electron microscopy


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e·lec·tron mi·cros·co·py

examination of minute objects by use of an electron microscope.

electron microscopy

a technique using an electron microscope in which a beam of electrons is focused by an electromagnetic lens and directed onto an extremely thin specimen. The electrons emerging are focused and directed by a second lens onto a fluorescent screen. The magnified image produced is 1000 times greater than that produced by an optic microscope and well resolved, but it is two-dimensional because of the thinness of the specimen. Also called transmission electron microscopy. Compare scanning electron microscopy, transmission scanning electron microscopy.

e·lec·tron mi·cros·co·py

(ē-lektron mī-kroskŏ-pē)
Examination of minute objects by use of an electron microscope.

electron microscopy

A method of producing a greatly enlarged image of very small objects by using a beam of accelerated electrons instead of light. Modern instruments enable objects smaller than 1nm (one millionth of a millimetre) to be seen. This is almost down to atomic level. Focusing is done by means of magnetic fields obtained from charged plates or current-carrying coils. These fields act as lenses. Electron microscopes are essential tools in medical research and diagnosis.

electron

any of the negatively charged particles arranged in orbits around the nucleus of an atom and determining all of the atom's physical and chemical properties except mass and radioactivity. Electrons flowing in a conductor constitute an electric current; when ejected from a radioactive substance, they constitute the beta particles.

electron acceptor
see oxidant.
electron beam
the stream of electrons that flows from the anode to the cathode in the x-ray tube and then interacts with the tungsten target to produce x-rays.
electron carrier
a molecule associated with membrane-bound proteins that accepts and transfers electrons.
electron donor
electron micrographs
photographic images of electron microscopic fields.
electron microscope
see electron microscope.
electron microscopy
technology of using an electron microscope.
References in periodicals archive ?
Moreover, the tongue mucosa epithelial cells have been studied in human and animals by transmission (TEM) and scanning electron microscopy by Gibbins (1962); Apleton & Tyldesley (1971); Arvidson (1976); Yoshioka & Muto; Iwasaki & Sakata (1985), Iwasaki & Miyata (1985); Watanabe (1989); Iwasaki & Wanichanon (1993) and Iwasaki et al.
But a lot more research is needed, and that means more imagery from the ARS Electron Microscopy Laboratory.
Oku presents students, academics, researchers, and professionals working in a wide variety of contexts with a comprehensive examination of nanomaterial analysis utilizing transmission electron microscopy or TEM.
Techniques like transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS) fire beams of electrons through the material toward a spectrometer to gain information about atomic structure and bonding environment of atoms.
com), a company specializing in revolutionary products for in situ electron microscopy, today announced a seminar to be held on June 20, 2012 at Duke University's Shared Materials Instrumentation Facility titled: Imaging Wet Specimens In Situ Using Electron Microscopy with guest speaker Dr.
22 February 2012 - British scientific instruments maker Judges Scientific Plc (LON:JDG) said today its 51%-indirectly-owned unit Deben UK Limited will buy electron microscopy accessories specialist KE Developments Limited (KED).
a leading scientific instrumentation company providing electron microscopy systems for nanoscale applications across many industries, has released set of software applications that increase the throughput and ease-of-use of its electron microscopes for biological research.
The EVO HD, a new offering from Carl Zeiss for the conventional scanning electron microscopy (C-SEM) market segment, delivers higher resolution at low acceleration voltages compared to present conventional SEM, according to the company.
Bioimaging; current techniques in light and electron microscopy.
The field of microscopy was truly revolutionized by the development of electron microscopy in the 1930s, resulting in the first commercial products at the end of that decade.
To determine what kind of stone the axes were made of, Lu used X-ray diffraction, scanning electron microscopy, and electron microprobe analysis.
With the advent of electron microscopy in the early 1950s, the focus shifted to analyzing filler aggregates in the sub micron range (in order to closely recognize filler morphology and structure) as well as to studying in the micron region (in order to more generally characterize a compound).

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