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Experimental realization of lower-frequency complete band gaps in 2D phononic crystals 二维声子晶体低频全带隙的实验实现
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167304
Huanyu Zhao, C. He, Bin Wu, Yuesheng Wang
{"title":"Experimental realization of lower-frequency complete band gaps in 2D phononic crystals","authors":"Huanyu Zhao, C. He, Bin Wu, Yuesheng Wang","doi":"10.1109/SPAWDA.2011.6167304","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167304","url":null,"abstract":"The lattice configurations are used to produce the different effects of band gap. Based on the well-known ultrasonic immersion transmission technique, the experimental investigation of acoustic wave propagation in two-dimensional phononic crystals for square, honeycomb and (4.82) lattices of steel rods in water is reported at the same normalized radius. Using the plane-wave expansion method we calculate the band structures of phononic crystal. The configurations of square, honeycomb and (4.82) lattices have an atom-rods, two atoms-rods and four atoms-rods per unit cell respectively. We found the structure of (4.82) lattice can have the advantage over other lattice structures and open the very lower-frequency complete band gap. Also, a good agreement between experimental results of complete band gaps for three lattices phononic crystals and theoretical predictions is obtained. Thus, the (4.82) phononic crystal may help to design the new controlling materials in lower-frequency ranges as noise barriers.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131788820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A non-resonant vibration linear motor based on displacement amplification structure 一种基于位移放大结构的非谐振振动直线电机
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167225
Jing-jing Xu, Xifu Chen, Yin Wang, Weiqing Huang, Lei Pan
{"title":"A non-resonant vibration linear motor based on displacement amplification structure","authors":"Jing-jing Xu, Xifu Chen, Yin Wang, Weiqing Huang, Lei Pan","doi":"10.1109/SPAWDA.2011.6167225","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167225","url":null,"abstract":"In order to reduce the effect of the mover surface roughness on the piezoelectric linear motor performance, a non-resonant vibration linear motor based on displacement amplification structure has been investigated. The moter structure was designed in which a lever mechanism was used to achieve amplification of the piezoelectric stack vibration amplitude. The stack vibration amplitude was amplified by the lever and then transferred to the two ends of the driving foot whose motion form an elliptical trajectory at the top of the driving foot. A prototype was made according to analysis of the operating principle of the motor. The experimental results show that in the frequency range 1300–2200 Hz the maximum thrust force of the motor is 0.3N, the maximum non-loaded velocity of the motor is 3.2mm/s.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121477179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boundary integrate equation method for semi-permeable vertical planar cracks in 3D piezoelectric media 三维压电介质中半渗透垂直平面裂纹的边界积分方程法
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167260
C. Fan, ZhengHua Guo, M. Zhao, Rongli Zhang, E. Pan
{"title":"Boundary integrate equation method for semi-permeable vertical planar cracks in 3D piezoelectric media","authors":"C. Fan, ZhengHua Guo, M. Zhao, Rongli Zhang, E. Pan","doi":"10.1109/SPAWDA.2011.6167260","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167260","url":null,"abstract":"In this paper, the boundary integral equation method is developed to study a vertical planar crack under the electrically semi-permeable boundary condition. The crack face is parallel to the poling direction and normal to the plane of isotropy in three-dimensional (3D) transversely isotropic piezoelectric media. The result shows that the singularity order is still the ordinary r−1/2 at the crack tip. The mode I stress intensity factor is related only to the displacement discontinuity or the mechanical loading in the normal direction of the crack plane, whilst the other field intensity factors are coupled together by other extended displacement discontinuities. When the crack is extended infinitely in the y-direction, the problem is reduced to a two-dimensional (2D) one, and the corresponding coupling behavior is simplified.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115030428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on design and experimental of a piezoelectric linear motor using columnar actuator 柱状压电直线电机的设计与实验研究
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167261
Wei-hua Liu, Yin Wang, Pei-hong Chen, Weiqing Huang
