CAREER: Ordered Materials in Curved Spaces

职业：弯曲空间中的有序材料

• 批准号: 0847304
• 负责人: Alberto Fernandez-Nieves
• 金额: $ 50万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0847304&HistoricalAwards=false
• 关键词: CAREER; Ordered; Materials; Curved; Spaces

****NON-TECHNICAL ABSTRACT****This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Many natural and synthetic systems involve ordered arrangements of units on two-dimensional surfaces. Examples include viral protein capsids, fullerenes, membranes and colloidosomes, which are colloidal-particle arrangements on the surface of a spherical drop. This Faculty Early Career Award funds a project that will experimentally address the role played by both the characteristics of the underlying surface, which dictates certain broad features of the defect structure that can arise within the particular ordering, and the minimization of energy, which in the end controls the detailed structure of the ordered material. By developing new methodologies based on microfluidics to generate spherical and non-spherical closed surfaces, this project will address this interplay and unravel its consequences. Beside possible applications in biological systems, controlling the resultant defect structure can lead to functional particles, since the defects can be functionalized to provide directional bonding capabilities; as a result, colloidal superatoms might be designed with specific shapes and valency for use in building supermolecules and novel bulk materials. A strong effort will be focused on developing a substantial educational and outreach program synergistically with the research component of the project. For this, a new course to present recent fundamental advances in Soft Condensed Matter will be developed and offered to undergraduate and graduate students at GaTech. In addition, by involving the Fernbank Science Center in Atlanta, this project will enable the dissemination of the geometrical and physical aspects involved through outreach activities aimed at high school students and the general public; the experimental character of the project and the visual appeal of the expected results will serve to effectively communicate the otherwise abstract outcomes of the project. ****TECHNICAL ABSTRACT****This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Many natural and synthetic systems involve ordered arrangements of units on two-dimensional spaces. Examples include viral protein capsids, fullerenes, membranes and colloidosomes, which are colloidal-particle arrangements on the surface of a spherical drop. This Faculty Early Career Award funds a project that will experimentally address the role played by both the topology of the underlying surface and its detailed curvature. Topology dictates certain broad features of the topological-defect structure of the ground state, but the curvature-driven energetics controls the detailed structure of the ordered phase. By developing new methodologies based on microfluidic flows to generate closed surfaces with zero and non-zero genus, this project will address this interplay and unravel its consequences. Beside possible applications in biological systems, the experimental control and tunability of the resultant defect structure can lead to particles with a valency, since the defects can be functionalized to create ligands with directional bonding capabilities; as a result, mesoscale superatoms might be designed with specific shapes and valency for use as building blocks of supermolecules and novel bulk materials. A strong effort will be focused on developing a substantial educational and outreach program synergistically with the research component of the project. For this, a new course to present recent fundamental advances in Soft Condensed Matter will be developed and offered to undergraduate and graduate students at GaTech. In addition, by involving the Fernbank Science Center in Atlanta, this project will enable the dissemination of the geometrical and physical concepts involved through outreach activities aimed at high school students and the general public; the experimental character of the project and the visual appeal of the expected results will aid this goal.

**** 非技术性摘要 *** 该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。许多自然的和合成的系统涉及二维表面上的有序排列的单元。例子包括病毒蛋白衣壳、富勒烯、膜和胶体体，它们是球形液滴表面上的胶体颗粒排列。该学院早期职业奖资助了一个项目，该项目将通过实验解决底层表面的特性所起的作用，该特性决定了特定有序中可能出现的缺陷结构的某些广泛特征，以及能量的最小化，最终控制有序材料的详细结构。通过开发基于微流体的新方法来生成球形和非球形封闭表面，该项目将解决这种相互作用并揭示其后果。除了在生物系统中的可能应用之外，控制所得的缺陷结构可以产生功能性颗粒，因为缺陷可以被功能化以提供定向键合能力;因此，胶体超原子可以被设计为具有特定的形状和价态，用于构建超分子和新型块体材料。一个强有力的努力将集中在开发一个实质性的教育和推广计划协同与该项目的研究组成部分。为此，将开发一门新课程，介绍软凝聚态物质的最新基本进展，并提供给GaTech的本科生和研究生。此外，通过亚特兰大Fernbank科学中心的参与，该项目将通过针对高中生和公众的外展活动传播所涉及的几何和物理方面;该项目的实验性质和视觉吸引力预期结果将有助于有效地传达该项目原本抽象的结果。* 技术摘要 * 该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。许多自然和合成系统涉及二维空间上单元的有序排列。例子包括病毒蛋白衣壳、富勒烯、膜和胶体体，它们是球形液滴表面上的胶体颗粒排列。该学院早期职业奖资助了一个项目，该项目将通过实验解决底层表面的拓扑结构及其详细曲率所扮演的角色。拓扑决定了基态拓扑缺陷结构的某些广泛特征，但曲率驱动的能量控制了有序相的详细结构。通过开发基于微流体流动的新方法来生成具有零和非零属的封闭表面，该项目将解决这种相互作用并揭示其后果。除了在生物系统中的可能应用之外，所得缺陷结构的实验控制和可调谐性可以导致具有化合价的颗粒，因为缺陷可以被官能化以产生具有定向键合能力的配体;因此，介观尺度超原子可以被设计为具有特定形状和化合价，以用作超分子和新型块体材料的构建块。一个强有力的努力将集中在开发一个实质性的教育和推广计划协同与该项目的研究组成部分。为此，将开发一门新课程，介绍软凝聚态物质的最新基本进展，并提供给GaTech的本科生和研究生。此外，通过参与亚特兰大的Fernbank科学中心，该项目将能够通过针对高中学生和公众的推广活动传播所涉及的几何和物理概念;该项目的实验性质和预期结果的视觉吸引力将有助于实现这一目标。