Shanghai Key Laboratory of Multidimensional Information Processing, State Key Laboratory of Transducer Technology, Department of Electrical Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, China.
National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences , 500 Yutian Road, Shanghai 200083, China.
ACS Appl Mater Interfaces. 2017 Jul 19;9(28):24148-24154. doi: 10.1021/acsami.7b07311. Epub 2017 Jul 3.
Mechanical flexible electronic skin has been focused on sensing various physical parameters, such as pressure and temperature. The studies of material design and array-accessible devices are the building blocks of strain sensors for subtle pressure sensing. Here, we report a new and facile preparation of a graphene hybrid structure with an ultrafast dynamic pressure response. Graphene oxide nanosheets are used as a surfactant to prevent graphene restacking in aqueous solution. This graphene hybrid structure exhibits a frequency-independent pressure resistive sensing property. Exceeding natural skin, such pressure sensors, can provide transient responses from static up to 10 000 Hz dynamic frequencies. Integrated by the controlling system, the array-accessible sensors can manipulate a robot arm and self-rectify the temperature of a heating blanket. This may pave a path toward the future application of graphene-based wearable electronics.
机械柔性电子皮肤一直专注于感知各种物理参数，如压力和温度。材料设计和可访问阵列的器件研究是用于微妙压力感应的应变传感器的基础。在这里，我们报告了一种新的、简便的制备具有超快动态压力响应的石墨烯杂化结构的方法。氧化石墨烯纳米片可用作表面活性剂，以防止石墨烯在水溶液中重新堆积。这种石墨烯杂化结构表现出与频率无关的压力电阻式传感特性。这种压力传感器超过了自然皮肤，可以提供从静态到 10000 Hz 动态频率的瞬态响应。通过控制系统进行集成，可访问的传感器阵列可以操纵机器臂并自行调节加热毯的温度。这可能为基于石墨烯的可穿戴电子产品的未来应用铺平道路。
