2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP)最新文献

Origins of Conduction at Domain Boundaries, LaAlO3/SrTiO3 and Surface for Depolarization & Size Effect 畴边界导电的起源，LaAlO3/SrTiO3和表面的退极化和尺寸效应

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-09-11 DOI: 10.1109/ISAF.2018.8463221

Yukio Watanabe, D. Matsumoto, Y. Urakami, M. Okano, A. Masuda

引用次数: 0

Domain Switching by Applied Electric Field in (001) and (111)-epitaxial (K0.5Na0.5)NbO3Films 外加电场在(001)和(111)-外延(K0.5Na0.5) nbo3薄膜中的畴切换

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-07-10 DOI: 10.1109/ISAF.2018.8463311

M. Kawano, T. Yamada, S. Matsuo, M. Yoshino, T. Nagasaki, O. Sakata, Y. Imai

引用次数: 0

Data-Mining Driven Design for Novel Perovskite-type Piezoceramics 新型钙钛矿型压电陶瓷的数据挖掘驱动设计

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463245

Jian Yu, Jun Yu Li, Yinglong Jiang, J. Chu

引用次数: 1

Control of Leakage Current through BaTiO3 Film by Cumulative Cycle of Applied Voltage Scanning for ReRAM or Neuromorphic Application 应用累积周期电压扫描法控制BaTiO3薄膜泄漏电流的研究

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463232

S. Maejima, M. Uchida, M. Noda

引用次数: 0

Piezoelectric Ultrasonic Microsensors on Buckled Diaphragms Using Sol-Gel Derived PZT Films 基于溶胶-凝胶衍生PZT薄膜的屈曲膜片压电超声微传感器

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463278

K. Yamashita, Shōta Nakajima, Jo Shiomi, M. Noda, P. Muralt

{"title":"Piezoelectric Ultrasonic Microsensors on Buckled Diaphragms Using Sol-Gel Derived PZT Films","authors":"K. Yamashita, Shōta Nakajima, Jo Shiomi, M. Noda, P. Muralt","doi":"10.1109/ISAF.2018.8463278","DOIUrl":"https://doi.org/10.1109/ISAF.2018.8463278","url":null,"abstract":"Piezoelectric ultrasonic microsensors with a PZT (lead-zirconate-titanate) capacitor on a buckled diaphragm were fabricated and deposition condition of the sol-gel derived PZT films was investigated from the viewpoint of high mechano-electrical conversion efficiency. The buckling of the diaphragm affects the conversion efficiency in the geometrical aspect and is influenced by the residual stress of the diaphragm. The films were deposited through various thermal treatment in the sol-gel process; four pyrolysis temperatures and two first-crystallized gel film thickness, and were evaluated in their stress and ferroelectric property. The thickness of the gel film affected the crystallographic orientation, (100) or (111), of the film, and dominated the film stress and remanent polarization, e.g., the stress and polarization of the (100)-oriented films were smaller than those of the (lll)-oriented films, meaning the (100) orientation is better in the stress but worse in the remanent polarization than (111) orientation. The pyrolysis temperature was then precisely controlled and finally orientation-distributed samples were fabricated and evaluated. The samples with mixed orientation of (100) and (111) in around 50% showed intermediate stress and remanent polarization, and their sensitivity was enhanced by 1.4-4 times to those with (100) or (111) single oriented films.","PeriodicalId":231071,"journal":{"name":"2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134193787","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

Vibration Mode Analyses for Circular Wedge Acoustic Waveguides 圆楔声波导振动模态分析

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463226

Tai-Ho Yu

{"title":"Vibration Mode Analyses for Circular Wedge Acoustic Waveguides","authors":"Tai-Ho Yu","doi":"10.1109/ISAF.2018.8463226","DOIUrl":"https://doi.org/10.1109/ISAF.2018.8463226","url":null,"abstract":"A bi-dimensional finite element model based on Hamilton's principle and the finite element method is developed in this study to analyze the dispersive characteristics and mode shapes of normal modes for circular wedge acoustic waveguides. The dispersion curves of phase velocities for guided waves and their corresponding resonant frequencies for a circular wedge waveguide were also evaluated by 3D finite element analysis (FEA) using the commercial ANSYS code. The convergence of guided waves was discussed. The 3D FEA was limited in terms of calculating for higher normal modes due to constraints in the available number of elements. The bi-dimensional finite element method is based on the separation of variables, with the wave propagation factor being separated from cross-sectional vibrations of the acoustic waveguides. The present method has advantages in terms of being able to determine phase velocities and mode shapes up to higher normal modes and in a wide range of frequencies without loss of accuracy. The phase velocities of the anti-symmetric flexural (ASF) guided waves in circular wedge waveguides were found to be slower than the Rayleigh wave speed. Furthermore, the calculated results in the range of higher wave numbers were in good agreement with the empirical formula provided by Lagasse [1]. The ASF waves in circular cylindrical wedge-typed waveguides were found to have faster and frequency-dependent phase velocities in the range of lower wave numbers. This phenomenon results from the boundary conditions on the bottom of waveguides, which are different from the ideal wedge problem considered in Lagasse's work. In addition, the curvatures of the acoustic waveguides were found to increase the phase velocities of higher normal modes only.","PeriodicalId":231071,"journal":{"name":"2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114937581","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

