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http://dx.doi.org/10.5369/JSST.2019.28.6.360

Acoustic Performance Enhancement in PVDF Speakers by Using Buckled Nanospring Carbon Nanotubes  

Ham, Sora (Center for Opto-Electronis Materials and Devices, Post-Silicon Semiconductor Institue, Korea Institue of Science and Technology)
Lee, Yun Jae (Center for Opto-Electronis Materials and Devices, Post-Silicon Semiconductor Institue, Korea Institue of Science and Technology)
Kim, Jung-Hyuk (Center for Opto-Electronis Materials and Devices, Post-Silicon Semiconductor Institue, Korea Institue of Science and Technology)
Kim, Sung-Ryong (Department of Polymer Science and Engineering, Korea National University of Transportation)
Choi, Won Kook (Center for Opto-Electronis Materials and Devices, Post-Silicon Semiconductor Institue, Korea Institue of Science and Technology)
Publication Information
Journal of Sensor Science and Technology / v.28, no.6, 2019 , pp. 360-365 More about this Journal
Abstract
A polyvinylidene fluoride (PVDF)-based film speaker is successfully fabricated with enhanced bass sound by incorporating buckled nanospring carbon nanotubes (NS-CNTs) as fillers. Various concentrations up to 1-7 wt% of uniformly dispersed buckled NS-CNTs are loaded to increase the beta (β)-phase fraction, crystallinity, and dielectric constant of the speaker, and this results in the bass part enhancement of about 19 dB full scale (dBFS) at 7 wt% filler loading of the piezoelectric film speaker.
Keywords
NS-CNTs; PVDF; acoustic performance; dielectric constant; dB full scale sensors;
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