TY  - JOUR
AU  - Stiakakis, E.
AU  - Erwin, B.M.
AU  - Vlassopoulos, D.
AU  - Cloitre, M.
AU  - Munam, A.
AU  - Gauthier, M.
AU  - Iatrou, H.
AU  - Hadjichristidis, N.
TI  - Probing glassy states in binary mixtures of soft interpenetrable colloids
JO  - Journal of physics / Condensed matter
VL  - 23
SN  - 0953-8984
CY  - Bristol
PB  - IOP Publ.
M1  - PreJuSER-15516
SP  - 234116
PY  - 2011
N1  - We thank A Larsen for assistance with the DLS measurements and C N Likos, G Fytas and A N Semenov for discussions. This work was supported in part by the EU (NoE Softcomp NMP3-CT-2004-502235 and project NANODIRECT CP-FP 213948-2) and by the Natural Sciences and Engineering Research Council of Canada (NSERC).
AB  - We present experimental evidence confirming the recently established rich dynamic state diagram of asymmetric binary mixtures of soft colloidal spheres. These mixtures consist of glassy suspensions of large star polymers to which different small stars are added at varying concentrations. Using rheology and dynamic light scattering measurements along with a simple phenomenological analysis, we show the existence of re-entrance and multiple glassy states, which exhibit distinct features. Cooperative diffusion, as a probe for star arm interpenetration, is proven to be sensitive to the formation of the liquid pockets which signal the melting of the large-star-glass upon addition of small stars. These results provide ample opportunities for tailoring the properties of soft colloidal glasses.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:21613695
UR  - <Go to ISI:>//WOS:000290957300019
DO  - DOI:10.1088/0953-8984/23/23/234116
UR  - https://juser.fz-juelich.de/record/15516
ER  -