Introduction:
The SEM lab is set up as a multi-user facility to satisfy the needs of high-tech, biological and medical users for high resolution imaging and as a quantitative analytical device to meet the demands of a variety of earth science applications. The SEM itself is a Bausch & Lomb 2100 Nanolab with a Kevex X-ray analyser, secondary electron, back scattered electron and cathode luminescence detectors. It is interfaced with a 4Pi spectral engine to a Macintosh computer, with maximum digital resolution of 4096 * 4096 pixels. The SEM is equipped with a very large sample chamber and stage. Stage movement is 40 * 80 mm with 90 tilt and 360 degree rotation. Specimen size can vary but in general the SEM can accommodate specimens up to a maximum of 50 mm in any dimension.