Nanoscale ordering of planar octupolar molecules for nonlinear optics at higher temperatures

Abstract We develop scenarios for orientational ordering of an in-plane system small flat octupolar molecules at the low-concentration limit, aiming towards nonlinear-optical (NLO) applications room temperatures. The octupoles interact with external electric poling fields and intermolecular interactions are neglected. Simple statistical-mechanics models used to analyze order in very weak sufficient retrieving NLO signals owing high sensitivity detectors measurement chains. Two discussed. Firstly, field is imparted by a point charges; setup subject cell-related constraints imposed mechanical strength dielectric breakdown limit. benchmarking TATB shown emerge Helium second scenario addresses dipoling admixture dipolar component. It requires strong regime become effective Nitrogen temperature range. An estimation nonlinear susceptibility coefficient matrix both done high-temperature (weak interaction) limit formalism. argue that moderate modifications like, e.g. , increase size octupole, accompanied dipole-assisted octupoling, can above