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相关概念视频

Semiconductors01:22

Semiconductors

750
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...
750
Phasor Arithmetics01:13

Phasor Arithmetics

331
Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
331
Non-ohmic Devices00:51

Non-ohmic Devices

1.1K
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...
1.1K
Bipolar Junction Transistor01:22

Bipolar Junction Transistor

826
Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational...
826
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

394
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
394
Types of Semiconductors01:20

Types of Semiconductors

669
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
669

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相关实验视频

Updated: Jul 26, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

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具有5位操作的非易失性电可编程集成光子学.

Rui Chen1, Zhuoran Fang2, Christopher Perez3

  • 1Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, 98195, USA. charey@uw.edu.

Nature communications
|June 12, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新型的硫化物 (Sb2S3) 相变材料,用于可扩展的光子集成电路. 这种新材料可以实现低损耗,高性能光学开关与多层操作,用于先进的信息处理.

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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Patterning via Optical Saturable Transitions - Fabrication and Characterization
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Patterning via Optical Saturable Transitions - Fabrication and Characterization

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相关实验视频

Last Updated: Jul 26, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.0K
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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Patterning via Optical Saturable Transitions - Fabrication and Characterization
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科学领域:

  • 光子学是指光子学的使用方法.
  • 材料科学 材料科学 材料科学
  • 光学计算是指光学计算的应用.

背景情况:

  • 可扩展光子集成电路 (PIC) 对于推进经典和量子信息处理至关重要.
  • 传统的PIC编程方法在设备足迹和能源消耗方面存在局限性.
  • 换相材料 (PCM) 具有潜力,但往往表现出高损耗和有限的功能.

研究的目的:

  • 为可扩展和高效的PIC开发一个基于PCM的新平台.
  • 克服现有的PCM在损失,可循环和多层操作方面的局限性.
  • 展示一种新的编程方法,以提高PIC的性能.

主要方法:

  • 集成宽带硫化物 (Sb2Sb3) PCM与光子平台的整合.
  • 使用芯片上的PIN二极管加热器来编程Sb2材料.
  • 使用动态脉冲控制来实现多层切换状态.

主要成果:

  • 使用Sb2/S3装设备实现了低插入损失 (<1.0dB) 和高灭绝比 (>10dB).
  • 证明了高循环性 (> 1600 个切换事件) 和非挥发性运行.
  • 成功实现了5位 (32级) 操作,精确控制中间状态 (0.50 ± 0.16 dB/步).

结论:

  • 覆盖Sb2和Sb3的光子平台为可扩展的PIC提供了一个有前途的解决方案.
  • 经过证明的多层操作和低损耗为先进的光学处理铺平了道路.
  • 这项技术可以应用于减轻像马赫-泽恩德干扰仪这样的设备中的相位误差.