21 October 2009 Piezoelectric paper speaker using a regenerated cellulose film
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Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 749306 (2009); doi: 10.1117/12.840169
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China
Abstract
Acoustic performance of regenerated cellulose electroactive paper (EAPap) as a thin flexible film speaker was investigated. The enhancement of piezoelectric properties was obtained by a simple mechanical stretching process. As a prototype of flexible paper speaker, the sound pressure level (SPL) of cellulose EAPap film was evaluated as a function of distance, speaker size and geometry. It was revealed that the higher acoustic output from a small rectangular shape in low frequency range, while circular one seems to be better than that of all rectangular type speakers in audible frequencies.
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Joo-Hyung Kim, Gyu-Young Yun, Jung-Hwan Kim, Jaehwan Kim, "Piezoelectric paper speaker using a regenerated cellulose film", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 749306 (21 October 2009); doi: 10.1117/12.840169; https://doi.org/10.1117/12.840169
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KEYWORDS
Acoustics

Scanning probe lithography

Electrodes

Thin films

Distance measurement

Image processing

Polymers

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