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Sökning: WFRF:(Stradner Anna) > Cluster-Driven Dyna...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003250naa a2200385 4500
001oai:lup.lub.lu.se:a031e764-cb69-4308-b569-f5bf81e79afa
003SwePub
008160401s2011 | |||||||||||000 ||eng|
0247 a https://lup.lub.lu.se/record/19858892 URI
0247 a https://doi.org/10.1021/jp112180p2 DOI
040 a (SwePub)lu
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Cardinaux, Frederic4 aut
2451 0a Cluster-Driven Dynamical Arrest in Concentrated Lysozyme Solutions
264 c 2011-04-29
264 1b 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 7a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng
7001 a Zaccarelli, Emanuela4 aut
7001 a Stradner, Anna4 aut
7001 a Bucciarelli, Saskia4 aut
7001 a Farago, Bela4 aut
7001 a Egelhaaf, Stefan U.4 aut
7001 a Sciortino, Francesco4 aut
7001 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
7102 a Fysikalisk kemib Enheten för fysikalisk och teoretisk kemi4 org
7730 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
8564 u http://dx.doi.org/10.1021/jp112180py FULLTEXT
8564 u http://doc.rero.ch/record/27237/files/car_cdd.pdf
8564 8u https://lup.lub.lu.se/record/1985889
8564 8u https://doi.org/10.1021/jp112180p

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