Simple Simulation of Ferrofluid by Using Moldy

Abstract Ferrofluid is a new material created in recent hundred years, which has both flowability like liquids and magnetism that was only found in solid materials before. It is an amazing material but is not known well by people. Although there are some simulations of ferrofluid, the author of this paper thinks it is too complicated for the beginners of this field. In order to help beginners to understand ferrofluid, the author creates a very simple model of ferrofluid and simulates it. This model is very simple so that beginners can understand it easily. The molecular dynamic program used by the author is moldy , which is also simple and widely used. Considering moldy does not contain magnetic force, the author uses electric force to replace it, because these two forces share a lot of similarities. After simulation, the author uses VMD (Visual Molecular Dynamics) to see its structure and movement in microscope. The author thinks that it will really help the beginners to understand ferrofluid and enter this field easier and inspire researchers to create new materials.