Статья

(100)-Textured KNN-based thick film with enhanced piezoelectric property for intravascular ultrasound imaging

Benpeng ZhuHuazhong University of Science and Technology 1 School of Optical and Electronic Information, , Wuhan 430074, ChinaZhiqiang ZhangKey Laboratory of Inorganic Functional Materials and Devices 2 , Chinese Academy of Sciences, Shanghai 200050, ChinaTeng MaUniversity of Southern California 3 Department of Biomedical Engineering, NIH Transducer Resource Center, , Los Angeles, California 90089-1111, USAXiaofei YangHuazhong University of Science and Technology 1 School of Optical and Electronic Information, , Wuhan 430074, ChinaYongxiang LiKey Laboratory of Inorganic Functional Materials and Devices 2 , Chinese Academy of Sciences, Shanghai 200050, ChinaK. Kirk ShungUniversity of Southern California 3 Department of Biomedical Engineering, NIH Transducer Resource Center, , Los Angeles, California 90089-1111, USAQifa ZhouUniversity of Southern California 3 Department of Biomedical Engineering, NIH Transducer Resource Center, , Los Angeles, California 90089-1111, USA

2015en

ABI

Аннотация

Using tape-casting technology, 35 μm free-standing (100)-textured Li doped KNN (KNLN) thick film was prepared by employing NaNbO3 (NN) as template. It exhibited similar piezoelectric behavior to lead containing materials: a longitudinal piezoelectric coefficient (d33) of ∼150 pm/V and an electromechanical coupling coefficient (kt) of 0.44. Based on this thick film, a 52 MHz side-looking miniature transducer with a bandwidth of 61.5% at −6 dB was built for Intravascular ultrasound (IVUS) imaging. In comparison with 40 MHz PMN-PT single crystal transducer, the rabbit aorta image had better resolution and higher noise-to-signal ratio, indicating that lead-free (100)-textured KNLN thick film may be suitable for IVUS (&gt;50 MHz) imaging.

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Идентификаторы

DOI: 10.1063/1.4919387

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar