STEM meaning in Electronics ?

Answer:

What is Scanning Transmission Electron Microscopy mean?

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.

reference

Full Form	Category
Science Technology Engineering and Maths	Academic & Science
Science, Technology, Engineering or Mathematics	Academic & Science
Scanning Transmission Electron Micrographs	Academic & Science
Scanning Transmission Electron Microscopic	Academic & Science
Systems And Techniques Effective Management	Business
Subject To Enough Merchandise	Business
Soluble Trace Element Mixture	Chemistry
Success Through Exploring Mathematics	Community
Students And Teachers Educational Materials	Community
Science Technology Engineering And Math	Community
Science, Technology, Engineering and Mathematics	Educational Degree
Scanning Transmission Electron Microscopy	Electronics
Stop Trying Epidemic Modeling	General
Some Timebomb Ended Mars	General
Sorcery Trickery Enchantments and Magic	General
Saving Through Energy Management	Governmental
Science Technology Engineering Mathematics	Maths
Six Through Eight Mathematics	Maths
Social Technician Emergency Medical	Medical
Scanning Transmission Electron Microscope	Physics Related
Stress Trajectories Element Method	Physics Related
Storable Tubular Extendible Member	Physics Related
Science Technology Engineering Math	Technology
Science Technology Engineering And	Technology
Soluble Trace Element Mix	Trees & Plants