期刊
NANO LETTERS
卷 16, 期 2, 页码 1375-1380出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b04821
关键词
Graphene; wetting transparency; strain sensor; SERS; wearable sensor; cardiomyocyte
类别
资金
- SoCal Clean Energy Technology Acceleration Program
- von Liebig Center at UCSD - U.S. Department of Energy
- National Science Foundation Graduate Research Fellowship Program [DGE-1144086]
- laboratory startup funds
- Fondation Leducq Shapeheart Transatlantic Alliance
- California Institute for Regenerative Medicine [CIRM TR4-06857]
- National Institutes of Health [1R01HL128072-01, 5R01HL113601-04]
- National Science Foundation [ACI-1053575]
This article describes an effect based on the wetting transparency of graphene; the morphology of a metallic film (<= 20 nm) when deposited on graphene by evaporation depends strongly on the identity of the substrate supporting the graphene. This control permits the formation of a range of geometries, such as tightly packed nanospheres, nanocrystals, and island-like formations with controllable gaps down to 3 nm. These graphene-supported structures can be transferred to any surface and function as ultrasensitive mechanical signal transducers with: high sensitivity and range (at least 4 orders of magnitude of strain) for applications in structural health monitoring, electronic skin, measurement of the contractions of cardiomyocytes, and substrates for surface-enhanced Raman scattering (SERS, including on the tips of optical fibers). These composite films tan thus be treated as a platform technology for multimodal sensing. Moreover, they are low profile, mechanically robust, semitransparent and have the potential for reproducible manufacturing over large areas.
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