Nature Communications：人工有机传入神经为智能机器人提供闭环触觉反馈

Core Insights - The article discusses advancements in artificial organic afferent nerves that enable closed-loop tactile feedback for intelligent robots, highlighting the integration of pressure-activated organic electrochemical synaptic transistors and artificial mechanoreceptors [1][3][11]. Group 1: Technological Advancements - The development of artificial organic afferent nerves (AOAN) demonstrates the ability to perceive external tactile information and adjust responses to static and dynamic touch stimuli, mimicking biological tactile systems [11]. - The AOAN operates at a low bias voltage of -0.6 V and shows pressure intensity-dependent transient responses, enhancing sensitivity to light touch through a training process [11]. - The integration of dendritic functions in AOAN allows for the perception of directional tactile stimuli and the identification of object sliding, achieving a detectable motion frequency of 40 Hz, which covers the sensitivity range of Merkel discs [11]. Group 2: Biological Inspiration - Future developments in prosthetics, bionic electronics, and intelligent robotic systems are inspired by the human tactile system, which perceives pressure and vibration through specialized mechanoreceptors in the skin [5][6]. - The peripheral nervous system coordinates afferent and efferent nerves to control the perception of stimuli and responses, with tactile perception processed in the primary somatosensory cortex of the brain [5][6]. Group 3: Challenges and Opportunities - Previous artificial mechanoreceptors exhibited unstable behavior, hindering subsequent signal transmission and processing of tactile information [7][8]. - The need for closed-loop operations in artificial tactile systems is emphasized, as it enables intelligent decision-making in complex tasks, such as adjusting grip force to prevent slipping [8][9]. - Organic semiconductors are highlighted as promising candidates for building sensing and neuromorphic devices due to their biocompatibility, mechanical flexibility, and low-voltage operation [9][12].