Measuring the coordination number and entropy of a 3D jammed emulsion packing by confocal microscopy

Jasna Brujić, Chaoming Song, Ping Wang, Christopher Briscoe, Guillaume Marty, Hernán A. Makse

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Jammed matter is by definition impenetrable to light, such that little is known about the geometry of jammed systems. Using confocal microscopy to image an emulsion in 3D, we first explain the origin of the enhanced fluorescence at the droplet contacts and then determine the contact network inside the model frictionless system. This enables the experimental determination of the average coordination number Z which agrees with the isostatic predicted value of Z 6. Furthermore, we calculate the entropy of the packing from the network of contacts.

Original languageEnglish (US)
Article number248001
JournalPhysical Review Letters
Volume98
Issue number24
DOIs
StatePublished - Jun 15 2007
Externally publishedYes

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coordination number
emulsions
entropy
microscopy
fluorescence
geometry

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Measuring the coordination number and entropy of a 3D jammed emulsion packing by confocal microscopy. / Brujić, Jasna; Song, Chaoming; Wang, Ping; Briscoe, Christopher; Marty, Guillaume; Makse, Hernán A.

In: Physical Review Letters, Vol. 98, No. 24, 248001, 15.06.2007.

Research output: Contribution to journalArticle

Brujić, Jasna ; Song, Chaoming ; Wang, Ping ; Briscoe, Christopher ; Marty, Guillaume ; Makse, Hernán A. / Measuring the coordination number and entropy of a 3D jammed emulsion packing by confocal microscopy. In: Physical Review Letters. 2007 ; Vol. 98, No. 24.
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