YIN Bo-hua, CHEN Dai-xie, LIN Yun-sheng, CHU Ming-zhang, HAN Li. Design of AFM system with high speed and large scanning range[J]. Editorial Office of Optics and Precision Engineering, 2011,19(11): 2651-2656
YIN Bo-hua, CHEN Dai-xie, LIN Yun-sheng, CHU Ming-zhang, HAN Li. Design of AFM system with high speed and large scanning range[J]. Editorial Office of Optics and Precision Engineering, 2011,19(11): 2651-2656 DOI: 10.3788/OPE.20111911.2651.
Design of AFM system with high speed and large scanning range
As current high-speed scanning Atomic Force Microscope (AFM) is mainly designed for the biological imaging application and its scanning speed and scanning range should be improved
a novel high speed AFM was designed. Based on the flexure guide structure driven by piezo actuators
the AFM scanner with a large range was proposed
by which the AFM scanning range is expanded to 100 m100 m in the
x-y
directions. By the Fourier expansion
the high harmonic characteristics of the common triangle and sinusoidal driving signals were analyzed
and their effects on the high speed scanning image were discussed. To avoid the mechanical self-oscillation of the stage during scanning
the sinusoidal driving signal was taken to drive the high speed scanning and the line-scan speed was up to 50 line/s. Finally
a new method to eliminate AFM nonlinearity error based on positioning sampling was designed. This method effectively reduces the image distortion resulted from nonlinear errors of the AFM scanner.
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references
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