Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 261, Issue -, Pages 135-143Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.01.145
Keywords
Langmuir-Schaefer; Low-voltage dielectric elastomer actuator; Patterned monolayer electrodes; MWCNT polythiophene composite; Large strain actuator; Electroactive polymer
Funding
- European Union's Horizon research and innovation program under the Marie Sklodowska-Curie grant via the Swiss State Secretariat for Education, Research, and Innovation [641822 MICACT]
- Swiss National Science Foundation [200020_165993]
- Swiss National Science Foundation (SNF) [200020_165993] Funding Source: Swiss National Science Foundation (SNF)
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In this work, a Multiwalled Carbon Nanotube/poly(alkylthiophene) (MWCNT/PT) composite is developed as the electrodes for dielectric elastomer actuators (DEAs) using the Langmuir-Schaefer (LS) method. These composites form stable monolayers at the air-water interface that can then be LS transferred onto a poly(dimethylsiloxane) (PDMS) elastomer membrane. The monolayer electrode remains conductive up to 100% uniaxial strain. We present a method to fabricate DEAs using the LS transferred electrodes. By using a mask during the transfer step, the electrodes can be patterned with better than 200 pm resolution on both sides of a 1.4 mu m-thick pre-stretched PDMS membrane to produce an ultra-low voltage DEA. The DEA generates 4.0% linear strain at an actuation voltage of 100 V, an order of magnitude lower than the typical DEA operating voltage. (C) 2018 Elsevier B.V. All rights reserved.
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