Nano Optical Conveyor Belt

纳米光学传送带

• 批准号: 1028372
• 负责人: Lambertus Hesselink
• 金额: $ 36万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1028372&HistoricalAwards=false
• 关键词: Nano; Optical; Conveyor; Belt

ObjectiveThe objective of this research is to demonstrate a working prototype of a nano-optical conveyor belt for transport of ~100 nm nanoparticles over millimeter distances. Engineered metallic nanostructures support intense near fields that can trap truly nanoscopic objects such as viruses and single molecules. Numerical calculations indicate that a chain of alternating size C-shaped apertures, irradiated in turn by three wavelengths, can peristaltically transport nanoparticles along its length using substantially less power than is required for conventional optical trapping. Work will be guided by electromagnetic, diffusion and fluidic simulations. Relative merits of candidate nanostructures will be determined through numerical and laboratory experiments with nanospheres.Intellectual MeritThe competing effects of Brownian motion, refractive momentum transfer and radiation pressure, convection currents and thermophoresis have not been studied in conjunction with asymmetrical plasmonic structures as will be required for this work. This work opens new theoretical and experimental territory in optics and supports a new generation of massively parallel biomolecule research.Broader ImpactsThe nano optical conveyor belt is an enabling technology for macromolecular manipulation and lab-on-a-chip devices. A device which can identify single molecules must have a mechanism for drawing in and holding the molecule, and as such this work is a "glue technology" for fundamental biomolecular research. Compact pathogen detection systems enabled by such nano-manipulation tools are increasingly important for homeland security. This project will incorporate high school and undergraduate research assistants, and be integrated into our remote laboratory framework to reach students worldwide.

这项研究的目的是展示一个纳米光学传送带的工作原型，用于在毫米距离内运输~100 nm的纳米颗粒。 工程金属纳米结构支持强烈的近场，可以捕获真正的纳米级物体，如病毒和单分子。 数值计算表明，一系列交替大小的C形孔，依次由三个波长照射，可以使用比传统光学捕获所需的功率少得多的功率沿其长度沿着纵向传输纳米颗粒。 工作将由电磁，扩散和流体模拟指导。 候选纳米结构的相对优点将通过数值和实验室nanosephers.Intellectual MeritThe布朗运动，折射动量转移和辐射压力，对流和热泳的竞争效应的实验室实验来确定结合不对称等离子体结构，将需要这项工作。 这项工作开辟了新的理论和实验领域的光学和支持新一代的大规模并行生物分子的研究。更广泛的影响纳米光学传送带是一个使技术的大分子操纵和实验室上的芯片设备。 一个能够识别单个分子的装置必须有一个吸引和固定分子的机制，因此这项工作是基础生物分子研究的“胶水技术”。 由这种纳米操纵工具实现的紧凑型病原体检测系统对国土安全越来越重要。 该项目将包括高中和本科研究助理，并被集成到我们的远程实验室框架，以达到世界各地的学生。