High-performance sound source devices based on graphene woven fabrics

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Abstract
Graphene woven fabrics (GWFs) consisting of a large number of overlapping graphene micro-ribbons were fabricated by chemical vapor deposition. We demonstrated that GWF films can emit sound efficiently once they are actuated by a sound-frequency electric field owing to the thermoacoustic effect. Because of its ultra-low heat capacity per unit area, the GWF shows sound generation performance comparable to single-layer graphene and carbon nanotubes, and would perform better than them when it is suspended on a high porosity substrate. This sound source can be used in a wide variety of applications, taking advantage of its transparency, flexibility, ultrathin nature, absence of moving parts, and biologically compatible characteristics.
Funding Information
  • National Basic Research Program of China (2011CB921400,2013CB921800)
  • National Key Project of Science and Technology (2011ZX02403-002)
  • Special Fund for Agro-scientific Research in the Public Interest (201303107)
  • National Natural Science Foundation of China (11374280,50772110,61434001,61025021,61020106)

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