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Issue 18, 2018
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A built-in electric field with nanoscale distinction for cell behavior regulation

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Abstract

To mimic the electrical properties of collagen fibrils on a bone surface, a built-in nanoscale electric field is formed on the surface of a polypyrrole (PPy) coating-decorated potassium–sodium niobate (KNN) piezoceramic. With the fabrication strategy, the piezoelectricity of KNN after polarization results in the formation of an electric field on the surface, which could be regulated by adjusting the polarization process. Then, conductive PPy nanoarrays (CPNAs) are obtained on the surfaces of the KNN piezoceramics. The conductive PPy transports the electric field to the coating surface, and the nanoarray morphology results in variations in the surface potential, leading to a built-in nanoscale electric field. Biological characterization indicates that CPNAs exhibit acceptable biocompatibility. Moreover, the nanoscale electric field regulates cell behavior, and the relatively high surface potential promotes cell proliferation, cell attachment and osteogenic differentiation.

Graphical abstract: A built-in electric field with nanoscale distinction for cell behavior regulation

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Publication details

The article was received on 08 Jan 2018, accepted on 06 Apr 2018 and first published on 11 Apr 2018


Article type: Communication
DOI: 10.1039/C8TB00063H
Citation: J. Mater. Chem. B, 2018,6, 2723-2727
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    A built-in electric field with nanoscale distinction for cell behavior regulation

    J. Chen, W. Li, L. Zhou, Z. Zhou, G. Tan, D. Chen, R. Wang, P. Yu and C. Ning, J. Mater. Chem. B, 2018, 6, 2723
    DOI: 10.1039/C8TB00063H

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