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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
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The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
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基于Ovonic值切换的人工 afferent神经元用于热传感器内计算.

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研究人员开发了一种新型的人工热附带神经元,使用添加酸 Telluride Ovonic Threshold Switching (OTS) 装置. 这一创新显著降低了先进的传感系统的功耗.

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科学领域:

  • 材料科学与工程 材料科学与工程
  • 神经科学和神经形态计算的神经科学和神经形态计算
  • 设备物理 设备物理

背景情况:

  • 人工 afferent神经元模仿生物感官系统对环境的感知.
  • 现有的人工神经元面临着高功耗和可扩展性的挑战.
  • 需要在机器人和电子领域高效,紧的人工传感系统.

研究的目的:

  • 开发一种生物灵感的人造热附带神经元,能降低功耗.
  • 为了解决当前人工神经元技术的局限性.
  • 探索ovonic值切换 (OTS) 设备在神经形态应用中的潜力.

主要方法:

  • 制造了一种新的添加基化 (N-doped SiTe) 卵子值切换 (OTS) 装置.
  • 描述OTS设备的统一性,耐久性和泄漏电流.
  • 使用工程化OTS设备构建和测试一个人造热 afferent神经元.

主要成果:

  • 被N-doped SiTe OTS装置显示出高均性和强大的耐久性.
  • 兴奋剂显著降低了泄漏电流,实现了超低功耗 (<0.3nJ/峰值).
  • 该设备表现出固有的温度反应,使其成为一个紧的人工热 afferent神经元.

结论:

  • N-doped SiTe OTS 装置为低功率的人工 afferent 神经元提供了一个有前途的解决方案.
  • 这项技术使得高度紧和高效的人工热传感系统的开发成为可能.
  • 这些发现对推进电子皮肤和感官神经机器人的研究有意义.