著者

藤本 滋 今井 健嗣 一木 正聡

出版者

公益社団法人 日本設計工学会

雑誌

設計工学 (ISSN:09192948)

巻号頁・発行日

vol.51, no.7, pp.497-508, 2016 (Released:2016-07-05)

参考文献数

16

被引用文献数

4

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Electrical power generation devices that use lead zirconate titanate piezoelectric (PZT) elements have been developed to convert structural vibration energy into electrical energy. We have reported the effects of vibration loads on the power-generation characteristics of a PZT element doped with niobium (Nb), and have proposed the use of laminated PZT elements to significantly improve the power-generation characteristics of PZT elements. In this study, we have made three-layer, five-layer and seven-layer PZT elements. In the experimental study, the effects of the number of layers of the laminated PZT element, the loads and frequencies of the powergeneration characteristics of the laminated PZT element are evaluated by vibration tests. The results indicated that the maximum electric power of a seven-layer PZT test piece in this study was around 3.8 mW and yielded about 23 times more power than a single-layers PZT element. Their results shows the generation characteristics were improved by laminated PZT elements when the number of folds was increased.

著者

藤本 滋 今井 健嗣 一木 正聡

出版者

公益社団法人 日本設計工学会

雑誌

設計工学 (ISSN:09192948)

巻号頁・発行日

vol.52, no.9, pp.567-582, 2017 (Released:2017-09-05)

参考文献数

17

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Electrical power generation devices that use piezoelectric lead zirconate titanate (PZT) have been developed to convert mechanical energy given by structural vibration into electrical energy. This paper describes an analytical and experimental study conducted to clarify the power-generation characteristics of the laminated PZT element doped with Nb 1.0 mol% under vibration loads and to examine optimal layer number of the laminated PZT element. In the analytical study, theoretical formulas on the power generation characteristics of the PZT element under the vibrational loads are derived by considering the equivalent circuit model consisting of the laminated PZT element. Optimal layer number deduced from the theoretical formula is 11 layers, and 11-layers PZT elements are produced in order to investigate the power-generation characteristics. In the experimental study, the effects of the number of layers of the laminated PZT element, the loads and frequencies on the power-generation characteristics of the laminated PZT element are evaluated by vibration tests. The experimentally obtained results are in good agreement with the values obtained theoretically and the validity of the theoretical formulas to vibration force of the laminated piezoelectric element was confirmed. Further, the optimal layer number of the laminated PZT element is confirmed to be 11 layers.

著者

本多 史明 細野 智史 末重 良宝 藤野 真久 須賀 唯知 一木 正聡 伊藤 寿浩

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)

巻号頁・発行日

vol.133, no.11, pp.B320-B325, 2013-11-01 (Released:2013-11-01)

参考文献数

9

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PZT (Pb(Zrx,Ti1-x)O3) thin film capacitors using Nano-transfer method has been developed for the fabrication technology of smaller capacitors. The adhesion strength of Pt to SiO2 was shown to be important among process factors. The adhesion force was shown to be originated from the material diffusion in the crystallization process mainly by the observation of TEM and XPS analysis. In this paper, diffusion of ingredients of PZT which is supposed to be one of the factors of the variation was investigated. It was confirmed that diffusion of Pb certainly occurs and this diffusion reinforces the adhesion strength in accordance with the Pt thickness. It is concluded that the diffusion is surely one of the factors of the variation of the adhesion strength.

著者

飯村 慶太 細野 智史 一木 正聡 伊藤 寿浩 須賀 唯知

出版者

一般社団法人エレクトロニクス実装学会

雑誌

エレクトロニクス実装学術講演大会講演論文集 第24回エレクトロニクス実装学術講演大会

巻号頁・発行日

pp.228-229, 2010 (Released:2014-07-17)

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プリント基板の小型化にあたり基板表面の受動素子を基板内部に内蔵する考えがある。コンデンサの内蔵においては強誘電体の結晶化に要求される高温プロセスに基板が耐えられず実用化されている基板内蔵コンデンサの誘電率は数十程度である。そこでナノトランスファー法と呼ばれるプロセスを用いて基板外部で強誘電体に高熱処理を加えた後、剥離転写により目的の基板に実装させることで基板に高熱処理をかけることを避け、高誘電率基板内蔵コンデンサを実現する。強誘電体としてPZT、電極にはPtやCuを用いて剥離実験を行いその剥離特性を得た。これから剥離プロセスにおけるいくつかのメカニズムについての知見を特性と合わせて報告する。

著者

関根 信義 内山 一輝 北原 時雄 一木 正聡 藤本 滋

出版者

一般社団法人日本機械学会

雑誌

山梨講演会講演論文集 : Yamanashi district conference

巻号頁・発行日

vol.2007, pp.92-93, 2007-10-19