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Piezoelectric electro-active paper (EAPap) speaker

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Abstract

Film type piezoelectric speaker using cellulose electroactive paper (EAPap) in audible range was studied by acoustic characterization. The speaker was fabricated by depositing thin metal electrodes on both sides of EAPap. The local piezoelectric behavior of thin EAPap surface was visualized at 6 kHz and 221 Hz. The performance of EAPap film speaker as a function of size was evaluated in the audible frequency range, resulting in enhancement of speaker performance in low frequency range. From the measurement of geometric effect of EAPap speaker on audible performance, the circular type speaker shows better performance than rectangular one. Therefore we suggest that the piezoelectric EAPap has a potential for acoustic applications.

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Authors and Affiliations

  1. Creative Research Center for EAPap Actuator, Department of Mechanical Engineering, Inha University, Incheon, 402-751, Korea

    Jaehwan Kim, Gyu-Young Yun & Jung-Hwan Kim

  2. Department of Electronic Engineering, Chosun University, Gwangju, 501-759, Korea

    Joo-Hyung Kim

  3. Department of Control, Instrumentation and Robot Engineering, Chosun University, Gwangju, 501-759, Korea

    Jinyi Lee

Authors
  1. Jaehwan Kim
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  2. Gyu-Young Yun
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  3. Jung-Hwan Kim
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  4. Jinyi Lee
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  5. Joo-Hyung Kim
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Corresponding author

Correspondence to Joo-Hyung Kim.

Additional information

This paper was recommended for publication in revised form by Associate Editor Heung Soo Kim

Jaehwan Kim is a professor of Mechanical Engineering at Inha University, Korea. Also he is a director of Creative Research Center of Electro-Active (EAPap) actuator. He is interested in smart materials, sensors and actuators, including biomimetic sensor, wireless power transmission.

Gyu-Young Yun is a Ph.D Candidate in Mechanical Engineering at Inha University, Korea, since 2008. His main research interest is advanced characterization of smart sensors and actuators.

Jinyi Lee is an associate professor of Control, Instrumentation and Robot Engineering at Chosun University, Korea. His main research interests are magnetic sensor development and realtime NDT technique for vehicle and military applications.

Joo-Hyung Kim is an assistant professor of Electronic Engineering at Chosun University, Korea. He is a member of IEEK in Korea. His main research interests are fabrication of micro-nano devices and characterization of novel smart materials including functional oxide and polymer based

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Kim, J., Yun, GY., Kim, JH. et al. Piezoelectric electro-active paper (EAPap) speaker. J Mech Sci Technol 25, 2763–2768 (2011). https://doi.org/10.1007/s12206-011-0718-z

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  • DOI: https://doi.org/10.1007/s12206-011-0718-z

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