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相关概念视频

IR Absorption Frequency: Hybridization01:21

IR Absorption Frequency: Hybridization

1.5K
Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
1.5K
IR Spectrum01:19

IR Spectrum

2.9K
When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0%...
2.9K

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相关实验视频

Updated: Mar 7, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
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An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

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可见红外双频调制无机电色彩色彩色智能窗口

Jiaming Yang1, Mengying Wang1, Zheng Meng2

  • 1School of Energy and Power Engineering, Beihang University, Beijing 100191, P. R. China.

Nano letters
|March 6, 2026
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种彩色的电色智能窗口,使用氧化瓦纳和ITO膜进行双频带可见红外调制. 创新的设计为各种应用提供快速切换,高光学调制和长期稳定性.

关键词:
电染色的 电染色的高稳定性 高稳定性红外发射率的红外发射率是什么多频段的多频段服务.智能窗口是一个智能窗口.

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Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

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Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
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Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

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相关实验视频

Last Updated: Mar 7, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
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Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
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科学领域:

  • 材料科学 材料科学 材料科学
  • 光电学是指光电子产品.
  • 纳米技术 纳米技术

背景情况:

  • 电色 (EC) 技术在电刺激下调节光学特性,这对于智能窗户至关重要.
  • 现有的EC设备往往缺乏双频带可见红外 (VIS-IR) 调制能力.
  • 氧化物 (V2O5) 和氧化物 (ITO) 是光学设备开发中的关键材料.

研究的目的:

  • 为了展示一种具有增强VIS-IR光学调制的全新彩色电色智能窗口.
  • 研究V2O5极子特性和ITO局部表面等离子体共振 (LSPR) 的协同效应.
  • 为了在光学调制幅度,响应时间和循环稳定性方面实现高性能.

主要方法:

  • 使用V2O5和ITO薄膜制造一个电色智能窗户设备.
  • 在电刺激下VIS-IR光学特性和电色性能的表征.
  • 评估颜色切换,响应速度,光学调制幅度和长期循环稳定性.

主要成果:

  • 智能窗口显示可逆的黄色和绿色的颜色切换.
  • 实现了快速响应时间:VIS漂白3.0秒,IR发射率增加0.32秒.
  • 证明了高光学调制:在850nm (VIS-IR) 时 ΔTmax = 53.2%,在4.8μm (IR) 时 Δεmax = 0.57.
  • 在10^4个可逆周期中保持出色的稳定性.

结论:

  • 开发的EC智能窗口有效地实现了使用V2O5和ITO的双频段VIS-IR调制.
  • 极子效应和LSPR的结合为先进的EC设备提供了一个有前途的战略.
  • 这项工作突出了多频段调制在多元化电色应用中的潜力.