Field Emission Scanning Electron Microscope SIGMA ZEISS

SIGMA is a high-resolution scanning electron microscope (SEM) with field emission gun. The Gemini objective lens design combines electrostatic and magnetic fields to maximize optical performance while reducing field influences at the sample to a minimum. This enables excellent imaging, even on challenging samples such as magnetic materials.
The Gemini in-lens detection concept ensures efficient signal detection by detecting secondary (SE) and/or backscattered (BSE) electrons minimizing time-to-image. The maximum resolution can reach ~1nm. Tne SEM is equipped with energy-dispersive X-ray spectroscopy (EDS) system that enables sample element analysis.

Nome e marca dello strumento Field Emission Scanning Electron Microscope SIGMA ZEISS
Ubicazione Lab. A10, Tecnopolis, Valenzano (BA)
Anno fabbricazione/installazione 2011
Descrizione caratteristiche operative Electron Source Schottky Thermal Field Emitter
Resolution @ 15 kV 1.2 nm
Resolution @ 1 kV 2.2 nm
Backscatter Detector (BSD) HD BSD
Maximum Scan Speed 100 ns/pixel
Accelerating Voltage 0.02 – 30 kV
Magnification 10× – 1,000,000×
Probe Current 4 pA – 20 nA
Image Framestore 3 k × 2 k pixels
The SEM is equipped with a sputter coater for the preparation and coating of non conductive samples with this layers of Au or Cr
Campi di applicazione Morphological and compositional characterization of different kind of samples and surfaces. In particular for the investigation of nanoparticles and nanocrystals deposited or assembled on substrate, of nanocomposite materials and of functionalized materials.
Nome e Cognome Marinella Striccoli
Telefono +39 080 5442027