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相关概念视频

MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

240
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...
240
Switching of BJT01:22

Switching of BJT

345
Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
345
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

173
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
173

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相关实验视频

Updated: May 9, 2025

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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基于相变的偏振选择性切换用于多层发射模拟.

Yinzhong Wang, Bowei Xie, Jiayue Yang

    Optics letters
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    概括
    此摘要是机器生成的。

    本研究介绍了一种智能多层散热器,用于红外应用,具有四个发射级别. 这种可适应的设备为热管理和防伪技术提供了潜力.

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    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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    科学领域:

    • 材料科学 材料科学 材料科学
    • 光学是什么?光学是什么?光学是什么?
    • 纳米技术纳米技术

    背景情况:

    • 多级发射调制对于先进的热管理和防伪至关重要.
    • 现有的策略往往缺乏在光谱范围的适应性和多功能性.

    研究的目的:

    • 介绍一款具有增强发射调节能力的新型智能多层散热器.
    • 展示一个集成In3SbTe2 (IST) 和VO2用于动态光谱控制的设计.

    主要方法:

    • 在基于VO2的多层结构上使用基于In3SbTe2 (IST) 的线性网格制造散热器.
    • 在2.5-30μm光谱范围内对发射率调制的描述.
    • 分析涉及法布里-佩罗特共振和内平面异构的潜在机制.

    主要成果:

    • 实现了四个不同的发射级别:0.11,0.27,0.54和0.82.
    • 在广角冲击下表现出稳定和出色的性能.
    • 验证了VO2相变在FP共振中的作用和IST相变在异质性中的作用.

    结论:

    • 开发的智能多层散热器为热防伪,热管理和节能等领域的应用提供了巨大的潜力.
    • 该设计为动态光谱控制提供了一个简单而通用的平台.