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相关概念视频

Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...

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Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities
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Published on: April 22, 2013

创建和操纵三维光学陷结构.

M P MacDonald1, L Paterson, K Volke-Sepulveda

  • 1School of Physics and Astronomy, St. Andrews University, North Haugh, St. Andrews, Fife KY16 9SS, Scotland.

Science (New York, N.Y.)
|May 11, 2002
PubMed
概括

研究人员使用光学笔中的两个环状激光束的干扰度图案创建了3D陷结构. 这种技术允许连续旋转和翻译,使得扩展3D晶体结构的构建成为可能.

科学领域:

  • 光学和光子学 在光学和光子学.
  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术

背景情况:

  • 光学子对于操纵微观物体至关重要.
  • 创建具有精确控制的复杂3D结构仍然是一个挑战.

研究的目的:

  • 开发一种使用光学干扰构建3D陷结构的新方法.
  • 为了使这些结构能够持续旋转和转移.

主要方法:

  • 使用由两个环状激光束产生的干扰度图案.
  • 实现激光束之间的频率差异以诱导旋转.
  • 使用光学子设置进行三维操纵.

主要成果:

  • 通过激光束干扰成功构建了3D陷结构.
  • 已证明被困结构的可控制和持续旋转.
  • 建立了精确3D定位的方法.

结论:

  • 开发的干扰测量技术为构建复杂的3D结构提供了一种多功能方法.
  • 这种方法具有制造扩展3D晶体材料的巨大潜力.

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  • 光学操纵的进步为新型材料合成铺平了道路.