MRI: Development of a Holographic Fabrication and Characterization Instrument for Materials Research and Educational Outreach

0922680 grier纽约U。“这项奖励是根据2009年美国复苏和再投资法案（公法111-5）资助的。”技术概述：本提案要求支持开发一种集成的全光学仪器，用于表征流体物体，如胶体颗粒、纳米线和生物细胞，并将它们组装成三维结构，用于材料科学和工程。该仪器基于在首席研究员实验室开发的两种互补技术：定量全息视频显微镜和动态全息捕获。前者可以在三维空间以纳米分辨率同时跟踪数百个运动物体，同时测量它们的尺寸和光学特性。后者可以独立捕获数百个微观物体，并将它们组织成任何指定的三维结构。总之，这些核心技术提供了对微观世界前所未有的控制。优化的光学和机械设计将使提议的仪器能够表征和处理对现有的概念验证仪器来说过于敏感或过于具有挑战性的材料。因此，它将立即应用于基于软物质的光子、电子和光学电子设备的快速原型制作，也将用于细菌生物膜的微力学分析。其易于访问的布局和预期的易用性也将促进物理和生物物理学基础研究的快速采用。拟议的仪器将由纽约大学开发和操作。它将成为纽约大学软物质研究中心的核心设施。最近成立了材料研究科学与工程中心。它的开放和模块化设计以及强大的计算机驱动界面将非常适合在定期安排的K-12课堂访问CSMR实验室期间进行实际演示，并将在纽约大学获奖的科学前沿教育推广计划中展出。非技术概述：将微观构建块组装成三维功能结构是材料科学的突出挑战之一。从化学合成混合物中挑选合适的物体，把它们放在一起，并验证结果几乎是不可能的。该仪器通过利用计算机生成的全息图施加的力来将微观流体物体排列成任何指定的三维结构，从而解决了组装问题。它补充了这种全息光学捕获能力与视频速率全息成像跟踪对象？在三维运动中同时测量其物理性质，从而解决了选择和验证问题。全息显微操作和全息表征使得从化学合成的成分中建立复杂的三维结构成为可能。直接的应用包括将光学活性胶体球组装成具有光学可切换光学特性的人造蛋白石，用化学生长的纳米线构建三维电路，以及用胶体成分制造微型激光器。同样的仪器也将用于研究细菌生物膜的微观力学特性。建议的文书是什么？其独特的能力组合将为纽约大学提供核心设施。最近被授予材料研究科学与工程中心。它也将成为纽约大学的中心议题。该项目每年为数百名纽约市K-12学童举办动手实验室之旅。仪器吗?S的开放式设计、实时视觉反馈和强大的计算机驱动界面将鼓励所有年龄段的学生深入微观世界并进行探索。

0922680GrierNew York U."This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."Technical Summary: This proposal requests support to develop an integrated all-optical instrument for characterizing fluid-borne objects such as colloidal particles, nanowires and biological cells, and for assembling them into three dimensional structures for applications in materials science and engineering. The instrument is based on two complementary techniques that were developed in the Principal Investigator's laboratory: quantitative holographic video microscopy, and dynamic holographic trapping. The former can track hundreds of moving objects simultaneously with nanometer resolution in three dimensions, while simultaneously measuring their dimensions and optical properties. The latter can trap hundreds of microscopic objects independently and organize them into any specified three-dimensional structure. Together, these core technologies provide unprecedented control over the microscopic world. Optimized optical and mechanical design will enable the proposed instrument to characterize and process materials that are too sensitive or too challenging for existing proof-of-concept instruments. Consequently, it will have immediate applications for rapid prototyping of soft-matter-based photonic, electronic and optical electronic devices, and also will be used for micromechanical assays of bacterial biofilms. Its accessible layout and anticipated ease of use also will facilitate rapid adoption for fundamental research in physics and biophysics. The proposed instrument will be developed and operated out of New York University?s Center for Soft Matter Research, and will serve as a core facility for NYU?s recently inaugurated Materials Research Science and Engineering Center. Its open and modular design and robust computer-driven interface will be ideal for hands-on demonstrations during regularly scheduled K-12 classroom visits to the CSMR laboratories, and will be featured in the award-winning Scientific Frontiers educational outreach program at NYU.Non-Technical Summary: Assembling microscopic building blocks into three-dimensional functional structures is one of the outstanding challenges of materials science. Picking the right objects out of chemically synthesized mixtures, putting them together, and verifying the outcome has been all but impossible. The proposed instrument addresses the assembly problem by using forces exerted by computer-generated holograms to arrange microscopic fluid-borne objects into any specified three-dimensional configuration. It complements this holographic optical trapping capability with video-rate holographic imaging to track the objects? motions in three dimensions and simultaneously to measure their physical properties, thereby solving the selection and verification problems. Together, holographic micromanipulation and holographic characterization make it possible to build up complex three-dimensional structures from chemically-synthesized components. Immediate applications include assembling optically active colloidal spheres into artificial opals with optically-switchable optical properties, building three-dimensional circuits out of chemically grown nanowires, and crafting microscopic lasers out of colloidal components. The same instrument also will used to study the micromechanical properties of bacterial biofilms. The proposed instrument?s unique combination of capabilities will provide a core facility for New York University?s recently awarded Materials Research Science and Engineering Center. It also will take center stage in NYU?s award-winning Scientific Frontiers Program, which annually hosts hands-on laboratory tours for hundreds of New York City K-12 schoolchildren. The instrument?s open design, real-time visual feedback and robust computer-driven interface will encourage students of all ages to reach into the microscopic world and explore.