Department of Mechanical Engineering, ‡KI for the NanoCentury, §Mobile Sensor and IT Convergence (MOSAIC) Center, and ∥Department of Physics, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, South Korea.
ACS Nano. 2014 May 27;8(5):5154-63. doi: 10.1021/nn501204t. Epub 2014 Apr 29.
The demand for flexible and wearable electronic devices is increasing due to their facile interaction with human body. Flexible, stretchable and wearable sensors can be easily mounted on clothing or directly attached onto the body. Especially, highly stretchable and sensitive strain sensors are needed for the human motion detection. Here, we report highly flexible, stretchable and sensitive strain sensors based on the nanocomposite of silver nanowire (AgNW) network and PDMS elastomer in the form of the sandwich structure (i.e., AgNW thin film embedded between two layers of PDMS). The AgNW network-elastomer nanocomposite based strain sensors show strong piezoresistivity with tunable gauge factors in the ranges of 2 to 14 and a high stretchability up to 70%. We demonstrate the applicability of our high performance strain sensors by fabricating a glove integrated with five strain sensors for the motion detection of fingers and control of an avatar in the virtual environment.
由于其与人体的便捷交互，对灵活和可穿戴电子设备的需求正在增加。灵活、可拉伸和可穿戴传感器可以轻松安装在衣物上或直接粘贴在身体上。特别是，对于人体运动检测，需要具有高拉伸性和高灵敏度的应变传感器。在这里，我们报告了基于银纳米线（AgNW）网络和 PDMS 弹性体的纳米复合材料的高度灵活、可拉伸和灵敏的应变传感器，其形式为三明治结构（即，AgNW 薄膜嵌入在两层 PDMS 之间）。基于 AgNW 网络-弹性体纳米复合材料的应变传感器表现出强压阻性，其在 2 至 14 的范围内具有可调的灵敏系数，并且具有高达 70%的高拉伸性。我们通过制造集成有五个应变传感器的手套来演示我们高性能应变传感器的适用性，该手套用于手指的运动检测和虚拟环境中头像的控制。
