Molecular dynamics simulation of polar chains under an external electric field

By means of molecular dynamics simulation the effect of external electric f ield on charged chains in the liquid state is investigated. Three types of hypothetical chains with different charge and weight distributions are stud ied. External electric fields with different forms, field strength and freq uency are examined. Results indicate that the populations of trans and gauc he configuration, the dipole moment of the chain, the dihedral angle correl ation function and the sequence of trans and gauche configuration are sensi tive to the strength and form of applied external field. The result and sig nificance of each of these properties are discussed.