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    • 2. 发明授权
    • Piezoelectric microcantilevers and uses in atomic force microscopy
    • 压电微悬臂梁和原子力显微镜的应用
    • US07992431B2
    • 2011-08-09
    • US11946534
    • 2007-11-28
    • Wan Y. ShihWei-Heng ShihZuyan ShenQing Zhu
    • Wan Y. ShihWei-Heng ShihZuyan ShenQing Zhu
    • G01B5/28
    • G01Q60/38B82Y35/00G01B9/04G01Q10/045G01Q20/04Y10T29/42
    • The invention is direct to a piezoelectric microcantilever for static contact and dynamic noncontact atomic force microscopy which may be carried out in solution. The piezoelectric microcantilever, which includes a piezoelectric layer and a non-piezoelectric layer is capable of self actuation and detection. The piezoelectric layer may be constructed from a lead magnesium niobate-lead titanate (Pb(Mg1/3Nb2/3)O3)0.65—(PbTiO3)0.35(PMN0.65-PT0.35)(PMN-PT), zirconate titanate (PZT)/SiO2 or from any lead-free piezoelectric materials such as doped sodium-potassium niobate-lithium niobate. The piezoelectric layers of the microcantilevers may have dielectric constants of from 1600-3000 and thicknesses below 10 μm. Also disclosed are methods for fabricating microcantilever sensors and methods for atomic force microscopy employing the microcantilevers.
    • 本发明直接用于静态接触和动态非接触原子力显微镜的压电微悬臂梁,其可以在溶液中进行。 包括压电层和非压电层的压电微悬臂梁能够自动启动和检测。 压电层可以由铌酸铅镁酸铅(Pb(Mg1 / 3Nb2 / 3)O3)0.65-(PbTiO3)0.35(PMN0.65-PT0.35)(PMN-PT),锆钛酸铅(PZT) )/ SiO 2或来自任何无铅压电材料如掺杂的铌酸钠 - 铌酸锂 - 铌酸锂。 微悬臂梁的压电层可以具有1600-3000的介电常数和低于10μm的厚度。 还公开了用于制造微悬臂梁传感器的方法和使用微悬臂梁的原子力显微镜的方法。
    • 4. 发明授权
    • Piezoelectric cantilever sensors
    • 压电悬臂传感器
    • US07458265B2
    • 2008-12-02
    • US10595570
    • 2004-10-27
    • Wan Y. ShihWei-Heng ShihZuyan Shen
    • Wan Y. ShihWei-Heng ShihZuyan Shen
    • G01N5/04G01N25/08
    • G01N29/022G01N5/02G01N29/036G01N2291/0255G01N2291/0256G01N2291/02818G01N2291/0422G01N2291/0426G01N2291/0427
    • A piezoelectric cantilever with a non-piezoelectric, or piezoelectric tip useful as mass and viscosity sensors. The change in the cantilever mass can be accurately quantified by monitoring a resonance frequency shift of the cantilever. For bio-detection, antibodies or other specific receptors of target antigens may be immobilized on the cantilever surface, preferably on the non-piezoelectric tip. For chemical detection, high surface-area selective absorbent materials are coated on the cantilever tip. Binding of the target antigens or analytes to the cantilever surface increases the cantilever mass. Detection of target antigens or analytes is achieved by monitoring the cantilever's resonance frequency and determining the resonance frequency shift that is due to the mass of the adsorbed target antigens on the cantilever surface. The use of a piezoelectric unimorph cantilever allows both electrical actuation and electrical sensing. Incorporating a non-piezoelectric tip (14) enhances the sensitivity of the sensor. In addition, the piezoelectric cantilever can withstand damping in highly viscous liquids and can be used as a viscosity sensor in wide viscosity range.
