Unexpected Decoupling of Stretching and Bending Modes in Protein Gels
Gibaud, Thomas ; Zaccone, Alessio ; Del Gado, Emanuela ; Trappe, Veronique and Schurtenberger, Peter LU
(2013)
In Physical Review Letters
110(5).
- Abstract
- We show that gels formed by arrested spinodal decomposition of protein solutions exhibit elastic properties in two distinct frequency domains, both elastic moduli exhibiting a remarkably strong dependence on volume fraction. Considering the large difference between the protein size and the characteristic length of the network we model the gels as porous media and show that the high and low frequency elastic moduli can be respectively attributed to stretching and bending modes. The unexpected decoupling of the two modes in the frequency domain is attributed to the length scale involved: while stretching mainly relates to the relative displacement of two particles, bending involves the deformation of a strand with a thickness of the order of... (More)
- We show that gels formed by arrested spinodal decomposition of protein solutions exhibit elastic properties in two distinct frequency domains, both elastic moduli exhibiting a remarkably strong dependence on volume fraction. Considering the large difference between the protein size and the characteristic length of the network we model the gels as porous media and show that the high and low frequency elastic moduli can be respectively attributed to stretching and bending modes. The unexpected decoupling of the two modes in the frequency domain is attributed to the length scale involved: while stretching mainly relates to the relative displacement of two particles, bending involves the deformation of a strand with a thickness of the order of a thousand particle diameters. DOI: 10.1103/PhysRevLett.110.058303 (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3590273
- author
- Gibaud, Thomas
; Zaccone, Alessio
; Del Gado, Emanuela
; Trappe, Veronique
and Schurtenberger, Peter
LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 110
- issue
- 5
- article number
- 058303
- publisher
- American Physical Society
- external identifiers
-
- wos:000314231800016
- scopus:84873168722
- pmid:23414053
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.110.058303
- language
- English
- LU publication?
- yes
- id
- 70e14048-1da8-4fc2-8f11-67dc7f417e11 (old id 3590273)
- date added to LUP
- 2016-04-01 10:43:12
- date last changed
- 2023-08-31 09:44:26
@article{70e14048-1da8-4fc2-8f11-67dc7f417e11,
abstract = {{We show that gels formed by arrested spinodal decomposition of protein solutions exhibit elastic properties in two distinct frequency domains, both elastic moduli exhibiting a remarkably strong dependence on volume fraction. Considering the large difference between the protein size and the characteristic length of the network we model the gels as porous media and show that the high and low frequency elastic moduli can be respectively attributed to stretching and bending modes. The unexpected decoupling of the two modes in the frequency domain is attributed to the length scale involved: while stretching mainly relates to the relative displacement of two particles, bending involves the deformation of a strand with a thickness of the order of a thousand particle diameters. DOI: 10.1103/PhysRevLett.110.058303}},
author = {{Gibaud, Thomas and Zaccone, Alessio and Del Gado, Emanuela and Trappe, Veronique and Schurtenberger, Peter}},
issn = {{1079-7114}},
language = {{eng}},
number = {{5}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Unexpected Decoupling of Stretching and Bending Modes in Protein Gels}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.110.058303}},
doi = {{10.1103/PhysRevLett.110.058303}},
volume = {{110}},
year = {{2013}},
}