Journal
NANO LETTERS
Volume 13, Issue 6, Pages 2826-2830Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl401088b
Keywords
Elastin-like polypeptides; graphene; actuators; hydrogels; composites
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Funding
- U.S. Army Engineering Research Development Center [W912HZ-11-2-0047]
- National Science Foundation Center of Integrated Nanomechanical Systems [EEC-0832819]
- NIH ARRA supplement to an NIDCR R21 Grant [DE 018360-02]
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Hydrogels actuators (HAs) that can reversibly respond to stimuli have applications in diverse fields. However, faster response rates and improved control over actuation timing and location are required to fulfill their potential. To address these criteria, we synthesized near infrared light driven HAs by interfacing genetically engineered elastin-like polypeptides with reduced-graphene oxide sheets. The resulting nanocomposites exhibited rapid and tunable motions controlled by light position, intensity, and path, including finger-like flexing and crawling. This work demonstrates the ability of rationally designed proteins to be combined with synthetic nanoparticles for the creation of macroscale functional materials.
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