A new class of tunable hypersonic phononic crystals based on polymer-tethered colloids
- Max Planck Inst. for Polymer Research, Mainz (Germany)
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Univ. of Le Havre, Le Havre (France)
- Max Planck Inst. for Polymer Research, Mainz (Germany); FORTH-IESL, Heraklion, (Greece)
The design and engineering of hybrid materials exhibiting tailored phononic band gaps are fundamentally relevant to innovative material technologies in areas ranging from acoustics to thermo-optic devices. Phononic hybridization gaps, originating from the anti-crossing between local resonant and propagating modes, have attracted particular interest because of their relative robustness to structural disorder and the associated benefit to ‘manufacturability’. Although hybridization gap materials are well known, their economic fabrication and efficient control of the gap frequency have remained elusive because of the limited property variability and expensive fabrication methodologies. Here we report a new strategy to realize hybridization gap materials by harnessing the ‘anisotropic elasticity’ across the particle–polymer interface in densely polymer-tethered colloidal particles. Theoretical and Brillouin scattering analysis confirm both the robustness to disorder and the tunability of the resulting hybridization gap and provide guidelines for the economic synthesis of new materials with deliberately controlled gap position and width frequencies.
- Research Organization:
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF)
- Grant/Contract Number:
- EE0006702; DMR-1410845; DMR-1501324
- OSTI ID:
- 1624004
- Journal Information:
- Nature Communications, Vol. 6, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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