Krivanek elected to Royal Society

It is with great pleasure that we have learned of the election of Dr. Ondrej Krivanek to the Royal Society of London. Dr. Krivanek is the co-founder of NION, manufacturer of aberration-corrected scanning transmission electron microscopes which currently hold the world records for analytical performance. The citation put before the electors reads:
Ondrej Krivanek is at the forefront of pioneering advances that have endowed electron microscopy with the ability to image and analyze matter atom-by-atom. His early work improved an existing electron microscope and used it to image directly, for the first time, the atomic structure of defects in semiconductors. He next designed several instruments for electron energy loss spectrometry (EELS). These are now used by hundreds of researchers world-wide. He also co-authored an EELS atlas, which is a standard reference source for spectra. Recently he designed and built a practical aberration corrector, thereby reaching a goal that had remained elusive for some fifty years. His novel microscopes are now able to map chemical elements in solid samples with atomic resolution and single atom sensitivity.

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ESTEEM workshop on Aberration Corrected STEM at SuperSTEM, 02-05 July 2010

SuperSTEM welcomes new staff!

Dr Miroslava Schaffer and Dr Michael Sarahan have joined the SuperSTEM on-site team.

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ESTEEM workshop on Aberration Corrected STEM at SuperSTEM, 02-05 July 2010

Registration for ESTEEM workshop on Aberration Corrected STEM at SuperSTEM, 02-05 July 2010, is now open!

Please register as soon as possible as places are limited. ESTEEM places are filling up rapidly!

SuperSTEM's Kasim Sader is now working at the Division of Physical Biochemistry at the National Institutes for Medical Research on determining the structure of the Influenza C virus by electron cryomicroscopy. Our Best Wishes!

Averaged EELS line scans retaining atomic resolution

Using a customized STEM EELS acquisition technique it is possible to reduce beam damage by spreading the dose along a rapidly scanned line during spectrum acquisition while keeping the atomic resolution of the UltraSTEM along a line profile. (read more)

In Memory of Albert Crewe

We sadly record the death of Albert Victor Crewe on 18 November 2009. Prof. Crewe was a graduate of Liverpool University who emigrated to Chicago and became Director of the Argonne National Laboratory in 1961. He recognised the revolutionary implications of replacing conventional thermal emission electron sources by field emission sources, and was the first to implement this far-reaching change. It enabled him to produce scanning transmission images of single atoms, and the first useful electron energy loss spectra. At the University of Chicago he led a remarkable team of young physicists who now carry forward the nanoscience his invention enabled. It was a great pleasure to all concerned when he opened the first SuperSTEM Laboratory in Daresbury in 2003. He was a remarkable innovator and a visionary, who ushered in atomic resolution microscopy.

Welcome and Good-By

Dr Quentin Ramasse has joined the SuperSTEM on-site team and SuperSTEM's Dr. Mhairi Gass has started a new career in the industry. All the Best!

(a) Aberration corrected HAADF High Resolution Scanning Transmission Electron Micrograph (HRSTEM) of a zinc-blende quantum well in a wurtzite segment.

b) An atomistic model of a wurzite/zinc-blende/wurtzite heterostructures along with a schemitcs of the band diagram. The Ga and As atoms have been marked in orange and green, respectively, for the WZ domains, and in red and blue, respectively for the double unit zinc-blende quantum well