Wide-Range Strain Sensors Based on Highly Transparent and Supremely Stretchable Graphene/Ag-Nanowires Hybrid Structures
Wide-Range Strain Sensors Based on Highly Transparent and Supremely Stretchable Graphene/Ag-Nanowires Hybrid Structures
复制标题
基于高透明和高拉伸性石墨烯/银纳米线混合结构的宽量程应变传感器
DOI：
10.1002/smll.201600487
复制
发表时间：
2016-09-28
期刊：
影响因子：
13.3
通讯作者：
Liu, Liwei
中科院分区：
文献类型：
--
作者：
Li, Qi;Ullah, Zaka;Liu, Liwei
电子设备对物理运动检测的需求不断增长，这促进了高弹性应变传感器的发展。特别是，为了捕捉大范围的物理运动，需要高度可拉伸和大范围的应变传感器。在这里，一种新型的透明的，可弯曲的，可拉伸的，和宽范围的应变传感器的基础上的类石墨烯和银纳米线混合结构的报告。在200%预拉伸的聚丙烯酸酯（PAC）上的杂化结构被图案化，其具有高达2 mm半径的良好的弯曲性、高达200%的令人印象深刻的拉伸性和相对较低的薄层电阻，接近200 Ω sq（-1），透明度为85%。预拉伸PAC技术使传感器能够在极高的应变下工作良好，并有效地感测多方向应变。采用气泡模板法在PAC上制备了Ag纳米线图案，Ag纳米线在PAC表面均匀分布，具有明显的连通性。这不仅降低了功耗，而且提高了应变传感器的灵敏度。所展示的应变传感器能够感测5%至200%之间的应变，并且这种感觉的响应时间为
The increasing demand of electronic devices for physical motion detection has encouraged the development of highly elastic strain sensors. Especially, to capture wide-range physical movements, supremely stretchable and wide-range strain sensors are required. Here, a novel transparent, bendable, stretchable, and wide-range strain sensor based on a sandwich-like stacked graphene and Ag-nanowires hybrid structures is reported. The hybrid structures on 200% pre-stretched polyacrylate (PAC) are patterned which possess good bendability up to 2 mm radius, impressive stretchability up to 200% and comparatively low sheet resistance approximate to 200 Omega sq(-1) with transparency 85%. Pre-stretched PAC technique enables the sensor to work well at extremely high strains and to sense the multidirectional strains efficiently. The Ag-nanowires pattern on PAC is fabricated via the bubble-template method, by which a uniform distribution of Ag-nanowires is achieved with significant connectivity throughout the surface. This not only decreases the power consumption but also enhances the sensitivity of the strain sensor. The demonstrated strain sensor is capable to sense strains between 5% and 200%, and the response time for this sensation is