Dynamic heterogeneity in complex interfaces of soft interface-dominated materials

Scientific Reports
L M C SagisKarin Schroen

Abstract

Complex interfaces stabilized by proteins, polymers or nanoparticles, have a much richer dynamics than those stabilized by simple surfactants. By subjecting fluid-fluid interfaces to step extension-compression deformations, we show that in general these complex interfaces have dynamic heterogeneity in their relaxation response that is well described by a Kohlrausch-Williams-Watts function, with stretch exponent β between 0.4-0.6 for extension, and 0.6-1.0 for compression. The difference in β between expansion and compression points to an asymmetry in the dynamics. Using atomic force microscopy and simulations we prove that the dynamic heterogeneity is intimately related to interfacial structural heterogeneity and show that the dominant mode for stretched exponential relaxation is momentum transfer between bulk and interface, a mechanism which has so far largely been ignored in experimental surface rheology. We describe how its rate constant can be determined using molecular dynamics simulations. These interfaces clearly behave like disordered viscoelastic solids and need to be described substantially different from the 2d homogeneous viscoelastic fluids typically formed by simple surfactants.

References

Nov 1, 1973·Zeitschrift Für Naturforschung. Teil C: Biochemie, Biophysik, Biologie, Virologie·W Helfrich
Jul 15, 2003·Physical Review Letters·Pietro CicutaGerald G Fuller
Feb 1, 1986·Proceedings of the National Academy of Sciences of the United States of America·J Klafter, M F Shlesinger
May 17, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Sven ReynaertJan Vermant
Oct 4, 2006·The Journal of Chemical Physics·B U Felderhof
Jan 20, 2007·Journal of Colloid and Interface Science·Pietro Cicuta
May 14, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Basavaraj MadivalaJan Vermant
Dec 19, 2009·Nature Materials·Michael Urbakh, Ernst Meyer
Feb 15, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Iván López-MonteroFrancisco Monroy
Feb 22, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Cameron P GlagolaJennifer L Logan
Apr 5, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Zhili WanLeonard Martin Sagis
May 16, 2017·Journal of Colloid and Interface Science·Oscar F Aguilar GutierrezAlejandro D Rey
Nov 28, 2017·Journal of Colloid and Interface Science·Jonas HegemannJan Kierfeld
Jun 5, 2018·Physical Chemistry Chemical Physics : PCCP·Ahmad MoghimikheirabadiPatrick Ilg
Sep 19, 2018·Journal of Colloid and Interface Science·Alan M LuoLeonard M C Sagis

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Citations

Jul 7, 2020·Soft Matter·Felipe L PaivaShaghayegh Khani
Nov 8, 2020·Polymers·Ahmad MoghimikheirabadiArgyrios V Karatrantos
Jun 14, 2021·Journal of Colloid and Interface Science·Jack YangLeonard M C Sagis
Jun 9, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Eduardo GuzmánRamón G Rubio
Mar 24, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Felipe L PaivaShaghayegh Khani
Aug 13, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Zainab O MakindeDavid E Williams
Oct 9, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Ahmad MoghimikheirabadiLeonard M C Sagis

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Methods Mentioned

BETA
atomic force microscopy
delamination
AFM
rheology

Software Mentioned

MATLAB
LAMMPS
Nanoscope Analysis

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