{"title":"Study on design and experimental of a piezoelectric linear motor using columnar actuator","authors":"Wei-hua Liu, Yin Wang, Pei-hong Chen, Weiqing Huang","doi":"10.1109/SPAWDA.2011.6167261","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167261","url":null,"abstract":"With the rapid development of modern precision manufacturing industry, actuators with high resolution and long stroke are needed in many application fields. Because of the unique advantages such as self-locking on the power off, compact structure, fast response etc., piezoelectric actuators have been taking place of the traditional actuators which are based on the principle of electromagnetic induction. In this research, piezoelectric stacks were utilized as driving source to propose a piezoelectric linear motor. Design requirements of this motor were presented first and the structure of the motor was proposed. By modeling its stator, the operating principle of the motor was analyzed. In order to validate the feasibility of the principle, a prototype was made. The experimental results of the prototype show that the driving foot of the prototype vibrated with elliptical trajectory while two piezoelectric stacks are applied with two sinuous voltage signals with the same frequency. When proper preload is applied between the stator and rotor, the maximum no-load velocity of the motor is 7.3mm/s, and the maximum thrust force of the motor is 6.38 N.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133339242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Numerical simulations of germanium nanofilm under femtosecond pulse laser heating 飞秒脉冲激光加热下锗纳米膜的数值模拟
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167214
Yonggang Shen, Y. Gan
{"title":"Numerical simulations of germanium nanofilm under femtosecond pulse laser heating","authors":"Yonggang Shen, Y. Gan","doi":"10.1109/SPAWDA.2011.6167214","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167214","url":null,"abstract":"Femtosecond pulse laser heating of a germanium nanofilm is simulated by a method coupling the molecular dynamics and an energy transfer model for ultrafast laser interaction with semiconductors. Simulations demonstrate that the carrier temperature and density drastically evolve at the early heating time, while the lattice temperature gradually rises until the carrier-lattice thermal equilibrium is reached. The surface reflectivity dynamically changes as the carrier density evolves. The femtosecond laser heating can cause a strong thermal stress wave in the film. Initially, a compressive wave is yielded with the peak compression near the irradiated surface. Then, the compression wave transforms into a two-fold wave including compression and tension. At the rear film side, a strong tensile wave occurs with the maximum tension near the back surface. It is also found that shorter laser wavelength brings not only higher carrier temperature and density but also higher lattice temperature and larger thermal stresses.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133374614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A decade of FBAR success and what is needed for another successful decade 十年的FBAR成功，以及下一个成功的十年需要什么
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167265
R. Ruby
{"title":"A decade of FBAR success and what is needed for another successful decade","authors":"R. Ruby","doi":"10.1109/SPAWDA.2011.6167265","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167265","url":null,"abstract":"July 31st, 2001, Avago (then Agilent) shipped its first 25,000 FBAR duplexers (in tape & reel) for nCDMA mobile phones. The value proposition was size (relative to the ceramic duplexers used at that time). At the time, it was supposed that FBAR technology using AlN as the active piezo material would not last beyond a few years. SAW technology, already entrenched in the lower frequencies and with better economies of scale and lower technology barrier to commercialization should have quickly made FBAR a ‘short-lived’ technology. Although still a possibility, FBAR has persevered for over 10 years due to several reasons; high Q, small size, ability to form an all-silicon package (utilizing silicon-fab technology) and reliability. However, the next 10 years pose a challenge to FBAR and serious innovation is necessary so that a similar talk about the success of FBAR covering 20 years can be given. Innovation must cover the ability to go differential, temperature compensation, continued Q enhancement, and chip-scale packages to spread the cost of manufacturing and research. This talk will touch on each of these subjects as well as giving an overview of the unique set of circumstances that made FBAR as successful as it is.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114453733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 32
High piezoelectric properties of batio3 ceramics prepared by two-step sintering technique through conventional solid-state reaction route 采用常规固相反应两步烧结法制备的钛酸钡陶瓷具有高压电性能
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167320
Y. Tan, Jialiang Zhang, Zong Zhang, Chun-lei Wang
{"title":"High piezoelectric properties of batio3 ceramics prepared by two-step sintering technique through conventional solid-state reaction route","authors":"Y. Tan, Jialiang Zhang, Zong Zhang, Chun-lei Wang","doi":"10.1109/SPAWDA.2011.6167320","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167320","url":null,"abstract":"A two-step sintering technique was attempted to acquire BaTO3 ceramics with dense and small-grained microstructure through conventional solid-state reaction route, in which BaCO3 and TiO2 powders are adopted as the starting raw materials. It has been found that the two-step sintering technique is effective even for the synthesized BaTiO3 powder of submicron-sized particles. A BaTiO3 ceramic with relative density as high as 98.2% and small grain size of about 1.7 µm was successfully obtained. Its dielectric and piezoelectric properties were investigated and compared with those of the ordinarily-sintered BaTiO3 ceramic under an optimized sintering condition. The ceramic prepared by the new technique shows high piezoelectric properties of d33 = 390 pC/N and kp = 0.40 and is thus much superior to the ordinarily-sintered one, which displays only d33 = 300 pC/N and kp = 0.32. The results demonstrate that fabricating BaTiO3 ceramics with ideal microstructure and high piezoelectric properties at low cost is possible.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131854091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stochastic micro-vibration response of a spherically symmetric piezoelectric shell structure as sensor 球对称压电壳结构传感器的随机微振动响应
