Deformable Ionic Polymer Artificial Mechanotransducer with an Interpenetrating Nanofibrillar Network
- Authors
- Kim, S.Y.; Kim, Y.; Cho, C.; Choi, H.; Park, H.W.; Lee, D.; Heo, E.; Park, S.; Lee, H.; Kim, D.H.
- Issue Date
- Aug-2019
- Publisher
- American Chemical Society
- Keywords
- blocking force; ionic interpenetrating nanofibrillar network; ionic polymer artificial mechanotransducer; soft actuator; soft haptic interface; wide bandwidth
- Citation
- ACS Applied Materials and Interfaces, v.11, no.32, pp.29350 - 39359
- Journal Title
- ACS Applied Materials and Interfaces
- Volume
- 11
- Number
- 32
- Start Page
- 29350
- End Page
- 39359
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/35095
- DOI
- 10.1021/acsami.9b10499
- ISSN
- 1944-8244
- Abstract
- We demonstrate an ionic polymer artificial mechanotransducer (i-PAM) capable of simultaneously yielding an efficient wide bandwidth and a blocking force to maximize human tactile recognition in soft tactile feedback. The unique methodology in the i-PAM relies on an ionic interpenetrating nanofibrillar network that is formed at the interface of (i) an ionic thermoplastic polyurethane nanofibrillar matrix with an ionic liquid of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM]+[TFSI]-) and (ii) ionic poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) conducting polymer electrodes with dimethyl sulfoxide and [EMIM]+[TFSI]- as additives. The i-PAM-based actuator with the ionic PEDOT:PSS exhibits a stable operation up to 200 Hz at low voltage as well as a blocking force of 0.4 mN, which can be potentially adapted to soft tactile feedback. Furthermore, on the basis of this fast i-PAM, we realized alphabet tactile rendering by using a 3 × 3 i-PAM array stimulated by a dc input of 2 V. We believe that our proposed approach can provide a rational guide to the human-machine soft haptic interface. © 2019 American Chemical Society.
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