Piezoelectric Resonating Force Sensor in the Second Vibration Mode 第二振型压电谐振力传感器

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463273

K. Yamashita, P. Muralt

引用次数: 0

An Ag Decorated P(VDF-CTFE)/BT@HBP@PDA Nanocomposites with Double-Shell Core Structure for High Dielectric Performance 高介电性能Ag修饰P(VDF-CTFE)/BT@HBP@PDA纳米复合材料

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463253

W. Xia, Yalin Yin, Junhong Xing, Ning Zhang, Zhuo Xu

{"title":"An Ag Decorated P(VDF-CTFE)/BT@HBP@PDA Nanocomposites with Double-Shell Core Structure for High Dielectric Performance","authors":"W. Xia, Yalin Yin, Junhong Xing, Ning Zhang, Zhuo Xu","doi":"10.1109/ISAF.2018.8463253","DOIUrl":"https://doi.org/10.1109/ISAF.2018.8463253","url":null,"abstract":"A core-shell inorganic/polymer materials with abundant compositions and multiple shapes have attracted many attentions recently for their harmonious interfacial compatibility, high dielectric performance, and thereby the prospect of applications in energy storage devices. In this work, for improving the interfacial compatibility of in organiclpolymer nanocomposites, the BaTiO3 (BT) nano-powders are coated successively by using double shell polyamide (HBP) and dopamine (PDA) that is decorated with nanoscale Ag particles. In addition, a P(VDF-CTFE) with high breakdown electric field and proper dielectric permittivity are selected as the polymer matrix, and the flexible 0–3 nanocomposite of Ag decorated P(VDF-CTFE)/BT@HBP@PDA films with ~20μm in thickness are obtained through spin-casting method. The morphologies from FESEM show that the interface between BaTiO3 and P(VDF-CTFE) has been improved significantly and BaTiO3 is homogeneous dispersion in the polymer matrix. Consequently, the multicomponent nanocomposites possess the large dielectric permittivity (εr~40) and a low dielectric loss tangent (0.1 Hz) since the ionic polarization of BaTiO3 and the penetration effect of electrons. The result provides an effective way of interfacial improving that through various mutual promoting mediums to achieve high dielectric performance composite materials for their potential applications in energy storage areas.","PeriodicalId":231071,"journal":{"name":"2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126519290","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

Ferromagnetism in barium titanate nanoparticles. Effect of annealing in hydrogen atmosphere on magnetic properties 钛酸钡纳米颗粒的铁磁性。氢气氛退火对磁性能的影响

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463349

N. A. Emelianov, L. Korotkov, W. M. Al Mandalawi, M. Kashirin, J. Roldan López, T. N. Korotkova

引用次数: 3

Performance and reliability of PZT-based piezoelectric micromirrors operated in realistic environments 基于压电陶瓷的微镜在现实环境中的性能和可靠性

2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP) Pub Date : 2018-05-01 DOI: 10.1109/ISAF.2018.8463243

R. Dahl-Hansen, T. Tybell, F. Tyholdt

{"title":"Performance and reliability of PZT-based piezoelectric micromirrors operated in realistic environments","authors":"R. Dahl-Hansen, T. Tybell, F. Tyholdt","doi":"10.1109/ISAF.2018.8463243","DOIUrl":"https://doi.org/10.1109/ISAF.2018.8463243","url":null,"abstract":"The number of application areas for piezoelectric micro electromechanical systems based on PZT have increased rapidly over the years. Thus, to continue the development towards commercial deployment, characterizing lifetime and reliability during operation in realistic and harsh environments is important. Such environments are demanding for piezoMEMS devices since they often involve high humidity levels and elevated temperatures which gives rise to complex degradation. To address how such conditions affects device performance we combined optical and electrical measurements to elucidate the degradation of a PZT-based thin-film piezoelectric MEMS micromirror during temperature-humidity-cycling tests. As a test structure, $1 mu m PbZr_{0.40}Ti_{0.60}O_{3}$ on a 10 nm LaNiO3 buffer-layer, were deposited by pulsed laser deposition on platinized Silicon-on-Insulator wafers. A 250 nm Au/TiW top electrode was deposited by DC-sputtering before structuring the final device. The micro mirrors were unipolarly actuated with a signal of $20 V$ peak-to-peak at a frequency of 1.5 kHz in an ambient with constant vapor concentration of 22 $g/m^{3}$ for device temperatures between 25${}^{o}C$ and 175${}^{o}C$. Humidity-related degradation was manifested as local breakdown events and pinholes on top of and along the edges of the used electrodes. This had a strong effect on device performance and preceded degradation due to polarization-fatigue at all temperatures. Also, both the initial piezoelectric response and number of cycles to device failure increased with increasing substrate temperature in humid ambient.","PeriodicalId":231071,"journal":{"name":"2018 IEEE ISAF-FMA-AMF-AMEC-PFM Joint Conference (IFAAP)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127174814","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: 7