CLS E-News Vol. 8 No. 8
www.lightsource.ca July 27, 2011
- Call for Proposals Opens Tuesday, August 2, 2011
- Users' Advisory Committee (UAC) Election Results
- 2011 Annual Users' Meeting and Related Workshops
- Brockhouse X-ray Diffraction and Scattering Sector Project Status
- Research Highlight: Imaging Local Electronic Corrugations and Doped Regions in Graphene
- New Staff & Now Hiring
1. CALL FOR PROPOSALS OPENS TUESDAY, AUGUST 2, 2011
The Cycle 15 Call for Proposals will open on Tuesday, August 2, for scheduling of beam time for the January-June, 2012 period. The schedule can be viewed at http://www.lightsource.ca/operations/schedule.php
***THE DEADLINE FOR PROPOSALS IS SEPTEMBER 7, 2011***
GENERAL USER PROPOSALS received for operational beamlines are reviewed for safety and technical feasibility, and then scored for scientific merit by an external review committee. Research time obtained through this competitive peer review process takes place twice per year. General User research should result in the publication of scientific results.
You have the option of submitting a NEW proposal or submitting a Beam Time Request against an Active Proposal. Allocation of shifts for January-June, 2012 will be based on the highest ranked proposals (both new and active). To view evaluation criteria used in reviewing and rating proposals see http://www.lightsource.ca/uso/proposal_writing_tips.php or to compare your score to others on the same beamline, please visit http://www.lightsource.ca/uso/results_of_call.php .
View participating Phase I and Phase II beamlines participating in the Call at http://www.lightsource.ca/uso/beamline_status.php
In addition to normal mode operations at 250 mA, eight shifts are available for Single Bunch Mode and six for Coherent Synchrotron Radiation studies. These shifts must be applied for through the General User program.
For more information, please visit our website: http://www.lightsource.ca/uso/call_proposals.php
2. USERS' ADVISORY COMMITTEE (UAC) ELECTION RESULTS
Voting has ended for the new members of the CLS Users' Advisory Committee 2011-2014 term, and the three new committee members will be:
- Dr. Jennifer van Wijngaarden, University of Manitoba
- Dr. Kenneth Burch, University of Toronto
- Dr. David Hawthorn, University of Waterloo
Thanks to both the user community for voting in the election and to our newest members for their service to the CLS user community.
Vice Chair, CLS Users' Advisory Committee
3. 2011 ANNUAL USERS' MEETING AND RELATED WORKSHOPS
An overview of the science projects addressed by users at the Canadian Light Source and scientific research in progress at other synchrotron radiation facilities, as well as an update regarding current and future beamline initiatives at the Canadian Light Source were presented at the 14th Annual Users' meeting held on June 25, 2011. Posters presented by attendees gave excellent examples of the vibrant research being carried out at the Canadian Light Source.
The Annual Users' Meeting was preceded, on June 24, by three well-attended workshops: "Illuminating Health from the Anatomic to Atomic", "Digging into Canada's Oil Sands", and "The Science of CLS Scientists".
On behalf of the members of the Canadian Light Source Users' Advisory Committee, I would like to thank all exhibitors, workshop organizers, speakers, and attendees who contributed to the success of the 2011 Annual Users Meeting. See you all at 2012 Annual Users Meeting!
Chair, CLS Users' Advisory Committee
4. BROCKHOUSE X-RAY DIFFRACTION AND SCATTERING SECTOR PROJECT STATUS
Construction on the building addition needed to house the Brockhouse beamlines has begun, with a schedule designed to minimize impact on operating beamlines. The new structure should be ready for use in January 2012. The following URL can be used to get a visual impression of progress on the Brockhouse facility: http://www.flickr.com/photos/clsresoff/sets/72157626705229418/detail/
A meeting of the design team during the week of August 14-20 will finalize the preliminary design report, paving the way for procurement of the scientific and technical instrumentation.
To get an email update on Brockhouse progress on an approximate weekly basis, please send an email to the CLS beamline scientist for Brockhouse (firstname.lastname@example.org) from the address you would like to use.
5. RESEARCH HIGHLIGHT: IMAGING LOCAL ELECTRONIC CORRUGATIONS AND DOPED REGIONS IN GRAPHENE
Contact: Sarbajit Bannerjee, mailto:email@example.com
Electronic structure heterogeneities are ubiquitous in two-dimensional graphene and profoundly impact the transport properties of this material. Here we show the mapping of discrete electronic domains within a single graphene sheet using scanning transmission X-ray microscopy in conjunction with ab-initio density functional theory calculations. Scanning transmission X-ray microscopy imaging provides a wealth of detail regarding the extent to which the unoccupied levels of graphene are modified by corrugation, doping and adventitious impurities, as a result of synthesis and processing. Local electronic corrugations, visualized as distortions of the p* cloud, have been imaged alongside inhomogeneously doped regions characterized by distinctive spectral signatures of altered unoccupied density of states. The combination of density functional theory calculations, scanning transmission X-ray microscopy imaging, and in situ near-edge X-ray absorption fine structure spectroscopy experiments also provide resolution of a longstanding debate in the literature regarding the spectral assignments of pre-edge and interlayer states.
The synchrotron data in this paper were collected at the CLS SM beamline 10ID-1 and NIST beamline U7A at NSLS. The research team consists of faculty and students from the University at Buffalo, U.S. National Institute of Standards and Technology, Lawrence Berkeley National Laboratory's Molecular Foundry and SEMATECH.
Schultz, B.J.; C.J. Partridge, V. Lee, C. Jaye, P.S. Lysaght, C. Smith, J. Barnett, D.A. Fischer, D. Prendergast, S. Bannerjee. Imaging local electronic corrugations and doped regions in graphene. Nature Communications, 28 June 2011, DOI: 10.1038/ncomms1376.
6. NEW STAFF & NOW HIRING
We are pleased to welcome the following new employee who started with us recently:
Brian Bewer, BioXAS Science Associate: Brian is a familiar face around the facility as he was a member of the Biomedical Imaging and Therapy (BMIT) beamline commissioning team while he completed his PhD in X-ray Imaging Physics from the U of S. Most recently, Brian was a Postdoctoral Fellow with the Department of Anatomy and Cell Biology.
Michael James, Radiation Safety Officer: Michael has a broad background in accelerator technology, radiation protection, electronics, and Canadian nuclear regulations. Michael recently retired from the Canadian Nuclear Safety Commission where he had worked for over 30 years.
Michael Switka, Accelerator Intern: Michael is a familiar face at the CLS, having completed an internship here in the summer of 2010. Michael is here for another internship before he returns to the University of Bonn where he will start his Masters studies in the fall.
Tom Kennedy, Public Relations & Marketing Coordinator: Tom brings an extensive background in public relations and marketing. Most recently, Tom was the CEO of Kennedy Marketing where he led a wide variety of projects including non-profit management and marketing advertising, corporate philanthropy, and public relations consulting.
The following job postings are currently available at CLS:
- Job No. 646 - Biological X-ray Absorption Spectroscopy (BioXAS) Staff Scientist
- Job No. 644 - Industrial Science Associate
- Job No. 608 - Industrial Research Associate
For a list of current opportunities at the CLS please check our website regularly: http://www.lightsource.ca/careers/
CLS E-News is an electronic newsletter designed to keep users and stakeholders informed about developments at the Canadian Light Source, the national synchrotron research facility located at the University of Saskatchewan, Saskatoon. Current and past issues of CLS E-News are available on the CLS web site: http://www.lightsource.ca/enews/archives.php
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Last modified: 2013-05-03 16:05:49