Evaporation-Driven Crystallization of Diphenylalanine Microtubes for Microelectronic Applications

Self-assembly of supramolecular biomaterials such as proteins or peptides has revealed great potential for their use in various applications ranging from scaffolds for cell culture to light-emitting diodes and piezoelectric transducers. Many of these applications require controlled growth,of individ...

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Bibliographic Details
Main Author: Nuraeva, Alla (author)
Other Authors: Vasilev, Semen (author), Vasileva, Dania (author), Zelenovskiy, Pavel (author), Chezganov, Dmitry (author), Esin, Alexander (author), Kopyl, Svetlana (author), Romanyuk, Konstantin (author), Shur, Vladimir Ya. (author), Kholkin, Andrei L. (author)
Format: article
Language:eng
Published: 1000
Subjects:
ASSEMBLED PEPTIDE NANOTUBES
WATER
NANOSTRUCTURES
GROWTH
NANOMATERIALS
LUMINESCENCE
DIPEPTIDES
NANOWIRES
CRYSTALS
CHAINS
Online Access:http://hdl.handle.net/10773/20825
Country:Portugal
Oai:oai:ria.ua.pt:10773/20825
Description
Summary:Self-assembly of supramolecular biomaterials such as proteins or peptides has revealed great potential for their use in various applications ranging from scaffolds for cell culture to light-emitting diodes and piezoelectric transducers. Many of these applications require controlled growth,of individual objects in the configuration allowing simple transfer to the desired device. In this work, we grew millimeter-long diphenylalanine (FF) self-assembled microtubes with high aspect ratio via evaporation-driven crystallization of nonsaturated FF solutions, making use of the Marangoni flow in the drying droplets. The growth mechanism was investigated by measuring the microtube length as a function of time. Jerky (steplike) growth behavior was observed and explained by a self-activated process in which additional activation energy is provided through condensation. The calculated growth rate due to the diffusion-controlled process is in agreement with the experimentally measured values. The grown microtubes were successfully transferred to metallized patterned substrates, and their specific conductivity and piezoelectric properties were evaluated as a function of the applied voltage and frequency. A number of piezoelectric resonances were observed and attributed to different vibrational modes excited by the piezoelectric effect inherent to the FF structure.

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