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167176
Z. Ying, Ju Feng
{"title":"Stochastic micro-vibration response of a spherically symmetric piezoelectric shell structure as sensor","authors":"Z. Ying, Ju Feng","doi":"10.1109/SPAWDA.2011.6167176","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167176","url":null,"abstract":"The micro-vibration monitoring and control of vibration-sensitive precision facilities are important and the accurate measurement of micro-vibrations is necessary. The piezoelectric sensors such as piezoelectric shell structure have better electrical-mechanical coupling properties and less effect of bulk and weight. This paper studies the response characteristics of an interceptive spherical piezoelectric shell under stochastic boundary micro-vibration excitations. The equation for electric potential is integrated, and the displacement is transformed and expanded to yield the ordinary differential equations for the shell. The frequency-response function, power spectral density and correlation function matrices of the shell system response are derived. Then the root-mean-square displacement, stress and electric potential of the piezoelectric shell can be calculated. The numerical results are given to illustrate the stochastic electrical-mechanical coupling properties and the relation between boundary electric potential responses and micro-vibration excitations.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123785335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Complete band gaps in sandwich phononic crystal plates 完整的带隙夹层声子晶体板
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167281
Xiao-feng Liu, Yan-Feng Wang, Yue-Sheng Wang
{"title":"Complete band gaps in sandwich phononic crystal plates","authors":"Xiao-feng Liu, Yan-Feng Wang, Yue-Sheng Wang","doi":"10.1109/SPAWDA.2011.6167281","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167281","url":null,"abstract":"By using the finite element method, the propagation of Lamb waves in sandwich phononic crystal plates is investigated. This structure is composed of a two-dimensional phononic crystal plate coated with two homogeneous substrates on both surfaces. The phononic crystal plate is constituted by a square array of elastic cylinder embedded in a solid matrix. It is shown that some complete band gaps are opened by changing the thickness of the phononic crystal plate, and that the width of the first band gap becomes larger as the thickness increased. The influence of the thickness and material properties of the substrates on the width of the complete band gap is discussed as well. It is noted that the thickness of either phononic crystal plate or substrates plays a key role in tuning the band gaps of the sandwich phononic crystal plates.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"09 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124984085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Research progress of piezoelectric immunosensors 压电免疫传感器的研究进展
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167245
Yan Chen, Xian-he Huang, Hua-shan Shi, Yan Wang
{"title":"Research progress of piezoelectric immunosensors","authors":"Yan Chen, Xian-he Huang, Hua-shan Shi, Yan Wang","doi":"10.1109/SPAWDA.2011.6167245","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167245","url":null,"abstract":"Piezoelectric immunosensor is a particular type of biosensor that utilizes the high mass sensibility of piezoelectric quartz crystal in conjunction with the high specificity of antigen-antibody immune reaction. It forms a kind of automated analysis and detection sensors and can make real-time detection for the antigen-antibody reactions on the surface of crystal blank. It is promoting immune diagnosis method to develop toward quantification. The piezoelectric immunosensor, which is especially suitable for the clinic laboratory diagnosis, is becoming one of the novel and attractive hot researches in the field of biomedical. In this paper, the fundamental principle and basic structure of piezoelectric immunosensor were briefly introduced, and the characteristics of existing piezoelectric immunosensor were discussed. The key technology of piezoelectric immune system was presented in detail. In addition, the existing problems in its application were summarized and the prediction on its future development direction was also made.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129938187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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