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

63 Scopus citations

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Measuring the coordination number and entropy of a 3D jammed emulsion packing by confocal microscopy'. Together they form a unique fingerprint.

  • Cite this