Category
- Microscopy and Imaging » Electron Microscopy
Booking Details
EDS-Elemental mapping
EELS-Electron energy loss spectroscopy STEM-Brightfield and darkfield images Electron diffraction for crystallography studies
Facility Management Team and Location
Facility Features, Working Principle and Specifications
Working Principle
This JEM 2100 ultra HRTEM 200kVwas installed at the IIT Bombay in June 2010 as part of an DST-IRPHA project with partial support from the Institute. This HRTEM facility is equipped with a few useful attachments such as a scanning image observation device that incorporates provisions for obtaing STEM images, an EELS, an EDS, and most importantly, a Cryo mode facility with cryo specimen holder, cryo transfer unit, dry pumping station, and cryo sample preparation equipment like Gatan Cryo Plunger and FEI Vitrobot, and cryo specimen holder. This facility is supported by IRCC as a Central Facility of the Institute. This facility is open for all IIT Bombay internal users to meet their research necessities. Due to the sophisticated nature of the equipment and elaborate set up, this instrument does see periods of downtime.
Transmission Electron Microscope Configuration:
Resolution:
- Point resolution: 0.194 nm
- Lattice resolution: 0.14 nm
- Actual performance may vary for typical user samples.
Optical System:
- Focal Length: 1.9 mm
- Max. Eucentric Tilt: ±80°
- Magnification: 50x to 1,500,000x
Electron Source:
- LaB6 emitter
- Accelerating Voltage: 80, 100, 120, 160, 200 kV
Vacuum System:
- Fully interlocked
- Differentially pumped column
- Ultra High Vacuum for contamination-free observation (2 × 10-5 Pa)
Specimen Stage - Compustage:
- Fully computer controlled, Eucentric side entry, high stability
- High tilt and large field of view
- Choice of variety of Specimen Holders (Cryo, Multiple, Rotation Holders, etc.)
- X, Y movement: 2 mm; specimen size: 3 mm
- Specimen position store and recall including magnification and illumination settings
- Specimen exchange without switching off High Tension and Emitter
Imaging:
- High contrast
- Automated contrast enhancement function
- Focusing aid, adjustable wobbler for all magnification and directions
- Rotation-free magnification and diffraction series
- Magnification aberration corrected lens series
- Embedded CCD Camera - Gatan
- Low dose software
- Image acquisition software with wide choice for image manipulation and analysis
Instructions for Registration, Sample Preparation, User Instructions, Precautionary Measures and Charges
Applications
Nanotechnology, Biology and Life sciences, Material science, Pharmaceutical analysis, Semiconductors.