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pubmed-article:20889407pubmed:issue10lld:pubmed
pubmed-article:20889407pubmed:dateCreated2010-10-4lld:pubmed
pubmed-article:20889407pubmed:abstractTextThis paper presents the development of a micromachined high-frequency linear array using PZT piezoelectric thick films. The linear array has 32 elements with an element width of 24 ?m and an element length of 4 mm. Array elements were fabricated by deep reactive ion etching of PZT thick films, which were prepared from spin-coating of PZT sol-gel composite. Detailed fabrication processes, especially PZT thick film etching conditions and a novel transferring-and-etching method, are presented and discussed. Array designs were evaluated by simulation. Experimental measurements show that the array had a center frequency of 80 MHz and a fractional bandwidth (-6 dB) of 60%. An insertion loss of -41 dB and adjacent element crosstalk of -21 dB were found at the center frequency.lld:pubmed
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pubmed-article:20889407pubmed:monthOctlld:pubmed
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pubmed-article:20889407pubmed:authorpubmed-author:ShungKKlld:pubmed
pubmed-article:20889407pubmed:authorpubmed-author:ZhouQifaQlld:pubmed
pubmed-article:20889407pubmed:authorpubmed-author:WuDaweiDlld:pubmed
pubmed-article:20889407pubmed:authorpubmed-author:LiuChanggengClld:pubmed
pubmed-article:20889407pubmed:authorpubmed-author:DjuthFrankFlld:pubmed
pubmed-article:20889407pubmed:authorpubmed-author:ZhuBenpengBlld:pubmed
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pubmed-article:20889407pubmed:volume57lld:pubmed
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pubmed-article:20889407pubmed:pagination2213-20lld:pubmed
pubmed-article:20889407pubmed:dateRevised2011-6-10lld:pubmed
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pubmed-article:20889407pubmed:year2010lld:pubmed
pubmed-article:20889407pubmed:articleTitleMicro-machined high-frequency (80 MHz) PZT thick film linear arrays.lld:pubmed
pubmed-article:20889407pubmed:affiliationResource Center for Medical Ultrasonic Transducer Technology, University of Southern California, Los Angeles, CA, USA.lld:pubmed
pubmed-article:20889407pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:20889407pubmed:publicationTypeResearch Support, N.I.H., Extramurallld:pubmed