Strong piezoelectricity in bioinspired peptide nanotubes

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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)610-614
Number of pages5
JournalACS Nano
Volume4
Issue number2
DOIs
StatePublished - 23 Feb 2010

Keywords

  • MEMS
  • Nanotubes
  • Peptides
  • Piezoelectricity
  • Piezoresponse force microscopy

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