Dielectric Photomasks for Nanopatterning Arbitrary Molecular Orientations

用于任意分子取向纳米图案化的介电光掩模

基本信息

  • 批准号:
    1663394
  • 负责人:
  • 金额:
    $ 30万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2017
  • 资助国家:
    美国
  • 起止时间:
    2017-07-01 至 2021-06-30
  • 项目状态:
    已结题

项目摘要

Controlling molecular orientations is an essential step in manufacturing liquid crystal devices, such as liquid crystal displays where rod-shaped molecules need to be aligned in a uniform direction at substrate surfaces. Many emerging liquid crystal applications, such as flat optical elements, stimuli-responsive materials and devices rely on spatially varying molecular orientations. As a result, scalable manufacturing techniques for patterning molecular orientations are in high demand. Recently a projection photopatterning technique using specially designed photomasks made of nanometer-sized rectangular holes in aluminum films was shown capable of photo-aligning molecular orientations into complex patterns, promising scalable manufacturing of various liquid crystal devices. However, this kind of metallic photomask suffers from low efficiency in optical transmission, especially for ultra-violet light. This award supports fundamental research to develop high efficiency photomasks by using nanostructures of dielectric materials, and facilitates practical deployment of this photopatterning technique in liquid crystal device manufacturing. The project studies photo-patterning of complex structures with ordered molecular orientations using ultra-violet light and the dielectric metamasks. The research is interdisciplinary, involving photomask design, numerical simulations, liquid crystal materials and devices, nanomanufacturing and optical characterization. The PI will leverage the research to educate graduate and undergraduate students with multidisciplinary knowledge and skills, and to enhance diversity and STEM education by involving minority and high-school students.Plasmonic metamasks that can generate spatially-varying patterns of both light intensity and polarization direction have recently been suggested and utilized for photoaligning molecular orientations into complex spatially varying patterns. One issue with the plasmonic metamasks is that Ohmic losses in plasmonic materials make the optical transmission low. This project aims to eliminate this limit by developing dielectric metamasks. This research includes simulation, fabrication and characterization of dielectric metamasks with designable polarization patterns and high optical transmission in ultra-violet and near ultra-violet wavelength ranges; building of an optical photopatterning system; and designing, fabrication and characterization of Pancharatnam-Berry microlens arrays and mirrors as testbeds. The research advances basic understanding and new knowledge on designing dielectric metamasks and capabilities in scalable fabrication of liquid crystal devices such as geometric phase optical elements. Success of this project is expected to increase spatial resolution and throughput of the metamask-based photopatterning technique. The research outcomes should enrich the nanomanufacturing toolbox and facilitate practical applications of Pancharatnam-Berry flat optical elements.
控制分子取向是制造液晶器件(例如液晶显示器)的必要步骤,其中杆状分子需要在基板表面处沿均匀方向对准。许多新兴的液晶应用,如平面光学元件,刺激响应材料和设备依赖于空间变化的分子取向。因此,高度需要用于图案化分子取向的可缩放制造技术。最近的投影光刻技术,使用专门设计的光掩模制成的纳米尺寸的矩形孔在铝膜被证明能够光对准分子取向成复杂的图案,有希望的各种液晶器件的可扩展的制造。然而,这种金属光掩模的光学传输效率低,特别是对于紫外光。该奖项支持基础研究,通过使用介电材料的纳米结构开发高效率的光掩模,并促进在液晶器件制造中实际部署这种微图案化技术。该项目研究了利用紫外光和介电掩模对具有有序分子取向的复杂结构进行光图案化。该研究是跨学科的,涉及光掩模设计,数值模拟,液晶材料和器件,纳米制造和光学表征。PI将利用这项研究来教育研究生和本科生多学科的知识和技能,并通过让少数民族和高中生参与进来来加强多样性和STEM教育。最近提出了可以产生光强度和偏振方向的空间变化模式的等离子体元掩模,并用于将分子取向光对准成复杂的空间变化模式。等离子体超掩模的一个问题是等离子体材料中的欧姆损耗使得光透射低。该项目旨在通过开发介电元掩模来消除这一限制。本研究包括模拟,制造和表征的介电元掩模与可设计的偏振模式和高的光透射率在紫外和近紫外波长范围内;建立一个光学微图案化系统;和设计,制造和表征Pancharatnam-Berry微透镜阵列和反射镜作为测试平台。该研究推进了对设计介电元掩模的基本理解和新知识,以及可扩展制造液晶器件(如几何相位光学元件)的能力。该项目的成功预计将提高基于元掩模的微图案化技术的空间分辨率和吞吐量。研究成果将丰富纳米制造工具箱,促进Pancharatnam-Berry平板光学元件的实际应用。

