Sökning: WFRF:(Stradner Anna) > Cluster-Driven Dyna...
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000 | 03250naa a2200385 4500 | |
001 | oai:lup.lub.lu.se:a031e764-cb69-4308-b569-f5bf81e79afa | |
003 | SwePub | |
008 | 160401s2011 | |||||||||||000 ||eng| | |
024 | 7 | a https://lup.lub.lu.se/record/19858892 URI |
024 | 7 | a https://doi.org/10.1021/jp112180p2 DOI |
040 | a (SwePub)lu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Cardinaux, Frederic4 aut |
245 | 1 0 | a Cluster-Driven Dynamical Arrest in Concentrated Lysozyme Solutions |
264 | c 2011-04-29 | |
264 | 1 | b American Chemical Society (ACS),c 2011 |
520 | a We present a detailed experimental and numerical study of the structural and dynamical properties of salt-free lysozyme solutions. In particular, by combining small-angle X-ray scattering (SAXS) data with neutron spin echo (NSE) and rheology experiments, we are able to identify that an arrest transition takes place at intermediate densities, driven by the slowing down of the cluster motion. Using an effective pair potential among proteins, based on the combination of short-range attraction and long-range repulsion, we account remarkably well for the peculiar volume fraction dependence of the effective structure factor measured by SAXS. We show that a transition from a monomer to a cluster-dominated fluid happens at volume fractions larger than phi greater than or similar to 0.05 where the close agreement between NSE measurements and Brownian dynamics simulations confirms the transient nature of the clusters. Clusters even stay transient above the geometric percolation found in simulation at phi > 0.15, though NSE reveals a cluster lifetime that becomes increasingly large and indicates a divergence of the diffusivity at phi greater than or similar to 0.26. Macroscopic measurements of the viscosity confirm this transition where the long-lived-nature of the clusters is at the origin of the simultaneous dynamical arrest at all length scales. | |
650 | 7 | a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng |
700 | 1 | a Zaccarelli, Emanuela4 aut |
700 | 1 | a Stradner, Anna4 aut |
700 | 1 | a Bucciarelli, Saskia4 aut |
700 | 1 | a Farago, Bela4 aut |
700 | 1 | a Egelhaaf, Stefan U.4 aut |
700 | 1 | a Sciortino, Francesco4 aut |
700 | 1 | a Schurtenberger, Peteru Lund University,Lunds universitet,Fysikalisk kemi,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Physical Chemistry,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)fkem-psh |
710 | 2 | a Fysikalisk kemib Enheten för fysikalisk och teoretisk kemi4 org |
773 | 0 | t The Journal of Physical Chemistry Part Bd : American Chemical Society (ACS)g 115:22, s. 7227-7237q 115:22<7227-7237x 1520-5207x 1520-6106 |
856 | 4 | u http://dx.doi.org/10.1021/jp112180py FULLTEXT |
856 | 4 | u http://doc.rero.ch/record/27237/files/car_cdd.pdf |
856 | 4 8 | u https://lup.lub.lu.se/record/1985889 |
856 | 4 8 | u https://doi.org/10.1021/jp112180p |
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