An ultrahigh sensitivity acoustic sensor system for weak signal detection based on an ultrahigh- Q CaF2 resonator
文献类型：期刊论文
| 作者 | T. Xing, E. B. Xing, T. Jia, J. L. Li, J. M. Rong, L. Li, S. C. Tian, Y. R. Zhou, W. Y. Liu, J. Tang and J. Liu |
| 刊名 | Microsystems & Nanoengineering
 |
| 出版日期 | 2023 |
| 卷号 | 9期号:1页码:11 |
| ISSN号 | 2055-7434 |
| DOI | 10.1038/s41378-023-00540-0 |
| 英文摘要 | Acoustic sensors with ultrahigh sensitivity, broadband response, and high resolution are essential for high-precision nondestructive weak signal detection technology. In this paper, based on the size effect of an ultrahigh-quality (Q) calcium fluoride (CaF2) resonator, a weak acoustic signal is detected by the dispersive response regime in which an acoustic, elastic wave modulates the geometry and is converted to a resonance frequency shift. Through the structural design of the resonator, the sensitivity reaches 11.54 V/Pa at 10 kHz in the experiment. To our knowledge, the result is higher than that of other optical resonator acoustic sensors. We further detected a weak signal as low as 9.4 mu Pa/Hz(1/2), which greatly improved the detection resolution. With a good directionality of 36.4 dB and a broadband frequency response range of 20 Hz-20 kHz, the CaF2 resonator acoustic sensing system can not only acquire and reconstruct speech signals over a long distance but also accurately identify and separate multiple voices in noisy environments. This system shows high performance in weak sound detection, sound source localization, sleep monitoring, and many other voice interaction applications. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/68051]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | T. Xing, E. B. Xing, T. Jia, J. L. Li, J. M. Rong, L. Li, S. C. Tian, Y. R. Zhou, W. Y. Liu, J. Tang and J. Liu. An ultrahigh sensitivity acoustic sensor system for weak signal detection based on an ultrahigh- Q CaF2 resonator[J]. Microsystems & Nanoengineering,2023,9(1):11. |
| APA | T. Xing, E. B. Xing, T. Jia, J. L. Li, J. M. Rong, L. Li, S. C. Tian, Y. R. Zhou, W. Y. Liu, J. Tang and J. Liu.(2023).An ultrahigh sensitivity acoustic sensor system for weak signal detection based on an ultrahigh- Q CaF2 resonator.Microsystems & Nanoengineering,9(1),11. |
| MLA | T. Xing, E. B. Xing, T. Jia, J. L. Li, J. M. Rong, L. Li, S. C. Tian, Y. R. Zhou, W. Y. Liu, J. Tang and J. Liu."An ultrahigh sensitivity acoustic sensor system for weak signal detection based on an ultrahigh- Q CaF2 resonator".Microsystems & Nanoengineering 9.1(2023):11. |
入库方式： OAI收割
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。