Stepped electrode designs of TSM langasite resonators for high-temperature applications

Ismaeel Shah; Tridib Saha

doi:10.1016/j.ultras.2023.106925

Stepped electrode designs of TSM langasite resonators for high-temperature applications

Ismaeel Shah, Tridib Saha

Malaysia Sch of Engineering

Research output: Contribution to journal › Article › Research › peer-review

Abstract

In this paper, we report the simulation and fabrication of thickness-shear mode langasite resonators with stepped elliptical electrode designs to investigate their effects on energy trapping and suppression of spurious modes at elevated temperatures. Finite element analysis was conducted to analyze the design of a stepped elliptical electrode on a contoured langasite crystal. Based on the simulation findings, langasite resonators with stepped electrodes were fabricated, and their displacement profiles and frequency–temperature properties were characterized using network analysis and laser Doppler vibrometry. Results demonstrate improved frequency separation between the resonant and spurious modes, and enhanced spurious mode suppression at both room and higher temperatures, suggesting that stepped elliptical electrode designs can effectively enhance the sensing performance of langasite resonators.

Original language	English
Article number	106925
Number of pages	8
Journal	Ultrasonics
Volume	130
DOIs	https://doi.org/10.1016/j.ultras.2023.106925
Publication status	Published - Apr 2023

Keywords

Electrode design
High temperature device
Langasite
Laser doppler vibrometry
Thickness-shear

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10.1016/j.ultras.2023.106925

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title = "Stepped electrode designs of TSM langasite resonators for high-temperature applications",

abstract = "In this paper, we report the simulation and fabrication of thickness-shear mode langasite resonators with stepped elliptical electrode designs to investigate their effects on energy trapping and suppression of spurious modes at elevated temperatures. Finite element analysis was conducted to analyze the design of a stepped elliptical electrode on a contoured langasite crystal. Based on the simulation findings, langasite resonators with stepped electrodes were fabricated, and their displacement profiles and frequency–temperature properties were characterized using network analysis and laser Doppler vibrometry. Results demonstrate improved frequency separation between the resonant and spurious modes, and enhanced spurious mode suppression at both room and higher temperatures, suggesting that stepped elliptical electrode designs can effectively enhance the sensing performance of langasite resonators.",

keywords = "Electrode design, High temperature device, Langasite, Laser doppler vibrometry, Thickness-shear",

author = "Ismaeel Shah and Tridib Saha",

note = "Funding Information: This research was funded by the Ministry of Higher Education, Malaysia Fundamental Research Grant Scheme FRGS/1/2019/STG02/MUSM/03/1, and was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Additionally, we would like to thank Mr. Yusuke Hayakawa from Piezo Parts Co. Ltd. Japan, for his advice and support with the fabrication of langasite resonators. We also acknowledge the use of the instruments and scientific and technical assistance of Dr. Zhou Xu at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. Funding Information: This research was funded by the Ministry of Higher Education, Malaysia Fundamental Research Grant Scheme FRGS/1/2019/STG02/MUSM/03/1 , and was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Additionally, we would like to thank Mr. Yusuke Hayakawa from Piezo Parts Co. Ltd., Japan, for his advice and support with the fabrication of langasite resonators. We also acknowledge the use of the instruments and scientific and technical assistance of Dr. Zhou Xu at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = apr,

doi = "10.1016/j.ultras.2023.106925",

language = "English",

volume = "130",

journal = "Ultrasonics",

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AU - Saha, Tridib

N1 - Funding Information: This research was funded by the Ministry of Higher Education, Malaysia Fundamental Research Grant Scheme FRGS/1/2019/STG02/MUSM/03/1, and was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Additionally, we would like to thank Mr. Yusuke Hayakawa from Piezo Parts Co. Ltd. Japan, for his advice and support with the fabrication of langasite resonators. We also acknowledge the use of the instruments and scientific and technical assistance of Dr. Zhou Xu at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. Funding Information: This research was funded by the Ministry of Higher Education, Malaysia Fundamental Research Grant Scheme FRGS/1/2019/STG02/MUSM/03/1 , and was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Additionally, we would like to thank Mr. Yusuke Hayakawa from Piezo Parts Co. Ltd., Japan, for his advice and support with the fabrication of langasite resonators. We also acknowledge the use of the instruments and scientific and technical assistance of Dr. Zhou Xu at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/4

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N2 - In this paper, we report the simulation and fabrication of thickness-shear mode langasite resonators with stepped elliptical electrode designs to investigate their effects on energy trapping and suppression of spurious modes at elevated temperatures. Finite element analysis was conducted to analyze the design of a stepped elliptical electrode on a contoured langasite crystal. Based on the simulation findings, langasite resonators with stepped electrodes were fabricated, and their displacement profiles and frequency–temperature properties were characterized using network analysis and laser Doppler vibrometry. Results demonstrate improved frequency separation between the resonant and spurious modes, and enhanced spurious mode suppression at both room and higher temperatures, suggesting that stepped elliptical electrode designs can effectively enhance the sensing performance of langasite resonators.

AB - In this paper, we report the simulation and fabrication of thickness-shear mode langasite resonators with stepped elliptical electrode designs to investigate their effects on energy trapping and suppression of spurious modes at elevated temperatures. Finite element analysis was conducted to analyze the design of a stepped elliptical electrode on a contoured langasite crystal. Based on the simulation findings, langasite resonators with stepped electrodes were fabricated, and their displacement profiles and frequency–temperature properties were characterized using network analysis and laser Doppler vibrometry. Results demonstrate improved frequency separation between the resonant and spurious modes, and enhanced spurious mode suppression at both room and higher temperatures, suggesting that stepped elliptical electrode designs can effectively enhance the sensing performance of langasite resonators.

KW - Electrode design

KW - High temperature device

KW - Langasite

KW - Laser doppler vibrometry

KW - Thickness-shear

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SN - 0041-624X

VL - 130

JO - Ultrasonics

JF - Ultrasonics

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ER -

Stepped electrode designs of TSM langasite resonators for high-temperature applications

Abstract

Keywords

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Centre for Electron Microscopy (MCEM)

Melbourne Centre for Nanofabrication

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Stepped electrode designs of TSM langasite resonators for high-temperature applications

Abstract

Keywords

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Centre for Electron Microscopy (MCEM)

Melbourne Centre for Nanofabrication

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