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A Flexible 360-Degree Thermal Sound Source Based on Laser Induced Graphene
Lu-Qi Tao1,2, Ying Liu3,4, Zhen-Yi Ju5,6
1Institute of Microelectronics, Tsinghua University, Beijing 10084, China. taoluqi@126.com.
Nanomaterials (Basel, Switzerland)
|March 25, 2017
Summary
Researchers developed a flexible 360-degree thermal acoustic sound source using direct laser writing of graphene oxide. This innovation overcomes limitations of conventional piezoelectric devices, enabling omnidirectional sound emission for diverse applications.
Area of Science:
- Materials Science
- Acoustics Engineering
- Nanotechnology
Background:
- Conventional sound sources face integration challenges in flexible systems.
- Piezoelectric-based sound sources exhibit directional sound pressure limitations.
- Developing flexible, omnidirectional sound sources is crucial for advanced electronic systems.
Purpose of the Study:
- To fabricate a flexible, 360-degree thermal acoustic sound source.
- To investigate the sound pressure level and directivity of the novel sound source.
- To explore the potential applications of this flexible sound source technology.
Main Methods:
- Utilized direct laser writing (DLW) technology for fabrication.
- Employed a 650-nm low-power laser to reduce graphene oxide (GO).
- Integrated the laser-induced graphene thermal sound source onto a cylindrical surface for 360-degree emission.
Main Results:
- Successfully fabricated a flexible, 360-degree thermal acoustic sound source.
- Experimental results for sound pressure level and directivity aligned with theoretical predictions.
- Demonstrated the potential for omnidirectional sound emission.
Conclusions:
- The developed 360-degree thermal acoustic sound source offers high flexibility, efficiency, and cost-effectiveness.
- This technology is suitable for widespread application in consumer electronics, multimedia systems, and ultrasonic detection.
- The novel sound source overcomes limitations of traditional piezoelectric devices.
