सत्येंद्र नाथ बसु राष्ट्रीय मौलिक विज्ञान केंद्र

सत्येंद्र नाथ बसु राष्ट्रीय मौलिक विज्ञान केंद्र

S. N. Bose National Centre for Basic Sciences

Facilities

Environmental Scanning Electron Microscope (ESEM)

Fields of Research
  • SEM imaging with high resolution and high contrast.
  • Chemical analysis (EDAX).
  • Investigations of non-conductive specimens under low-vacuum conditions.
  • Investigations of wet samples at pressures up to 2600 pa under ESEM mode.
  • Peltier effect on E-SEM (We can cool between 0ºC to 10ºC, specimen of very diverse in nature can be imaged)
Environmental Scanning Electron Microscope (ESSM) unit
Environmental Scanning Electron Microscope (ESSM) unit

Specifications and Performance

Source of electron
W-Filament
Operational voltage
200 V-30 KV
Detector
Pixcel dectector, Scintillation detector
Resolution
@30KV@High vacuum conditions
2.4nm
@30KV@Low vacuum conditions
3.0nm
@30KV@E-Sem conditions
5.4nm
Beam current
100μA

Detectors

  • Everhart-thornley detector for secondary electrons in high vacuum.
  • GSED for pressures up to 40mbar in ESEM mode operation.
  • Large field secondary electron detector for low vacuum operation.