Electron Microscopy SEF @ Massachusetts Institute of Technology
Used for: | Electron Microscopy |
Transmission Electron Microscopy (TEM) allows the researcher to form images of thin slices or finely divided powders of samples at a resolution of down to 0.18nm. Crystal structure may be analyzed by means of electron diffraction, and chemical analysis, with a sensitivity of a few atoms and spatial resolution of about 0.5nm, may be performed by energy-dispersive X-ray analysis (EDX) or electron energy-loss analysis (EELS).
The Scanning Electron Microscopy (SEM) visualizes the surface of solid samples, with a resolution (depending on the application) that can approach 1nm. Energy-dispersive X-ray analysis can be used to analyze volumes with dimensions of around 1 micron with a sensitivity of about 0.1wt%, while back-scatter electron imaging allows the visualization of regions of different composition (in many cases). Crystallographic orientation and structure can be examined using backscatter electron diffraction analysis, though sample preparation requirements for this technique are very stringent and limit the number of samples that can be studied in this way.
Instruments available:
Transmission Electron Microscopes
HB603 STEM Advanced analytical electron microscope
JEOL 2010 Advanced High Performance TEM
JEOL 2000FX General Purpose TEM
JEOL 200CX General Purpose TEM
JEOL 2010 FEG Analytical Electron Microscope
JEOL 2011 High Contrast Digital TEM
Scanning Electron Microscopes
JEOL 6320FV Field-Emission High-resolution SEM
FEI/Philips XL30 FEG ESEM
JEOL 5910 General Purpose SEM
Computation:
Five basic types of computing needs: image digitization, image simulation, image processing and analysis, utilities, and output devices.
Dark Rooms:
Two dark rooms are available; one for developing plates and negatives, the other for printing.
Specimen Preparation Equipment:
Fischione 1010 Ion Mill
Gatan Dual Ion Mil
Gatan Precision Ion Polishing System
Precision Ion Polishing System (PIPS)
Gatan High Resolution Ion Beam Coater
VCR Group Incorporated D500i Dimpler
Denton Thermo Vacuum Evaporator
Edwards Thermo Vacuum Evaporator
MT-X Ultramicrotome
Gatan 601 Ultrasonic Cutter