detection and bending insensitivity was discovered, which was overcome by employing micropores in barrier structures. Finally, in-situ pressure mapping on dynamically moving soft surfaces without signal distortion is demonstrated while human skin and/or soft robots are performing complicated tasks such as reading Braille and handling the artificial organs.
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