Pyroelectric, piezoelectric, and photoeffects in hydroxyapatite thin films on silicon

S. B. Lang; S. A.M. Tofail; A. A. Gandhi; M. Gregor; C. Wolf-Brandstetter; J. Kost; S. Bauer; M. Krause

doi:10.1063/1.3571294

Pyroelectric, piezoelectric, and photoeffects in hydroxyapatite thin films on silicon

S. B. Lang, S. A.M. Tofail, A. A. Gandhi, M. Gregor, C. Wolf-Brandstetter, J. Kost, S. Bauer, M. Krause

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

82 Scopus citations

Abstract

Hydroxyapatite (HA) is the major component of bone and is used in artificial form in many biomedical applications. It was once believed to have a centrosymmetric crystal structure. In theoretical and experimental studies published in 2005, it was shown to have a monoclinic P ₂₁ structure. In the work reported here, 500 nm films of HA were spin-coated on silicon wafers. The materials were not poled. They had a nonuniform polarization distribution and exhibited pyroelectricity, piezoelectricity, and photoeffects. Structures of this type may have a number of technological applications.

Original language	English
Article number	123703
Journal	Applied Physics Letters
Volume	98
Issue number	12
DOIs	https://doi.org/10.1063/1.3571294
State	Published - 21 Mar 2011

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "Hydroxyapatite (HA) is the major component of bone and is used in artificial form in many biomedical applications. It was once believed to have a centrosymmetric crystal structure. In theoretical and experimental studies published in 2005, it was shown to have a monoclinic P 21 structure. In the work reported here, 500 nm films of HA were spin-coated on silicon wafers. The materials were not poled. They had a nonuniform polarization distribution and exhibited pyroelectricity, piezoelectricity, and photoeffects. Structures of this type may have a number of technological applications.",

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AU - Lang, S. B.

AU - Tofail, S. A.M.

AU - Gandhi, A. A.

AU - Gregor, M.

AU - Wolf-Brandstetter, C.

AU - Kost, J.

AU - Bauer, S.

AU - Krause, M.

N1 - Funding Information: This project has been funded with support from the European Commission (Grant No. EC NMP4-SL-2008-CP-212533-2—BioElectricSurface). This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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Pyroelectric, piezoelectric, and photoeffects in hydroxyapatite thin films on silicon

Abstract

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