CAREER: Engineering Surface Interactions to Modulate a Confined Fluid

职业:工程表面相互作用来调节密闭流体

基本信息

  • 批准号:
    0748094
  • 负责人:
  • 金额:
    $ 40万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2008
  • 资助国家:
    美国
  • 起止时间:
    2008-02-15 至 2014-01-31
  • 项目状态:
    已结题

项目摘要

The research objective of this Faculty Early Development (CAREER) program is to harness interfacial phenomena to achieve external, reversible, and local control of wetting and adhesion properties at the nanoscale. Strategies to create surface device elements by modulating a surface spatially (patterning) or dynamically (external stimulus) are developed and explored in fundamental experiments. To achieve the goals of this program, the surface force apparatus (SFA) will be employed as a testbed in concert with patterning, surface chemistry, and external fields. Specific aims of the proposed work are to (1) characterize the formation and stability of liquid bridges on surfaces patterned with stripes of alternating wetting properties in technologically relevant conditions and (2) create surface films that respond to electrical stimuli by changing conformation and altering wettability. The CAREER educational plan is designed to foster a true passion for science in students by giving them opportunities to actively produce scientific material. In the coursework developed, this takes the form of the traditional "see one, do one, teach one" framework, while exploiting the power and omnipresence of Wikipedia (www.wikipedia.org) to leverage students' efforts. In the lab, undergraduates are encouraged to present their findings within the group and externally. Finally, in cooperation with the National Federation of the Blind (NFB), workshops were created in the lab for visually impaired students for the NFB Youth Slam. The proposed research promises to have significant scientific and technological impact. Microfluidic devices have the potential to revolutionalize biological and chemical analysis due to fast reaction times, small volumes, and parallel operations. In addition to microfluidics applications, the area of optofluidics is emerging as a combination of MEMS, microfluidics and optics. To enable optofluidic devices to reach their full technological potential, however, the creation and implementation of new means of control and actuation that can operate at the nanoscale in confined fluid environments are needed. Key areas that must be addressed to control fluid in nanochannels are the actuation and control of flow, the means to manipulate the local refractive index, and the introduction of mechanical components. This program will test new strategies based on manipulating surface interactions to both control the optical properties and actuate mechanical components at the nanoscale. The proposed work will address fundamental issues particularly pertinent in the design of specific devices, but anticipated to affect this growing field at large.
该学院早期发展(CAEREAR)计划的研究目标是利用界面现象在纳米尺度上实现润湿和粘合性能的外部、可逆和局部控制。在基础实验中开发和探索了通过在空间上(图案化)或动态(外部刺激)调制表面来创建表面器件元件的策略。为了实现这一计划的目标,表面力装置(SFA)将被用作与图案化、表面化学和外场相结合的试验台。拟议工作的具体目标是(1)表征在技术相关条件下带有交替润湿性能条纹的表面上液桥的形成和稳定性,以及(2)通过改变构象和改变润湿性来创建响应于电刺激的表面膜。职业教育计划旨在通过让学生有机会积极制作科学材料来培养他们对科学的真正热情。在开发的课程中,这采取了传统的“看一看,做一,教一”框架的形式,同时利用维基百科(www.wikipedia.org)的力量和无处不在的能力来利用学生的努力。在实验室里,鼓励本科生在小组内和小组外展示他们的发现。最后,与全国盲人联合会(NFB)合作,在实验室为NFB青年大满贯项目的视障学生开设了讲习班。这项拟议的研究有望产生重大的科学和技术影响。由于反应时间快、体积小和并行操作,微流控设备有可能给生物和化学分析带来革命性的变化。除了微流控技术的应用外,微流控技术作为微电子机械系统、微流控技术和光学技术的结合体正在兴起。然而,为了使光流控设备能够充分发挥其技术潜力,需要创造和实施能够在受限流体环境中以纳米级操作的新的控制和驱动手段。为了控制纳米通道中的流体,必须解决的关键领域是流动的驱动和控制,操纵局部折射率的方法,以及机械部件的引入。该计划将测试基于操纵表面相互作用的新策略,以控制纳米级的光学特性和驱动机械部件。拟议的工作将解决与特定设备设计特别相关的基本问题,但预计将影响这一不断增长的领域。

项目成果

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Joelle Frechette其他文献

Criterion for particle rebound during wet collisions on elastic coatings
弹性涂层湿碰撞期间颗粒反弹的标准
  • DOI:
    10.1103/physrevfluids.4.084305
  • 发表时间:
    2019-08
  • 期刊:
  • 影响因子:
    2.7
  • 作者:
    Matthew Ryan Tan;Yumo Wang;Joelle Frechette
  • 通讯作者:
    Joelle Frechette

Joelle Frechette的其他文献

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{{ truncateString('Joelle Frechette', 18)}}的其他基金

NSF-DFG Confine: Structure, dynamics, and electrochemical stability of concentrated electrolytes in confined spaces
NSF-DFG Confine:受限空间中浓电解质的结构、动力学和电化学稳定性
  • 批准号:
    2223407
  • 财政年份:
    2022
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Collaborative Research: ISS: Microgravity enabled studies of particle adsorption dynamics at fluid interfaces
合作研究:国际空间站:微重力支持流体界面颗粒吸附动力学的研究
  • 批准号:
    2224412
  • 财政年份:
    2022
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Performance of Pressure Sensitive Adhesives on Soft and Slippery Materials
压敏粘合剂在软滑材料上的性能
  • 批准号:
    1728082
  • 财政年份:
    2017
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Nanomanufacturing of Hierarchical Colloidal Nanomaterials Using Multi-scale Interactions
利用多尺度相互作用进行多级胶体纳米材料的纳米制造
  • 批准号:
    1562579
  • 财政年份:
    2016
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
UNS: Design of stable spontaneous Pickering emulsions by modulating nanoparticles interactions
UNS:通过调节纳米颗粒相互作用设计稳定的自发皮克林乳液
  • 批准号:
    1510671
  • 财政年份:
    2015
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Manipulation of Elastic Deformation in Bio-inspired Wet Adhesion
仿生湿粘附中弹性变形的操纵
  • 批准号:
    1538003
  • 财政年份:
    2015
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant
Collaborative Research: Understanding the Effect of Transient Interfacial Dynamic in the Transport and Deposition of Particles in the Vadose Zone
合作研究:了解瞬态界面动力学对渗流区颗粒传输和沉积的影响
  • 批准号:
    1436482
  • 财政年份:
    2014
  • 资助金额:
    $ 40万
  • 项目类别:
    Standard Grant

相似国自然基金

Frontiers of Environmental Science & Engineering
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    51224004
  • 批准年份:
    2012
  • 资助金额:
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