Study of Carbon-Nanotube Web Thermoacoustic Loud Speakers
Study of Carbon-Nanotube Web Thermoacoustic Loud Speakers
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DOI：
10.1143/jjap.50.01bj10
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发表时间：
2011
影响因子：
1.5
通讯作者：
Katsunori Suzuki;S. Sakakibara;M. Okada;Y. Neo;H. Mimura;Y. Inoue;Toshihiro Murata
中科院分区：
文献类型：
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作者：
Katsunori Suzuki;S. Sakakibara;M. Okada;Y. Neo;H. Mimura;Y. Inoue;Toshihiro Murata
热声碳纳米管（CNT）扬声器的制造使用CNT网纺从多壁碳纳米管（MWNT）阵列的0.8-1.6 mm的高度。在10 Hz ~ 40 kHz的宽范围内，声压级与频率呈线性关系，斜率为6 dB/倍频程。除此之外，在40至100 kHz范围内的超声区域中获得了显著宽且平坦的SPL。从扬声器到麦克风的距离为0.5米。高SPL是由于MWNT网的良好的热辐射性能。在这里，我们显示了从结构网络形态的观点的多壁碳纳米管网络热声扬声器的声学性能。的热辐射行为的作用和影响的个别MWNTs的长度进行了讨论。
Thermoacoustic carbon nanotube (CNT) speakers were fabricated using CNT webs spun from a multiwalled carbon nanotube (MWNT) array of 0.8–1.6 mm height. The generated sound pressure level (SPL) showed a linear relationship with frequency over a wide range from 10 Hz to 40 kHz with a slope of 6 dB/octave. In addition to this, significantly broad and flat SPLs were obtained in the ultrasonic region, ranging from 40 to 100 kHz. The distance from the speaker to the microphone was 0.5 m. The high SPL is due to the good heat radiation property of the MWNT web. Herein, we showed an acoustical property for the MWNT web thermoacoustic speaker from the viewpoint of the structural web morphology. The role of heat radiation behavior and the effects of the length of individual MWNTs are discussed.