发明名称 |
POROSITY CONTROL IN PIEZOELECTRIC FILMS |
摘要 |
A piezoelectric film having a porosity between 20 and 40%, a thickness ranging from tens of microns to less than a few millimeters can be used to form an ultrasonic transducer UT for operation in elevated temperature ranges, that emit pulses having a high bandwidth. Such piezoelectric films exhibit greater flexibility allowing for conformation of the UT to a surface, and obviate the need for couplings or backings. Furthermore, a method of fabricating an UT having these advantages as well as better bonding between the piezoelectric film and electrodes involves controlling porosity within the piezoelectric film. |
申请公布号 |
CA2846269(A1) |
申请公布日期 |
2013.02.28 |
申请号 |
CA20112846269 |
申请日期 |
2011.08.24 |
申请人 |
NATIONAL RESEARCH COUNCIL OF CANADA |
发明人 |
KOBAYASHI, MAKIKO;JEN, CHENG-KUEI |
分类号 |
H01L41/22;B06B1/06;G01H11/08;G01N29/34;H01L41/08 |
主分类号 |
H01L41/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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