A Flexible 360-Degree Thermal Sound Source Based on Laser Induced Graphene
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Institute of Microelectronics, Tsinghua University, Beijing 10084, China
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Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China
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Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA
*
Authors to whom correspondence should be addressed.
Academic Editors: Ming-Tsang Lee, Te-Hua Fang and Chien-Hung Liu
Nanomaterials 2016, 6(6), 112; https://doi.org/10.3390/nano6060112
Received: 26 April 2016
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Revised: 16 May 2016
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Accepted: 30 May 2016
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Published: 7 June 2016
(This article belongs to the Special Issue Nanomaterials for Flexible and Stretchable Devices: Synthesis, Processes, and Applications)
A flexible sound source is essential in a whole flexible system. It’s hard to integrate a conventional sound source based on a piezoelectric part into a whole flexible system. Moreover, the sound pressure from the back side of a sound source is usually weaker than that from the front side. With the help of direct laser writing (DLW) technology, the fabrication of a flexible 360-degree thermal sound source becomes possible. A 650-nm low-power laser was used to reduce the graphene oxide (GO). The stripped laser induced graphene thermal sound source was then attached to the surface of a cylindrical bottle so that it could emit sound in a 360-degree direction. The sound pressure level and directivity of the sound source were tested, and the results were in good agreement with the theoretical results. Because of its 360-degree sound field, high flexibility, high efficiency, low cost, and good reliability, the 360-degree thermal acoustic sound source will be widely applied in consumer electronics, multi-media systems, and ultrasonic detection and imaging.
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MDPI and ACS Style
Tao, L.-Q.; Liu, Y.; Ju, Z.-Y.; Tian, H.; Xie, Q.-Y.; Yang, Y.; Ren, T.-L. A Flexible 360-Degree Thermal Sound Source Based on Laser Induced Graphene. Nanomaterials 2016, 6, 112. https://doi.org/10.3390/nano6060112
AMA Style
Tao L-Q, Liu Y, Ju Z-Y, Tian H, Xie Q-Y, Yang Y, Ren T-L. A Flexible 360-Degree Thermal Sound Source Based on Laser Induced Graphene. Nanomaterials. 2016; 6(6):112. https://doi.org/10.3390/nano6060112
Chicago/Turabian StyleTao, Lu-Qi, Ying Liu, Zhen-Yi Ju, He Tian, Qian-Yi Xie, Yi Yang, and Tian-Ling Ren. 2016. "A Flexible 360-Degree Thermal Sound Source Based on Laser Induced Graphene" Nanomaterials 6, no. 6: 112. https://doi.org/10.3390/nano6060112
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