Low-frequency vibrations of soft colloidal glasses

K. Chen, W.G. Ellenbroek, Z. Zhang, D.T.N. Chen, P.J. Yunker, S. Henkes, C. Brito, O. Dauchot, W. van Saarloos, A.J. Liu, A.G. Yodh

Research output: Contribution to journalArticleAcademicpeer-review

152 Citations (Scopus)


We conduct experiments on two-dimensional packings of colloidal thermosensitive hydrogel particles whose packing fraction can be tuned above the jamming transition by varying the temperature. By measuring displacement correlations between particles, we extract the vibrational properties of a corresponding "shadow" system with the same configuration and interactions, but for which the dynamics of the particles are undamped. The vibrational properties are very similar to those predicted for zero-temperature sphere packings and found in atomic and molecular glasses; there is a boson peak at low frequency that shifts to higher frequency as the system is compressed above the jamming transition.

Original languageEnglish
Article number025501
JournalPhysical Review Letters
Issue number2
Publication statusPublished - 9 Jul 2010
Externally publishedYes


Dive into the research topics of 'Low-frequency vibrations of soft colloidal glasses'. Together they form a unique fingerprint.

Cite this