NER: Combined UHV and Liquid Phase (CULP) Processing of Self-Assembled Nanostructures and Novel Interfaces

NER:自组装纳米结构和新型界面的特高压和液相(CULP)组合处理

基本信息

  • 批准号:
    0303833
  • 负责人:
  • 金额:
    $ 9.98万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2003
  • 资助国家:
    美国
  • 起止时间:
    2003-07-01 至 2005-06-30
  • 项目状态:
    已结题

项目摘要

This Nanoscale Exploratory Research (NER) proposal was submitted in response to the solicitation "Nanoscale Science and Engineering" (NSF 02-148). The project aims to advance fabrication technologies for self-assembled quantum dots and novel interfaces, and to broaden the scientific knowledge of kinetic processes involving nanoparticles. The approach utilizes an inert liquid as a medium to form clusters of metals, semiconductors, and insulators, and subsequently, the surface tension of the drying liquid for positioning self-assembled nano-particles with respect to an existing pattern on the substrate surface. By subjecting samples to pressures exceeding the triple-point pressure, in-situ in a small chamber, without crossing the solid-gas boundary on the phase diagram, the mixed solid film is expected to be converted to the liquid phase by adjusting its temperature. It is anticipated that the large diffusivity of atoms in the liquid phase will facilitate self-assembly of the dissolved species into particles with physical dimensions on the nanometer scale. After processing in the liquid phase, the thin films are either refrozen into the solid phase for subsequent drying to avoid surface tension effects, or dried in vacuum to allow the line tension of the liquid droplet to move, and possibly align the nano-particles with existing patterns on the substrate. The dependencies of the morphology and structure of self-assembled nanoparticles on the processing parameters will be studied by microscopic techniques, including AFM and TEM, the latter performed through collaboration with Lucent Technologies Bell Labs. The transport properties at the interfaces between the nano-particles and the substrate will also be characterized. %%% The project addresses basic exploratory research issues in a topical area of materials science and engineering with high technological relevance; it is considered a high risk/high pay-off activity. The project encompasses the NSE research and education theme of Nanoscale Structures, Novel Phenomena, and Quantum Control. An important feature of the program is the integration of research and education through the training of students in a technologically significant area. The basic concepts behind this project are fundamentally simple and may be readily understood by graduate, or undergraduate, students, who can then contribute significantly to the design of the experimental setup and procedures. A website dealing with the basic concepts is set-up and linked to an undergraduate physics course regularly accessed by students at Brooklyn College, which has a high minority enrollment. Parts of the proposed research are conducted at an industrial laboratory, giving students valuable exposure to an industrial research environment and personnel, and also opportunities for industrial scholars to share their experience and knowledge at Brooklyn College. Due to the interdisciplinary nature of the experiments, students will be encouraged to broaden their understanding by seeking guidance and help from experts in other areas. In addition, the PI participates in the Minority Access to Research Careers (MARC) program on campus, through which he is presently mentoring three minority students. Access/exposure to research activities in highly competitive areas such as nanotechnology will be very valuable for participants in this program. The project is jointly supported by the MPS/DMR/EM and the ENG/CTS/CRP-KCMP programs.***
本纳米探索性研究(NER)提案是应“纳米科学与工程”(NSF 02-148)的要求提交的。该项目旨在推进自组装量子点和新型界面的制造技术,并扩大涉及纳米颗粒的动力学过程的科学知识。该方法利用惰性液体作为介质以形成金属、半导体和绝缘体的簇,并且随后利用干燥液体的表面张力相对于衬底表面上的现有图案定位自组装纳米颗粒。通过使样品经受超过三相点压力的压力,在小腔室中原位,而不穿过相图上的固-气边界,期望通过调节其温度将混合固体膜转化为液相。预计液相中原子的大扩散率将促进溶解物质自组装成具有纳米尺度物理尺寸的颗粒。在液相中处理之后,将薄膜重新冷冻成固相以用于随后的干燥以避免表面张力效应,或者在真空中干燥以允许液滴的线张力移动,并且可能使纳米颗粒与基板上的现有图案对准。自组装纳米粒子的形态和结构对工艺参数的依赖性将通过显微技术进行研究,包括AFM和TEM,后者通过与朗讯技术贝尔实验室合作进行。还将表征纳米颗粒与基底之间界面处的输运性质。该项目解决了材料科学和工程领域的基本探索性研究问题,具有高技术相关性;它被认为是一项高风险/高回报的活动。该项目包括NSE研究和纳米结构,新现象和量子控制的教育主题。该计划的一个重要特点是通过在技术重要领域培训学生来整合研究和教育。这个项目背后的基本概念基本上是简单的,可以很容易地理解研究生,或本科生,学生,谁可以大大有助于实验装置和程序的设计。建立了一个处理基本概念的网站,并与布鲁克林学院的学生经常访问的本科物理课程相链接,该学院的少数民族入学率很高。部分拟议的研究在工业实验室进行,让学生有价值的接触工业研究环境和人员,也为工业学者分享他们的经验和知识的机会在布鲁克林学院。由于实验的跨学科性质,将鼓励学生通过寻求其他领域专家的指导和帮助来扩大他们的理解。此外,PI参加了少数民族进入校园研究职业(MARC)计划,通过该计划,他目前正在指导三名少数民族学生。访问/接触研究活动在高度竞争的领域,如纳米技术将是非常有价值的参与者在这个程序。该项目由MPS/DMR/EM和ENG/CTS/CRP-KCMP计划共同支持。*

项目成果

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Raymond Tung其他文献

Raymond Tung的其他文献

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{{ truncateString('Raymond Tung', 18)}}的其他基金

Systematic Atomic and Molecular Layer Control of Schottky Barrier Height
肖特基势垒高度的系统原子和分子层控制
  • 批准号:
    0706138
  • 财政年份:
    2007
  • 资助金额:
    $ 9.98万
  • 项目类别:
    Standard Grant

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