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Title: Hard-sphere-like dynamics in highly concentrated alpha-crystallin suspensions

Journal Article · · Physical Review E
 [1];  [1];  [1];  [2];  [1];  [1];  [3];  [3];  [3];  [3];  [4];  [5];  [5];  [5];  [5]
  1. Northern Illinois Univ., DeKalb, IL (United States)
  2. Rochester Inst. of Technology, Rochester, NY (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
  4. Univ. Paris-Sud, Orsay (France)
  5. AGH - Univ. of Science and Technology, Krakow (Poland)

The dynamics of concentrated suspensions of the eye-lens protein alpha crystallin have been measured using x-ray photon correlation spectroscopy. Measurements were made at wave vectors corresponding to the first peak in the hard-sphere structure factor and volume fractions close to the critical volume fraction for the glass transition. Langevin dynamics simulations were also performed in parallel to the experiments. The intermediate scattering function f(q,τ) could be fit using a stretched exponential decay for both experiments and numerical simulations. The measured relaxation times show good agreement with simulations for polydisperse hard-sphere colloids.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Institutes of Health (NIH)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1427480
Alternate ID(s):
OSTI ID: 1419369
Journal Information:
Physical Review E, Vol. 97, Issue 2; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Figures / Tables (4)