Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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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)
  • Received : 2019.10.28
  • Accepted : 2019.11.29
  • Published : 2019.11.30
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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.

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References

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