Experimental investigation on characteristics of graphene acoustic transducers driven by electrostatic and electromagnetic forces
Ultrasonics, ISSN: 0041-624X, Vol: 127, Page: 106857
2023
- 7Citations
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Article Description
Acoustic transducers with graphene film have high sensitivity and wide bandwidth of frequency response as receivers. However, they exist in transmitting mode with low radiation performance. We propose an effective approach to enhance radiation performance of the graphene acoustic transducer by embedding a coil in insulating layer, and investigate the characteristics of graphene acoustic transducers by experiments. A graphene acoustic transducer is designed and fabricated. The highest receiving sensitivity of the transducer is −30 dB. The output sound pressure level of the transducer is more than 3 dB on average in the range of 2 ∼ 16 kHz compared without a coil. And the sound pressure level increases by 6 dB on average in the range of 40 ∼ 45 kHz. These results demonstrate that the graphene transducer maintains high receiving performance, and also improves acoustic radiation performance, which greatly expands its application field.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0041624X22001639; http://dx.doi.org/10.1016/j.ultras.2022.106857; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85138992110&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/36183495; https://linkinghub.elsevier.com/retrieve/pii/S0041624X22001639; https://dx.doi.org/10.1016/j.ultras.2022.106857
Elsevier BV
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