Piezoelectricity in collagen type II fibrils measured by scanning probe microscopy

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Title: Piezoelectricity in collagen type II fibrils measured by scanning probe microscopy
Authors: Denning, Denise
Kilpatrick, J. I.
Hsu, T.
Rodriguez, Brian J.
et al.
Permanent link: http://hdl.handle.net/10197/5892
Date: 11-Aug-2014
Abstract: The converse piezoelectric effect in collagen type II fibrils, the main collagen constituent in cartilage, was investigated using piezoresponse force microscopy. The fibrils exhibited shear piezoelectric behavior similar to that previously reported in collagen type I fibrils and followed the same cantilever-fibril angle dependence present for type I. A uniform polarization directed from the amine to carboxyl termini, as seen for collagen type I, was observed in all type II fibrils studied. The shear piezoelectric coefficient, d 15, however, for type II was roughly 28–32% of the value measured for type I fibrils. Possible explanations for the reduced piezoelectric coefficient of type II collagen are provided.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: American Institute of Physics
Copyright (published version): 2014 AIP Publishing LLC
Keywords: Piezoelectric materials;Piezoresponse force microscopy
DOI: 10.1063/1.4891400
Language: en
Status of Item: Peer reviewed
Appears in Collections:Physics Research Collection

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