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SNOM (Scanning Near-field Optical Microscopy) is a technique that enables you to work with standard optical tools beyond the diffraction limit that normally restricts the resolution capability of conventional microscopy. It works by exciting the sample with light passing through a sub-micron aperture formed at the end of a optical fibre. Typically, the aperture is a few tens of nanometers in diameter. The fibre is coated with metal to form the aperture and to prevent light loss, thus ensuring a focused beam from the tip. SNOM is capable of imaging a variety of fine structures, showing great application potentials in life science, material science and semiconductor technology. With spectroscopy, SNOM can realize local spectrum, fluorescence sensing and single atom/molecule detection and identification. see also BioLyser SNOM |
