Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23581
Title: Thermal tuning of phononic bandstructure in ferroelectric ceramic/epoxy phononic crystal
Authors: Jim, KL
Leung, CW 
Lau, ST
Choy, SH
Chan, HLW 
Issue Date: 2009
Source: Applied physics letters, 2009, v. 94, no. 19, 193501, p. 193501-1-193501-3
Abstract: Thermal tuning of phononic bandgaps in megahertz range was demonstrated in ferroelectric ceramic-based phononic crystal structure. Temperature variation across ferroelectric phase transition, accompanied by substantial changes in acoustic velocities, leads to a shift in the phononic bandstructure of a two-dimensional (Ba,Sr) TiO3 /epoxy composite sample over a range of 10 °C. Experimental results are supported by modelings based on plane-wave expansion calculations. The high tunability of phononic bandstructure is advantageous for active control of ultrasound transmissions.
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.3136752
Rights: © 2009 American Institute of Physics.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in K. L. Jim et al., Appl. Phys. Lett. 94, 193501 (2009) and may be found at https://dx.doi.org/10.1063/1.3136752
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