Field Emission Scanning Electron Microscopy (FESEM)

The FESEM facility is dedicated for imaging nano-scale materials. This facility was created in 2019 out of Rashtriya Uchchatar Shiksha Abhiyan (RUSA) grant, Ministry of Higher Education, Government of India, which is a Centrally Sponsored Scheme (CSS), aims at providing strategic funding to eligible state higher educational institutions. This facility is for carrying out research and consultancy in Biology, Chemistry, Geology and Physics to observe structures that may be as small as 1 nanometer (= billion of a millimeter) for morphological, chemical and analytical study of materials. The Energy dispersive spectroscopy (EDS) option is available for elemental analysis of nano or microstructures. The instrument is located in New Academic Block-I, Ground Floor.

Our Laboratory is equipped with a Zeiss make GeminiSEM 300 that uses a field-emission gun (FEG) electron source and can be switched between three vacuum modes enabling the investigation of conductive, non-conductive and high-vacuum incompatible materials. It offers nanometer resolution and a high signal to noise ratio in regular high vacuum. The EDS consists of a 30 mm2 SDD detector which enables detection of elements under high resolution.


Samples can be studied in pressures up to 5 Torr. Equipped with SE, Inlens and EDS detectors. Manual user interface EDS with 30 mm2 SDD detector which can be used in three modes: point & ID, analyzer and mapping


0.6 nm


Surface morphology of all kinds of conductive and non-conductive samples including nano to micro scale structures, films, ceramics etc. can be analysed. Elemental detection and orientation mapping can be done by EDS.

Sample Specifications

Conductive and non-conductive solid samples can be analyzed. 

Non-conductive samples can be analyzed under low vacuum mode or must be sputter coated either with gold-palladium or carbon for high vacuum mode.

Sample requirement for analysis

5 mg for powder sample and 1X1 cm2 for films


25X to approx 20,00000X depending on the nature of the sample


0.2 kV to 30 kV

Points to be noted

Samples should not be toxic, reactive or volatile in nature

Sample should be well dispersed and vacuum dried

The instrument is located at New Academic Block-I, Ground Floor.

Faculty Incharge:
Dr. Purnendu Parhi
Phone: +91 8895193144

Technical Support:
Mr. Jaywant Sahu
Phone: +91 8319619141