Advanced Vibration Control of Atomic Force Microscope Scanner

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Author(s): Sajal K. Das (University of New South Wales, Australia), Hemanshu R. Pota (University of New South Wales, Australia)and Ian R. Petersen (University of New South Wales, Australia)
Copyright: 2015
Pages: 23
Source title: Handbook of Research on Advanced Intelligent Control Engineering and Automation
Source Author(s)/Editor(s): Ahmad Taher Azar (Benha University, Egypt)and Sundarapandian Vaidyanathan (Vel Tech University, India)
DOI: 10.4018/978-1-4666-7248-2.ch003

Keywords: Engineering Science Reference / Industrial Engineering / Science & Engineering

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Abstract

Atomic Force Microscopes (AFMs) are used in many nanopositioning applications in order to measure the topography of various specimens at an atomic level through surface imaging. The imaging of the samples in AFMs is carried out by using a three degree-of-freedom positioning unit called Piezoelectric Tube Scanner (PTS). The performance of the AFM mostly depends on the performance of the PTS. However, the PTS of the AFM suffers from the problem of vibration. This chapter presents a design of a damping controller to compensate the induced vibration of the scanner. Experimental results are presented to show the effectiveness of the proposed controller. The experimental results show that the proposed controller is able to compensate 90% of the vibration of the PTS.

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