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Field Emission Scanning Electron Microscope (FE SEM) is an analytical instrument that provide the high resolution images of the sample surface by scanning it with a focused beam of electrons.

General instrument information

Short name
FE SEM
Category
kapitalna (>1.000.000 kn)
Instrument type
elektronski mikroskop
Analysis type
površinska analiza
Applications
vizualizacija
Standalone or bound
samostalan
Equipment condition
potpuno funkcionalan
Disciplines
Fizika , Geofizika , Kemija
Year of manufacture
2005
Financing body
Ministarstvo znanosti i obrazovanja Republike Hrvatske
External link

Characteristics

Model
Jeol, JSM 7000F
Manufacturer
Jeol
Operating and measuring scope
10-500 000 x
Principle of work
Interaction of a focused electrons beam with the investigated speicmen produce various signals that are used to study the specimen's microtopography and chemical composition. The most frequently secondary electrons are used to obtain the scanning electron images (SEI). The number of emmited econdary electrons depends on the surface morphology of investigated specimens and thus tree-dimensional image of sample surface is created. Signal of backscattered electrons (BSE) can be also used to produce scanning electron image illustrating contrast in the composition in multiphase samples. The principle of EDS analysis (elemental analysis) is that the electron beam generate the X-rays within the specimen. The energy of emitted X-rays is characteristic of the chemical elements present in the sample while the intensity of the energy is proportional to the aboundance of the element in the sample.
Detailed technical characteristics
Working woltage (changable): 500 V - 20 kV Vacuum in sample chamber: 10-5 Pa Minimum working distance (WD): 4 mm Maximum sample size: 12 x 12 x 10 mm ;Schottky Field Emission Cathode High resolution 1.2 nm / 20 kV, 3 nm / 5kV SEI (secundary electron) and BEI (backscatter electron) imiging EDS (Energy Dispersive X-ray) spectrometer (Oxford Instruments
Additional equipment
Precise Etching and Coating System PECS Gatan 682 Crytical point dryer, Bal-tec, CPD 030 Freeze Dryer LL1500 HETO UPS system (10 kW) Disel electrical aggregate (12 kW)
Purchase price
5000000 HRK
Portability
No
Remote work
No

Location

Address
Bijenička cesta 54
Room
X/suteren/002A

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