Equipment Type:

Electron Microscopy

Microscopy/Surface Analysis

Scanning Electron Microscopes (SEM)

Instrument Capabilities

The Thermo Scientific Apreo 2 LoVac is a high-resolution scanning electron microscope designed for imaging and characterization of a wide range of materials, including non-conductive, beam-sensitive, and outgassing samples. The low-vacuum (LoVac) mode allows specimens that are difficult to examine under conventional high-vacuum conditions to be imaged with reduced charging and without requiring conductive coating.

Key features:

• Stage: 110 × 110 mm stage with 65 mm Z-travel, 360° rotation, and −15° to 90° tilt.
• Easy navigation: 6-megapixel Nav-Cam with a 160 × 105 mm field of view for on-screen sample tracking and navigation.
• Vacuum range: 10–500 Pa
• Large multi-purpose sample holder:
  • Accommodates six ½-inch stubs.
  • Three ½-inch stubs pre-tilted at 45°.
• NICol SEM column: Equipped with a Schottky field-emission electron source.
  • Accelerating voltage: 200 eV–30 keV.
  • Beam energy can be reduced to approximately 20 eV landing energy using beam deceleration.
  • Beam current range: 1 pA–400 nA.
  • Resolution: 0.8 nm at 30 keV in STEM mode.
  • Resolution: 1.0 nm at 30 keV using in-lens detection.
  • Resolution: 1.6 nm at 1 keV using in-lens detection.
• Electron detectors:
  • Everhart–Thornley secondary electron detector (SED).
  • In-lens T1 and T2 detectors.
  • Low-vacuum (LoVac) detector.
• Microanalysis capabilities:
  • EDS QUANTAX 200 detector for elemental analysis.
• QuickConnect: Enables convenient transfer and imaging of air-sensitive samples while minimizing exposure to ambient conditions.

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Fees and Policies

• UT Users: $38/hour
• Higher Education/State Agencies: $63/hour
• Corporate/External Users: $63/hour

Traning

Users should register for the required in-person training course through UTLearn.