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相关概念视频

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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,...
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

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Assembly, Tuning and Use of an Apertureless Near Field Infrared Microscope for Protein Imaging
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用近场显微镜绘制四层石墨烯多种类型的中红外映射.

Daniel Beitner1,2,3, Shaked Amitay3, Simon Salleh Atri3

  • 1Department of Materials Science and Engineering Faculty of Engineering, Tel Aviv University Ramat Aviv, Tel Aviv 69998, Israel.

Nano letters
|November 26, 2023
PubMed
概括
此摘要是机器生成的。

几层石墨烯多种类型显示出独特的中红外光学反应. 它们的独特性质,没有理论预测,增强化学传感和红外成像光子设备的潜力.

关键词:
贝纳尔·伯纳尔 (Bernal Bernal) 是一个著名的作家.有几个层的石墨烯.中红外纳米成像中红外纳米成像光学导电性的光学导电性.拉曼光谱法 拉曼光谱法罗姆面体是一个罗姆面体.扫描近场光学显微镜扫描近场光学显微镜堆叠的顺序 堆叠的顺序

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科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 材料科学是一种材料科学.
  • 光子学 是一个光子学.

背景情况:

  • 中红外 (MIR) 光谱区域对于化学分析至关重要.
  • 几层石墨烯 (FLG) 在MIR范围内提供广泛的吸收和可调光学特性.
  • 非中心对称的ABCB/ACAB四层石墨烯结构具有内在的带隙和极化.

研究的目的:

  • 为了研究三种四层石墨烯多类型的MIR光学反应.
  • 将实验结果与来自紧密结合模型的理论预测进行比较.
  • 评估这些聚类型在MIR光子设备中的潜力.

主要方法:

  • 散射扫描近场显微镜 (s-SNOM) 用于测量光学反应.
  • 测量是在8.5-11.5微米的MIR范围内进行的.
  • 使用有限双极模型分析光导率,并将其与紧固结合计算进行比较.

主要成果:

  • 在实验MIR光导率和不同四层石墨烯多类型的理论预测之间观察到显著的差异.
  • 实验结果表明,每个多种类型的独特光学行为并未完全被紧固结合模型所捕获.
  • 该研究强调了多种类型中MIR光导率的差异.

结论:

  • 四层石墨烯聚类型表现出明显的MIR光学特性.
  • 观察到的差异表明目前用于预测它们行为的理论模型的局限性.
  • 这些独特的多种类型对MIR化学传感和红外成像中的先进光子设备具有重大前景.