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関連する概念動画

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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...
The Electromagnetic Spectrum01:24

The Electromagnetic Spectrum

Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
The Electromagnetic Spectrum02:37

The Electromagnetic Spectrum

The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
Light as Energy01:35

Light as Energy

The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit less...
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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 developed.
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...

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関連する実験動画

Updated: Jul 12, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

光学波長より小さい光源である.

K Lieberman, S Harush, A Lewis

    Science (New York, N.Y.)
    |January 5, 1990
    PubMed
    まとめ

    研究者らは,光子を分子刺激子として包装することによって,サブ波長スケールから効率的な光放出のための新しい方法を開発しました. このブレークスルーにより,1ナノメートルの次元を通して光の伝播が可能になり,ナノスケール画像と光学技術の新たな道を開きます.

    科学分野:

    • 光学とフォトニック
    • マテリアルサイエンス 材料科学
    • ナノテクノロジー ナノテクノロジー

    背景:

    • 亜波長次元からの効率的な光放射は,光学における重要な課題であり続けています.
    • 既存の方法は,正確なアプリケーションのためのナノスケールボリュームに光を制限するために苦労しています.

    研究 の 目的:

    • 亜波長次元からの効率的な光放射のための方法を開発する.
    • 先進的な画像と操作のためのナノスケール構造を通して光の拡散を可能にします.

    主な方法:

    • 光子を分子刺激子として包装して,光束の量を減らす.
    • マイクロピペットの先端 (内部直径≤100 nm) に成長する分子マイクロクリスタル.

    主要な成果:

    • 効率的な光の放出と,サブ波長 (1 nm 以降) での拡散が実証されています.
    • 光束の体積を大幅に減らすことができました (10^9の因数で).
    • さまざまな直径のマイクロピペットによる伝送の改善が確認されました.

    結論:

    • 開発された方法は,超小型の次元から効率的な光放出を提供します.

    さらに関連する動画

    Lensless Fluorescent Microscopy on a Chip
    11:23

    Lensless Fluorescent Microscopy on a Chip

    Published on: August 17, 2011

    Conducting Multiple Imaging Modes with One Fluorescence Microscope
    08:32

    Conducting Multiple Imaging Modes with One Fluorescence Microscope

    Published on: October 28, 2018

    関連する実験動画

    Last Updated: Jul 12, 2026

    Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
    06:16

    Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

    Published on: April 25, 2019

    Lensless Fluorescent Microscopy on a Chip
    11:23

    Lensless Fluorescent Microscopy on a Chip

    Published on: August 17, 2011

    Conducting Multiple Imaging Modes with One Fluorescence Microscope
    08:32

    Conducting Multiple Imaging Modes with One Fluorescence Microscope

    Published on: October 28, 2018

  • この技術は,広範囲の放射波長 (UVから赤) をサポートしています.
  • 潜在的な応用には,高効率の表面の刺激イメージングと,先進のナノスケール光学装置が含まれます.