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.

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 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