Free-Standing Graphene Thermophone on a Polymer-Mesh Substrate

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,...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2016-01, Vol.12 (2), p.185-189
Main Authors: Kim, Choong Sun, Hong, Seul Ki, Lee, Jung-Min, Kang, Dong-Soo, Cho, Byung Jin, Choi, Jung-Woo
Format: Article
Language:English
Subjects:
frequency responses
graphene
meshes
Nanotechnology
screen printing
thermoacoustic effects
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Summary: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.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201501673