Electron microscope

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(Redirected from Scanning Electron Microscope)

Scanning Electron Microscope

An electron microscope is an electron-optical instrument in which a beam of electrons is used to produce an enlarged image of a minute object on a fluorescent screen or photographic plate. Electron microscopy is used when items or features are too small to be imaged by light. In this case, the image is created by the bending/reflection of an electron beam rather. It can magnify very small details with high resolving magnifying at levels up to 500,000 times.

1 Scanning Electron Microscope (SEM)
2 Transmission Electron Microscope (TEM)
3 EM Gallery
4 Related References
5 See Also

Scanning Electron Microscope (SEM)

This is used to produce images with a characteristic three-dimensional quality. The method is for determining the surface structure of a solid by measuring the angle and energies of electrons scattered by the atoms on the surface of a sample.

Transmission Electron Microscope (TEM)

This is much like that light microscope, but generates in image by sending an electron beam through a very thin slice of the specimen. The resolution limit is around 0.05 nanometer.

EM Gallery

Hexagonal snow flake.	White blood cell, platelet, and red blood cell.	Cholera bacteria	Escherichia coli
A motile spirochaete bacterium	Microtubule crosssection	RNA Transcription	Fertilization (Sperm/Ovum)
The Rust Mite (Aceria anthocoptes)	The Peacock Mite (Tuckerella sp.)	The Cheese Mite (Tyrophagus putrescentiae)	The Flat Mite (Brevipalpus phoenicis)
Ant's head	The bacteria (Staphylococcus aureus)	Adult Black Fly (Simulium yahense) with parasite.	Bread Mold (Penicillium notatum) produces the penicillin antibiotic.
Carpenter Ant.	Salmonella typhimurium (red) invading cultured human cells.	Pollen from a variety of common plants.	Ommatidia of eye of Antarctic krill
Compound eye of the Antarctic krill Euphausia superba.	Cross-sectioned lung cilia.	Cilia on lung trachea epithelium.	Mitochondria.
Bacteria possessing multiple flagella.	Nematocyst.	Roundworm and egg.	Yellow mite (Lorryia formosa), commonly found on citrus plants.
SEM micrographs of four benthic foraminiferans.	Scanning Electron Micrographs of Diatoms.	pollen from Ipomea purpurea (Heavenly blue morning glory).	Lilium auratum pollen.
Sildalcea malviflora (prairie hollyhock) pollen.	A nerve ending broken open to reveal vesicles (orange and blue) containing neurotransmitters (chemicals used to pass messages in the nervous system).]]	A Metastasizing Breast Cancer Cell	A human leukocyte (white blood cell) of the type Eosinophil.
Golgi apparatus in a human leukocyte.	Emiliania huxleyi, a coccolithophore.	Cross section though a soybean root nodule.