6533b835fe1ef96bd129eaa4
RESEARCH PRODUCT
Re-entrant glass transition in a colloid-polymer mixture with depletion attractions.
Eckhard BartschT. Eckertsubject
chemistry.chemical_classificationMaterials sciencedigestive oral and skin physiologyGeneral Physics and AstronomyFOS: Physical sciencesPolymerHard spheresDisordered Systems and Neural Networks (cond-mat.dis-nn)Condensed Matter - Soft Condensed MatterCondensed Matter - Disordered Systems and Neural NetworksCondensed Matter::Disordered Systems and Neural NetworksLight scatteringSuspension (chemistry)Condensed Matter::Soft Condensed MatterColloidchemistryChemical physicsSoft Condensed Matter (cond-mat.soft)Re entrantPolymer blendGlass transitiondescription
Performing light scattering experiments we show that introducing short-ranged attraction to a colloidal suspension of nearly hard spheres by addition of free polymer produces new glass transition phenomena. We observe a dramatic acceleration of the density fluctuations amounting to the melting of a colloidal glass. Increasing the strength of the attractions the system freezes into another nonergodic state sharing some qualitative features with gel states occurring at lower colloid packing fractions. This reentrant glass transition is in qualitative agreement with recent theoretical predictions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-03-25 | Physical review letters |