Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes / Esin A.,Baturin I.,Nikitin T.,Vasilev S.,Salehli F.,Shur V. Ya.,Kholkin A. L. // APPLIED PHYSICS LETTERS. - 2016. - V. 109, l. 14.

ISSN/EISSN:

0003-6951 / 1077-3118

Type:

Article

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 Ab-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 degrees C. Pyroelectric activity decreases with temperature contrary to most ferroelectric materials and significant relaxation of pyrocurrent is observed on cooling after heating above 50 degrees 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. Published by AIP Publishing.

Author keywords:

PEPTIDE NANOTUBES; NANOSTRUCTURES; TEMPERATURE; NANOWIRES; ENERGY; WATER

DOI:

10.1063/1.4962652

Web of Science ID:

ISI:000386152800038

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT 3
Publisher	AMER INST PHYSICS
Address	1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Language	English
Article-Number	142902
EISSN	1077-3118
Keywords-Plus	PEPTIDE NANOTUBES; NANOSTRUCTURES; TEMPERATURE; NANOWIRES; ENERGY; WATER
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	kholkin@ua.pt
ResearcherID-Numbers	Vasilev, Semen/L-8334-2016 Kholkin, Andrei/G-5834-2010 Baturin, Ivan/B-1164-2008 Shur, Vladimir/J-9078-2015 Nikitin, Timur/K-1463-2014
ORCID-Numbers	Vasilev, Semen/0000-0002-3103-1438 Kholkin, Andrei/0000-0003-3432-7610 Baturin, Ivan/0000-0002-7033-6103 Nikitin, Timur/0000-0002-0907-5936
Funding-Acknowledgement	Turkish-Portuguese Project {[}TUBITAK/0006/2014]; national funds through FCT/MEC {[}FCT UID/CTM/50011/2013]; FEDER; Russian Federation {[}14.Y30.15.6554-MK]
Funding-Text	F.S. and A.K. thank the Turkish-Portuguese Project No. TUBITAK/0006/2014 for the financial support. A.K. acknowledges CICECO-Aveiro Institute of Materials (Ref. FCT UID/CTM/50011/2013) financed by national funds through the FCT/MEC and, when applicable, co-financed by FEDER under the PT2020 Partnership Agreement. S.V. was supported by the President of Russian Federation grant for young scientists (Contract No. 14.Y30.15.6554-MK). The equipment of the Ural Center for Shared Use ``Modern Nanotechnology{''} of Ural Federal University was used.
Number-of-Cited-References	37
Usage-Count-Last-180-days	7
Usage-Count-Since-2013	18
Journal-ISO	Appl. Phys. Lett.
Doc-Delivery-Number	DZ8WJ