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関連する概念動画

Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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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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Two-Dimensional Microscopy in Microbiology01:29

Two-Dimensional Microscopy in Microbiology

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Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
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Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

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Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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Phase Contrast and Differential Interference Contrast Microscopy01:26

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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...
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X-ray Diffraction of Biological Samples01:10

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X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
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Three-Dimensional Microscopy in Microbiology01:28

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Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
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Updated: Jan 8, 2026

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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デュアルビュー断層回折顕微鏡

Carlos Alberto Chacón Ávila, Nicolas Verrier, Matthieu Debailleul

    Optics express
    |December 19, 2025
    PubMed
    まとめ
    この要約は機械生成です。

    生物学的サンプルの3D屈折率イメージングのためにデュアルビュー顕微鏡システムを開発しました。この高度な技術は、2つの角度からのデータを組み合わせて画質と解像度を向上させます。

    キーワード:
    3Dイメージング屈折率顕微鏡生物学的サンプル断層撮影デュアルビュー光

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    関連する実験動画

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    科学分野:

    • 生物医学光学
    • 顕微鏡
    • 3Dイメージング

    背景:

    • 生物学的サンプルの定量的3Dイメージングは、細胞構造と機能を理解するために重要です。
    • 従来の顕微鏡技術は、透明な組織内の複雑な屈折率の変化を解決する上で限界に直面することがよくあります。
    • 信号減衰とアーチファクトは、深度イメージングの画質を低下させる可能性があります。

    研究 の 目的:

    • 新しいデュアルビュー透過型断層回折顕微鏡システムの紹介。
    • 透明な生物学的サンプルの複雑な屈折率の定量的3Dイメージングを可能にすること。
    • 既存の方法と比較して、画質と体積分解能を向上させること。

    主な方法:

    • システムは、相補的な情報を取得するために、2つの反対方向からのデュアルビュー取得を利用します。
    • 周波数コンテンツベースの融合戦略を使用して、両方のビューからの再構成ボリュームをマージします。
    • このアプローチは、信号減衰を軽減し、深度画像劣化によるアーチファクトを低減します。

    主要な成果:

    • デュアルビューシステムは、複雑な屈折率の定量的3Dイメージングを正常に実行しました。
    • 融合戦略は、相補的なデータを効果的に組み合わせ、画質の向上につながりました。
    • アーチファクトと信号損失を低減することにより、体積分解能が向上しました。

    結論:

    • デュアルビュー断層回折顕微鏡システムは、3D屈折率イメージングに大きな進歩を提供します。
    • この方法は、透明な生物学的サンプルのイメージングにおける限界を克服するための堅牢なソリューションを提供します。
    • 画質と解像度の向上は、生物学的研究と診断に広範な影響を与えます。