Metallic Nanoislands on Graphene as Highly Sensitive Transducers of Mechanical, Biological, and Optical Signals

Nano Letters
Aliaksandr V ZaretskiDarren J Lipomi

Abstract

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 can 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.

References

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Citations

May 23, 2017·ACS Applied Materials & Interfaces·Chengzhi LuoChunxu Pan
Apr 4, 2017·Advanced Healthcare Materials·Han JinHossam Haick
Apr 24, 2018·Physical Chemistry Chemical Physics : PCCP·F J ValenciaF Munoz
Apr 24, 2019·Nanoscale·Taerin ChungKi-Hun Jeong
Dec 26, 2017·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Brandon C MarinDarren J Lipomi
May 26, 2018·Science Advances·Alex SavchenkoElena Molokanova
May 12, 2018·Small·Jayson V PagaduanDavid H Gracias
Sep 2, 2017·Sensors and Actuators. A, Physical·Liban JibrilDarren J Lipomi
Jul 14, 2020·ACS Omega·Julian RamírezDarren J Lipomi

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Methods Mentioned

BETA
scanning electron microscopy
surface-enhanced Raman scattering

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