The Advanced Microscopy Facility
Welcome to the Advanced Microscopy Facility (AMF), an open user facility located in the Bob Wright Centre at the University of Victoria in beautiful British Columbia.
An atomic resolution image of Barium Titanate. Made by Dr. Rodney Herring on the HF-3300V STEHM. Barium Titanate exhibits ferroelectric properties as a ceramic and is an excellent photorefractive material and has piezoelectric properties. As a semiconductor Barium Titanate exhibits a positive temperature co-efficient of resistivity (PTCR) enabling it to exhibit an increase in resistivity at the Curie temperature. Barium Titanate is most often used as a thermistor in thermal switches. To see previous front page images, see the Daily Galleries section.
There have been many questions about the current status of the STEHM and sample preparation, which are addressed in the following.
The STEHM is ready in its high-resolution imaging and diffraction mode at 300 kV, 200 kV and 60 kV. The 300 kV works with thick specimens and produces the highest spatial resolution imaging. The 60 kV mode is good for beam sensitive specimens and provides more contrast, while achieving sub-Angstrom spatial resolution.
Training for use of the STEHM will be on an individual basis, first come, first served. Please contact our laboratory manager Dr. Elaine Humphrey, and fill out the training application form.
With regards to preparing your specimens, please see Dr. Elaine Humphrey, Adam Schuetze or Dr. Rodney Herring for help before beginning your preparation. TEM substrates for your specimens such as Silicon Nitride and holey Carbon are available to purchase from the laboratory for this purpose. Please do not use Formvar coated grids, they will not be allowed into the STEHM. We also have many types of specimen preparation solutions especially required for biological and beam-sensitive specimens.
The Hitachi FB-2100 FIB and Fischione 1010 Ion Mill are available for fabricating your specimens. A Fishione 1020 Plasma Cleaner and two Hitachi Zone (UV) cleaners are available for cleaning your specimens. A Gatan Cryoplunge 3 flash freezer is being installed at the beginning of November to keep liquids in an amorphous state in specimens containing water or other forms of liquids. Special TEM specimen containers for liquids and gases will be available and are expected to arrive for use in the near future.
The specimen holders available include a single tilt holder, double tilt holder and heating holder (up to 1500 C). Our cold stage LN2 holder and tomography holder are expected to arrive in December 2013.
For Analytical Electron Microscopy, i.e., determining compositions and the state of atoms and ions in materials, the Electron Energy Loss Spectrometer is now available. The X-ray Electron Dispersive Spectrometer (EDS) has been repaired and will be re-installed at the beginning of November.
Several quick links are available with the icons below, but for more complete information use the navigation links at the top and left side of the page.