Phonons in an entropic crystal

Zhengdong Cheng, Jixiang Zhu, William B. Russel, P. M. Chaikin

    Research output: Contribution to journalArticlepeer-review


    Colloidal crystals for 0.7 μm PMMA/PHSA spheres were fabricated using temperature gradient control and density matching. It was found that the structure of the resulting crystals is rchp. A new dynamic light scattering technique was used to account for the single particle and lattice dynamics of hard sphere crystals just on the solid side of melting. These entrophic crystals were found to exhibit short wavelength phonons with a similar dispersion to conventional materials.

    Original languageEnglish (US)
    Pages (from-to)1460-1463
    Number of pages4
    JournalPhysical Review Letters
    Issue number7
    StatePublished - Aug 14 2000

    ASJC Scopus subject areas

    • General Physics and Astronomy


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