Hitachi HT 7700
Two Hitachi HT7700 120kV TEMs are located in the AIBN laboratory. Both are equipped with a dual-focus objective aperture and so are capable of swapping between high contrast and high resolution modes. These microscopes are easy to use and ergonomically designed. Without a viewing chamber the microscopes have instead, a screen camera so all operations can be performed digitally sitting in front of a computer screen, rather than the microscope column. Both microscopes also have AXT 2kx2k CMOS digital cameras which allow fast acquisition and great sensitivity.
The instruments are configured differently:
• One is equipped with a LaB6 filament and has an Exalens system which consist of a special objective lens configuration, achieving a smaller spherical aberration coefficient and so high resolution, 0.144nm at 120kV.
• The other instrument is equipped with STEM imaging with both bright field and dark field detectors. It also has a Bruker EDS system for elemental analysis.
Several holders are available for use with these microscopes:
• Standard single specimen holders
• Multi-specimen holder taking three grids
• Double tilt holder
• Low background holder for X-ray analysis
These microscopes are incredibly versatile and will suit viewing and analysis of a wide range of samples from
both the materials and biologicals disciplines.
Location: AIBN
Contact: Kathryn Green on Kathryn.Green@uq.edu.au