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

机译：（100）具有增强压电特性的纹理化KNN基厚膜，用于血管内超声成像

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摘要

Using tape-casting technology, 35 μm free-standing (100)-textured Li doped KNN (KNLN) thick film was prepared by employing NaNbO_3 (NN) as template. It exhibited similar piezoelectric behavior to lead containing materials: a longitudinal piezoelectric coefficient (d_(33)) of ～150 pm/V and an electromechanical coupling coefficient (k_t) of 0.44. Based on this thick film, a 52 MHz side-looking miniature transducer with a bandwidth of 61.5% at -6dB 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 (＞50 MHz) imaging.
机译：采用流延技术，以NaNbO_3（NN）为模板，制备了35μm自立（100）织构的Li掺杂的KNN（KNLN）厚膜。它表现出与含铅材料类似的压电特性：纵向压电系数（d_（33））约为150 pm / V，机电耦合系数（k_t）为0.44。基于该厚膜，为血管内超声（IVUS）成像构建了一个52 MHz的侧面微型传感器，在-6dB时带宽为61.5％。与40 MHz PMN-PT单晶换能器相比，兔主动脉图像具有更好的分辨率和更高的信噪比，表明无铅（100）纹理的KNLN厚膜可能适用于IVUS（> 50 MHz ）成像。

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  • 来源
    《Applied Physics Letters》 |2015年第17期|173504.1-173504.4|共4页
  • 作者

    Benpeng Zhu; Zhiqiang Zhang; Teng Ma; Xiaofei Yang; Yongxiang Li; K. Kirk Shung; Qifa Zhou;

  • 作者单位

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China,Department of Biomedical Engineering, NIH Transducer Resource Center, University of Southern California, Los Angeles, California 90089-1111, USA,State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Shanghai, 200050, China;

    Key Laboratory of Inorganic Functional Materials and Devices, Chinese Academy of Sciences, Shanghai 200050, China;

    Department of Biomedical Engineering, NIH Transducer Resource Center, University of Southern California, Los Angeles, California 90089-1111, USA;

    School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China;

    Key Laboratory of Inorganic Functional Materials and Devices, Chinese Academy of Sciences, Shanghai 200050, China;

    Department of Biomedical Engineering, NIH Transducer Resource Center, University of Southern California, Los Angeles, California 90089-1111, USA;

    Department of Biomedical Engineering, NIH Transducer Resource Center, University of Southern California, Los Angeles, California 90089-1111, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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  • 入库时间 2022-08-18 03:15:05

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