Operation movies for LiqAFM

"Soft Material Liquid AFM Simulator" provides three modes as follows.
Parameter scan mode (Parameter Scan (Resonance Curve))
We examine the resonance frequency of the cantilever. At first, we calculate the time evolution of the cantilever motion for a sequence of frequencies, and obtain saturated amplitudes for their frequencies. We then estimate a resonance frequency from a frequency spectrum which is the amplitude of the cantilever vs. the frequency.
Non-viscoelastic dynamics mode (Point oscillation, Viscoelasticity off)
A cantilever is oscillated by an external force with a constant frequency at a single point on the sample surface. A sequential motion of the tip is calculated provided that there is no visco-elasticity of the sample.
Viscoelastic dynamics mode (Point oscillation, Viscoelasticity on)
A cantilever is oscillated by an external force with a constant frequency at a single point on the sample surface. A sequential motion of the tip is calculated; the tip contacts to a sample, pushes a sample, and detaches from a sample.



Operation movies for LiqAFM
Parameter scan mode (Parameter Scan (Resonance Curve))
We obtain a resonance frequency by simulating a frequency spectrum of a cantilever.
Non-viscoelastic dynamics mode (Point oscillation, Viscoelasticity off)
While the external force oscillates the cantilever's tail in liquid, we examine the time evolution of the amplitude of the cantilever's head. The tip is quite far from the sample surface so that the tip does not contact to the sample.
Viscoelastic dynamics mode (Point oscillation, Viscoelasticity on)
Taking account of the viscoelastic dynamics, we derive the time evolution of the displacement of the tip and the interaction force between the tip and the sample, when the tip contacts to a sample, pushes a sample, and detaches from a sample.