Abstract
As an approach to establishment of clustering from a liquid, I've Molecular dynamics simulation of clustering process from liquid droplet with adiabatic expansion, which is actually being used in the experiment. The method of changing into fragment with adiabatic expansion is being used for this clustering process. Molecular action inside liquid droplet was explained by simulating this, and compared with the principle of this method of clustering. Molecular binding around the surface of liquid droplet influenced whether clusters are formed deeply, and molecule action became what was different from that it was thinking about from the principle as a result.