Central Lab's High-Resolution SEM Installation Complete
Equipment Overview
The Central Lab’s newly acquired high-resolution field emission scanning electron microscope has been installed and commissioned. The Thermo Fisher Scientific Apreo 2S HiVac is now available for booking on the central lab reservation platform.
Key Specifications
- Resolution: 0.5nm@15kV (deceleration mode), 0.8nm@1kV (deceleration mode), 0.9nm@1kV (non-deceleration mode), WD 10mm
- Voltage range: 0.2kV–30kV
- Magnification: 50–2,000,000×
- Probe current range: 1pA–50nA
- Landing voltage: 20V–30kV (stage deceleration mode)
Features
The instrument supports three objective lens modes — standard, electrostatic (column deceleration), and ultra-high resolution magnetic immersion — enabling low-voltage imaging and full-range nano-to-sub-nano observation. It is suitable for nanoparticles, powders, catalysts, metals, ceramics, polymers, composites, semiconductors, and more.
Key detectors and accessories:
- In-column T1, T2, T3 high-resolution electron detectors (T1 with nanosecond acquisition rate; T3 supports topography and potential contrast imaging)
- Retractable DBS backscatter detector and chamber ETD secondary electron detector
- Oxford Xplore 65 EDS system (65mm² effective area, real-time elemental chemical imaging)
- Maps software for automated large-area image acquisition, stitching, and data integration
Applications
Suitable for micro-morphology characterization and elemental analysis in materials science, chemistry, nanotechnology, new energy, biomedicine, semiconductor devices, geology, and mineralogy.
Source: Central Lab (OA Notice)