转换光学器件用微液滴阵列大幅面制备工艺及光电协同光学操控作用机理研究

As an necessary component of active optical system, the transform optics device plays a very important role in the field of astronomy, aerospace, military, telecommunications, solar energy, imaging and biomedical engineering. Because of the real-time control of its spatial position and orientation, the micro droplet array takes advantages of ray capture and manipulation in wide field of view, under spatial electric field modulation. In this project, a novel fabrication method is proposed to prepare high density micro droplet array on substrates. The process is that, by lithography and electroforming process, the metal imprint template with micro/nano features is fabricated for embossing microcavity, and then nano features with controllable aspect ratio on the surface of microcavity substrate are rheological formed for their wetting characteristcs by spatial nonuniform electric field. The droplet, which is quantitative drip irrigating in the microcavity, is fixed at the wetting part of the sbustrate. Finally, the patterned graphene electrodes with excellent electrical/mechanical properties are prepared by ink-jet tools. So, in this project, we will focus on the designing of device structures, development of new fabrication principles, optimization of fabrication processes and characterization of functional properties of the droplet array on substrate. The concrete research contents include, localized electric field assisted filled imprint polymer rheology forming mechanism, analysis of micro droplet array under the spatial nonuniform electric field mechanical deformation, droplet pose and its dynamic response under electric field, light energy and optical information transformation under photoelectric coordinaion mechanism, and developing rapid, low-cost fabrication process of high density micro droplet array on substrate for transformation optical devices.

转换光学器件作为一种主动式光学系统在天文、航天、国防、通讯、能源、成像及生物医学等领域内有着极为重要的需求。液滴在空间电场调制作用下，实时调整其空间位姿及其内部介电常数分布，具有广域捕获和主动操控光信息/能量的特点，从而在时域和空间上实现光信息/能量的传输/传导的调制与操控。针对转换光学器件的对光信息/能量操控实时/广域的需求特点，本项目根据变深宽比微/纳结构表面亲疏水特性的差异特点，以定域化电场诱导辅助填充的压印工艺制备变深宽比的特征结构，实现微液滴阵列在基底表面上的固定“扎钉”；通过微液滴阵列的定域化制备工艺，探索空间电场调制作用下的液滴空间位姿动态响应规律和光/电协同光学转换(光信息/能量的调制与操控)作用机理，结合石墨烯透明电极浆料微结构图形化和微液滴的定量化灌注工艺，实现微液滴阵列化光电协同转换光学器件的制造。

转换光学器件作为一种主动式光学系统在天文、航天、国防、通讯、能源、成像及生物医学等领域内有着极为重要的需求。液滴在空间电场调制作用下，实时调整其空间位姿及其内部介电常数分布，具有广域捕获和主动操控光信息/能量的特点，从而在时域和空间上实现光信息/能量的传输/传导的调制与操控。针对转换光学器件的对光信息/能量操控实时/广域的需求特点，本项目根据变深宽比微/纳结构表面亲疏水特性的差异特点，以定域化电场诱导辅助填充的压印工艺制备变深宽比的特征结构，实现微液滴阵列在基底表面上的固定“扎钉”；通过微液滴阵列的定域化制备工艺，探索空间电场调制作用下的液滴空间位姿动态响应规律和光/电协同光学转换(光信息/能量的调制与操控)作用机理，结合石墨烯透明电极浆料微结构图形化和微液滴的定量化灌注工艺，实现微液滴阵列化光电协同转换光学器件的制造。主要工作包括：1、设计并完成了一种基于模板诱导微液滴阵列流变成形的方法；2、探索了多场耦合作用下微液滴阵列流变成形的基本规律；3、探索了多场耦合作用下微液滴阵列流变成形的基本规律；4、通过实验加仿真的方法，对亲水/超疏水异质表面固定的振动液滴匀光系统进行分析研究。