项目名称: 打印墨滴在多孔氧化铝表面上的可控浸润
项目编号: No.21303218
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 周海华
作者单位: 中国科学院化学研究所
项目金额: 25万元
中文摘要: 喷墨打印技术的核心问题之一是对打印墨滴在基材上的浸润铺展行为的控制。而目前喷墨打印墨滴在固体表面时的浸润铺展会引起液滴边缘不规则,打印分辨率降低的问题。针对这一问题,本项目拟通过选用具有纳微米孔结构的多孔氧化铝作为打印基材,优化打印墨滴组成,主要研究纳微结构及表面修饰对打印聚合物(指聚氨酯)液滴的浸润铺展行为的影响,对可控浸润提出新的解决思路。通过选用具有不同纳微结构的多孔氧化铝基材,调整打印用聚氨酯溶液的性能参数,研究纳微结构及聚氨酯溶液组成对打印液滴在多孔氧化铝表面上浸润铺展行为的影响,进一步研究已修饰的多孔氧化铝表面对浸润状态即Wenzel态和Cassie态之间的可控转变及三相接触线移动的影响规律。本项目的成功开展不仅能够为高精度打印技术提供理论基础,同时对于打印制备生物传感器、微流体设备、半导体器件及高性能光学器件具有重要意义。
中文关键词: 打印;可控浸润;表面修饰;多孔氧化铝;
英文摘要: The wetting and spread of jet ink on the substrate plays a key role in inkjet technology. When the inkjet droplets are jetted on the substrate, the wetting and spread behavior will cause nonuniformity on the edge of the droplets. This results in reducing inkjet resolution. In order to solve this problem, we will study the effect of hierarchical structure of substrate and surface modification of substrate on the wetting and spread behavior during jetting. We will in detail discuss and analyze the behaviors and effects between the different substrates and polymeric solutions, that is to say, certain polyurethane solutions are jetted on the different pore diameter and depth porous alumina substrates. Then we will further go insight into the effect factors of the transition between Wenzel and Cassie state and the moving of three-phase contact line. These results not only provide the theoretical fundament for high resolution and precision of inkjet technology, but also are of significance on fabricating biosensors, microfluid, and semiconductor and high performance optical devices.
英文关键词: inkjet;controlled wetting;surface modification;porous alumina;