Issue 39, 2013
From the journal:

RSC Advances

A reduced graphene oxide sound-emitting device: a new use for Joule heating†

He Tian,ab   Yi Yang,ab   Dan Xie,ab   Jie Geab  and  Tian-Ling Ren*ab  

* Corresponding authors

a Institute of Microelectronics, Tsinghua University, Beijing 100084, China

b Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 10008, China
E-mail: RenTL@tsinghua.edu.cn

Abstract

In our living environment, there are a lot of Joule heating sources around such as machines, chips, sunlight, etc. Joule heating has always been considered a useless power except in domestic appliances. Here, we report that Joule heating could be reused by reduced graphene oxide (rGO) to emit sound. Large-area free-standing rGO is demonstrated to emit sound under different radii of curvature. Tunable sound spectrum mappings are obtained by changing the radius of curvature. It was observed that decreasing the curvature radius could provide a better sound directivity. Theoretical simulations suggest that the mechanism is related to the thermoacoustic effect. Due to the excellent characteristics of flexibility and large area, this rGO sound-emitting device will open wide applications in environmental, biomedical and many other fields.

Graphical abstract: A reduced graphene oxide sound-emitting device: a new use for Joule heating

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C3RA42983K
Article type
Communication
Submitted
14 Jun 2013
Accepted
23 Jul 2013
First published
24 Jul 2013

RSC Adv., 2013,3, 17672-17676

Permissions

Request permissions

A reduced graphene oxide sound-emitting device: a new use for Joule heating

H. Tian, Y. Yang, D. Xie, J. Ge and T. Ren, RSC Adv., 2013, 3, 17672 DOI: 10.1039/C3RA42983K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements