Flexible, Transparent Piezoelectric Loudspeakers

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Researchers at Purdue University have developed new flexible and transparent loudspeakers by combining vertically aligned lead zirconate titanate (PZT) and graphene nanoplatelets in a polymer matrix. Current technologies utilize magnets and cone-shaped diaphragms to project sound, which is often expensive and unreliable. The method created by Purdue researchers includes a simple, lightweight, and cost-effective assembly. In testing, the new loudspeaker has improved sound frequency up to 2000 Hz, sound pressure level up to 80 dB, and light transmission up to 2200 nm. The loudspeaker system can be easily integrated into automotive, aeronautic, military/defense, television, e-reading applications and as sensors for measuring vibrations.

-Sound quality

Potential Application:
Nov 28, 2019
United States
Feb 21, 2023

Feb 18, 2023
United States

Nov 28, 2018
United States
Purdue Office of Technology Commercialization
The Convergence Center
101 Foundry Drive, Suite 2500
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org