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相关概念视频

Properties of Enantiomers and Optical Activity02:24

Properties of Enantiomers and Optical Activity

17.1K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
17.1K
Nuclear Overhauser Enhancement (NOE)01:07

Nuclear Overhauser Enhancement (NOE)

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Irradiation of a spin-active nucleus causes an increase or decrease in the signal intensity of neighboring nuclei that are not necessarily chemically bonded or involved in J-coupling.  This phenomenon, called the Nuclear Overhauser Enhancement (NOE), results from through-space interactions between the nuclear spins. The NOE effect decreases with increasing internuclear distance and is generally not observed beyond 4 angstroms. In NOE, dipole-dipole interactions between neighboring...
692
Zeroth Law of Thermodynamics01:14

Zeroth Law of Thermodynamics

5.0K
Experimentally, if object A is in equilibrium with object B, and object B is in equilibrium with object C, then object A is in equilibrium with object C. That statement of transitivity is called the "zeroth law of thermodynamics." For example, a cold metal block and a hot metal block are both placed on a metal plate at room temperature. Eventually, the cold block and the plate will be in thermal equilibrium. In addition, the hot block and the plate will be in thermal equilibrium.
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相关实验视频

Updated: Jul 4, 2025

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

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热光学epsilon-接近零的效应.

Jiaye Wu1, Marco Clementi2, Chenxingyu Huang3,4

  • 1École Polytechnique Fédérale de Lausanne (EPFL), Photonic Systems Laboratory (PHOSL), STI-IEM, Station 11, Lausanne, CH-1015, Switzerland. jiaye.wu@epfl.ch.

Nature communications
|January 26, 2024
PubMed
概括
此摘要是机器生成的。

这项研究揭示了Epsilon-near-zero (ENZ) 纳米设备的显著热光学效应,增强了非线性光学特性. 这些发现对于开发先进的集成光子电路和非线性光子应用至关重要.

更多相关视频

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
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Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

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High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
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High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

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相关实验视频

Last Updated: Jul 4, 2025

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

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Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
09:32

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

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High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

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科学领域:

  • 光子学和纳米技术的使用.
  • 材料科学 材料科学 材料科学

背景情况:

  • 非线性epsilon-near-zero (ENZ) 纳米设备为芯片上的集成系统提供CMOS兼容的解决方案.
  • 在封闭的ENZ系统中产生热量给基于半导体的性能带来了挑战.
  • 对ENZ光学属性的温度敏感性缺乏系统的研究.

研究的目的:

  • 在ENZ条件下实验性地研究氧化物 (ITO) 中的线性和非线性热光学效应.
  • 描述ITO在电信频段中的温度依赖的光学特性.
  • 量化因ENZ条件而增强的热光学效应和群体速度分散.

主要方法:

  • ITO的温度依赖光学性能的实验性表征.
  • 在ENZ频率下分析线性和非线性热光学效应.
  • 测量群体速度分散及其温度依赖性.

主要成果:

  • 在ENZ频率下,氧化物表现出显著的线性和非线性热光学效应.
  • 在宽带频率上观察到前所未有的660-955%的热光效应增强.
  • 首次报告ENZ诱导的群体速度分散及其温度依赖性,以及热光非线性1113-2866%的增强.

结论:

  • 该研究为设计包装ENZ支持的光子集成电路提供了关键数据.
  • 为非线性光子应用和利用热光学效应的仿真提供了一个新的平台.
  • 了解热光学特性对于优化ENZ纳米设备的性能至关重要.