Journal
NANO LETTERS
Volume 11, Issue 8, Pages 3239-3244Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl201503e
Keywords
Poly(N-isopropylacrylamide); carbon nanotubes; programmable actuators; composites; responsive materials
Categories
Funding
- DARPA/DSO
- NSF Center of Integrated Nanomechanical Systems
- Berkeley Sensor and Actuator Center
- Sloan Research Fellowship
- NSF
- Sunchon National University
- National Research Foundation of Korea [R31-2011-000-10022-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available