Strong Piezoelectricity in Bioinspired Peptide Nanotubes
Strong Piezoelectricity in Bioinspired Peptide Nanotubes
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DOI：
10.1021/nn901327v
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发表时间：
2010-02-01
期刊：
影响因子：
17.1
通讯作者：
Rosenman, Gil
中科院分区：
文献类型：
--
作者：
Kholkin, Andrei;Amdursky, Nadav;Rosenman, Gil
We show anomalously strong shear piezoelectric activity in self-assembled diphenylalanine peptide nanotubes (PNTs), indicating electric polarization directed along the tube axis. Comparison with well-known piezoelectric LiNbO3 and lateral signal calibration yields sufficiently high effective piezoelectric coefficient values of at least 60 pm/V (shear response for tubes of approximate to 200 nm in diameter). PNTs demonstrate linear deformation without irreversible degradation in a broad range of driving voltages. The results open up a wide avenue for developing new generations of "green" piezoelectric materials and piezonanodevices based on bioactive tubular nanostructures potentially compatible with human tissue.
