Metallic Nanoislands on Graphene as Highly Sensitive Transducers of Mechanical, Biological, and Optical Signals.
Metallic Nanoislands on Graphene as Highly Sensitive Transducers of Mechanical, Biological, and Optical Signals.
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DOI：
10.1021/acs.nanolett.5b04821
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发表时间：
2016-02-10
期刊：
影响因子：
10.8
通讯作者：
Lipomi DJ
中科院分区：
文献类型：
--
作者：
Zaretski AV;Root SE;Savchenko A;Molokanova E;Printz AD;Jibril L;Arya G;Mercola M;Lipomi DJ
这篇文章描述了一种基于石墨烯润湿透明度的效应;当通过蒸发沉积在石墨烯上时，金属膜（≤20 nm）的形态强烈依赖于支撑石墨烯的基底的特性。这种控制允许形成一系列几何形状，例如紧密堆积的纳米球、纳米晶体和具有低至3 nm的可控间隙的岛状结构。这些石墨烯支撑的结构可以被转移到任何表面，并用作具有高灵敏度和范围（至少4个应变数量级）的超灵敏机械信号换能器，用于结构健康监测、电子皮肤、心肌细胞收缩的测量和用于表面增强拉曼散射（Sers，包括在光纤尖端上）的基底。因此，这些复合膜可以被视为多模态传感的平台技术。此外，它们是低轮廓的、机械坚固的、半透明的，并且具有在大面积上进行可再现制造的潜力。
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.