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The W. M. Keck Electron Microscope Facility
provides resources for SEM/TEM imaging, high resolution TEM imaging
of surfaces, and spatially resolved composition mapping and analysis.
The facility encompasses eight rooms of the Conte Polymer Science
building that are specifically designed for vibrational stability
and electromagnetic field shielding. There are five electron microscope
rooms, a dark room, a computer and data analysis room, and a sample
preparation room. Major instrumentation of the laboratory includes
a 300 kV transmission electron microscope (TEM)/ scanning transmission
electron microscope (STEM) with electron energy loss imaging filter
and an ultra thin window, light element energy dispersive X-ray spectrometer
(EDS). This instrument and a 200kV TEM/STEM with light element EDS
are particularly useful for high resolution imaging, electron diffraction
and spatially resolved composition analysis. An ultra high resolution
Field Emission Gun Scanning Electron Microscope is capable of imaging
surfaces to better than 50 Å, using a semi-in-lens close working
distance configuration and light element EDS for spatially resolved
composition analysis. Two additional SEMs and a 100 kV TEM are also
part of the facility. A cryoultramicrotome, room temperature ultra-microtome,
evaporator and ion beam sputter coater are available for sample preparation.
In addition to the materials-oriented microscopy
facilities located in the Conte building, there is a SEM and electron
microprobe facilty for materials that is supported at the Department
of Geosciences (www.geo.umass.edu/probe/probe.html), and the Central
Microscopy Facility in Morrill Science Center across the street from
the Department of Chemistry. The NSF-supported Central Microscopy
Facility (www.bio.umass.edu/microscopy/) is oriented toward biological
and life sciences research. It contains a FEI/Philips Tecnai 12 TEM,
a JEOL 100S TEM, and a JEOL JSM-5400 SEM, among other resources.
The facility provides fluorescence, brightfield, and photomicroscopy
capability, freezing-fracture, freeze-etch, and other low temperature
techniques, and ultramicrotome equipment. A variety of image processing
facilities are also available. These resources allow chemists interested
in cell biology or biologically-related structure phenomena to carry
out state-of-the-art investigations.
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