Strong Piezoelectricity in Bioinspired Peptide Nanotubes

resumo

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.

palavras-chave

FORCE MICROSCOPY; BA(NO2)2.H2O; CONSTANTS; COLLAGEN; PROGRESS; CS2S2O6; BONE

categoria

Chemistry; Science & Technology - Other Topics; Materials Science

autores

Kholkin, A; Amdursky, N; Bdikin, I; Gazit, E; Rosenman, G

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