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
Publisher: American Institute of Physics
Source: Applied physics letters, 2009, v. 94, no. 19, 193501 How to cite?
Journal: Applied physics letters 
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.
URI: http://hdl.handle.net/10397/23581
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.3136752
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