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相关概念视频

Non-ohmic Devices00:51

Non-ohmic Devices

1.0K
In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
Consider a simple circuit consisting of a battery, a diode, and a resistor. A...
1.0K
Semiconductors01:22

Semiconductors

523
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
523
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

281
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...
281

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相关实验视频

Updated: May 26, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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纳米光电子设备之间的直接芯片上的光通信.

Vidar Flodgren1,2, Abhijit Das1,2, Joachim E Sestoft3

  • 1NanoLund, Lund University, Box 118, 22100 Lund, Sweden.

ACS photonics
|February 24, 2025
PubMed
概括
此摘要是机器生成的。

研究人员使用化 (InP) 纳米线展示了芯片上的光学通信,从而实现了高效的光子神经形态解决方案. 这一突破为低功耗,高性能计算铺平了道路,在神经网络中具有潜在的应用.

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Fabrication and Operation of a Nano-Optical Conveyor Belt
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相关实验视频

Last Updated: May 26, 2025

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12:19

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Published on: April 4, 2017

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Fabrication and Operation of a Nano-Optical Conveyor Belt
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科学领域:

  • 光电学是指光电子产品.
  • 纳米技术 纳米技术
  • 这是光子计算.

背景情况:

  • 芯片上的光通信对于节能光子神经形态系统至关重要.
  • 集成纳米级光子发射器和接收器用于通信是一个未经探索的领域.

研究的目的:

  • 为了证明在上单个酸 (InP) 纳米线光二极管之间直接在芯片上进行光广播.
  • 评估基于纳米线的光通信电路的性能和潜力.

主要方法:

  • 在上制造化 (InP) 纳米线光二极管.
  • 在单个纳米线之间进行定向光广播的演示.
  • 对线对线通信电路性能进行映射.

主要成果:

  • 实现了高达5位分辨率的强大的芯片内通信.
  • 经证明,在连续运行时,其低驱动功率为0.5μW.
  • 每次运行的估计能量为~1 fJ,信号向数百个节点散发.

结论:

  • 化 (InP) 纳米线电路满足生物衍生神经网络的要求.
  • 这项技术为高效,可扩展的光子神经形态计算提供了一条道路.
  • 理论建模确定了未来性能改进的关键领域.