ExternalForceField #

ExternalForceField contains a set of interactions between particle and an external field.

PositionRestraintInteraction #

It restrains a particle at a fixed point.

It also can restrain a particle at a fixed distance from a certain point.

PullingForceInteraction #

It applies a force to the specified particle.

CoMPullingForceInteraction #

It applies a force to the center of mass of the specified particles.

RectangularBoxInteraction #

It wraps the system by a rectangular box. It does not work under the periodic boundary condition.

ExternalDistanceInteraction #

It depends on the distance between particles and a structure such as a planner surface.

AFMFittingInteraction #

It depends on the correlation coefficient between pseudo AFM image and the reference image.

It is capable of fitting a biomolecular model to an experimental AFM image.