Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase Sensing
In the present study, pseudo lateral-field-excitation (LFE) bulk acoustic wave characteristics on LGT crystals are investigated to increase the sensitivity of LFE devices on the liquid characteristic variations. The cut orientation of LGT crystals for pseudo-LFE is investigated and verified experime...
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MDPI AG
2019-03-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/19/5/1076 |
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| author | Jiachao Xu Tingfeng Ma Liang Yan Mingfei Wang Ji Wang Jianke Du Chao Zhang |
| author_facet | Jiachao Xu Tingfeng Ma Liang Yan Mingfei Wang Ji Wang Jianke Du Chao Zhang |
| author_sort | Jiachao Xu |
| collection | DOAJ |
| description | In the present study, pseudo lateral-field-excitation (LFE) bulk acoustic wave characteristics on LGT crystals are investigated to increase the sensitivity of LFE devices on the liquid characteristic variations. The cut orientation of LGT crystals for pseudo-LFE is investigated and verified experimentally. For an LFE device in the pseudo-LFE mode, the thickness shear mode wave is excited by the thickness field rather than the lateral field. The present work shows that when the (yxl) 13.8° LGT plate is excited by the electric field parallel to the crystallographic axis x, it operates in the pseudo-LFE mode. Moreover, characteristics of devices including the sensitivity and impedance are investigated. The present work shows that sensitivity of LFE devices to variation of the conductivity and permittivity of the aqueous solution are 9 and 3.2 times higher than those for AT-cut quartz crystal based devices, respectively. Furthermore, it has been found that the sensitivity of the LGT LFE sensor to liquid acoustic viscosity variations is 1.4 times higher than the one for the AT-cut quartz sensor. The results are a critical basis of designing high-performance liquid phase sensors by using pseudo-LFE devices. |
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| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:26:27Z |
| publishDate | 2019-03-01 |
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| spelling | doaj.art-483021995f0f4d618c8335a78d62b4ac2022-12-22T03:59:38ZengMDPI AGSensors1424-82202019-03-01195107610.3390/s19051076s19051076Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase SensingJiachao Xu0Tingfeng Ma1Liang Yan2Mingfei Wang3Ji Wang4Jianke Du5Chao Zhang6School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, ChinaSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, ChinaSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, ChinaSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, ChinaSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, ChinaSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, ChinaResearch Institute of Tsinghua University in Shenzhen, Shenzhen 518057, ChinaIn the present study, pseudo lateral-field-excitation (LFE) bulk acoustic wave characteristics on LGT crystals are investigated to increase the sensitivity of LFE devices on the liquid characteristic variations. The cut orientation of LGT crystals for pseudo-LFE is investigated and verified experimentally. For an LFE device in the pseudo-LFE mode, the thickness shear mode wave is excited by the thickness field rather than the lateral field. The present work shows that when the (yxl) 13.8° LGT plate is excited by the electric field parallel to the crystallographic axis x, it operates in the pseudo-LFE mode. Moreover, characteristics of devices including the sensitivity and impedance are investigated. The present work shows that sensitivity of LFE devices to variation of the conductivity and permittivity of the aqueous solution are 9 and 3.2 times higher than those for AT-cut quartz crystal based devices, respectively. Furthermore, it has been found that the sensitivity of the LGT LFE sensor to liquid acoustic viscosity variations is 1.4 times higher than the one for the AT-cut quartz sensor. The results are a critical basis of designing high-performance liquid phase sensors by using pseudo-LFE devices.http://www.mdpi.com/1424-8220/19/5/1076bulk acoustic waveLGT crystallateral-field-excitationimpedance characteristicsliquid phase sensing |
| spellingShingle | Jiachao Xu Tingfeng Ma Liang Yan Mingfei Wang Ji Wang Jianke Du Chao Zhang Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase Sensing Sensors bulk acoustic wave LGT crystal lateral-field-excitation impedance characteristics liquid phase sensing |
| title | Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase Sensing |
| title_full | Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase Sensing |
| title_fullStr | Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase Sensing |
| title_full_unstemmed | Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase Sensing |
| title_short | Bulk Acoustic Wave Characteristics of Pseudo Lateral-Field-Excitation on LGT Single Crystal for Liquid Phase Sensing |
| title_sort | bulk acoustic wave characteristics of pseudo lateral field excitation on lgt single crystal for liquid phase sensing |
| topic | bulk acoustic wave LGT crystal lateral-field-excitation impedance characteristics liquid phase sensing |
| url | http://www.mdpi.com/1424-8220/19/5/1076 |
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