NIRT: NANOJETS - Formation, Characterization and Applications

纳米尺度流体射流的理论理解和实验创造、表征和利用提出了重大的科学、工程和技术挑战。这些挑战源于与尺寸接近分子尺度的液体的物理性质有关的基本问题，以及与这种尺寸减小的液体射流的设计、创造和表征有关的问题。这个由佐治亚理工学院开发的跨学科项目联合了物理、电气与计算机工程和机械工程学院的研究人员，旨在开发、实施和应用理论和实验工具，以便进行系统的研究，以深入了解纳米射流形成的微观机制和控制其稳定性，以及导致纳米射流的设计、制造和应用。纳米喷射在未来的各种纳米级技术中的应用前景广阔，包括：表面图案化、电子电路印刷、涂层、纤维纺丝和跨膜不需要的注射。该计划将采用的理论技术包括基于计算机的大规模原子模拟，以及经过修改以包括大小相关波动的连续介质流体动力学建模，重点是开发可靠的预测能力方法。关键的材料问题以及悬而未决的制造和表征挑战，将通过开发和调整成像技术来解决，包括流动过程中纳米射流的电子显微镜和原子力显微镜成像，以及纳米印刷特征的沉积后分析，以及处于纳米工程和检测能力前沿的纳米结构制造技术和检测方法的应用。欲了解更多信息，请联系：佐治亚州亚特兰大理工学院物理学院尤兹·兰德曼教授，邮编：30332-0430电子邮件：uzi.landman@Physiics.gatech.edu(404-894-3368)该提案是为响应美国国家科学基金会02-148(纳米级跨学科研究团队)而提交的，并得到了化学和运输系统司的热传输和热处理计划以及流体动力学和液压计划的资助。

Theoretical understanding and experimental creation, characterization and utilization of fluid jets of nanoscale dimensions present significant scientific, engineering and technological challenges. These challenges originate from fundamental issues pertaining to the physical properties of liquids whose dimensions approach the molecular scale, as well as problems related to the design, creation and characterization of liquid jets with such reduced sizes. The interdisciplinary program developed at the Georgia Institute of Technology, that combines researchers from the schools of Physics, Electrical & Computer Engineering and Mechanical Engineering, aims at developing, implementing, and applying theoretical and experimental tools that will allow systematic investigations targeted at gaining deep insights into the microscopic mechanisms underlying the formation of nanojets and governing their stability, as well as leading to the design, fabrication and application of nanojets. Applications of nanojets are envisaged in diverse future nanoscale technologies, including: surface patterning, electronic circuit printing, coating, fiber spinning, and trans - membrane needless injections. The theoretical techniques that will be employed in this program include large-scale computer-based atomistic simulations, as well as continuum hydrodynamic modeling modified to include size-dependent fluctuations, with a focus on the development of reliable methodologies of predictive capabilities. The critical materials issues and outstanding fabrication and characterization challenges, will be addressed through the development and adaptation of imaging techniques, including electron microscopy and atomic-force-microscope imaging of nanojets during flow, as well as post-deposition analysis of nano-printed features and applications of nano-structural fabrication techniques and detection methods that are at the frontiers of nanoscale engineering and detection capabilities. For further information, please contact: Professor Uzi Landman, School of Physics, Georgia Institute of Technology, Atlanta, GA 30332-0430 e-mail: uzi.landman@physics.gatech.edu(404-894-3368) The proposal was submitted in response to NSF 02-148 (Nanoscale Interdisciplinary Research Teams) and has been funded by the Thermal Transport and Thermal Processing Program and the Fluid Dynamics and Hydraulics Program of the Chemical and Transport Systems Division.