相关实验视频
Updated: May 8, 2026
09:31
Gold Nanorod-assisted Optical Stimulation of Neuronal Cells
Published on: April 27, 2015
8.9K
基于ZnO纳米线的低成本灵活光电子突触用于神经形态计算
Yongqing Yue1,2, Zixia Yu1,2, Fangpei Li1,2
1School of Microelectronics, Xi'an Jiaotong University, Xi'an 710049, China.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
研究人员使用ZnO/PDMS开发了一种灵活的人工光电子突触,用于先进的人工智能. 这种灵感来自大脑的设备模仿神经功能,显示神经形态计算和视觉系统应用的前景.
科学领域:
- 材料科学 材料科学 材料科学
- 神经科学是一个神经科学.
- 电气工程 电气工程
背景情况:
- 神经形态计算旨在复制大脑功能,以增强人工智能 (AI).
- 人工光电子突触是关键组件,将光学信号转换为神经形态系统的电信号.
- 灵活的电子设备对于开发下一代可适应的人工智能硬件至关重要.
研究的目的:
- 为了制造一个灵活的人工光电子突触装置.
- 为了研究该设备的突触可塑性和记忆能力.
- 评估设备在机械应变下的性能,用于实际应用.
主要方法:
- 使用磁铁喷射制造ZnO/PDMS结构的制造,用于在柔性基板上沉积ZnO膜.
- 突触可塑性的表征,包括激发性突触后电流 (EPSC),短期强化 (STP) 和在紫外线下配对脉冲促进 (PPF).
- 增长ZnO纳米线,以增强突触特性,实现长期增强 (LTP) 和记忆转换 (STM到LTM).
主要成果:
- 制造的ZnO/PDMS装置在紫外线照明下显示出优异的突触可塑性.
- 通过种植ZnO纳米线,可以获得改善的突触特性,包括LTP和STM-to-LTM过渡.
- 这种灵活的装置即使在曲条件下也保持了稳定的突触可塑性,突显了它的强度.
结论:
- 基于ZnO/PDMS的灵活的人工光电子突触显示了神经形态计算应用的巨大潜力.
- 该设备模仿突触功能的能力及其机械灵活性使其适合于先进的AI系统,特别是在视觉处理中.
- 这项研究有助于开发具有增强学习和记忆能力的大脑启发的计算硬件.
更多相关视频
10:39Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal
Published on: January 15, 2016
12.5K
06:36Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording
Published on: September 1, 2022
3.7K
相关概念视频
01:28Electrical Synapses
Electrical synapses found in all nervous systems play important and unique roles. In these synapses, the presynaptic and postsynaptic membranes are very close together (3.5 nm) and are actually physically connected by channel proteins forming gap junctions.
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
01:19The Role of Ion Channels in Neuronal Computation
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.
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential.
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential.
01:26Chemical Synapses
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
01:25Overview of Synapses
A synapse is a specialized structure where two neurons connect, allowing them to pass an electrical or chemical signal to another neuron. It is the point of communication between neurons. The term "synapse" is derived from the Greek word "synapsis," which means "conjunction." The entire process of neural communication revolves around the synapse. When activated, a neuron releases chemicals known as neurotransmitters into the synapse. These neurotransmitters cross the synapse and bind to...
01:26Chemical Synapses
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
01:24Metal-Semiconductor Junctions
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...