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Fluorescence and confocal microscopes operating principle. Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. [1]
Confocal endoscopy, or confocal laser endomicroscopy (CLE), is a modern imaging technique that allows the examination of real-time microscopic and histological features inside the body. In the word "endomicroscopy", endo- means "within" and -skopein means "to view or observe".
Scanning confocal electron microscopy (SCEM) is an electron microscopy technique analogous to scanning confocal optical microscopy (SCOM). In this technique, the studied sample is illuminated by a focussed electron beam, as in other scanning microscopy techniques, such as scanning transmission electron microscopy or scanning electron microscopy.
Diagram illustrating near-field optics, with the diffraction of light coming from NSOM fiber probe, showing wavelength of light and the near-field. [1] Comparison of photoluminescence maps recorded from a molybdenum disulfide flake using NSOM with a campanile probe (top) and conventional confocal microscopy (bottom).
The signal can be acquired with a camera in wide-field operation (a, b) or by point detection in confocal arrangement (c, d). Interferometric scattering microscopy ( iSCAT ) refers to a class of methods that detect and image a subwavelength object by interfering the light scattered by it with a reference light field.
Scanning confocal electron microscopy; Scanning electron cryomicroscopy; Scanning electron microscope; Scanning joule expansion microscopy; Scanning transmission X-ray microscopy; SEEC microscopy; Single-cell analysis; Single-molecule FRET; Solid-state nuclear magnetic resonance; Spectroscopy; Spin echo; Spin echo small angle neutron scattering
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Common examples of correlative microscopy techniques are Raman-AFM, [16] [13] Raman-SNOM, [17] and Raman-SEM. [18] Correlative SEM-Raman imaging is the integration of a confocal Raman microscope into an SEM chamber which allows correlative imaging of several techniques, such as SE, BSE, EDX, EBSD, EBIC, CL, AFM. [19]