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相关概念视频

Semiconductors01:22

Semiconductors

1.7K
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...
1.7K
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

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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...
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相关实验视频

Updated: Mar 3, 2026

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
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Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators

Published on: August 8, 2025

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用于平带增强的升级转换和接口损失恢复的内微电子.

Yuxiang Zhang1,2, Gianluigi Zito3, Yuyang Gu1

  • 1Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.

Nano letters
|March 2, 2026
PubMed
概括
此摘要是机器生成的。

研究人员开发了一个反向指数向上转换的纳米粒子-元表面. 这一突破增强了光探测器的红外响应,使通信和成像领域的新应用成为可能.

关键词:
metasurfaces 是一个表层.照片诱导的被动化光电探测技术的使用.上方转换纳米粒子

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Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies
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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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相关实验视频

Last Updated: Mar 3, 2026

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
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Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators

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Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 光子学是指光子学的使用方法.

背景情况:

  • (Si) 光探测器的红外 (IR) 响应能力有限,阻碍了通信,化学传感和生物医学成像方面的应用.
  • 用兰化物添加的升级转换纳米粒子 (UCNPs) 可以扩展Si光谱响应,但弱IR吸收和界面损失阻碍了单体集成.

研究的目的:

  • 通过使用UCNP来提高红外响应,克服Si光探测器的局限性.
  • 为UCNP-Si设备开发一个无蚀刻的单立体集成平台.

主要方法:

  • 使用低指数NaYF4:Yb/Er纳米筒涂上高指数无形,制造一个反转指数UCNP-Si元表面.
  • 使用集体Mie平带共振在976nm以提高光子吸收和度.
  • 实施近场中介性被动化,以减少界面损失通道.

主要成果:

  • 在976nm时实现了近单位的吸收,数值孔径宽 (NA ≈0.5).
  • 通过共振场增强和损失恢复,在上转换信号中实现了创纪录的6800倍增长.
  • 开发了一个完全无蚀刻的平台,兼容补充金属氧化物半导体 (CMOS) 处理.

结论:

  • 该UCNP-Si超表面显著提高了的上转换效率.
  • 该平台为先进的光探测器和紧型光源提供了可扩展的解决方案.
  • 无蚀刻集成方法与现有的半导体制造工艺兼容.