Near-field optical microscopy

Professor Yasushi Inouye [Graduate School of Frontier Biosciences, Osaka University]

Even with the most advanced lens, light cannot be focused into a volume smaller than the wavelength of light. This is called “diffraction limit,” and because of this limitation, the spatial resolution of conventional optical microscopy is limited to about half the size of wavelength of light used to the observation.
However, since molecules, proteins and organelles composing living cells have nanometer dimensions, the microscopy with the resolution that allows us to observe such objects directly has been desired.
This program provides a lecture on “near-field light” and “near-field optical microscopy” that can meet the needs to observe samples at a nanometer spatial resolution.
The introduction illustrating the principle of the diffraction limit by animated figure is worth watching!

Professor Yasushi Inouye [Graduate School of Frontier Biosciences, Osaka University]

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