Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102207
Title: Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes
Authors: Esin, A.
Baturin, I.
Nikitin, T.
Vasilev, S.
Salehli, F.
Shur, V. Ya.
Kholkin, A. L.
Шур, В. Я.
Issue Date: 2016
Publisher: American Institute of Physics Inc.
Citation: Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes / A. Esin, I. Baturin, T. Nikitin, et al. — DOI 10.1063/1.4962652 // Applied Physics Letters. — 2016. — Vol. 109. — Iss. 14. — 142902.
Abstract: The natural ability of peptides and proteins to self-assemble into elongated fibrils is associated with several neurogenerative diseases. Diphenylalanine (FF) tubular structures that have the same structural motif as in Aβ-amyloid peptide (involved in Alzheimer's disease) are shown to possess remarkable physical properties ranging from piezoelectricity to electrochemical activities. In this work, we also discover a significant pyroelectric activity and measure the temperature dependence of the pyroelectric coefficient in the temperature range of 20-100 °C. Pyroelectric activity decreases with temperature contrary to most ferroelectric materials and significant relaxation of pyrocurrent is observed on cooling after heating above 50 °C. This unusual behavior is assigned to the temperature-induced disorder of water molecules inside the nanochannels. Pyroelectric coefficient and current and voltage figures of merit are estimated and future applications of pyroelectric peptide nanostructures in biomedical applications are outlined. © 2016 Author(s).
Keywords: CRYSTALLOGRAPHY
MEDICAL APPLICATIONS
MOLECULES
NEURODEGENERATIVE DISEASES
PEPTIDES
TEMPERATURE DISTRIBUTION
ALZHEIMER'S DISEASE
BIOMEDICAL APPLICATIONS
ELECTROCHEMICAL ACTIVITIES
FUTURE APPLICATIONS
NEUROGENERATIVE DISEASE
PYROELECTRIC COEFFICIENTS
TEMPERATURE DEPENDENCE
TEMPERATURE-INDUCED
FERROELECTRIC MATERIALS
URI: http://hdl.handle.net/10995/102207
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84990030087
PURE ID: 1180903
621f520f-4264-45e6-a90d-007709247d90
ISSN: 36951
DOI: 10.1063/1.4962652
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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