物質の変動状態を解明するための相関相関イメージング
Christopher Klose1, Felix Büttner2,3,4, Wen Hu5
1Max Born Institute, Berlin, Germany.
Nature
|January 18, 2023
まとめ
コヘレント・コレレーション・イメージング (CCI) は,解像度制限を超えることで,ナノメートルスケールの変動を直接観察することができます. このテクニックは 複雑な磁気移行と 乱雑なシステムの エネルギー風景を明らかにします
科学分野:
- 凝縮物質物理学
- 材料科学
- ナノテクノロジー
背景:
- ストキャスティックトランジションと変動は,ナノメートルスケールシステム,特に乱れで一般的です.
- 空間と時間の解像度の間のトレードオフのために,これらの現象を観察することは困難です.
研究 の 目的:
- 空間と時間の解像度の制限を克服するために,新しいイメージング技術であるコヒーレント・コレレーション・イメージング (CCI) を開発する.
- 乱雑なナノスケールシステムで 観測できなかった磁気波動を研究する.
主な方法:
- カメラのフレームをフーリエ空間で分類し,同じ状態のフレームを平均することでCCIを開発しました.
- 誤った分類を最小限にするために,相関ベースの類似度メトリックと階層的なクラスタリングを使用して高時間解像度を達成しました.
- 変性磁気帯域状態の磁気変動を分析するためにCCIを適用した.
主要な成果:
- 磁気システムの30以上の 異なる状態と移行の 複雑なネットワークを発見しました
- 時空データを用いて 固定エネルギーの景観を再構築した.
- 観測されたダイナミクスを顕微鏡で説明しました
結論:
- ナノスケールダイナミクスの直接観測を可能にします.
- この技術は,高相関性X線源に適用できます.
- フェーズトランジション,ピニング効果,トポロジー,超伝導性を研究するための新しい道を開く.
関連する概念動画
Phase Contrast and Differential Interference Contrast Microscopy
8.3K
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...
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...
8.3K
Magnetic Resonance Imaging
5.4K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
5.4K
Imaging Studies IV: Magnetic Resonance Imaging
43
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
43
X-ray Imaging
5.7K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
5.7K
Imaging Biological Samples with Optical Microscopy
4.9K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
4.9K
¹H NMR of Labile Protons: Temporal Resolution
1.2K
Protons bonded to heteroatoms such as nitrogen and oxygen exhibit a range of chemical shift values. This is due to the varying degree of hydrogen bonding between the proton and the heteroatom in other molecules. The extent of hydrogen bonding affects the electron density around the proton, thereby giving different chemical shift values for the protons in the proton NMR spectrum.
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...
1.2K


