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Optically- and Thermally-Responsive Programmable Materials Based on Carbon Nanotube-Hydrogel Polymer Composites
Open accessAbstract
A simple approach is described to fabricate reversible, thermally- and optically responsive actuators utilizing composites of poly(N-isopropylacrylamide) (pNIPAM) loaded with single-walled carbon nanotubes. With nanotube loading at concentrations of 0.75 mg/mL, we demonstrate up to 5 times enhancement to the thermal response time of the nanotube-pNIPAM hydrogel actuators caused by the enhanced mass transport of water molecules. Additionally, we demonstrate the ability to obtain ultrafast near-infrared optical response in nanotube-pNIPAM hydrogels under laser excitation enabled by the strong absorption properties of nanotubes. The work opens the framework to design complex and programmable self-folding materials, such as cubes and flowers, with advanced built-in features, including tunable response time as determined by the nanotube loading.
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Metadata
- Authors
- Zhang, X., Pint, C. L., Lee, M. H., Schubert, B. E., Jamshidi, A., Takei, K., Ko, H., Gillies, A., Bardhan, R., Urban, J. J., Wu, M., Fearing, R., & Javey, A.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-07-12
- Volume
- 11
- Issue
- 8
- Pages
- 3239-3244
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2024961805
- Cited by
- 529
- References
- 2
- FWCI
- 43.82
- Type
- journal article
- Language
- en
- Open access
- green
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