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, 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.
['Kim|Choong Sun|CS|', 'Hong|Seul Ki|SK|', 'Lee|Jung-Min|JM|', 'Kang|Dong-Soo|DS|', 'Cho|Byung Jin|BJ|', 'Choi|Jung-Woo|JW|']
graphene meshes frequency responses screen printing thermoacoustic effects