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Quantitative dynamic-mode scanning force microscopy in liquid
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10.1063/1.2202638
/content/aip/journal/apl/88/19/10.1063/1.2202638
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/19/10.1063/1.2202638
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Red, solid curves (left axes): (a) amplitude and (b) phase of a cantilever in buffer solution, actuated by the piezostack on which the cantilever is mounted. Blue, solid curve [right axis in (a)]: thermal noise of the cantilever. The black, dashed curve overlaying the thermal noise in (a) is a harmonic-oscillator fit. The phase corresponding to this fit is depicted as a black, dashed curve in (b).

Image of FIG. 2.
FIG. 2.

(Color online) SFM imaging of the cleaved (001) surface of muscovite mica in buffer solution, with constant frequency shift and constant amplitude . (a) Forward and (b) backward scan (fast scan axis: horizontal). The vertical scale (black to white) is . A background plane has been subtracted from the data. The arrows point at two examples of atomic-scale defects, visible in both the forward and the backward scan. (c) Correlation-averaged image of the unit cell (vertical scale: ). (d) Line sections along the yellow lines in (a) and (b). The arrows indicate the fast scan direction (forward/backward) for both curves. The offset of the vertical scale is arbitrary.

Image of FIG. 3.
FIG. 3.

(Color online) Constant-force mode and dynamic mode (with constant frequency shift and amplitude) images of the cytoplasmic surface of purple membrane in aqueous solution. The data have been flattened. (a) Force , and vertical scale (black to white) . (b) , , , and vertical scale . (c) Force , and vertical scale . (d) , , , and vertical scale .

Image of FIG. 4.
FIG. 4.

(a) Frequency shift and (b) corresponding interaction force as a function of distance from a purple membrane sample. Zero distance corresponds to the closest approach of the cantilever to the sample during an oscillation with . Further conditions correspond to Fig. 3(b). The dashed, vertical lines in (b) indicate the shortest and longest distance between the tip and the sample for .

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/content/aip/journal/apl/88/19/10.1063/1.2202638
2006-05-09
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantitative dynamic-mode scanning force microscopy in liquid
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/19/10.1063/1.2202638
10.1063/1.2202638
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