Three-dimensional ultrasonic colloidal crystals

Mihai Caleap; Bruce Drinkwater

doi:10.1016/j.crhy.2016.02.007

Three-dimensional ultrasonic colloidal crystals

Soft Condensed Matter 2016-03-17 v2 Materials Science

Authors: Mihai Caleap , Bruce Drinkwater

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Abstract

Colloidal assembly represents a powerful method for the fabrication of functional materials. In this article, we describe how acoustic radiation forces can guide the assembly of colloidal particles into structures that serve as microscopic elements in novel acoustic metadevices or act as phononic crystals. Using a simple three-dimensional orthogonal system, we show that a diversity of colloidal structures with orthorhombic symmetry can be assembled with megahertz-frequency (MHz) standing pressure waves. These structures allow rapid tuning of acoustic properties and provide a new platform for dynamic metamaterial applications.

Keywords

colloidal self-assembly crystal structure and quasicrystals acoustics

Cite

@article{arxiv.1507.06804,
  title  = {Three-dimensional ultrasonic colloidal crystals},
  author = {Mihai Caleap and Bruce Drinkwater},
  journal= {arXiv preprint arXiv:1507.06804},
  year   = {2016}
}

Comments

23 pages (including 12 figures)

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