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Dynamics and structure of an aging binary colloidal glass
- Source :
- Physical Review E. 78
- Publication Year :
- 2008
- Publisher :
- American Physical Society (APS), 2008.
-
Abstract
- We study aging in a colloidal suspension consisting of micron-sized particles in a liquid. This system is made glassy by increasing the particle concentration. We observe samples composed of particles of two sizes, with a size ratio of 1:2.1 and a volume fraction ratio 1:6, using fast laser scanning confocal microscopy. This technique yields real-time, three-dimensional movies deep inside the colloidal glass. Specifically, we look at how the size, motion and structural organization of the particles relate to the overall aging of the glass. Particles move in spatially heterogeneous cooperative groups. These mobile regions tend to be richer in small particles, and these small particles facilitate the motion of nearby particles of both sizes.<br />Comment: 7 pages; submitted to Phys. Rev. E. Revised with 1 new figure, improved text
- Subjects :
- Materials science
Structural organization
Dynamics (mechanics)
FOS: Physical sciences
Binary number
Nanotechnology
Disordered Systems and Neural Networks (cond-mat.dis-nn)
02 engineering and technology
Condensed Matter - Soft Condensed Matter
Condensed Matter - Disordered Systems and Neural Networks
021001 nanoscience & nanotechnology
01 natural sciences
Condensed Matter::Soft Condensed Matter
Colloid
Chemical physics
0103 physical sciences
Volume fraction
Confocal laser scanning microscopy
Soft Condensed Matter (cond-mat.soft)
Particle
Particle size
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 15502376 and 15393755
- Volume :
- 78
- Database :
- OpenAIRE
- Journal :
- Physical Review E
- Accession number :
- edsair.doi.dedup.....ab64fff1a1b238297e138f188578edfd