Development of a technique for controlling total resonances of a piezoelectric rectangular parallelepiped for ultra-small resonator

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630010
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: Osaka University
• Principal Investigator: Nakamura Nobutomo 大阪大学, 基礎工学研究科, 助教 (50452404)
• Co-Investigator(Kenkyū-buntansha): HIRAO Masahiko 大阪大学, 大学院基礎工学研究科, 教授 (80112027) ; OGI Hirotsugu 大阪大学, 大学院基礎工学研究科, 准教授 (90252626)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 圧電体 / 共振 / モード選択

Outline of Final Research Achievements

In this study, we investigated resonance vibrations of piezoelectric rectangular parallelepipeds for developing a method that excites and detects a specific vibrational mode. Electrodeless measurement system using plates antennas and a vibration-analysis program were developed, and effects of shape of piezoelectric materials and deposited metallic films on the mode selectivity were evaluated. Finally, we found that there were specific shapes of piezoelectric materials, in which a specific vibrational mode, similar to a longitudinal plane-wave mode, was selectively excited.

Free Research Field

ナノメカニクス