Diphenylalanine peptide nanotube energy harvesters

Ju Hyuck Lee, Kwang Heo, Konstantin Schulz-Schönhagen, Ju Hun Lee, Malav S. Desai, Hyo Eon Jin, Seung Wuk Lee

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)

Abstract

Piezoelectric materials are excellent generators of clean energy, as they can harvest the ubiquitous vibrational and mechanical forces. We developed large-scale unidirectionally polarized, aligned diphenylalanine (FF) nanotubes and fabricated peptide-based piezoelectric energy harvesters. We first used the meniscus-driven self-assembly process to fabricate horizontally aligned FF nanotubes. The FF nanotubes exhibit piezoelectric properties as well as unidirectional polarization. In addition, the asymmetric shapes of the self-assembled FF nanotubes enable them to effectively translate external axial forces into shear deformation to generate electrical energy. The fabricated peptide-based piezoelectric energy harvesters can generate voltage, current, and power of up to 2.8 V, 37.4 nA, and 8.2 nW, respectively, with 42 N of force, and can power multiple liquid-crystal display panels. These peptide-based energy-harvesting materials will provide a compatible energy source for biomedical applications in the future.

Original languageEnglish
Pages (from-to)8138-8144
Number of pages7
JournalACS nano
Volume12
Issue number8
DOIs
Publication statusPublished - Aug 28 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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