2-19. Light directed high-throughput deposition technology

Lin Cong, Yu Xing
1. Fuzhou University; 2. Iron and Steel Research Institute

Abstract:Based on the electrophoretic deposition technology, the light directed deposition technology regulates the intensity of the deposition electric field by changing the photoelectric effect of the photoelectric electrode, and differentiates the composition of the deposition products at different positions, so as to realize the high-throughput material preparation. In the light directed technology, the light directed effect is mainly determined by the intensity, intensity distribution and the nature of the optical electrode. In the process of deposition, the electric field intensity and its distribution are the main factors to influence the composition distribution of the deposits. Meanwhile, the properties of multiphase suspension also play a crucial role in the regulation of deposit components. This report introduces the basic principle and equipment construction of the light directed deposition technology, analyzes the influencing factors of the light directed effect, and realizes the graphical deposition. The mechanism of electrophoretic deposition on the multiphase components was also studied. Through the combination of light intensity regulation and the non-uniformity of electric field distribution on the electrode, the light directed high-throughput preparation of multiphase materials was initially attempted. The technology of light directed deposition is expected to exert its advantages in the field of high-throughput preparation of multiphase materials and layered materials.

光定向高通量沉积制备技术

林枞，余兴
1. 福州大学;2. 钢铁研究总院 

摘要:光定向沉积技术是在电泳沉积制备技术的基础上，在光电阳极上通过改变光电极产生的 光电效应，调控沉积电极上的沉积电场强度，实现在不同位置上的沉积产物组分的差异化，从 而实现材料制备的高通量化。在光定向技术中，光的定向作用主要由光强、光强分布和光电极 的性质决定;在沉积过程中，电场强度及其分布是影响沉积产物组分分布的核心，同时复相悬 浮液的性质也会对沉积组分的调控起到至关重要的作用。本报告介绍了光定向沉积技术的基本 原理和设备构造，分析了光定向作用的影响因素，实现了图案化的定向沉积;并研究了复相电 泳沉积对组分的调控机制，通过光强的调控和电极上电场分布的不均匀性相结合，初步尝试实 现了复相材料的光定向高通量制备。光定向沉积技术有望在复相材料、层状材料的高通量制备领域发挥其优势。