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    • 3. 发明申请
    • METHOD AND APPARATUS OF DRIVING TORSIONAL RESONANCE MODE OF A PROBE-BASED INSTRUMENT
    • 探测基于探针的仪器的扭转共振模式的方法和设备
    • WO2006029292A2
    • 2006-03-16
    • PCT/US2005/032098
    • 2005-09-09
    • VEECO INSTRUMENTS INC.SU, ChanminDANIELS, Robert
    • SU, ChanminDANIELS, Robert
    • G12B21/22G12B21/02G12B21/20G01N13/10
    • G01Q10/06G01Q60/26G01Q60/32G01Q60/34G01Q60/38
    • A method of operating a scanning probe microscope includes using a probe having a cantilever, and oscillating the probe at a torsional resonance frequency thereof. In addition, the method includes substantially increasing torsional drive efficiency with dual actuators disposed on the probe or the probe base. First and second actuators may be driven by corresponding first and second drive signals, the first and second drive signals being about 180 degrees out of phase. The maximizing step includes altering at least one of the amplitudes of the first and second drive signals to maximize torsional oscillation. Torsional and flexural oscillation of the cantilever probe can be excited concurrently, sequentially or independently by adjusting the phase of the corresponding drive signals. A pair of cantilever components can be used to form a nanotweezer by rotating the respective arms having corresponding tip portions at the distal ends.
    • 操作扫描探针显微镜的方法包括使用具有悬臂的探针,并且使探针以其扭转共振频率振荡。 此外,该方法包括利用设置在探针或探针基座上的双致动器大幅增加扭转驱动效率。 第一和第二致动器可以由相应的第一和第二驱动信号驱动,第一和第二驱动信号的相位差约为180度。 最大化步骤包括改变第一和第二驱动信号的振幅中的至少一个以使扭转振荡最大化。 通过调节相应的驱动信号的相位,可以同时,顺序地或独立地激励悬臂探针的扭转和弯曲振荡。 通过旋转在远端处具有对应尖端部分的相应臂,可以使用一对悬臂部件来形成纳米纤维状物。