Free-Standing Graphene Thermophone on a Polymer-Mesh Substrate

Choong Sun Kim; Seul Ki Hong; Jung-Min Lee; Dong-Soo Kang; Byung Jin Cho; Jung-Woo Choi

doi:10.1002/smll.201501673

Free-Standing Graphene Thermophone on a Polymer-Mesh Substrate

Small. 2016 Jan 13;12(2):185-9. doi: 10.1002/smll.201501673. Epub 2015 Nov 30.

Authors

Choong Sun Kim¹, Seul Ki Hong¹, Jung-Min Lee², Dong-Soo Kang², Byung Jin Cho¹, Jung-Woo Choi¹

Affiliations

¹ Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea.
² Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea.

PMID: 26619270
DOI: 10.1002/smll.201501673

Abstract

A graphene thermoacoustic loudspeaker with a thin polymer mesh is fabricated using screen-printing. An experiment with substrates of various free-standing areas shows that a higher sound pressure level can be achieved as compared to previously reported graphene thermoacoustic loudspeakers. Moreover, a modified equation to predict the sound pressure level of the thermoacoustic loudspeaker with a thin and patterned substrate is proposed and verified by experimental results.

Keywords: frequency responses; graphene; meshes; screen printing; thermoacoustic effects.

Publication types

Research Support, Non-U.S. Gov't