(S)TEM
A 120 kV LaB₆ analytical transmission electron microscope with STEM capability, Gatan bottom-mounted CCD camera, and energy dispersive X-ray spectrometer.
This instrument was acquired through support from the U.S. National Science Foundation under MRI Grant No. 0923077.
| Specification | TEM mode | STEM mode |
| Accelerating voltage | 40, 60, 80, 100, 120 kV | Up to 120 kV |
| Point-to-point resolution | 0.38 nm | — |
| Lattice resolution | 0.20 nm | — |
| MAG mode | ×200 – ×1,200,000 | ×5,000 – ×2,000,000 |
| Low MAG mode | ×50 – ×1,000 | ×120 – ×4,000 |
| Selected-area MAG mode | ×2,000 – ×300,000 | — |
| Specimen tilt, X | ±25° | ±25° |
| High-tilt capability | Up to ±70° | Up to ±70° |
| TEM imaging | Conventional bright-field; high-resolution imaging to 0.20 nm lattice resolution |
| Diffraction | Selected-area electron diffraction (SAED), recorded digitally |
| STEM | Scanning transmission imaging up to ×2,000,000 |
| EDS | EDAX Energy dispersive X-ray spectroscopy |
| Specimen range | Biological, polymeric, soft-matter, nanomaterial and inorganic specimens |
| Beam-sensitive work | Operation at 40, 60 or 80 kV for radiation-sensitive materials |
| Camera | Gatan UltraScan 4000, Model 895 — bottom-mounted, retractable CCD |
| Format | 4k × 4k CCD (~16 megapixels), 16-bit digitisation |
| Coupling | Electron scintillator coupled to the CCD via fused fibre-optic plate |
| Optical technology | Gatan High-Contrast Resolution (HCR) |
| Readout | Four-channel parallel CCD readout, First Light electronics |
| Cooling | Peltier-cooled, approximately −25 °C |
| Software | DigitalMicrograph — acquisition, calibration, processing and storage |
Complete the Helios training session with staff before independent use.
Science Education and Research Center (SERC)
Room 008
info.em@temple.edu
Publications using EM Lab data must acknowledge the facility.
See here.