Journal
NATURE COMMUNICATIONS
Volume 4, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms3435
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Funding
- NSF-DMR [1005293, 1105129]
- NSF
- DOE
- State of Florida
- MICINN [CTQ2010-19501]
- CIBER-BBN
- VI National RD Plan
- Consolider Program
- ICREA Funding Source: Custom
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1005293] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1105129] Funding Source: National Science Foundation
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Understanding the compatibility between spider silk and conducting materials is essential to advance the use of spider silk in electronic applications. Spider silk is tough, but becomes soft when exposed to water. Here we report a strong affinity of amine-functionalised multi-walled carbon nanotubes for spider silk, with coating assisted by a water and mechanical shear method. The nanotubes adhere uniformly and bond to the silk fibre surface to produce tough, custom-shaped, flexible and electrically conducting fibres after drying and contraction. The conductivity of coated silk fibres is reversibly sensitive to strain and humidity, leading to proof-of-concept sensor and actuator demonstrations.
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