Dember photovoltaic effect (Dember effect) was used to study permeability of a thin layer of lyotropic liquid crystal (dipalmitoylphosphatidylcholine) at various temperatures. By photo dissociation of a photosensitive ionic dye dissolved in a lyotropic liquid crystal, an inhomogeneous distribution of charge carriers was induced in a thin liquid crystal layer. The diffusion relaxation of these charge distributions depends on the structure of lyotropic liquid crystal and show up itself in the temperature dependence of pulsed photoelectric response. The data obtained are in a good agreement with the results of dielectric measurements. In perspective, above method can be applied to examine permeability of natural and synthetic lipid vesicles (cells, exosomes, liposomes and other vesicles) relevant in medicine and to characterize the structural phase transitions in lipid membranes when modified by molecules of interest (e.g. cholesterol in liposomes to increase rigidity and stability).

使用Dember光电效应（Dember效应）来研究在不同温度下的溶致液晶（二棕榈酰磷脂酰胆碱）薄层的渗透性。通过溶解在溶致液晶中的光敏离子染料的光解离，在薄液晶层中引起电荷载流子的不均匀分布。这些电荷分布的扩散弛豫取决于溶致液晶的结构，并且在脉冲光电响应的温度依赖性中表现出来。所获得的数据与介电测量结果非常吻合。从角度来看，以上方法可用于检查天然和合成脂质囊泡（细胞，外泌体，例如脂质体中的胆固醇，以增加刚性和稳定性。