Multimaterial piezoelectric fibres
- 11 July 2010
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Materials
- Vol. 9 (8), 643-648
- https://doi.org/10.1038/nmat2792
Abstract
Fibres are typically used as passive devices, whether in fibre-optical cables used in telecommunciations or as yarns for clothing. The demonstration of polymer-based piezoelectric fibres that can be drawn to tens of metres in length, and whose acoustic response can be actively controlled, suggests possible applications in, for example, medical imaging or acoustic sensing. Fibre materials span a broad range of applications ranging from simple textile yarns to complex modern fibre-optic communication systems. Throughout their history, a key premise has remained essentially unchanged: fibres are static devices, incapable of controllably changing their properties over a wide range of frequencies. A number of approaches to realizing time-dependent variations in fibres have emerged, including refractive index modulation1,2,3,4, nonlinear optical mechanisms in silica glass fibres5,6,7,8 and electroactively modulated polymer fibres9. These approaches have been limited primarily because of the inert nature of traditional glassy fibre materials. Here we report the composition of a phase internal to a composite fibre structure that is simultaneously crystalline and non-centrosymmetric. A ferroelectric polymer layer of 30 μm thickness is spatially confined and electrically contacted by internal viscous electrodes and encapsulated in an insulating polymer cladding hundreds of micrometres in diameter. The structure is thermally drawn in its entirety from a macroscopic preform, yielding tens of metres of piezoelectric fibre. The fibres show a piezoelectric response and acoustic transduction from kilohertz to megahertz frequencies. A single-fibre electrically driven device containing a high-quality-factor Fabry–Perot optical resonator and a piezoelectric transducer is fabricated and measured.Keywords
This publication has 27 references indexed in Scilit:
- Saving livesNature Photonics, 2008
- Static and Dynamic Properties of Optical Microcavities in Photonic Bandgap YarnsAdvanced Materials, 2003
- Integrated all-fiber variable attenuator based on hybrid microstructure fiberApplied Physics Letters, 2001
- Measurement of the refractive-index modulation generated by electrostriction-induced acoustic waves in optical fibersOptics Letters, 1996
- Ferroelectric properties of vinylidene fluoride copolymersPhase Transitions, 1989
- Generation of permanent optically induced second-order nonlinearities in optical fibers by polingOptics Letters, 1988
- Piezoelectricity and related properties of vinylidene fluoride and trifluoroethylene copolymersJournal of Applied Physics, 1986
- Broadband metal/glass single-mode fibre polarisersElectronics Letters, 1986
- Ferroelectric properties of poly(vinylidenefluoride-trifluoroethylene) copolymer thin filmsApplied Physics Letters, 1983
- Laser Heterodyne System for Measurement and Analysis of VibrationThe Journal of the Acoustical Society of America, 1970