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Validity of the Sto...
Validity of the Stokes-Einstein Relation in Soft Colloids up to the Glass Transition
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Gupta, Sudipta (författare)
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Stellbrink, Joerg (författare)
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Zaccarelli, Emanuela (författare)
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Likos, Christos N. (författare)
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Camargo, Manuel (författare)
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- Holmqvist, Peter (författare)
- 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, LTH
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Allgaier, Juergen (författare)
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Willner, Lutz (författare)
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Richter, Dieter (författare)
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(creator_code:org_t)
- 2015
- 2015
- Engelska.
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Ingår i: Physical Review Letters. - 1079-7114. ; 115:12
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We investigate the dynamics of kinetically frozen block copolymer micelles of different softness across a wide range of particle concentrations, from the fluid to the onset of glassy behavior, through a combination of rheology, dynamic light scattering, and pulsed field gradient NMR spectroscopy. We additionally perform Brownian dynamics simulations based on an ultrasoft coarse- grained potential, which are found to be in quantitative agreement with experiments, capturing even the very details of dynamic structure factors S(Q, t) on approaching the glass transition. We provide evidence that for these systems the Stokes-Einstein relation holds up to the glass transition; given that it is violated for dense suspensions of hard colloids, our findings suggest that its validity is an intriguing signature of ultrasoft interactions.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
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