期刊
ACS NANO
卷 4, 期 6, 页码 3471-3481出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn100519h
关键词
nanocomposites; mechanical properties; phononic dispersion relations; Brillouin light scattering
类别
资金
- German Research Foundation [1369, JO 370/2-1]
- Le Conseil Regional Nord-Pas de Calais
Anodic aluminum oxide (AAO) containing arrays of aligned cylindrical nanopores infiltrated with polymers is a well-defined model system for the study of hypersound propagation in polymer nanocomposites. Hypersonic phononic properties of AAO/polymer nanocomposites such as phonon localization and anisotropic sound propagation can be tailored by adjusting elastic contrast and density contrast between the components. Changes in density and elastic properties of the component located in the nanopores induced by phase transitions allow reversible modification of the phononic band structure and mode switching. As example in case, the crystallization and melting of poly(vinylidene difluoride) inside AAO was investigated.
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