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Beilstein J. Nanotechnol. 2016, 7, 1885–1904, doi:10.3762/bjnano.7.181
Figure 1: Schematic representation of functional elements of an NC-AFM described by transfer functions Hy. Qu...
Figure 2: Model for signal and noise propagation in an NC-AFM, highlighting the tip–sample interaction, PLL d...
Figure 3: Relations between the piezo position zp (tip position for resting cantilever), the lower turning po...
Figure 4: Determination of the tip–sample interaction parameter βts from the slope of a measured Δf(zp) curve...
Figure 5: Measured noise spectral density (solid lines) of (a, b) the frequency shift signal and (c, d) the a...
Figure 6: Frequency shift noise spectral density dΔf for the case of significant tip–sample interaction measu...
Figure 7: (a, b) Frequency shift noise spectral density dΔf and (c, d) topography noise spectral density wit...
Figure 8: (a, b) Frequency shift noise spectral density dΔf and (c, d) topography noise spectral density wit...
Figure 9: (a) Block diagram of interlaced control loops as introduced in Figure 2 and (b) signal-flow graph to demons...
Figure 10: (a) Calculated gain and (b) calculated step response of the amplitude control loop compared to (c) ...
Figure 11: (a) Calculated gain and (b) calculated step response of the PLL compared to (c) the measured step r...
Figure 12: (a, b) Frequency response and (c, d) step response of the distance control loop for a given tip–sam...
Figure 13: Ratio δα = −αts,2/αts,1 as a function of the z-position and the amplitude. A Morse interaction usin...
Beilstein J. Nanotechnol. 2013, 4, 227–233, doi:10.3762/bjnano.4.23
Figure 1: Displacement noise spectral density measured for the fundamental mode of cantilever V 4. Measureme...
Figure 2: (a) Measured resonance curve (solid line) of the excited cantilever V 4 with a fit (dotted line) of ...
Figure 3: Frequency shift noise spectral density measured for cantilever V 4 (A0 = 16.8 nm, demodulator band...
Beilstein J. Nanotechnol. 2013, 4, 32–44, doi:10.3762/bjnano.4.4
Figure 1: Schematic representation of the signal path in an NC-AFM system based on optical beam deflection wi...
Figure 2: Illustrative representation for the spectral density of the displacement of a cantilever excited to...
Figure 3: Illustrative representation of noise properties for a cantilever with f0 = 70 kHz, k = 2.5 N/m and Q...
Figure 4: Illustrative representation of the noise spectral density for the total frequency-shift noise = f...
Figure 5: Frequency response of the high-bandwidth preamplifier (bandwidth 3.1 MHz) and the low-bandwidth pre...
Figure 6: Measured and modelled noise figures for system C. (a) Different levels of displacement noise spectr...
Figure 7: (a) Measured (solid) and modelled (dashed) frequency-shift-noise spectral density using three diff...
Figure 8: (a) RMS frequency-shift noise δf and (b) normalised RMS frequency-shift noise δγ in the limit of pu...