Journal
LANGMUIR
Volume 30, Issue 19, Pages 5378-5385Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la404955s
Keywords
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Funding
- Center for Solar and Thermal Energy Conversion, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0000957]
- NSF [ECS-0601345, EFRI-BSBA 0938019, CBET 0933384, CBET 0932823, CBET 1036672, DMR-9871177, DMR-0315633]
- AFOSR MURI [444286-P061716]
- NIH [1R21CA121841-01A2]
- Directorate For Engineering [1240264] Funding Source: National Science Foundation
- Emerging Frontiers & Multidisciplinary Activities [1240264] Funding Source: National Science Foundation
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Nature provides a vast array of solid materials that repeatedly and reversibly transform in shape in response to environmental variations. This property is essential, for example, for new energy-saving technologies, efficient collection of solar radiation, and thermal management. Here we report a similar shape-morphing mechanism using differential swelling of hydrophilic polyelectrolyte multilayer inkjets deposited on an LBL carbon nanotube (CNT) composite. The out-of-plane deflection can be precisely controlled, as predicted by theoretical analysis. We also demonstrate a controlled and stimuli-responsive twisting motion on a spiral-shaped LBL nanocomposite. By mimicking the motions achieved in nature, this method offers new opportunities for the design and fabrication of functional stimuli-responsive shape-morphing nanoscale and microscale structures for a variety of applications.
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