Utilizing multilayer lithium niobate elements for ultrasonic actuators

被引：21

作者：

Twiefel, Jens ^{[2
]}

Morita, Takeshi ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Frontier Sci, Kashiwa, Chiba 2778563, Japan

[2] Leibniz Univ Hannover, Inst Dynam & Vibrat Res, D-30167 Hannover, Germany

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2011年 / 166卷 / 01期

关键词：

Ultrasonic transducer; Piezoelectric material; Lithium niobate;

D O I：

10.1016/j.sna.2010.12.011

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ultrasonic actuators are used in a wide field of applications: ultrasonic welding, turning or milling supported by ultrasound vibrations or ultrasonic motors. Piezoelectric ultrasonic actuators typically work with PZT (lead zirconate titanate) ceramics. Recently, alternative materials become more and more interesting for their use in ultrasonic actuators, due to the upcoming restrictions on using lead in new products. This study investigates the capabilities of an alternative material: LiNbO3 (lithium niobate). The two major advantages of LiNbO3 are that it is a lead free material and the high Curie temperature of 1210 degrees C. The work is structured in two parts: First, a new way for the assembling of LiNbO3 multilayer stacks is proposed. Second, the proposed principal transducer is setup and characterized. The maximum gained vibration amplitude was 3.5 mu m(RMS) at the resonance-frequency of 23.5 kHz. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：78 / 82

页数：5

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