S. N. Bose National Centre for Basic Sciences
Under Department of Science and Technology, Govt. of India
Technical Cell - Central Equipment Facilities
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Equipments
High Resolution Transmission Electron Microscope (HRTEM)
Fig: High Resolution Transmission Electron Microscope unit
Fig: EFTEM Image (Colour Mapped)
Fig: Selective Area Electron Diffraction (SAED)
Fig: STEM Image
Fig: High Resolution TEM Image (HRTEM )
Technical Specification
Electron Source
FEG Source
Operating Voltages
200kV, 120kV, 80kV
Imaging Modes
- Bright field (BF)
- Dark Field (DF)
- High Resolution Imaging (HRTEM)
- Selective Area Diffraction Pattern (SAD)
- S-TEM Imaging
Analysis Mode
EDS Analysis
STEM-EDS Mapping (Point/Line /Area Mapping)
STEM-EDS Mapping (Point/Line /Area Mapping)
Resolution
TEM point resolution (nm): 0.24
TEM line resolution (nm): 0.102
STEM resolution (nm): 0.19
TEM line resolution (nm): 0.102
STEM resolution (nm): 0.19
Detectors
- Bottom mount CCD detector for TEM, HRTEM imaging
- EDAX Detector for EDS Analysis in TEM, STEM mode.
- High Angle Annular Dark Field Detector for STEM imaging.
HRTEM up-gradation
With the existing HRTEM in 2012 Gatan Imaging Filter (GIF) Detector has been attached which is capable of doing Chemical analysis of the TEM sample.
GIF Specification
Operation Modes
- Energy Filter TEM Imaging (EFTEM)
- Electron Energy Loss Spectrometry(EELS)
- TEM-EELS
- STEM-EELS (Point/Line/Area Mapping)
Operating Voltages
200kV, 120kV
Energy Field of view (eV)
2000
Energy Resolution (eV FWHM)
0.25
Detector
Energy Filter CCD detector for EFTEM Imaging and EELS Spectrometry