CAREER: Directed Assembly of Nanoparticles; A Tool to Enable the Fabrication of Nanoparticle Based Devices

职业：纳米粒子的定向组装；

• 批准号: 0229087
• 负责人: Heiko Jacobs
• 金额: --
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-02-15 至 2010-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0229087&HistoricalAwards=false
• 关键词: CAREER; Directed; Assembly; Nanoparticles; Tool

Goals. The first research objective of this CAREER program is to develop a parallel tool to position nanoparticles and small components onto surfaces. The strategy that will be developed is based on directed self-assembly; it uses a patterned surface with areas (receptors) that interact with nanoparticle based device components. The interaction driving the assembly process is based on electrostatic forces. The central goal of the research is to demonstrate that nanotechnological devices can be assembled by the directed self-assembly of nanoparticle building blocks. As a first device example the research will focus on the fabrication of a vertical flow field effect transistor that uses a silicon nanoparticle as channel element. The specific CAREER objectives are:To develop a parallel tool that is based on directed self-assembly to position nanoparticles and small components on surfaces with sub 100 nm resolution. To study the key factors and ultimate resolution in theory and experiment.To apply the developed tool to fabricate nanotechnological devices in general and a vertical flow FET in particular.To foster a cross-disciplinary education and outreach to a broad community. Intellectual merits. Nanoparticles can provide a variety of functions and are considered as building blocks for future nanotechnological devices. Examples of such devices are single electron transistors, quantum-effect-based lasers, photonic bandgap materials, filters, and wave-guides. Device prototypes have been realized using random particle deposition and single particle manipulation. Such strategies are useful to fabricate and explore new device architectures; however, their lag in yield and speed will have to be overcome in the future. Fabrication strategies that are based on self-assembly and directed assembly may overcome these difficulties. This program will advance the knowledge in the area of directed self-assembly. The research will focus on electrostatic interactions because they are long-range and non-material specific (any particle can be trapped). The PI invented a parallel process to pattern charge at 100 nm resolution (published in Science 2001, see bibliography). In a preliminary experiment, these charge patterns allowed to direct the assembly of nanoparticles from the gas phase and liquid phase. These findings demonstrate that electrostatic forces resulting from surface charges or externally biased electrodes can be used to guide nanoparticles to specific locations on a substrate. The investigator believes that such an electrostatically-directed self-assembly, because it is based on long-range electrostatic interactions, will give a significant advantage over other strategies that use protein recognition, DNA hybridization, hydrophobicity/hydrophilicity, and magnetic interaction. The CAREER program lays down the ground work to accomplish the PI's long term research goal, which is to use a variety of different short range and long range interactions to direct the assembly of small components and nanoparticles to fabricate functional devices in two- and three dimensions. Broader impact. It is difficult to overstate the broader impact of the research component of this CAREER pogram, if it proves successful. For example, materials could be created as nanoparticles in the vapor or in solution, where they could be processed using well established methods. The ability to localize particles and small components of arbitrary materials on arbitrary substrates could allow the merging of technologies based on otherwise incompatible materials. Examples of applications include quantum electronic devices (addressed in this program), integrated circuits on plastics or fabrics for wearable intelligence, and merged optical/electronic structures for optical off-chip and cross-chip communication. Educational objectives. The educational objectives of the CAREER program focuses on creating awareness and transmitting excitement about the PI's research as well as exploratory, interdisciplinary research in general. It emphasizes on the importance of providing continuous opportunities for student involvement throughout their academic careers. Strongly influenced by the PI's educational experiences, the educational approach includes the following key points: 1) outreach to high school students and teachers, 2) undergraduate education, 3) undergraduate research, 4) graduate education, 5) graduate research, and 6) outreach to the general public.Societal implications. "Advances in nanoscience and nanotechnology promise to have major implications for health, wealth, and peace in the upcoming decades. Knowledge in this field is growing worldwide, leading to fundamental scientific advances. In turn, this will lead to dramatic changes in the ways that materials, devices, and systems are understood and create." - after Mihail C. Roco. This research is one element to advance knowledge. It suggests a dramatic change in the way that devices and systems are created.

目标.这个CAREER计划的第一个研究目标是开发一种并行工具，将纳米颗粒和小部件定位到表面上。将开发的策略基于定向自组装;它使用具有与基于纳米颗粒的设备组件相互作用的区域（受体）的图案化表面。驱动组装过程的相互作用是基于静电力。该研究的中心目标是证明纳米技术设备可以通过纳米颗粒构建块的定向自组装来组装。作为第一个器件示例，研究将集中于使用硅纳米颗粒作为沟道元件的垂直流场效应晶体管的制造。具体的职业目标是：开发一种基于定向自组装的并行工具，以将纳米颗粒和小部件定位在分辨率低于100 nm的表面上。在理论和实验中研究关键因素和最终解决方案。将开发的工具应用于制造一般纳米技术器件，特别是垂直流FET。促进跨学科教育和广泛的社区推广。智力上的优点。纳米颗粒可以提供多种功能，并被认为是未来纳米技术设备的构建模块。这种器件的例子是单电子晶体管、基于量子效应的激光器、光子带隙材料、滤波器和波导。使用随机粒子沉积和单粒子操作已经实现了器件原型。这种策略对于制造和探索新的器件架构是有用的;然而，它们在产量和速度上的滞后将在未来被克服。基于自组装和定向组装的制造策略可以克服这些困难。该计划将推进定向自组装领域的知识。研究将集中在静电相互作用，因为它们是长程和非材料特定的（任何粒子都可以被捕获）。PI发明了以100 nm分辨率图案化电荷的并行过程（发表在Science 2001上，参见参考文献）。在初步实验中，这些电荷模式允许引导来自气相和液相的纳米颗粒的组装。这些发现表明，由表面电荷或外部偏置电极产生的静电力可用于将纳米颗粒引导到基底上的特定位置。研究人员认为，这种静电导向的自组装，因为它是基于远程静电相互作用，将提供一个显着的优势，比其他策略，使用蛋白质识别，DNA杂交，疏水性/亲水性，和磁性相互作用。CAREER计划为实现PI的长期研究目标奠定了基础，该目标是使用各种不同的短程和长程相互作用来指导小组件和纳米颗粒的组装，以制造二维和三维的功能器件。更广泛的影响。这是很难夸大的研究组成部分的更广泛的影响，这一职业生涯pogram，如果它被证明是成功的。 例如，材料可以在蒸汽或溶液中作为纳米颗粒产生，在那里它们可以使用成熟的方法进行处理。将任意材料的颗粒和小组分定位在任意基底上的能力可以允许基于其他不兼容材料的技术的合并。应用的例子包括量子电子器件（在本计划中提到），用于可穿戴智能的塑料或织物上的集成电路，以及用于光学片外和跨芯片通信的合并光学/电子结构。教育目标。职业计划的教育目标侧重于创造意识和传播PI的研究以及探索性的跨学科研究的兴奋。它强调在整个学术生涯中为学生参与提供持续机会的重要性。受PI教育经验的影响，教育方法包括以下要点：1）面向高中生和教师的教育，2）本科教育，3）本科研究，4）研究生教育，5）研究生研究，6）面向公众的教育。社会意义“纳米科学和纳米技术的进步有望在未来几十年对健康、财富与和平产生重大影响。这一领域的知识在世界范围内不断增长，导致了基础科学的进步。反过来，这将导致材料、设备和系统的理解和创造方式发生巨大变化。"--以米哈伊尔·C.洛克这项研究是推进知识的一个要素。这意味着设备和系统的创建方式发生了巨大变化。