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関連する概念動画

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

9.4K
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...
9.4K
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

12.3K
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...
12.3K
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

2.0K
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...
2.0K
X-ray Imaging01:24

X-ray Imaging

7.7K
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...
7.7K
Deconvolution01:20

Deconvolution

764
Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
764
Aliasing01:18

Aliasing

945
Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
945

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関連する実験動画

Updated: Apr 30, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

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シングルショットマルチフレームリアルタイムイメージングは,ディスクリートな超連続体を使用しています.

Chong Zhang, Baoshan Guo, Manlou Ye

    Optics express
    |February 20, 2026
    PubMed
    まとめ

    超連続フォトンのエンコードされた極度にダイナミックなスナップショットイメージング (SPEED-SI) は,高速で高解像度のイメージングを実現します. この超高速画像技術により,複雑な再構築なしにフェムト秒スケールでの連続撮影が可能になります.

    科学分野:

    • オプティカル・イマージング
    • スペクトロスコーピーは,スペクトロスコーピーを用います.
    • 超高速現象について

    背景:

    • 既存の超高速連続イメージング方法は,シーケンス深さ,時間解像度,およびシステムの複雑性において制限があります.
    • 超高速の出来事を高精度で捉えることができる先進的なイメージング技術が必要である.

    研究 の 目的:

    • 現在の方法に固有のトレードオフを克服する新しい超高速画像技術を開発する.
    • フェムト秒のタイムスケールで単発連続画像で高いシーケンス深さと時間解像度を達成するために.

    主な方法:

    • 超連続フォトンのエンコードされた極度にダイナミックなスナップショット画像 (SPEED-SI) の開発.
    • フーリエ平面での精密なスペクトルセグメンテーションを使用して,超連続脈衝を独立したスペクトルチャンネルに分割しました.
    • シーケンス深さとフレームレートを高めるため,高密度の微分格子を使用しました.

    主要な成果:

    • シングルショットの超高速イメージングを実現し,取得毎に36フレームとフェムト秒の曝露時間を確保しました.
    • ピークフレームレート10.5兆フレーム/秒 (Tfps) を実証し,45フレームで17.9Tfpsまで拡張可能.
    • 計算による再構築なしにリアルタイムで高精度画像を生成し,フェムト秒連続画像の最も高いシーケンス深さを展示しました.

    さらに関連する動画

    Test Samples for Optimizing STORM Super-Resolution Microscopy
    16:52

    Test Samples for Optimizing STORM Super-Resolution Microscopy

    Published on: September 6, 2013

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    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 13, 2014

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    関連する実験動画

    Last Updated: Apr 30, 2026

    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
    11:34

    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

    Published on: December 3, 2013

    16.3K
    Test Samples for Optimizing STORM Super-Resolution Microscopy
    16:52

    Test Samples for Optimizing STORM Super-Resolution Microscopy

    Published on: September 6, 2013

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    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 13, 2014

    7.8K

    結論:

    • SPEED-SIは,前例のない詳細で超高速現象を調査するための強力な新機能を提供します.
    • このテクニックのスペクトル帯域幅とシーケンス深さの拡張の可能性は,紫外線連続体生成を用いて実証されました.
    • SPEED-SIは,リアルタイム,高解像度の超高速画像の重要な進歩として確立されました.