Opportunities in Soft Matter Research at NSLS II

1. Micro-SAXS experiments

2. X-ray Photon Correlation Spectroscopy

3. New Things with Coherence

Investigation of micromechanical cantilever sensors with microfocus grazing incidence small-angle x-ray scatteringMarkus Wolkenhauer, Gina-Gabriela Bumbu, and Yajun ChengMax Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, GermanyStephan V. RothHASYLAB at DESY, Notkestr. 85, D-22603 Hamburg, GermanyJochen S. GutmannMax Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany and Institute for Physical Chemistry, Johannes Gutenberg University, Jakob-Welder-Weg 10, D-55099 Mainz, Germany

GISAXS from Polymer Brushes on Micromechanical Cantilevers

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Micro-SAXS of Feather Microstructure: What Makes Blue Jays Blue? New Metamaterials

Prum, R. O., Torres, R. H., Williamson, S., and Dyck, J. 1998. Coherent light scattering by blue bird feather barbs. Nature 396: 28-29.

Chromatin Structure: A Grand Challenge for Structural Biology

X-ray Photon Correlation Spectroscopy for the Dynamics of Soft Matter

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Pop quiz: Which is the liquid? Which is the glass?

X-ray Photon Correlation Spectroscopy for the Dynamics of Soft Matter (cont.)

Higher-Order Correlation Functions

Under coherent illumination, x-rays give I(Q,t) not <I(Q,t)>

Higher-Order Correlation Functions (cont.)For non-Gaussian processes, such as those showing intermittent dynamics, as expected near a glass transition, there’s extra information in higher order correlation functions e.g. G4=<I(0)I(t1)I(t2)I(t3)>

Heterodyne Near-Field Speckle: A Superior Method for USAXS and USAXPCS

Space Intensity Correlations in the Near Field of the Scattered Light: A Direct Measurement of the Density Correlation Function g(r) M. Giglio, M. Carpineti, and A. VailatiDipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Università di Milano, via Celoria 16, 20133 Milano, Italy