    • 具有非压电或压电尖端的压电悬臂,可用作质量和粘度传感器。 通过监测悬臂的共振频率偏移可以准确量化悬臂质量的变化。 为了生物检测,靶抗原的抗体或其他特异性受体可以固定在悬臂表面上,优选地固定在非压电尖端上。 对于化学检测,高表面积选择性吸收材料涂覆在悬臂尖端。 目标抗原或分析物与悬臂表面的结合增加了悬臂质量。 通过监测悬臂的共振频率并确定由于悬臂表面上吸附的靶抗原的质量而引起的共振频移,实现了靶抗原或分析物的检测。 使用压电单块悬臂可以实现电致动和电感测。 结合非压电尖端(14)增强了传感器的灵敏度。 此外,压电悬臂可以承受高粘度液体中的阻尼,可用作宽粘度范围内的粘度传感器。
    • 7. 发明授权
    • Piezoelectric microcantilevers and uses in atomic force microscopy
    • 压电微悬臂梁和原子力显微镜的应用
    • US08857248B2
    • 2014-10-14
    • US13160304
    • 2011-06-14
    • Wan Y. ShihWei-Heng ShihZuyan ShenQing Zhu
    • Wan Y. ShihWei-Heng ShihZuyan ShenQing Zhu
    • G01B5/28G01B9/04G01Q10/04G01Q20/04G01Q60/38B82Y35/00
    • G01Q60/38B82Y35/00G01B9/04G01Q10/045G01Q20/04Y10T29/42
    • The invention is direct to a piezoelectric microcantilever for static contact and dynamic noncontact atomic force microscopy which may be carried out in solution. The piezoelectric microcantilever, which includes a piezoelectric layer and a non-piezoelectric layer is capable of self actuation and detection. The piezoelectric layer may be constructed from a lead magnesium niobate-lead titanate (Pb(Mg1/3Nb2/3)O3)0.65—(PbTiO3)0.35(PMN0.65-PT0.35) (PMN-PT), zirconate titanate (PZT)/SiO2 or from any lead-free piezoelectric materials such as doped sodium-potassium niobate-lithium niobate. The piezoelectric layers of the microcantilevers may have dielectric constants of from 1600-3000 and thicknesses below 10 μm. Also disclosed are methods for fabricating microcantilever sensors and methods for atomic force microscopy employing the microcantilevers.
    • 本发明直接用于静态接触和动态非接触原子力显微镜的压电微悬臂梁,其可以在溶液中进行。 包括压电层和非压电层的压电微悬臂梁能够自动启动和检测。 压电层可以由铌酸铅镁酸铅(Pb(Mg1 / 3Nb2 / 3)O3)0.65-(PbTiO3)0.35(PMN0.65-PT0.35)(PMN-PT),锆钛酸铅(PZT) )/ SiO 2或来自任何无铅压电材料如掺杂的铌酸钠 - 铌酸锂 - 铌酸锂。 微悬臂梁的压电层可以具有1600-3000的介电常数和低于10μm的厚度。 还公开了用于制造微悬臂梁传感器的方法和使用微悬臂梁的原子力显微镜的方法。
    • 9. 发明申请
    • Piezoelectric cantilever sensors
    • 压电悬臂传感器
    • US20070089515A1
    • 2007-04-26
    • US10595570
    • 2004-10-27
    • Wan ShihWei-Heng ShihZuyan Shen
    • Wan ShihWei-Heng ShihZuyan Shen
    • G01H13/00
    • G01N29/022G01N5/02G01N29/036G01N2291/0255G01N2291/0256G01N2291/02818G01N2291/0422G01N2291/0426G01N2291/0427
    • A piezoelectric cantilever with a non-piezoelectric, or piezoelectric tip useful as mass and viscosity sensors. The change in the cantilever mass can be accurately quantified by monitoring a resonance frequency shift of the cantilever. For bio-detection, antibodies or other specific receptors of target antigens may be immobilized on the cantilever surface, preferably on the non-piezoelectric tip. For chemical detection, high surface-area selective absorbent materials are coated on the cantilever tip. Binding of the target antigens or analytes to the cantilever surface increases the cantilever mass. Detection of target antigens or analytes is achieved by monitoring the cantilever's resonance frequency and determining the resonance frequency shift that is due to the mass of the adsorbed target antigens on the cantilever surface. The use of a piezoelectric unimorph cantilever allows both electrical actuation and electrical sensing. Incorporating a non-piezoelectric tip (14) enhances the sensitivity of the sensor. In addition, the piezoelectric cantilever can withstand damping in highly viscous liquids and can be used as a viscosity sensor in wide viscosity range.
    • 具有非压电或压电尖端的压电悬臂,可用作质量和粘度传感器。 通过监测悬臂的共振频率偏移可以准确量化悬臂质量的变化。 为了生物检测,靶抗原的抗体或其他特异性受体可以固定在悬臂表面上,优选地固定在非压电尖端上。 对于化学检测,高表面积选择性吸收材料涂覆在悬臂尖端。 目标抗原或分析物与悬臂表面的结合增加了悬臂质量。 通过监测悬臂的共振频率并确定由于悬臂表面上吸附的靶抗原的质量而引起的共振频移,实现了靶抗原或分析物的检测。 使用压电单块悬臂可以实现电致动和电感测。 结合非压电尖端(14)增强了传感器的灵敏度。 此外,压电悬臂可以承受高粘度液体中的阻尼,可用作宽粘度范围内的粘度传感器。