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関連する概念動画

Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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Labeling DNA Probes03:31

Labeling DNA Probes

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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
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¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

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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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Protein Dynamics in Living Cells

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Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
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関連する実験動画

Updated: Jul 24, 2025

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

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基本粒子を分子で探知する

Mingyu Fan1, Andrew Jayich1

  • 1Department of Physics, University of California, Santa Barbara, CA, USA.

Science (New York, N.Y.)
|July 6, 2023
PubMed
まとめ
この要約は機械生成です。

分子スペクトロスコーピーの実験は,電子の電気二極 Moment に新しい限界を与えます. この基本的な測定は 素粒子物理学の標準モデルをテストし それ以上の新しい物理を 探すのに役立ちます

さらに関連する動画

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
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関連する実験動画

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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
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科学分野:

  • 原子,分子,光学 (AMO) 物理学
  • 粒子物理学
  • 量子情報科学

背景:

  • 電子の電気二極モメント (EDM) は,電子の基本的な性質である.
  • ゼロでない電子のEDMは,標準モデルを超えた新しいCP違反の源を示します.
  • 電子電磁波の精度測定は 新しい物理学の探求に不可欠です

研究 の 目的:

  • 電子の電極二極モメントの大きさを制限する. 高度な分子スペクトロスコーピーの技術を用いて.
  • 標準モデルを超えた新しい物理学の証拠を探し出すために 電子電磁波に厳格な制限を設ける
  • 電子EDMの既存の実験上の限界を改善する.

主な方法:

  • 特定の分子 (例えば,ThO,YbF) に対する高精度レーザースペクトロスコピーを利用する.
  • 電子電磁波に敏感な微妙なエネルギーシフトや移行を測定する.
  • システム上の不確実性を最小限に抑え,感受性を高めるために,高度な技術を使用します.

主要な成果:

  • 電子の電極二極モメントの大きさの新しい,非常に厳格な上限を確立した.
  • 実験結果は,消える電子EDMの標準モデル予測と一致しています.
  • このデータは,以前の実験的制約に比べて, 顕著な改善を示しています.

結論:

  • 現在の実験的な限界は,CP違反の新たな源を予測する理論に強い制約を課しています.
  • 分子スペクトロスコピーは 精度の限界にある 基本的な物理学の探査のための 強力なツールです
  • 実験技術のさらなる改善は,電子電磁処理に対するさらに厳しい制約につながる可能性があります.