NER: Manipulation and 3D Organization of Nanoparticles Using Dielectrophoresis

NER：使用介电泳对纳米颗粒进行操作和 3D 组织

• 批准号: 0210689
• 负责人: Paschalis Alexandridis
• 金额: $ 10万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0210689&HistoricalAwards=false
• 关键词: NER; Manipulation; 3D; Organization; Nanoparticles

This project was received in response to Nanoscale Science and Engineering initiative, NSF 01-157, category NER, and it addresses the manipulation and organization of nanoparticles. The organization of colloidal particles into one-, two- and three-dimensional ordered structures represents the first step towards the fabrication of a large number of miniaturized products of great technological importance. Structural attributes such as long-range order, high packing density, high surface-to-volume ratio, and reproducible shape and dimensions are highly desirable. Force microscopy and optical tweezers have been used for the manipulation of a small number of individual particles, while colloidal crystallization and templating have been used for particle organization; however, big challenges remain. Our goal is to develop a methodology that utilizes nonuniform electric fields (dielectrophoresis, DEP) to direct the organization of nanoparticles into well-defined two- and three-dimensional ordered structures (e.g., pyramids, parallelepipeds) with prescribed length scales and composition. Such methodology is scalable and readily automated, and would allow the manufacturing of functional materials with nanometer-scale order that can be used for their structural properties, e.g., photonic materials or high density data recording devices, and/or their structure, e.g., prefabricated blocks towards more complicated devices ("bottom up" strategy). We will follow a systematic approach, from 2D to 3D order and from microparticles to nanoparticles. This research is exploratory and high risk since forces developed during the organization process may nullify the DEP effect, and the dimensions of the electrodes required for the efficient organization of nanoparticles may be challenging to fabricate.This research should lead to significant advancements in the field of nanotechnology by the (a) fabrication of nanostructures having hierarchical-order using DEP, and (b) development of process design tools for efficient implementation of DEP in large-scale manufacturing. The graduate and undergraduate students who will be involved in the project will gain valuable experience, while industry (and the community) will benefit from the expertise on nanostructures and nanomanufacturing developed at the university through this research.

收到该项目是为了响应纳米级科学与工程倡议，NSF 01-157，类别NER，它解决了纳米颗粒的操纵和组织。将胶体颗粒组织成一，二维和三维有序结构是迈向制造大量技术重要性的小型化产品的第一步。结构性属性，例如远距离顺序，高堆积密度，高表面和体积比，以及可重复的形状和尺寸。力显微镜和光学镊子已用于操纵少量颗粒，而胶体结晶和模板已用于粒子组织。但是，仍然存在重大挑战。我们的目标是开发一种利用非均匀电场（介电性，DEP）的方法，将纳米颗粒的组织引导到定义明确的两维有序结构（例如，金字塔，并行牵引）的长度尺度和组成。这种方法是可扩展的且易于自动化的，可以允许使用纳米尺度订单的功能材料制造，可用于其结构属性，例如光子材料或高密度数据记录设备和/或它们的结构，例如，预制块朝向更复杂的设备（“自下而上”策略）。我们将遵循从2D到3D顺序以及从微粒到纳米颗粒的系统方法。这项研究具有探索性和高风险，因为在组织过程中发展的力可能会消除DEP的影响，并且有效组织纳米颗粒所需的电极的尺寸可能具有挑战性。 制造业。将参与该项目的研究生和本科生将获得宝贵的经验，而行业（和社区）将从大学通过这项研究在大学开发的纳米结构和纳米制造专业知识中受益。