Dielectric Response and Properties of Polystyrene under External Electric Field

High-speed communication uses the GHz band and requires low energy loss during transmission. To reduce energy loss at GHz frequencies, materials with a low dielectric constant (Dk) and low dielectric loss (Df) should be used in circuits. The Df value is influenced by dipolar orientation polarization arising from relaxational motion in polymers. Understanding the relationship between molecular structure and Df will aid in designing low-Df materials, thereby accelerating material discovery.

In this study, we performed molecular dynamics simulations of polystyrene, used as a low-Df model material, with different tacticities and degrees of order under external electric fields. Dielectric loss values were calculated from the polarization response delay at 10 GHz.