Strong piezoelectricity in bioinspired peptide nanotubes

Andrei Kholkin; Nadav Amdursky; Igor Bdikin; Ehud Gazit; Gil Rosenman

doi:10.1021/nn901327v

Strong piezoelectricity in bioinspired peptide nanotubes

Andrei Kholkin, Nadav Amdursky, Igor Bdikin, Ehud Gazit, Gil Rosenman

Research output: Contribution to journal › Article › peer-review

Abstract

We show anomalously strong shear piezoelectric activity in self-assembled diphenylalanine peptide nanotubes (PNTs), indicating electric polarization directed along the tube axis. Comparison with wellknown piezoelectric LiNbO ₃ and lateral signal calibration yields sufficiently high effective piezoelectric coefficient values of at least 60 pm/V (shear response for tubes of≈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.

Original language	English
Pages (from-to)	610-614
Number of pages	5
Journal	ACS Nano
Volume	4
Issue number	2
DOIs	https://doi.org/10.1021/nn901327v
State	Published - 23 Feb 2010

Keywords

MEMS
Nanotubes
Peptides
Piezoelectricity
Piezoresponse force microscopy

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10.1021/nn901327v

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AU - Amdursky, Nadav

AU - Bdikin, Igor

AU - Gazit, Ehud

AU - Rosenman, Gil

PY - 2010/2/23

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N2 - We show anomalously strong shear piezoelectric activity in self-assembled diphenylalanine peptide nanotubes (PNTs), indicating electric polarization directed along the tube axis. Comparison with wellknown piezoelectric LiNbO 3 and lateral signal calibration yields sufficiently high effective piezoelectric coefficient values of at least 60 pm/V (shear response for tubes of≈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.

AB - We show anomalously strong shear piezoelectric activity in self-assembled diphenylalanine peptide nanotubes (PNTs), indicating electric polarization directed along the tube axis. Comparison with wellknown piezoelectric LiNbO 3 and lateral signal calibration yields sufficiently high effective piezoelectric coefficient values of at least 60 pm/V (shear response for tubes of≈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.

KW - MEMS

KW - Nanotubes

KW - Peptides

KW - Piezoelectricity

KW - Piezoresponse force microscopy

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Strong piezoelectricity in bioinspired peptide nanotubes

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