Dynamic magnetic field alignment and polarized emission of semiconductor nanoplatelets in a liquid crystal polymer

Abstract

Liquid crystals (LC) are promising materials for the fabrication of reconfigurable arrays of 2D nanomaterials but it remains difficult to achieve stable dispersions of nanomaterials. Here, the authors report on good dispersions of pristine CdSe nanoplatelets (NPLs) in LCs, and reversible, rapid control of their alignment and associated anisotropic photoluminescence using a magnetic field.