Garbovskiy Yuriy
UCCS BioFrontiers Center and Department of Physics, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA.
Nanomaterials (Basel). 2018 Jan 23;8(2):59. doi: 10.3390/nano8020059.
Various types of nanomaterials and alignment layers are considered major components of the next generation of advanced liquid crystal devices. While the steady-state properties of ion-capturing/ion-releasing processes in liquid crystals doped with nanoparticles and sandwiched between alignment films are relatively well understood, the kinetics of these phenomena remains practically unexplored. In this paper, the time dependence of ion-capturing/ion-releasing processes in liquid crystal cells utilizing contaminated nanoparticles and alignment layers is analyzed. The ionic contamination of both nanodopants and alignment films governs the switching between ion-capturing and ion-releasing regimes. The time dependence (both monotonous and non-monotonous) of these processes is characterized by time constants originated from the presence of nanoparticles and films, respectively. These time constants depend on the ion adsorption/ion desorption parameters and can be tuned by changing the concentration of nanoparticles, their size, and the cell thickness.
各种类型的纳米材料和取向层被认为是下一代先进液晶器件的主要组成部分。虽然夹在取向膜之间的掺杂纳米颗粒的液晶中离子捕获/离子释放过程的稳态性质相对得到了较好的理解，但这些现象的动力学实际上仍未得到探索。本文分析了利用受污染的纳米颗粒和取向层的液晶盒中离子捕获/离子释放过程的时间依赖性。纳米掺杂剂和取向膜的离子污染决定了离子捕获和离子释放机制之间的转换。这些过程的时间依赖性（单调和非单调）分别由源自纳米颗粒和薄膜存在的时间常数来表征。这些时间常数取决于离子吸附/离子解吸参数，并且可以通过改变纳米颗粒的浓度、其尺寸和盒厚度来进行调节。
