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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...

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相关实验视频

Updated: May 18, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

量子增强的光学相位追踪.

Hidehiro Yonezawa1, Daisuke Nakane, Trevor A Wheatley

  • 1Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Science (New York, N.Y.)
|September 22, 2012
PubMed
概括
此摘要是机器生成的。

研究人员提高了光学相位跟踪精度,超出了标准量子极限. 他们使用相压缩光,与传统方法相比,实现了15%的误差降低.

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A Protocol for Real-time 3D Single Particle Tracking

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3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

相关实验视频

Last Updated: May 18, 2026

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09:23

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Published on: May 30, 2014

A Protocol for Real-time 3D Single Particle Tracking
10:16

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

科学领域:

  • 量子光学就是一个量子光学.
  • 计量学 计量学 计量学
  • 光学通信是一种光学通信.

背景情况:

  • 光学相位跟踪对于计量学和光学通信至关重要.
  • 连贯光的量子真空波动以前限制了跟踪精度.

研究的目的:

  • 在光学相位追踪中超越连贯状态极限.
  • 研究用于增强计量学的相挤压量子态的使用.

主要方法:

  • 在相挤压量子状态中使用连续波束.
  • 优化了挤压的程度,以获得最大的精度.

主要成果:

  • 实现了超出连贯状态极限的跟踪精度.
  • 证明平均平方误差减少了15 ± 4%.
  • 发现最优的精度发生在有限的挤压程度.

结论:

  • 阶段挤压状态提供卓越的光学相位跟踪.
  • 这种方法克服了以前压缩增强计量技术的局限性.