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University Instrumentation Center
TRANSMISSION ELECTRON MICROSCOPE
INSTRUMENT OVERVIEW
The transmission electron microscope (TEM) uses a beam of electrons transmitted
through an ultra-thin specimen. Using a beam of electrons rather than the photons of
a light microscope, allows greater resolution and enables researchers to study ultrastructure of organelles, viruses and macromolecules. Formed from the interaction of
the electrons transmitted through the specimen; the resulting image is magnified and
focused onto a digital display. Since electrons are easily deflected by gas molecules,
a vacuum environment is necessary for the TEM system, electron beam and
specimen. The TEM can also be used to characterize the microstructure of materials
with very high spatial resolution. Information about the morphology, crystal structure
and defects, crystal phases and composition can be obtained.
APPLICATIONS
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Sunflower leaf at 800X magnification.
Analysis of physical and biological scientific fields for a variety of applications
such as cancer research, virology, material science, pollution research, and
nanotechnologies
Imaging of magnetic nanoparticles to target drug delivery in cancer therapy
Research support of polymer-based paints, coatings, adhesives, and sealants
INSTRUMENT SPECIFICATIONS
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Zeiss/LEO 922 Omega Transmission Electron
Microscope (TEM)
Accelerating voltage 120 KV
Resolution line of 0.2 nm
Sample size – Diameter = 3 mm max
T: 603-862-2790 | F: 603-862-4104 | [email protected] | www.unh.edu/uic
W123 Parsons Hall, 23 Academic Way, Durham, NH 03824
© 2014 University of New Hampshire. All Rights Reserved.
“Poly(methyl methacrylate) homoarm star
polymers taken on 400 mesh Formvar film
coated 400 square mesh copper grids.
Samples were drop-casted using a 1 mg/mL
solution in THF.”
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