Journal Article

FZJ-2018-02239

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Crystal-to-Crystal Transition of Ultrasoft Colloids under Shear

Ruiz-Franco, J. ; Marakis, J. ; Gnan, N. ; Kohlbrecher, J. ; Gauthier, M. ; Lettinga, M. P.FZJ* ; Vlassopoulos, D. (Corresponding author) ; Zaccarelli, E. (Corresponding author)

2018
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/17949  doi:10.1103/PhysRevLett.120.078003

Abstract: Ultrasoft colloids typically do not spontaneously crystallize, but rather vitrify, at high concentrations. Combining in situ rheo–small-angle-neutron-scattering experiments and numerical simulations we show that shear facilitates crystallization of colloidal star polymers in the vicinity of their glass transition. With increasing shear rate well beyond rheological yielding, a transition is found from an initial bcc-dominated structure to an fcc-dominated one. This crystal-to-crystal transition is not accompanied by intermediate melting but occurs via a sudden reorganization of the crystal structure. Our results provide a new avenue to tailor colloidal crystallization and the crystal-to-crystal transition at the molecular level by coupling softness and shear.

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Contributing Institute(s):

1. Weiche Materie (ICS-3)

Research Program(s):

1. 551 - Functional Macromolecules and Complexes (POF3-551) (POF3-551)

Appears in the scientific report 2018

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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