Feasibility of a high-powered carbon nanotube thin-film loudspeaker | Zendy

Andrew Barnard | Zendy; D.M. Jenkins | Zendy; Timothy A. Brungart | Zendy; Timothy M. McDevitt | Zendy; Brian L. Kline | Zendy

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Feasibility of a high-powered carbon nanotube thin-film loudspeaker

Author(s) -

Andrew Barnard,

D.M. Jenkins,

Timothy A. Brungart,

Timothy M. McDevitt,

Brian L. Kline

Publication year - 2013

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4817261

Subject(s) - loudspeaker , carbon nanotube , materials science , independence (probability theory) , thin film , acoustics , computer science , engineering physics , nanotechnology , physics , statistics , mathematics

The thermophone, conceived in 1917 by Arnold and Crandall, was a unique thermoacoustic loudspeaker. The high heat capacity per unit area (HCPUA) of thin-film materials at that time limited the usefulness of thermophones. Recently, researchers of carbon nanotubes (CNTs) have developed techniques to create a super-aligned thin-film of multi-walled CNTs, possessing extremely low HCPUA. This paper will discuss CNT thin-film loudspeaker theory as well as some initial investigations into the feasibility of a high-powered audio CNT speaker. The advantages of such a loudspeaker include: Ultra-lightweight, compact, no moving parts, low cost, and independence from expensive rare-earth materials.

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