EPSRC funded Ph.D. Research Project on the Chemistry and Biological Activity
of Nanoparticles using Aberration-Corrected Scanning Transmission Electron
Microscopy (SuperSTEM).
Institute for Materials Research (IMR) at the University of Leeds and
Daresbury Laboratories
Supervisors: Dr Rik Brydson & Dr Andy Brown, Institute for Materials
Research, University of Leeds, Leeds LS2 9JT, U.K.
Please Contact mtlrmdb@leeds.ac.uk or a.p.brown@leeds.ac.uk or phone +44
(0)113 343 2348/2369 for further details.
What is SuperSTEM ?
The SuperSTEM project involves the development of two aberration-corrected
STEM instruments in a five-year, Ł4.2 million project funded as a result of
the NW Science Review. The microscopes have been installed in a specially
designed and purpose built facility on the Daresbury Laboratory site in
Cheshire, and ultimately they will be available as a national resource.
SuperSTEM provides a world-leading atomic imaging and analysis facility
capable of chemical spectroscopy from single atoms and atomic columns
further details may be found by visiting www.superstem.org.uk. The SuperSTEM
project is led by five scientists from four partner universities [Peter
Goodhew, Mick Brown, Alan Craven, Rik Brydson and Gordon Tatlock]. The
full-time research team comprises a Technical Director [Dr Andrew Bleloch],
two research microscopists [Dr Uwe Falke and Dr Meiken Falke], a computer
specialist [Will Costello] and a technician [Peter Shiels]. This project is
part of a set of six studentships recently funded by the Engineering and
Physical Sciences Research Council and as such is fully funded (fees and
maintenance) for both UK and EC students. The project will be based at the
IMR in Leeds but will involve extensive travel to Daresbury Laboratories.
The studentship will examine a limited range of metal oxide nanoparticles of
varying mean particle size and size distribution. Systems of current
interest include:
(a) bare, carboxylic acid stabilized and charge stabilized Fe3O4
nanoparticles produced by standard colloidal routes at Leeds.
(b) g-Al2O3 and -g-Al2O3/ CeO2 catalyst supports produced at Leeds or
obtained commercially.
Atomic resolution HAADF and EELS measurements using the SuperSTEM I facility
will be undertaken. With an aberration corrected probe size of around 0.14
nm and below it will be possible to resolve the oxygen sub-lattice. A
combination of Z contrast imaging and EELS measurements at particle surfaces
(both direct and aloof beam measurements to maximize surface excitations)
and within the particle core will give structural and spatially resolved
chemical/ electronic information. It is intended that results will be
compared with theoretical calculations, both ab-initio total energy/
electronic structure calculations as well thermodynamic predictions.
An extension of this project, pertaining directly to the life sciences,
would involve an investigation of iron oxide nanoparticles in human liver
biopsies in collaboration with Dr Alice Warley and Dr Jonathan Powell at
Kingšs College London.
-- _____________________________ Dr. Rik Brydson, Leeds Electron Microscopy and Spectroscopy (LEMAS) Centre Institute for Materials Research, University of Leeds, Leeds LS2 9JT, U.K. Tel: 44 + (0)113 343 2369 Fax: 44 + (0)113 242 2531 Web: http://www.materials.leeds.ac.uk Web: http://www.materials.leeds.ac.uk/lemas New MSc in Nanoscale Science and Technology Visit http://www.ee.leeds.ac.uk/nanomsc/ ______________________________ UK SuperSTEM facility - Atomic resolution Analysis http://www.superstem.org.uk _______________________________ Bedtime reading.......... Series: Microscopy Handbooks - Electron Energy Loss Spectroscopy by Rik Brydson Published by BIOS September 2001 Ł29.99 ISBN: 1859961347 ************************** Join email discussion list for all aspects of Electron Microscopy and Analytical Spectroscopy (LEMAS) visit website http://www.jiscmail.ac.uk/lists/lemas.html and follow instructions ************************** ===================================== EELS and X ray database : http://www.cemes.fr/~eelsdb/ ===================================== --Received on Mon Jul 7 14:28:25 2003
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