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The purpose of this paper is implementation of fast imaging of AFM. In general AFM, the image is obtained from the control input of the Z-scanner. In this case, Fast imaging is prevented by the resonance peak of the plant. In authors' research group, the surface topography observer which is the surface topography estimating method based on the observer theory has been proposed. In this paper, the...
Purpose of this paper is realization of high-speed measurement atomic force microscope (AFM) from view point of the control technology without modification of the hardware. Almost commercial AFM, 3D-image is obtained from control input. High-speed imaging is possible if we can design feedback controller which achieves the high-bandwidth servo design. However, we know that it is restricted by bode...
This paper addresses the development of amplitude modulation atomic force microscopes (AM-AFM). The output of the AM-AFM is obtained from amplitude demodulation of the excited cantilever tip position. Thus, when the amplitude of the cantilever tip position is zero or maximum value, the output will be saturated. The output saturation prevents disturbance suppression. In this paper, the anti-saturation...
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