Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring
Abstract Acoustic impedance enables many interesting acoustic applications. However, acoustic impedance for gas sensing is rare and difficult. Here we introduce a micro-nano surface acoustic wave (SAW) chip based on the acoustic impedance effect to achieve ultra-fast and wide-range gas sensing. We t...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | Communications Engineering |
| Online Access: | https://doi.org/10.1038/s44172-025-00347-z |
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| author | Baile Cui Wen Wang Lina Cheng Jing Jin Anyu Hu Zixuan Ren Xufeng Xue Yong Liang |
| author_facet | Baile Cui Wen Wang Lina Cheng Jing Jin Anyu Hu Zixuan Ren Xufeng Xue Yong Liang |
| author_sort | Baile Cui |
| collection | DOAJ |
| description | Abstract Acoustic impedance enables many interesting acoustic applications. However, acoustic impedance for gas sensing is rare and difficult. Here we introduce a micro-nano surface acoustic wave (SAW) chip based on the acoustic impedance effect to achieve ultra-fast and wide-range gas sensing. We theoretically established the relationship between surface load acoustic impedance and SAW attenuation, and analyzed the influence of acoustic impedance on acoustic propagation loss under different gas/humidity media. Experimental measurements reveal that the differences in acoustic impedance generated by different gases trigger different acoustic attenuation, and can achieve wide-range (0–100 v/v%) gas monitoring, with ultra-fast response and recovery speeds reaching sub-second levels (t 90 < 1 s, t 10 < 0.5 s) and detection limit of ~1 v/v%. This capability can also be perfectly utilized for human respiratory monitoring, accurately reflecting respiratory status, frequency, and intensity. Consequently, the SAW chip based on the acoustic impedance effect provides a new solution for in-situ detection of gas leaks and precise monitoring of human respiration. |
| format | Article |
| id | doaj-art-7c4625d9c428459e82fb5c5a2b790b7e |
| institution | Kabale University |
| issn | 2731-3395 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Engineering |
| spelling | doaj-art-7c4625d9c428459e82fb5c5a2b790b7e2025-02-02T12:27:05ZengNature PortfolioCommunications Engineering2731-33952025-02-01411810.1038/s44172-025-00347-zAcoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoringBaile Cui0Wen Wang1Lina Cheng2Jing Jin3Anyu Hu4Zixuan Ren5Xufeng Xue6Yong Liang7State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesState Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesState Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesState Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesState Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesState Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesState Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesState Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of SciencesAbstract Acoustic impedance enables many interesting acoustic applications. However, acoustic impedance for gas sensing is rare and difficult. Here we introduce a micro-nano surface acoustic wave (SAW) chip based on the acoustic impedance effect to achieve ultra-fast and wide-range gas sensing. We theoretically established the relationship between surface load acoustic impedance and SAW attenuation, and analyzed the influence of acoustic impedance on acoustic propagation loss under different gas/humidity media. Experimental measurements reveal that the differences in acoustic impedance generated by different gases trigger different acoustic attenuation, and can achieve wide-range (0–100 v/v%) gas monitoring, with ultra-fast response and recovery speeds reaching sub-second levels (t 90 < 1 s, t 10 < 0.5 s) and detection limit of ~1 v/v%. This capability can also be perfectly utilized for human respiratory monitoring, accurately reflecting respiratory status, frequency, and intensity. Consequently, the SAW chip based on the acoustic impedance effect provides a new solution for in-situ detection of gas leaks and precise monitoring of human respiration.https://doi.org/10.1038/s44172-025-00347-z |
| spellingShingle | Baile Cui Wen Wang Lina Cheng Jing Jin Anyu Hu Zixuan Ren Xufeng Xue Yong Liang Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring Communications Engineering |
| title | Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring |
| title_full | Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring |
| title_fullStr | Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring |
| title_full_unstemmed | Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring |
| title_short | Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring |
| title_sort | acoustic impedance based surface acoustic wave chip for gas leak detection and respiratory monitoring |
| url | https://doi.org/10.1038/s44172-025-00347-z |
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