Silcox Research Group


	Silcox Research Group Electron Microscopy and Microanalysis

facilities
CCMR facility manager Mick Thomas E-1 Clark Hall mgt3@ccmr.cornell.edu

CCMR UHV VG-501 A STEM

A Scanning Transmission Electron Microscope (STEM), provides a 100 keV-electron beam focussed to spot sizes as small as 0.2 nm. This provides atomic precision maps of the electron scattering in the sample. This, in turn, allows location of the electron beam on the atomic scale to achieve electron spectroscopy on the nanoscale (e.g., 0.2 to 0.5 nm). The electron spectroscopy can achieve 0.5 eV energy resolution over an energy range from 0 to 2 keV and has a demonstrated value in a wide range of problem areas.

Keck LEO-1550 SEM (NBTC and CCMR)

The Keck field emission Scanning Electron Microscope (SEM) operates from 100eV up to 30keV, with a resolution of 1nm at 20keV and 2.5nm at 5 keV. Due to its electron optical design it produces superb images, particularly at low accelerating voltages. Upgrades soon to be in place will double the efficiency of the in-lens secondary electron detector, add a new four-quadrant backscattered detector, and add a cooling/heating stage (-185C / 400C). This instrument is used by researchers in a wide variety of disciplines, including physics, materials science, biology, chemistry, and electrical engineering.

CCMR specimen preparation facilities

The major specimen preparation facilities include: one Allied High Tech Multiprep and two regular polishing wheals, Fischion Model 2000 dimpler, Nikon Epiphot 200 stero optical microscope, Fischion plasma cleaner and Bel-Tec Res 010 ion miller.

computer lab

A Dell Precision 360 MiniTower computer with 3.0 GHz Pentum4 processor provides sufficient computational power to simulate the propagation of the STEM electron probe inside various specimens (for simulating STEM BF/ADF imagings, CBED patterns et ct.) or to simulate XANES for prediction of the results of the EELS measurments (Silcox Lab).

information about other TEMs, SEMs and prep labs can be found here

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F-7 Clark Hall, Cornell University, Ithaca, NY 14853
Tel: 607-255-0649 Fax: 607-255-7658