项目成果

期刊论文数量(11)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Polar jets of swimming bacteria condensed by a patterned liquid crystal
  • DOI:
    10.1038/s41567-020-0793-0
  • 发表时间:
    2020-03-02
  • 期刊:
  • 影响因子:
    19.6
  • 作者:
    Turiv, Taras;Koizumi, Runa;Lavrentovich, Oleg D.
  • 通讯作者:
    Lavrentovich, Oleg D.
Control of microswimmers by spiral nematic vortices: Transition from individual to collective motion and contraction, expansion, and stable circulation of bacterial swirls
  • DOI:
    10.1103/physrevresearch.2.033060
  • 发表时间:
    2020-06
  • 期刊:
  • 影响因子:
    4.2
  • 作者:
    Runa Koizumi;T. Turiv;M. Genkin;R. J. Lastowski;Hao Yu;I. Chaganava;Q. Wei;I. Aranson;O. Lavrentovich
  • 通讯作者:
    Runa Koizumi;T. Turiv;M. Genkin;R. J. Lastowski;Hao Yu;I. Chaganava;Q. Wei;I. Aranson;O. Lavrentovich
Plasmonic Metasurfaces with High UV–Vis Transmittance for Photopatterning of Designer Molecular Orientations
  • DOI:
    10.1002/adom.201900117
  • 发表时间:
    2019-03
  • 期刊:
  • 影响因子:
    9
  • 作者:
    Hao Yu;Miao Jiang;Yubing Guo;T. Turiv;Wu Lu;V. Ray;O. Lavrentovich;Q. Wei
  • 通讯作者:
    Hao Yu;Miao Jiang;Yubing Guo;T. Turiv;Wu Lu;V. Ray;O. Lavrentovich;Q. Wei
Directional self-locomotion of active droplets enabled by nematic environment
  • DOI:
    10.1038/s41567-020-01055-5
  • 发表时间:
    2020-10-12
  • 期刊:
  • 影响因子:
    19.6
  • 作者:
    Rajabi, Mojtaba;Baza, Hend;Lavrentovich, Oleg D.
  • 通讯作者:
    Lavrentovich, Oleg D.
Liquid crystal Pancharatnam-Berry optical elements
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Oleg Lavrentovich其他文献

Oleg Lavrentovich的其他文献

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{{ truncateString('Oleg Lavrentovich', 18)}}的其他基金

Collaborative Research: Highly ordered concentric multilayer nanostructures with probable liquid crystalline features from rigid sphere-rod amphiphiles in solution
合作研究:溶液中刚性球棒两亲物具有可能液晶特征的高度有序同心多层纳米结构
  • 批准号:
    2215191
  • 财政年份:
    2022
  • 资助金额:
    $ 30万
  • 项目类别:
    Continuing Grant
Electro-optical phase retarders based on newly discovered nematics
基于新发现的向列相的电光相位延迟器
  • 批准号:
    2122399
  • 财政年份:
    2021
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
Collaborative Research: Morphogenesis of First-Order Phase Transitions in Polar and Apolar Nematic Liquid Crystals
合作研究:极性和非极性向列液晶中一级相变的形态发生
  • 批准号:
    2106675
  • 财政年份:
    2021
  • 资助金额:
    $ 30万
  • 项目类别:
    Continuing Grant
Active colloids with tunable interactions in liquid crystals
液晶中具有可调节相互作用的活性胶体
  • 批准号:
    1905053
  • 财政年份:
    2019
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
Electrically tunable cholesteric optical filters
电可调胆甾型滤光片
  • 批准号:
    1906104
  • 财政年份:
    2019
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
DMREF: Collaborative Research: Materials Engineering of Columnar and Living Liquid Crystals via Experimental Characterization, Mathematical Modeling, and Simulation
DMREF:协作研究:通过实验表征、数学建模和仿真进行柱状和活性液晶材料工程
  • 批准号:
    1729509
  • 财政年份:
    2017
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
PFI:AIR - TT: Ultra-fast electro-optical switching of nematic liquid crystals
PFI:AIR - TT:向列液晶的超快速电光开关
  • 批准号:
    1500204
  • 财政年份:
    2015
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
Electrokinetics in Liquid Crystals
液晶动电学
  • 批准号:
    1507637
  • 财政年份:
    2015
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
DMREF/Collaborative Research: Materials engineering of chromonic and colloidal liquid crystals via mathematical modeling and simulation
DMREF/合作研究:通过数学建模和模拟进行有色和胶体液晶的材料工程
  • 批准号:
    1434185
  • 财政年份:
    2014
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
Structure and Properties of the Twist-Bend Nematic Phase
扭转弯曲向列相的结构和性质
  • 批准号:
    1410378
  • 财政年份:
    2014
  • 资助金额:
    $ 30万
  • 项目类别:
    Continuing Grant

相似海外基金

SBIR Phase II: Next Generation High Performance EUV Photomasks.
SBIR 第二阶段:下一代高性能 EUV 光掩模。
  • 批准号:
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  • 财政年份:
    2019
  • 资助金额:
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  • 财政年份:
    2019
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SBIR 第一阶段:高保真 EUV 光掩模
  • 批准号:
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  • 财政年份:
    2018
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    2018
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    Discovery Grants Program - Individual
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  • 财政年份:
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数字成像仪增强和研究用于微光学制造的灰度光掩模技术
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使用灰度双金属光掩模创建微透镜
  • 批准号:
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  • 财政年份:
    2015
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Laser direct-write grayscale photomasks
激光直写灰度光掩模
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  • 资助金额:
    $ 30万
  • 项目类别:
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