scanning electron microscope


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Related to scanning electron microscope: Transmission electron microscope

microscope

 [mi´kro-skōp]
an instrument used to obtain an enlarged image of small objects and reveal details of structure not otherwise distinguishable.
The light path of a darkfield microscope. From Hart and Shears, 1997.
acoustic microscope one using very high frequency ultrasound waves, which are focused on the object; the reflected beam is converted to an image by electronic processing.
binocular microscope one with two eyepieces, permitting use of both eyes simultaneously.
compound microscope one consisting of two lens systems whereby the image formed by the system near the object is magnified by the one nearer the eye.
darkfield microscope one so constructed that illumination is from the side of the field so that details appear light against a dark background.
electron microscope one in which an electron beam, instead of light, forms an image for viewing, allowing much greater magnification and resolution. The image may be viewed on a fluorescent screen or may be photographed. Types include scanning and transmission electron microscopes.
fluorescence microscope one used for the examination of specimens stained with fluorochromes or fluorochrome complexes, e.g., a fluorescein-labeled antibody, which fluoresces in ultraviolet light.
light microscope one in which the specimen is viewed under ordinary illumination.
operating microscope one designed for use in performance of delicate surgical procedures, e.g., on the middle ear or small vessels of the heart.
phase microscope (phase-contrast microscope) a microscope that alters the phase relationships of the light passing through and that passing around the object, the contrast permitting visualization of the object without the necessity for staining or other special preparation.
scanning electron microscope (SEM) an electron microscope that produces a high magnification image of the surface of a metal-coated specimen by scanning an electron beam and building an image from the electrons reflected at each point.
simple microscope one that consists of a single lens.
slit lamp microscope a corneal microscope with a special attachment that permits examination of the endothelium on the posterior surface of the cornea.
stereoscopic microscope a binocular microscope modified to give a three-dimensional view of the specimen.
transmission electron microscope (TEM) an electron microscope that produces highly magnified images of ultrathin tissue sections or other specimens. An electron beam passes through the metal-impregnated specimen and is focused by magnetic lenses into an image.
x-ray microscope one in which x-rays are used instead of light, the image usually being reproduced on film.

scan·ning e·lec·tron mi·cro·scope

a microscope in which the object in a vacuum is scanned in a raster pattern by a slender electron beam, generating reflected and secondary electrons from the specimen surface that are used to modulate the image on a synchronously scanned cathode ray tube; with this method a three-dimensional image is obtained, with both high resolution and great depth of focus.

scan·ning e·lec·tron mi·cro·scope

(skan'ing ĕ-lek'tron mī'krŏ-skōp)
A microscope in which the object in a vacuum is scanned in a raster pattern by a slender electron beam, generating reflected and secondary electrons from the specimen surface that are used to modulate the image on a synchronously scanned cathode ray tube; with this method a three-dimensional image is obtained, with both high resolution and great depth of focus.

scanning electron microscope

see ELECTRON MICROSCOPE.

scan·ning e·lec·tron mi·cro·scope

(skan'ing ĕ-lek'tron mī'krŏ-skōp)
A microscope in which the object in a vacuum is scanned in a raster pattern by a slender electron beam, generating reflected and secondary electrons from the specimen surface that are used to modulate the image on a synchronously scanned cathode ray tube; with this method a three-dimensional image is obtained, with both high resolution and great depth of focus.
References in periodicals archive ?
Scanning electron microscope based on a thermal (Schottky) field emitter with high resolution (at least 1.2 nm at 1 kV) and a large magnification range (20x - 1'000'000x)
Raw Material : Procurement of integrated eds and ebds system for carl zeiss scanning electron microscope, qty 01 no EMD value : INR 200000 Document Purchase End date : 18 Mar 2019 Opening date : 18 Mar 2019
EPFL intends to acquire a new scanning electron microscope equipped with a backscattered electron diffraction system and an energy dispersion spectrometer for its LMTM laboratory.
EPFL intends for its thermomechanical Metallurgy Laboratory (LMTM) to acquire from the Faculty of Science and Engineering Technology, a new scanning electron microscope, which is equipped with an electron backscatter diffraction system and an Energy Dispersive Spectrometer.
Scanning electron microscope photos reveal another similarity: The fossils have porelike openings ringed with what appear to be cells.
Invitation to tender: Scanning Electron Microscope for the Center for Microscopy and Image Analysis
To study tea scum quantitatively, the English scientists collected scum in a large beaker, washed it, dried it, and viewed it under a scanning electron microscope. White patches stood out, which proved to be calcium carbonate deposits.
Contract award notice: Scanning electron microscope (germany-halle: Scanning electron microscopes)
The ability of NIST scientists to image small magnetic structures has been recently improved by the installation of a new, ultra-high vacuum, field emission scanning electron microscope in the NIST Scanning Electron Microscopy with Polarization Analysis (SEMPA) facility.
Vogelsang-Eastwood plans to use a scanning electron microscope to determine the nature of the fabric.
the following specification describes the requirements for a scanning electron microscope with an analysis system consisting of eds and ebsd.
After each test, the Ohio State group examines the surfaces of the steel ball and the fullerene film with a scanning electron microscope and a scanning tunneling microscope (STM).

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