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相关概念视频

UV–Vis Spectrometers01:14

UV–Vis Spectrometers

4.0K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
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Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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相关实验视频

Updated: May 2, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

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非局部机械-光学元表面.

Freek van Gorp1, Wenfeng Liu1, Corentin Coulais1

  • 1Institute of Physics, Universiteit van Amsterdam, 1098 XH Amsterdam, The Netherlands.

ACS photonics
|November 24, 2025
PubMed
概括
此摘要是机器生成的。

研究人员通过将机械超材料与光学超表面集成,开发了可调节的机械光学超表面. 这些新的结构为先进的光学应用提供了巨大的可调性.

关键词:
基里加米 (Kirigami) 是一个古老的城市.机械调 机械调 机械调多功能的超材料.非局部的地表转移.几乎是BICIC,几乎是BIC.

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Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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相关实验视频

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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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科学领域:

  • 纳米光子和元材料
  • 机械工程和材料科学 机械工程和材料科学

背景情况:

  • 超表面通过可重新配置的纳米结构来控制光学波面.
  • 机械超材料提供独特的紧张依赖性质.

研究的目的:

  • 通过整合机械和光学功能,在机械光学元表面实现巨大的可调性.
  • 探索新型设计的活跃的元表面与按需的光学控制.

主要方法:

  • 将机械超材料原理与对粒子间距离的非局部光学共振灵敏度相结合.
  • 设计集成的纳米图案材料,作为机械和光学组件兼具功能.
  • 在柔性基板中使用工程切割来进行应变诱导的调整.
  • 开发一种无基质纳米图案膜设计.

主要成果:

  • 通过应变诱导的粒子间距变化,在机械光学元表面中证明了巨大的可调性.
  • 在纳米粒子阵列中实现了高质量的因子共振的广泛光谱调整.
  • 成功创建了一个单质的膜,同时作为机械超材料和光学超表面.
  • 在没有单独的基板的情况下展示了显著的性.

结论:

  • 机械光学超表面为主动光学设备提供了一个有前途的途径.
  • 综合的方法可以对光学属性进行大规模的按需控制.
  • 潜在的应用包括可调节的过器,可重新配置的镜头和动态波面塑造.