10MHz短脉冲超声聚焦换能器的工艺及效果  

The technology and physical properties of 10MHz short pulse ultrasonic focused transducer

作　　者：诸国桢[1] 杨勇[1] 卢克安[1] 

机构地区：[1]清华大学物理系,北京100084

出　　处：《声学技术》2001年第3期122-124,共3页Technical Acoustics

摘　　要：文章报导了为生物医学研究用的聚焦换能器 ,可以在水中发出延续时间为一个半周期 ,主频为 10MHz的超声脉冲。文中介绍了研制工艺 ,并给出换能器以下的物理特性 :1.用光学法拍摄的换能器在水中的聚焦过程 ;2 .激发换能器的电脉冲波形及接收电压的波形和幅值 ;3 .An ultrasonic focused transducer mainly used in biomedical technology, with its main frequency of 10MHz and the duration of one and a half periods, is described in detail in this paper. The following physical properties of this transducer are given: 1.The focused acoustic field recorded by an optical method; 2.The electric waveform for triggering the transducer and the related waveform received by another transducer; 3.The testing results of a sample.

关 键 词：生物医学研究 聚焦换能器 无损检测 超声脉冲 工艺 激发换能器 电脉冲波形 

分 类 号：R318[医药卫生—生物医学工程] TB552[医药卫生—基础医学]