长距离的顺序和强大的量子合使得可靠的神经形态计算的稳定载体运输成为可能
Zhiqing Wang1,2, Jie Shen1,2, Keqiang Chen3
1State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|August 13, 2025
概括
研究人员使用量子点 (QD) 超级格子开发了可靠的memristor,用于神经形态计算. 这一突破提高了载体运输的稳定性,为更可靠的AI硬件铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 计算机工程 计算机工程
背景情况:
- 记忆器是生物启发的神经形态计算的关键,可以实现并行处理.
- 设备可靠性受到不稳定的载体传输的阻碍,限制了实际的memristor应用.
- 现有的神经形态系统在实现高精度和长期稳定性方面面临着挑战.
研究的目的:
- 为了提高用于神经形态计算应用的memristors的可靠性.
- 通过新型材料架构,使memristor设备中的稳定载体运输成为可能.
- 为下一代人工智能硬件开发一个强大的平台.
主要方法:
- 合成了Cu12Sb4S13量子点 (QDs),使用数据辅助的优化循环来控制增长.
- 在柔性基板上制造长距离订购的QD超级网格,将点间距离减少到0.92nm.
- 通过对齐QD网格方向并增加载体移动性的4.4倍,实现了强大的量子合.
主要成果:
- QD超级网格表现出异常的载体运输稳定性和设备可靠性.
- 在 8.4 × 10^7 秒的运行和 10^6 个读取周期中,memristors 的变化小于 0.1%.
- 在CNN模拟中实现了线性增强/减弱,宽导电范围 (264) 和93.31%的识别精度.
结论:
- 具有强大的量子合的远程订购QD超级网格显著提高了memristor的可靠性.
- 这种强大而灵活的平台克服了基于memristor的神经形态计算的关键挑战.
- 这些发现为先进,可靠的AI硬件提供了有希望的途径.
相关概念视频
Carrier-Mediated Transport
547
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
547
Carrier Transport
562
The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
562
The Role of Ion Channels in Neuronal Computation
3.3K
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....
3.3K
Electron Carriers
85.9K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
85.9K
Short-distance Transport of Resources
16.5K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.5K
Drug Absorption Mechanism: Carrier-Mediated Membrane Transport
4.5K
Certain large, lipid-insoluble drug molecules that resemble amino acids, peptides, or glucose, require specialized carrier proteins to facilitate their diffusion across cell membranes. This transport can occur through either facilitated diffusion, which does not require energy input, or active transport, which does require energy input.
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
4.5K


