期刊
NANO ENERGY
卷 17, 期 -, 页码 323-329出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2015.08.020
关键词
Piezoelectricity; Peptide; Polarization; Diphenylalanine; Microrods; Nanochannels
类别
资金
- Department of Mechanical Engineering
- College of Science and Engineering of the University of Minnesota
- NSF [ECCS-1150147]
- NSF IGERT Grant [DGE-1069104]
- NSF through the MRSEC program
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1150147] Funding Source: National Science Foundation
Energy harvesting with piezoelectric nanomaterials spurred the development of self-powered nanosystems, and piezoelectric biornaterials are expected to play an important role in the biomedical field. Bio-inspired piezoelectric diphenylalanine (FF) peptide microstructures were fabricated on various substrates through a novel epitaxial growth approach. The low-temperature process produced vertically aligned FF peptide microrods with hexagonally arranged nanochannels and uniform polarization. Direct measurement of the piezoelectricity was achieved for the first time from a solid FF peptide single crystal and yielded an effective piezoelectric coefficient d(33) at 9.9 pm/V. The dense and aligned FF peptide microrods are advantageous for energy and sensing applications. (C) 2015 Elsevier Ltd. All rights reserved.
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