Mechanoelectrical transduction in the hydrogel-based biomimetic sensors / Blyakhman F. A.,Safronov A. P.,Zubarev A. Yu.,Shklyar T. F.,Dinislamova O. A.,Lopez-Lopez M. T. // SENSORS AND ACTUATORS A-PHYSICAL. - 2016. - V. 248, l. . - P. 54-61.

ISSN/EISSN:

0924-4247 / нет данных

Type:

Article

Abstract:

The study addresses the phenomenon of mechanoelectrical transduction in polyelectrolyte hydrogels and, in particular, the search of the driving force for the change of the electrical potential of a gel under the applied mechanical stretch. Polyelectrolyte gels of calcium and magnesium salts of polymethacrylic acid were synthesized by the radical polymerization in water solution. Their electrical potential measured by microcapillary electrodes was negative and fall within 100-140 mV range depending on the nature of a counterion and the networking density of a gel. The rectangular samples (similar to 10 mm in length and 2 x 2 mm in cross-section) of gel-based sensors underwent the dynamic axial deformation, and the simultaneous monitoring of their geometrical dimensions and the electrical potential was performed. Sensor elongation resulted in the overall increase of gel volume, and it was always accompanied by the gel potential change toward the depolarization (diminishing of the negative values). Theoretical model based on the assumption of the total electrical charge conservation in the course of the dynamic deformation of a filament was proposed to describe the dependence of the electrical potential of a gel on its volume. Good agreement between the predictions of the model and the experimental trend was shown. The proposed mechanism of mechanoelectrical transduction based on the stretch-dependant volume changes in polyelectrolyte hydrogels might be useful to understand the nature of mechanical sensing in much more complex biological gels like the cell cytoskeleton. (C) 2016 Elsevier B.V. All rights reserved.

Author keywords:

Biomimetic sensors; Polyelectrolyte hydrogel; Electrical potential; Mechanical deformation; Depolarization; Modeling POLYELECTROLYTE HYDROGELS; MOLECULAR-BASIS; CELLS

DOI:

10.1016/j.sna.2016.06.020

Web of Science ID:

ISI:000383940500008

Соавторы в МНС:

Другие поля

Поле	Значение
Month	SEP 1
Publisher	ELSEVIER SCIENCE SA
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
Keywords-Plus	POLYELECTROLYTE HYDROGELS; MOLECULAR-BASIS; CELLS
Research-Areas	Engineering; Instruments \& Instrumentation
Web-of-Science-Categories	Engineering, Electrical \& Electronic; Instruments \& Instrumentation
Author-Email	Feliks.Blyakhman@urfu.ru
ResearcherID-Numbers	Lopez-Lopez, Modesto T/K-7327-2012
ORCID-Numbers	Lopez-Lopez, Modesto T/0000-0002-9068-7795 Blyakhman, Felix/0000-0003-4434-2873
Funding-Acknowledgement	Russian Scientific Fund {[}14-19-00989]; MINECO, Spain {[}FIS2013-41821-R]
Funding-Text	This work has been done under the financial support of the Russian Scientific Fund, project 14-19-00989. One of us (M.T. Lopez-Lopez) has been supported by the Grant FIS2013-41821-R (MINECO, Spain).
Number-of-Cited-References	21
Usage-Count-Last-180-days	6
Usage-Count-Since-2013	13
Journal-ISO	Sens. Actuator A-Phys.
Doc-Delivery-Number	DW8YD