Results 241 to 250 of about 95,748 (273)

Microrheology of polymeric solutions using x-ray photon correlation spectroscopy

Journal of Physics: Condensed Matter, 2005
We demonstrate the technique of XPCS microrheology on opaque polymeric solutions (1-20% w/w) using colloidal silica probes. The short time decay of the intensity correlation function provides the mean square displacement (MSD) of the colloidal probes.
A, Papagiannopoulos, T A, Waigh, A, Fluerasu, C, Fernyhough, A, Madsen   +4 more
openaire   +2 more sources

Nanoparticle suspensions studied by x-ray photon correlation spectroscopy

MRS Proceedings, 2007
AbstractMultispeckle x-ray photon correlation spectroscopy measurements, carried out at beamline 8-ID at the Advanced Photon Source at Argonne National Laboratory, of opaque suspensions of silica nanoparticles in water and lutidine-water binary mixtures are presented.
Xinhui Lu, Simon G. J. Mochrie, S. Narayanan, Alec R. Sandy, Michael Sprung   +4 more
openaire   +1 more source

X-ray Photon Correlation Spectroscopy of Filler in Rubber

Japanese Journal of Applied Physics, 2007
We performed X-ray photon correlation spectroscopy (XPCS) of rubber containing filler during vulcanization. Using XPCS, we successfully measured the change in the scattering intensity fluctuation, that is, the structural fluctuation of filler in rubber during vulcanization. XPCS also revealed the change in intensity fluctuation with sample temperature.
Yuya Shinohara, Hiroyuki Kishimoto, Taketo Maejima, Hisashi Nishikawa, Naoto Yagi, Yoshiyuki Amemiya   +5 more
openaire   +1 more source

Polymer film dynamics using X-ray photon correlation spectroscopy

Materials Science and Engineering: C, 2004
A new method of X-ray photon correlation spectroscopy (XPCS) is applied for probing the dynamics of surface height fluctuations as a function of lateral length scale in supported polymer films. The short wavelength and slow time scales characteristic of XPCS extend the phase space accessible to scattering studies beyond some restrictions by light and ...
Kim, H., Rühm, A., Lurio, L., Basu, J., Lal, J., Mochrie, S., Sinha, S.   +6 more
openaire   +2 more sources

Effect of x-ray beamline optics on x-ray photon correlation spectroscopy experiments

SPIE Proceedings, 2007
We have evaluated the applicability of vertically-focusing kinoform lenses for tailoring the vertical coherence length of storage-ring undulator x-ray beams so that the entirety of the coherent flux can be used for small angle multi-speckle x-ray photon correlation spectroscopy (XPCS) experiments. We find that the focused beam produced by a kinoform
A. R. Sandy, K. Evans-Lutterodt, K. Fezzaa, S. Kim, S. Narayanan, M. Sprung, A. Stein   +6 more
openaire   +1 more source

Development of ultra-small-angle X-ray scattering–X-ray photon correlation spectroscopy

Journal of Applied Crystallography, 2011
This paper describes the development of ultra-small-angle X-ray scattering–X-ray photon correlation spectroscopy (USAXS–XPCS). This technique takes advantage of Bonse–Hart crystal optics and is capable of probing the long-time-scale equilibrium and non-equilibrium dynamics of optically opaque materials with prominent features in a scattering vector ...
F. Zhang, A. J. Allen, L. E. Levine, J. Ilavsky, G. G. Long, A. R. Sandy   +5 more
openaire   +1 more source

X-ray Photon Correlation Spectroscopy

1997
The new field of x-ray photon correlation spectroscopy (XPCS) offers an unprecedented opportunity to extend the range of length scales over which a material’s low frequency dynamics can be studied down to interatomic spacings. The ctitical decelopment which has now made XPCS a feasible technique is the high brightness of insertion devices at second and
openaire   +1 more source

X‐ray Photon Correlation Spectroscopy Studies of Surfaces and Thin Films

Advanced Materials, 2014
The technique of X‐ray Photon Correlation Spectroscopy (XPCS) is reviewed as a method for studying the relatively slow dynamics of materials on time scales ranging from microseconds to thousands of seconds and length scales ranging from microns down to nanometers. We focus on the application of this technique to study dynamical fluctuations of surfaces,
Sunil K, Sinha, Zhang, Jiang, Laurence B, Lurio   +2 more
openaire   +2 more sources

A novel event correlation scheme for X-ray photon correlation spectroscopy

Journal of Applied Crystallography, 2012
X-ray photon correlation spectroscopy (XPCS) was employed to measure the time-dependent intermediate scattering function in an organic molecular glass former. Slow translational dynamics were probed in the glassy state and the correlation functions were calculated from two-dimensional speckle patterns recorded by a CCD detector.
Y. Chushkin, C. Caronna, A. Madsen
openaire   +1 more source

Photon Correlation Spectroscopy of Colloidal Palladium Using a Coherent X-Ray Beam

Physical Review Letters, 1996
We have used an intense coherent x-ray beam and a real time digital autocorrelator to study the low frequency dynamics of colloidal palladium in glycerol by x-ray photon correlation spectroscopy (XPCS). The translational diffusion was studied in the q range from 1.5 3 1023 to 6 3 1023 A21 and in the temperature range from 279 to 293 K.
Thurn-Albrecht, T., Steffen, W., Patkowski, A., Meier, G., Fischer, E., Grübel, G., Abernathy, D.   +6 more
openaire   +3 more sources