Argonne National Laboratory

Users Week 2008
May 4-8, 2008

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Workshop 2

SAXS and SANS applications in nano materials and nano biology

Tue. May 6, all day
Lecture Hall

Organizers: Jan Ilavsky, Randall Winans, Byeongdu Lee, Jin Wang, P. Thiyagarajan, Pete Jemian (all APS), Steven Weigand (DND-CAT, Northwestern University)

To agenda > Updated 4/1/2008

A number of techniques such as SAXS, ASAXS, time-resolved SAXS, USAXS, GISAXS, reflectometry and XPCS are available at the APS to investigate the structure, dynamics and kinetics of reactions in nanostructured materials in their bulk and thin film architectures.  Complementary techniques using neutrons -- SANS and reflectometry -- are routinely combined with X-ray techniques to provide higher information content, especially for hybrid materials.

Although these in situ techniques offer high sensitivity and are good match to the length and time scales of nanostructure materials, the larger scientific community is not fully familiar with these techniques. Since these techniques are not extensively taught at the universities, in particular the younger scientific community working in the nanomaterials field lacks the expertise to use them effectively.  A focused workshop on the application of the above techniques will be valuable to the younger scientific community as well as strengthen the APS user program.

The workshop will be divided into topical sessions targeting SAS in general (SAXS and SANS) -- including various specialized techniques, such as time-resolved SAS, anomalous SAS, and grazing incidence SAS. In each session lectures will address the fundamentals of the technique, experimental aspects and analysis methods. These lectures will be complemented by recent scientific examples using the above techniques. Time for group discussion also will be set aside for interaction with the scientists with SAXS and SANS expertise.


9:00 - 9:40 Time-resolved SAXS studies of self-assembly processes in soft matter
Theyencheri Narayanan, European Synchrotron Radiation Facility
9:40 - 10:20 Particles Directed Biomaterials Development
Qian Wang, University of South Carolina
10:20 - 10:30 Break
10:30 - 11:00 In situ stress measurements in apatite and collagen of bone
Stuart Stock, Northwestern Medical School
11:00 - 11:30 Small angle X-ray scattering of bio-inspired materials
Millicent Firestone, Argonne National Laboratory
11:30 - 12:00

Small-angle X-ray scattering of metalloporphyrin assemblies in solution
Karen Mulfort, Northwestern University

12:00 - 1:10 Lunch
1:10 - 1:40 SAXS studies of nanodroplet formation, growth, and coagulation
Barbara Wyslouzil, The Ohio State University
1:40 - 2:15

Why Are Double-Network Hydrogels Tough?
Vijay Tirumala, NIST

2:15 - 2:30 Break
2:30 - 2:50 The Structure of Nanoporous Biocarbon for Hydrogen Storage as Determined by Small Angle X-Ray Scattering
Mikael Wood, University of Missouri-Columbia
2:50 - 3:20

Ultra-Small-Angle X-ray Scattering to Determine Microstructure of Anisotropic Polymer Colloid Suspensions
Eric Mock, University of Illinois at Urbana-Champaign

3:20 - 3:50

Entropically driven packing of block copolymer micelles: from depletion interactions to superlattices
Sayeed Abbas, University of Minnesota

3:50 - 4:20

Probing the Structural Transitions of a Glycine-Dependent Riboswitch
Adelene Sim, Stanford University

4:20 - 5:00

Characterization of Nanomaterials for Laser Fusion Targets
Anthony Van Buuren, Lawrence Livermore National Laboratory




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