In the human skin, it has been well known that several mechanoreceptors uniquely sense external stimuli with specific frequencies and magnitudes. With regard to sensitivity, the output response shows nonlinearity depending on the frequency magnitude of the stimulus. We demonstrate a self-powered proton-driven solid-state somatosensor, which mimics a unique nonlinear response and intensity behavior of human mechanoreceptors. For this, a solid-state sensor is fabricated by combining a piezoelectric film and a proton generation device. The proton injection electrode and the Nafion layer conjugated with sulfonated graphene oxide are used for proton generation and transport. Two types of nonlinear signals from the sensor are similar to the Merkel/Ruffini (low deviation of threshold intensity), and in contrast, the behavior of Pacinian/Meissner (high deviation of threshold intensity) is simultaneously shown. The region of the most responsive frequency is also discriminated according to proton conduction. Moreover, it is asserted that unique signal patterns are obtained from the stimuli of various frequencies, such as respiration, radial artery pulse, and neck vibration, which naturally occur in the human body.

中文翻译：

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受人类机械感受器启发的非线性频率自适应，自供电，质子驱动的体传感器。

在人类皮肤中，众所周知，几种机械感受器独特地感测具有特定频率和幅度的外部刺激。关于灵敏度，输出响应显示非线性，具体取决于刺激的频率大小。我们演示了一种自供电质子驱动的固态体传感器，该传感器模仿了人类机械感受器的独特非线性响应和强度行为。为此，通过组合压电膜和质子产生装置来制造固态传感器。质子注入电极和与磺化氧化石墨烯共轭的Nafion层用于质子的产生和传输。来自传感器的两种非线性信号类似于Merkel / Ruffini（阈值强度的低偏差），相反，同时显示了Pacinian / Meissner的行为（阈值强度的高偏差）。还根据质子传导来区分响应频率最高的区域。此外，可以断言，独特的信号模式是从人体中自然发生的各种频率的刺激中获得的，例如呼吸，radial动脉脉搏和颈部振动。