What does scanning transmission electron microscope mean?
Definitions for scanning transmission electron microscope
scan·ning trans·mis·sion elec·tron micro·scope
This dictionary definitions page includes all the possible meanings, example usage and translations of the word scanning transmission electron microscope.
Wiktionary
scanning transmission electron microscopenoun
An electron microscope that transmits a very narrow beam of electrons through a sample; it can detect individual large or heavy atoms.
Wikipedia
scanning transmission electron microscope
A scanning transmission electron microscope (STEM) is a type of transmission electron microscope (TEM). Pronunciation is [stɛm] or [ɛsti:i:ɛm]. As with a conventional transmission electron microscope (CTEM), images are formed by electrons passing through a sufficiently thin specimen. However, unlike CTEM, in STEM the electron beam is focused to a fine spot (with the typical spot size 0.05 – 0.2 nm) which is then scanned over the sample in a raster illumination system constructed so that the sample is illuminated at each point with the beam parallel to the optical axis. The rastering of the beam across the sample makes STEM suitable for analytical techniques such as Z-contrast annular dark-field imaging, and spectroscopic mapping by energy dispersive X-ray (EDX) spectroscopy, or electron energy loss spectroscopy (EELS). These signals can be obtained simultaneously, allowing direct correlation of images and spectroscopic data. A typical STEM is a conventional transmission electron microscope equipped with additional scanning coils, detectors, and necessary circuitry, which allows it to switch between operating as a STEM, or a CTEM; however, dedicated STEMs are also manufactured. High-resolution scanning transmission electron microscopes require exceptionally stable room environments. In order to obtain atomic resolution images in STEM, the level of vibration, temperature fluctuations, electromagnetic waves, and acoustic waves must be limited in the room housing the microscope.
Numerology
Chaldean Numerology
The numerical value of scanning transmission electron microscope in Chaldean Numerology is: 7
Pythagorean Numerology
The numerical value of scanning transmission electron microscope in Pythagorean Numerology is: 9
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"scanning transmission electron microscope." Definitions.net. STANDS4 LLC, 2024. Web. 19 Mar. 2024. <https://www.definitions.net/definition/scanning+transmission+electron+microscope>.
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