Distinguishing magnetic and electrostatic interactions by a Kelvin probe force microscopy–magnetic force microscopy combination

• Miriam Jaafar,
• Oscar Iglesias-Freire,
• Luis Serrano-Ramón,
• Manuel Ricardo Ibarra,
• Jose Maria de Teresa and
• Agustina Asenjo

Beilstein J. Nanotechnol. 2011, 2, 552–560, doi:10.3762/bjnano.2.59

• an MFM probe) as the bias voltage was varied between ±1.5 V. The vertical profiles measured on the Co nanowire (black line) and on the substrate (red line) are shown in Figure 2c. Notice the parabolic dependence of the frequency shift versus voltage, which corresponds to an electrostatic interaction

Formation of precise 2D Au particle arrays via thermally induced dewetting on pre-patterned substrates

• Dong Wang,
• Ran Ji and
• Peter Schaaf

Beilstein J. Nanotechnol. 2011, 2, 318–326, doi:10.3762/bjnano.2.37

• nanoparticles, due to their wide range of potential applications in plasmonics [1][2], magnetic memories [3], DNA detection [4], and catalysis for nanowire and nanofiber growth [5][6]. Nanoparticle arrays are typically fabricated either by chemical processes based on self-assembly or by lithography based

A collisional model for AFM manipulation of rigid nanoparticles

• Enrico Gnecco

Beilstein J. Nanotechnol. 2010, 1, 158–162, doi:10.3762/bjnano.1.19

• ] and In the case (b): and In general, both core and cap collisions occur along each scan line and only numerical solutions are possible. However, a complete solution can be found in two important cases: The manipulation of a nanosphere of radius a (L = 0) and that of a thin nanowire of length L (a = 0

• α0 is the impact angle between tip and sphere (with the exception of the very first collision) and is given by In the case of a nanowire, the average direction of motion is well-defined and is given by the sim­ple formula [6] The wire oscillates perpendicularly to this direction: Thus, Equation 7 and

• the force F is directed along the x axis and the total force acting on the particle will be oriented as in tapping mode only if the static friction f can balance the component of F along the island profile. Angle of motion θ of a nanosphere (solid curve) and a nanowire (dashed curve) as a function of