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. Author manuscript; available in PMC: 2006 Jan 31.
Published in final edited form as: Asian J Control. 2004 Jun;6(2):164–178. doi: 10.1111/j.1934-6093.2004.tb00195.x

Figure 6.

Figure 6

Experimental AFM images of collagen (type I) obtained when using the inversion-based feedback/feedforward approach at scan frequencies of: (a) 30 Hz; (b) 50 Hz; (c) 90 Hz; and (d) 150 Hz. The scan size is 2.4 μm × 2.4 μm, and the z-Scale represents the normalized AFM-probe deflection, V^z(x,y),given by Eq. (13).