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- W3201460956 abstract "Due to its excellent heat dissipation capability and high thermal conductivity, three-dimensional porous graphene foam (3DPGF) has attracted immense attention for its potential applications in thermoacoustic devices. However, 3DPGF is usually relatively fragile that poses a challenge to its practical application in thermoacoustic equipment. In this respect, the structural strength can be significantly improved by pasting the material on a substrate. In this paper, the performance of thermoacoustic transducers made of 3DPGF on a substrate is investigated by theory and experiment. Both 3DPGFs on a porous anodic aluminum (AAO) substrate and on a polydimethylsiloxane (PDMS) substrate are taken into consideration. First, a theoretical model for the 3D thermoacoustic source on a substrate is proposed and analytical solutions are obtained. The model and its corresponding solution are verified by comparing with experiment. Subsequently, key influencing factors of 3DPGF and substrate on the acoustic field characteristics are analyzed theoretically. Lastly, an experimental bending test is performed to explore the acoustic performance and flexibility of 3DPGFs with different substrates. The theoretical and experimental results revealed that 3DPGF on AAO produces a higher SPL than that on PDMS substrate when the thermoacoustic transducer is undeformed while it is easily damaged at an initial first-time bending. To the contrary, 3DPGF on PDMS shows better flexibility than that on AAO substrate and it has a stable acoustic performance even after repeated and recursive bending." @default.
- W3201460956 created "2021-09-27" @default.
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- W3201460956 date "2021-10-18" @default.
- W3201460956 modified "2023-10-16" @default.
- W3201460956 title "Theory and experiment for 3D porous graphene foam thermoacoustic transducer" @default.
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- W3201460956 doi "https://doi.org/10.1088/1361-6463/ac292e" @default.
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