STEM [Scanning Transmission Electron Microscopy (STEM]

The unit is having JEOL's JEM-1200 EXII Scanning Transmission Electron Microscope (STEM). This is a 120 kV microscope. It is attached with Energy dispersive spectroscope (EDS) for Elemental X-ray microanalysis, Gatan's CCD camera and monitor for teaching and demonstration purposes while working on microscope. Winstor image analysis system for storage of images on floppy, harddisk and optical disk. Also images saved in this system can be processed and printed out immediately.

This is a conventional Scanning Transmission Electron Microscope which can be used by both biologists and material scientists. Biologists can study their specimen in both Transmission and Scan mode. Material Scientists can do elemental X-ray microanalysis, diffraction pattern, image observation in both Transmission and Scan mode.

The unit has well equipped excellent STEM specimen preparation laboratories for both biological and material sciences.

Different kind of specimen holders are available for the STEM for different purposes, these are as follows

For high resoultion studies of advance materials, ceramics, silicon, semiconductors, composites, geological samples, minerals, layered structure and interfaces etc. also to study these materials by convergent beam electron diffraction (CBED), selected area electron diffraction (SAED) and nano beam diffraction techniques. Biologists can study thicker sections with good resolution. It can help them to record stereophotographs which immediately yield three dimensional information. Also, it is very useful for the high resolution studies of viruses and bacteria.