Issue 7, 2012
From the journal:

Nanoscale

Single-layer graphene sound-emitting devices: experiments and modeling†

He Tian,ab   Dan Xie,ab   Yi Yang,ab   Tian-Ling Ren,*ab   Yu-Feng Wang,ab   Chang-Jian Zhou,ab   Ping-Gang Peng,ab   Li-Gang Wangab  and  Li-Tian Liuab  

* Corresponding authors

a Institute of Microelectronics, Tsinghua University, Beijing, China
E-mail: RenTL@tsinghua.edu.cn

b Tsinghua National Laboratory for Information Science and Technology (TNLIST), Tsinghua University, Beijing, China

Abstract

Single-layer graphene (SLG) was demonstrated to emit sound. The sound emission from SLG had a significant flat frequency response in the wide ultrasound range from 20 kHz to 50 kHz. SLG can produce a sound pressure level (SPL) as high as 95 dB at a distance of 5 cm with a sound frequency of 20 kHz. The SPL value is among the highest reported to date for sound-emitting devices (SEDs) based on the thermoacoustic effect. A theoretical model was established to analyze the sound emission from SLG. The theoretical results are in good agreement with the experimental results. Conventional acoustic devices with a large size can be reduced to the nano-scale by using this novel SLG-SED material. It has the potential to be widely used in speakers, buzzers, earphones, ultrasonic transducer, etc.

Graphical abstract: Single-layer graphene sound-emitting devices: experiments and modeling

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Supplementary files

Article information

DOI
https://doi.org/10.1039/C2NR11572G
Article type
Communication
Submitted
24 Oct 2011
Accepted
26 Nov 2011
First published
03 Jan 2012

Nanoscale, 2012,4, 2272-2277

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Single-layer graphene sound-emitting devices: experiments and modeling

H. Tian, D. Xie, Y. Yang, T. Ren, Y. Wang, C. Zhou, P. Peng, L. Wang and L. Liu, Nanoscale, 2012, 4, 2272 DOI: 10.1039/C2NR11572G

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