• 文献标题:   Synthesis and characterization of graphene based thermoacoustic devices
  • 文献类型:   Article
  • 作  者:   SBROCKEY NM, SALAGAJ T, TOMPA GS, KALKUR TS
  • 作者关键词:   chemical vapor deposition processe, fullerene, metal, nanomaterial
  • 出版物名称:   JOURNAL OF CRYSTAL GROWTH
  • ISSN:   0022-0248 EI 1873-5002
  • 通讯作者地址:   Struct Mat Ind Inc
  • 被引频次:   1
  • DOI:   10.1016/j.jcrysgro.2018.04.019
  • 出版年:   2018

▎ 摘  要

Thermoacoustic devices were fabricated on flexible plastic substrates with few layer graphene films. The graphene films were grown by chemical vapor deposition on nickel and copper foil substrates, then transferred to the plastic substrates. A simple and reliable technique for electrical contact formation to the graphene was developed, using material from the nickel or copper growth substrate. The thermal and thermoacoustic behavior of the graphene thermophones was characterized as a function of the input electrical signal voltage and frequency, at frequencies up to 10 kHz. The average surface temperature of the device was measured under the same conditions using an infrared pyrometer. Accurate sound reproduction was demonstrated with graphene based thermoacoustic devices, including voice and music. The efficiency of the device is limited by the thermal quenching effect of the substrate. (C) 2018 Elsevier B.V. All rights reserved.