Mass-selected Nanoparticles of PtxY as Model Catalysts for Oxygen
Electroreduction – Contacts:
Dan Friebel (SUNCAT), Ifan Stephens and Ib Chorkendorff (Technical University
Polymer electrolyte membrane fuel cells (PEMFCs), which electrochemically
transform hydrogen and oxygen into water, hold the promise to generate
electricity in an environmentally friendly and sustainable manner and could,
one day, replace batteries in zero-emission vehicles. A major challenge of this
technology is the design of the fuel cell’s cathode, at which oxygen is
electrochemically reduced. This process typically involves the use of
platinum-based catalysts. However, current cathode materials either demand the
use of large amounts of the precious heavy metal or lack long-term stability. A
research team has now reported that nano-sized particles of a platinum-yttrium
alloy (PtxY) show a remarkable performance superior to that
of other available catalysts for oxygen reduction. Read more...
See SLAC News Feature: New Platinum Alloy Shows Promise as Fuel Cell Catalyst
Architectures of Whole-module and Bimodular Proteins from
6-Deoxyerythronolide B Synthase – Contacts:
Andrea Edwards (Stanford University) and Thomas Weiss (SSRL)
Many organisms produce chemicals known as secondary metabolites that are not
directly vital for survival but often play important roles in the
organisms’ defense against other species. Due to their wide range of
medically relevant properties, these compounds are also of great interest to
humankind. The secondary metabolite erythromycin, for instance, is an important
antibiotic of bacterial origin. Recently, researchers have shed light on the
structural architecture of 6-deoxyerythronolide B synthase (DEBS) – a
large multi-protein complex that acts as an assembly line for one of
erythromycin’s precursors. Read more...
More SSRL-Related Science
Batteries: An Inside Story
Excerpt from Stanford alumni
Making batteries better is not just a goal for Professor Yi
Cui—it's something close to a life's work. His breakthroughs hold
the promise of far-reaching electric cars, long-running smartphones and a
cleaner, greener world.
If Cui succeeds in making the new materials work, it will be partly because
he can see inside the experimental batteries while they are operating. This
"in situ" technology, providing extraordinary
black-and-white images, has become readily available only in the past several
years and is improving all the time. High-energy, extra-bright x-rays generated
at SSRL can capture a material expanding and breaking, helping researchers
probe batteries closely. The x-rays travel through helium-filled pipes so that
they are not absorbed too soon, and then get focused through a condenser lens
on the tiny battery sample that had been prepared in an argon-filled box, away
from moisture and oxygen. Read more...
See also: Charging Ahead
SSRL Award Nomination Deadline
Lytle Award Nominations Due August 15
The Farrel W. Lytle Award was established to promote important technical or
scientific accomplishments in synchrotron radiation-based science and to foster
collaboration and efficient use of beam time among users and staff at SSRL. The
Lytle Award consists of a certificate and $1000. SSRL users and staff are
eligible to be nominated for the Lytle Award, but only nominations for
individuals will be considered (no group awards please). Letters of nominations
should include a summary of the individual's contributions and why they
should be recognized through this award. Supporting letters are welcome.
Nomination packages should be sent via email to Cathy Knotts.
Upcoming Onsite Events
SSRL/LCLS Annual Users' Conference and Workshops,
October 7-10, 2014
Help us spread the news that registration has opened for the SSRL/LCLS
Annual Users' Conference and Workshops, October 7-10, 2014. The activities
scheduled over this multi-day event provide opportunities to learn about the
latest user research results, current/future capabilities and new science
opportunities as well as to interact with other scientists and vendors of light
source related products and services. Conference website.
The plenary session keynote talks, award presentations, exhibits, user
poster session and reception will be held on October 9. Joint workshops will be
held October 7, 8 and 10
In-situ/Operando Characterization of Soft Materials
Progress Toward Single Particle Imaging (Oct. 7)
Application of LCLS in Industrial Research (Oct. 7-8)
Advances in Actinide Science from Synchrotron Spectroscopy
-Joint SSRL/ALS Workshop (Oct. 8)
Detector Development (Oct. 8)
LCLS Data Acquisition (Oct. 8)
In-Situ Studies of Inorganic Transition-Metal
Complexes (Oct. 8)
International Year of Crystallography - X-ray Diffraction
Success Stories (Oct. 8)
Characterizing and Controlling Chemical Dynamics -- New
Approaches to Resolving Long Standing Questions in Chemical Reactivity (Oct.
