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Title: Particle Dynamics in Polymer-Metal Nanocomposite Thin Films on Nanometer-Length Scales

Abstract

X-ray photon correlation spectroscopy was used in conjunction with resonance-enhanced grazing-incidence small-angle x-ray scattering to probe slow particle dynamics and kinetics in gold/polystyrene nanocomposite thin films. Such enhanced coherent scattering enables, for the first time, measurement of the particle dynamics at wave vectors up to {approx}1 nm{sup -1} (or a few nanometers spatially) in a disordered system, well in the regime where entanglement, confinement, and particle interaction dominate the dynamics and kinetics. Measurements of the intermediate structure factor f(q,t) indicate that the particle dynamics differ from Stokes-Einstein Brownian motion and are explained in terms of viscoelastic effects and interparticle interactions.

Authors:
; ; ;  [1];  [1];  [2]
  1. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20951346
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 18; Other Information: DOI: 10.1103/PhysRevLett.98.185506; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BROWNIAN MOVEMENT; COMPOSITE MATERIALS; GOLD; INTERMEDIATE STRUCTURE; NANOSTRUCTURES; PARTICLE INTERACTIONS; POLYSTYRENE; QUANTUM ENTANGLEMENT; SMALL ANGLE SCATTERING; SPECTROSCOPY; THIN FILMS; TIME MEASUREMENT; X-RAY DIFFRACTION

Citation Formats

Narayanan, Suresh, Lee, Dong Ryeol, Li Xuefa, Wang Jin, Hagman, Aleta, and Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208. Particle Dynamics in Polymer-Metal Nanocomposite Thin Films on Nanometer-Length Scales. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.185506.
Narayanan, Suresh, Lee, Dong Ryeol, Li Xuefa, Wang Jin, Hagman, Aleta, & Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208. Particle Dynamics in Polymer-Metal Nanocomposite Thin Films on Nanometer-Length Scales. United States. doi:10.1103/PHYSREVLETT.98.185506.
Narayanan, Suresh, Lee, Dong Ryeol, Li Xuefa, Wang Jin, Hagman, Aleta, and Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208. Fri . "Particle Dynamics in Polymer-Metal Nanocomposite Thin Films on Nanometer-Length Scales". United States. doi:10.1103/PHYSREVLETT.98.185506.
@article{osti_20951346,
title = {Particle Dynamics in Polymer-Metal Nanocomposite Thin Films on Nanometer-Length Scales},
author = {Narayanan, Suresh and Lee, Dong Ryeol and Li Xuefa and Wang Jin and Hagman, Aleta and Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208},
abstractNote = {X-ray photon correlation spectroscopy was used in conjunction with resonance-enhanced grazing-incidence small-angle x-ray scattering to probe slow particle dynamics and kinetics in gold/polystyrene nanocomposite thin films. Such enhanced coherent scattering enables, for the first time, measurement of the particle dynamics at wave vectors up to {approx}1 nm{sup -1} (or a few nanometers spatially) in a disordered system, well in the regime where entanglement, confinement, and particle interaction dominate the dynamics and kinetics. Measurements of the intermediate structure factor f(q,t) indicate that the particle dynamics differ from Stokes-Einstein Brownian motion and are explained in terms of viscoelastic effects and interparticle interactions.},
doi = {10.1103/PHYSREVLETT.98.185506},
journal = {Physical Review Letters},
number = 18,
volume = 98,
place = {United States},
year = {Fri May 04 00:00:00 EDT 2007},
month = {Fri May 04 00:00:00 EDT 2007}
}