发明名称 |
Surface acoustic wave sensor |
摘要 |
A surface acoustic wave sensor for detecting a target substance by measuring the change in frequency due to the mass applied to a reaction membrane placed on a surface acoustic wave element having high sensitivity due to the improvement of the surface acoustic wave element structure. The surface acoustic wave sensor includes an SH-type surface acoustic wave and a rotated Y-cut LiTaO3 substrate having Euler angles (0°, 120° to 140°, 0°±5°); electrodes principally containing Au, for exciting a surface acoustic wave, the electrodes being arranged on the LiTaO3 substrate; and a reaction membrane bound to a target substance or a binding substance bound to the target substance covering the electrodes arranged on the LiTaO3 substrate. The interdigital transducers have a normalized thickness of about 3.0% to about 5.0%, the normalized thickness being determined by normalizing the thickness of the interdigital transducers by the wavelength of the surface acoustic wave. |
申请公布号 |
US7816837(B2) |
申请公布日期 |
2010.10.19 |
申请号 |
US20040561251 |
申请日期 |
2004.04.08 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
FUJIMOTO KOJI;KADOTA MICHIO;YOSHII YOSHIHARU |
分类号 |
H02N2/00;G01N29/02;G01N29/036;G01N29/24 |
主分类号 |
H02N2/00 |
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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