Switching adhesion forces by crossing the metal–insulator transition in Magnéli-type vanadium oxide crystals

• Bert Stegemann,
• Matthias Klemm,
• Siegfried Horn and
• Mathias Woydt

Beilstein J. Nanotechnol. 2011, 2, 59–65, doi:10.3762/bjnano.2.8

• performed with the same tip. SEM images of a Ti microsphere (diameter 7.2 µm) attached at the free end of a single beam tipless AFM cantilever. Acknowledgments The authors are grateful to H. Backhaus and B. Strauss for experimental assistance and to H. Kloss, C. Marwitz, D. Spaltmann and E. Santner for

Tip-sample interactions on graphite studied using the wavelet transform

• Giovanna Malegori and
• Gabriele Ferrini

Beilstein J. Nanotechnol. 2010, 1, 172–181, doi:10.3762/bjnano.1.21

• and topography is compatible with 1–30 ms/pixel data acquisition times required for practical DFS imaging. Conclusion The interaction of an AFM cantilever tip with a graphite sample is measured by applying the wavelet transform analysis to its Brownian motion near the surface. The wavelet transform

The description of friction of silicon MEMS with surface roughness: virtues and limitations of a stochastic Prandtl–Tomlinson model and the simulation of vibration-induced friction reduction

• W. Merlijn van Spengen,
• Viviane Turq and
• Joost W. M. Frenken

Beilstein J. Nanotechnol. 2010, 1, 163–171, doi:10.3762/bjnano.1.20

• the counter-surface flipped upright in its hinges with a probe needle, allowing easy access with an AFM cantilever tip. The AFM has been used to measure the surface roughness (Figure 6) on the sidewall at the position where the arrow indicating ‘Counter-surface’ is pointing. Autocorrelation function

Sensing surface PEGylation with microcantilevers

• Natalija Backmann,
• Natascha Kappeler,
• Thomas Braun,
• François Huber,
• Hans-Peter Lang,
• Christoph Gerber and
• Roderick Y. H. Lim

Beilstein J. Nanotechnol. 2010, 1, 3–13, doi:10.3762/bjnano.1.2

• reversible collapse when switching between good and poor solvent conditions, respectively. Keywords: AFM; cantilever sensor; polyethylene glycol; polymer brush; reversible collapse; static mode; Introduction Polyethylene glycol (PEG) is often used as a protein-resistant surface layer in biomedicine and

• or steric repulsion of a polymer brush as described by the Alexander–de Gennes theory (in a limited range 0.2 < D/L < 0.9 [10][31][32]), where F is the measured force (as a function of D), kB is Boltzmann’s constant, T is the absolute temperature, Rtip is the radius of the AFM-cantilever tip, L is

• . Rectangular-shaped Si3N4 AFM-cantilevers (Biolever, Olympus/OBL, Veeco) with V-shaped tips were used in all measurements. Spring constant calibrations typically fell within a 20% margin of error from the nominal spring constant of 0.005 N/m. The radius of curvature of each AFM-cantilever tip (Rtip) was