Services and Materials for Agriculture Research and Technology "SMART Agrisolutions"
For increasing productivity, up-scaling efficiency and strengthening sustainability in agriculture
For increasing productivity, up-scaling efficiency and strengthening sustainability in agriculture
| Instrument details: | |
|---|---|
| Type: | Electron Microscope |
| Make: | FEI, Thermo Fisher Scientific, Waltham, Massachusetts, USA |
| Model No: | Tecnai G2 30-U twin microscope |
| Essential specification: | |
| Filament type: | LaB6 |
| Gun vacuum: | < 5.0 x 10-7 Pa |
| Column vacuum: | < 2.0 x 10-5 Pa |
| Accelerating Voltage | 300 kV |
| Resolution: | 0.1 nm (lattice), 0.24 nm (point-to-point) |
| Magnification: | 60 X – 970 KX |
| Grid type: | Cu or Ni (mesh size) |
| Detector type: | High Angle Annual Dark-field detector, EDAX SDD X-ray detector |
| Software: | FEI application software |
| Working principle: | |
| A high energy beam of electrons is shone through a very thin sample and the interactions between the electrons and the atoms. Some atoms of the material prominently stop or deflect highly energetic electrons on the way through the sample. Those electrons are collected from below the sample onto a phosphorescent screen or through a camera. In the regions where electrons do not pass through the sample the image is dark. Where electrons are unscattered, the image is brighter and there are a range of greys in between depending on the way the electrons interact with and are scattered by the sample. TEM is used to observe features such as the crystal structure and features in the structure like dislocations and grain boundaries. | |
| E-manual: | |
| http://emcfiles.missouri.edu/pdf/2007_07_TecnaiF2_30_ds.pdf | |
| Applications: | |
| Nanomaterial characterization: size, shape, elemental composition, crystallography | |
| Samples: | |
| Sample preparation | at center/ self-prepared sample |
| Type of samples | polymeric/metallic/peptide or protein (nature) solid, liquid (form) |
| Type of solvent | organic solvent |
| Analysis | images at different magnification for size and shape |
| Contact us | Post Your Query |
