A serial-kinematic nanopositioner for high-speed atomic force microscopy

作者：Wadikhaye Sachin P^*; Yong Yuen Kuan; Moheimani S O Reza

来源：Review of Scientific Instruments, 2014, 85(10): 105104.

DOI：10.1063/1.4897483

A flexure-guided serial-kinematic XYZ nanopositioner for high-speed Atomic Force Microscopy is presented in this paper. Two aspects influencing the performance of serial-kinematic nanopositioners are studied in this work. First, mass reduction by using tapered flexures is proposed to increased the natural frequency of the nanopositioner. 25% increase in the natural frequency is achieved due to reduced mass with tapered flexures. Second, a study of possible sensor positioning in a serial-kinematic nanopositioner is presented. An arrangement of sensors for exact estimation of cross-coupling is incorporated in the proposed design. A feedforward control strategy based on phaser approach is presented to mitigate the dynamics and nonlinearity in the system. Limitations in design approach and control strategy are discussed in the Conclusion.

• 出版日期2014-10