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Phononics

Colloidal crystals go hypersonic

Hypersonic phononic crystals provide a wealth of opportunities to reflect, focus and localize high-frequency acoustic waves. Using colloidal crystals for this purpose provides opportunities for simplified fabrication and flexible tuning of the properties.

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Figure 1: Phononic bandgaps.

References

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Thomas, E., Gorishnyy, T. & Maldovan, M. Colloidal crystals go hypersonic. Nature Mater 5, 773–774 (2006). https://doi.org/10.1038/nmat1744

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