精确控制液膜破裂与纳米粒子图案化组装研究

Ordered assembly of nanoparticles is the bridge to connect the functionalization of single nanoparticle and the realization of fabricating micro-photoelectric. However, many problems such as assembly with single kind of nanoparticles, complex assembly process and random assembly sites still generally exist in existing methods of nanoparticle assembly. This study constructs a micro-fine structure to control the liquid film rupture and the nanoparticles assembly in the liquid film, which puts forward a new idea about the patterned assembly of nanoparticles. The influences of the micro-fine structure, the liquid film's surface tension and viscosity impact on the process of liquid film rupture are systemically studied. Furthermore, the assembly behavior of different types of nanoparticles with the liquid film rupture in micro-fine structure is also studied. The large scale patterned assembly of different nanoparticles wil be realized rapidly and facilely. Subsquently, controllable assembly patterns of functional nanoparticles will be applied in the fields of optics, electricity, and magnetism. This study will provide theoretical and technical basis for the fabrication of micro-nano functional photoelectric devices, which not only has important science meaning but also owns promising applications.

纳米粒子的有序组装是连接单个纳米粒子功能化和实现微型光电器件制备的桥梁。针对目前各种组装纳米粒子的研究方法仍然存在组装类型单一、组装过程复杂、组装位点随机等不足，本项目从构筑控制液膜破裂的微精细结构、调控纳米粒子在液膜中的组装行为两方面，提出对纳米粒子图案化可控组装的新思路。通过设计一种精确控制液膜破裂的微精细结构模板，系统研究结构中的图案组成、基材表面的浸润性以及液膜的表面张力、粘度对液膜破裂过程的影响；进一步研究不同类型的纳米粒子随着液膜破裂在微精细结构中的组装行为,实现纳米粒子的简单、快速、大面积图案化组装；并基于上述两方面的结果，研究功能性纳米粒子在图案化可控组装后在光学、电学、磁学等领域的潜在应用。本项目的研究将为利用纳米粒子组装实现微型纳米光电功能器件的制备提供理论和技术基础,具有重要的科学意义和应用前景。

设计了一种精确控制液膜破裂的微精细结构模板，系统研究了结构中的图案组成、基材表面的浸润性以及液膜的表面张力、粘度对液膜破裂过程的影响；进一步研究了不同类型的纳米粒子随着液膜破裂在微精细结构中的组装行为，实现了纳米粒子的简单、快速、大面积图案化组装；并基于上述两方面的结果，研究了功能性纳米粒子在图案化可控组装后在光学、电学、磁学等领域的潜在应用。发表论文59篇，获授权中国发明专利25项，应邀在国内外学术会议做邀请报告20次，获2016年北京市科学技术一等奖。