Looking Ahead: SAM Developers Forum (Oct. 10)
Resonant Soft X-ray Scattering (Oct. 10)
Sample Delivery Systems (Oct. 10)
Software for Serial Crystallography (Oct. 10)
Reserve lodging at the Stanford Guest House (650-926-2800) before AUGUST 8
(Use group code: USERS1014).
Other events being held in parallel with Users' Conference:
High Power Laser Workshop, October 7-8, 2014
A workshop on High Power Lasers will be organized on October
7-8, 2014 at Stanford University Munger Graduate Residence Conference Center.
Paul Brest Hall is located in Building 4 at 555 Salvatierra Walk and Nathan
Abbott Way. Shuttle
service will be provided between SLAC and campus. Separate registration for
this event will be required. See workshop
Macromolecular Crystallography: Stanford AutoMounter (SAM)
Developers' Forum Workshop, October 10, 2014
Other Events and Announcements
Synchrotron Environmental Science-VI, September
Registration and abstract submission are open for the SES-VI conference, set for September 11 and 12, 2014, at
the Advanced Photon Source, Argonne National Laboratory. Abstract for
oral and poster presentations are due August 1, 2014. There is no registration
SPIE International Year of Light Photo Contest
Please help to promote this photo contest and increase awareness about the
International Year of Light (IYL 2015). Submit photographs by September
30 and show how light and light-based technologies play a vital role in our
everyday lives. The photo contest is open to anyone not employed by SPIE with
prizes totaling $4,500 -- winning photographs will be published in SPIE
Professional magazine. Learn more
ALS User Meeting, October 6–8, 2014
More information is available at the Meeting website.
Save the Date - 12th International Conference on Synchrotron
Radiation Instrumentation, July 6-10, 2015, New York City
SLAC Partners with Small Businesses to Put Technology to Good
DOE-funded Program Benefits Companies, the Lab and Society. Even the
cleverest invention is no good if no one gets to use it – and even the
most useful invention may need a lot of tweaking to operate at its best.
That’s why researchers at SLAC collaborate with small businesses to
develop technology so it can benefit the world at large.
The DOE Office of Science funds programs that award contracts to small
companies, which often work with scientists at DOE national labs on projects of
mutual interest: Small Business Innovation Research (SBIR) and Small Business
Technology Transfer (STTR). The Office of Science just released the list of topics for its next round of SBIR and STTR funding,
with applications due Oct. 14. Read more...
User Research Administration Update
Beam Time Requests
Submit SSRL X-ray and VUV Beam Time Requests by August 24 and
Macromolecular Crystallography Beam Time Requests by September 17 to be
considered for beam time in the next run, November 2014-February 2015.
– SSRL X-ray/VUV proposals can be submitted three
times a year: September 1, December 1 and June 1.
– SSRL Macromolecular Crystallography proposals can be
submitted December 1, April 1 and July 1.
Submit proposals and beam time requests through the user
Food Truck Service at SLAC Discontinued
Stanford discontinued food truck service to SLAC after July 25. Over
the past 10 months the number of people using the trucks declined substantially
to the point that the number of customers was too low to sustain service.
Club and Starbucks kiosk will remain the onsite food options during the
construction. See Guide to Dining Options Near SLAC and at Stanford
The Stanford Synchrotron Radiation Lightsource (SSRL) is a third-generation
light source producing extremely bright x-rays for basic and applied
research. SSRL attracts and supports scientists from around the world who
use its state-of-the-art capabilities to make discoveries that benefit society.
SSRL, a U.S. DOE Office of Science national user facility, is a Directorate of
SLAC National Accelerator Laboratory, operated by Stanford University for the
U.S. Department of Energy Office of Science. The SSRL Structural
Molecular Biology Program is supported by the DOE Office of Biological and
Environmental Research, and by the National Institutes of Health, National
Institute of General Medical Sciences. For more information about SSRL science,
operations and schedules, visit http://www-ssrl.slac.stanford.edu.
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Questions? Comments? Contact Lisa Dunn