Dr. Paolo La Torraca, University of Modena and Reggio Emilia is going to attend 2nd International Conference on Nanomaterials and Nanotechnology scheduled on May 16-17, 2019 at Prague, Czech Republic.
More details: https://bit.ly/2LNiYuz
Title: Nanostructured materials for high efficiency thermoacoustic loudspeakers
The thermoacoustic (TA) loudspeaker technology is known since the beginning of the XXth century but the efficiency of the fabricated devices was strongly limited by the lack of suitable materials. It is now well understood that an efficient TA loudspeaker requires an active film with low heat capacity per unit area and a substrate with low thermal effusivity. The recent development of nanostructured materials, exhibiting unprecedented electrical, thermal, and mechanical properties, enabled the design and fabrication high efficiency TA loudspeakers. Solution processed metallic nanowires have been used for spray-coating deposition of nanostructured active films characterized by a low electrical resistance and an extremely low heat capacity per unit area. Silica aerogel has been selected for its low thermal effusivity, provided by the material nanoporous structure, and successfully used as substrate for TA loudspeakers. The experimental results show the significant enhancement achieved by using the presented nanostructured materials.
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