KINETICS OF FLUCTUATIONS IN NANO-DEVICES

纳米器件波动动力学

• 批准号: 1306734
• 负责人: Alex Kamenev
• 金额: $ 30万
• 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: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1306734&HistoricalAwards=false
• 关键词: KINETICS; FLUCTUATIONS; NANO; DEVICES

TECHNICAL SUMMARYThis award supports theoretical research and education on the effect of nonequilibrium fluctuations on nanodevices. Recent advances in technology enable the controlled fabrication of nanostructured devices. A variety of novel nanodevices utilizing mechanical, electrical, magnetic, optical and other principals have been fabricated and studied. These devices have found a broad spectrum of applications and have stimulated fundamental questions. The nanodevices are driven far from equilibrium by applied currents, optical pulses or magnetic fields. As a result, their behavior is governed by strong nonequilibrium fluctuations. The main objective of this research is to elucidate the consequences of the nonequilibrium environment in nanodevices for dynamical bistability or quantum tunneling. The PI will combine developing novel theoretical methods and their application to engineered nanodevices. Collaboration with experimental groups from University of California at Irvine and University of Minnesota will provide testing grounds for theoretical predictions.Graduate and undergraduate students and postdocs involved in the research will learn modern computational and theoretical techniques. Collaboration with experimentalists will broaden students intellectually. Research results will be disseminated through scientific publications, conference proceedings, and presentations at national and international conferences. TECHNICAL SUMMARYThis award supports fundamental theoretical research and education on nanodevices that operate far from the steady state of equilibrium. Advances in nanotechnology have led to the fabrication and study of a variety of mechanical, electrical, magnetic, optical and other kinds of nanodevices. Operation of these ingenious machines is often based on principles fundamentally different from macroscopic devices. In many instances they are so small that thermal and possibly quantum mechanical fluctuations of their mechanical, magnetic degrees of freedom cannot be ignored. This requires development of a probabilistic description of device operation. In particular rare but large fluctuations may completely change the operation of a device. The PI will develop a new theoretical framework to describe the behavior of nanomachines and apply it to practical nanodevices. Graduate and undergraduate students and postdocs involved in the research will learn modern computational and theoretical techniques. Collaboration with experimentalists will broaden students intellectually. Research results will be disseminated through scientific publications, conference proceedings, and presentations at national and international conferences.

该奖项支持关于纳米器件非平衡波动影响的理论研究和教育。技术的最新进展使得能够控制纳米结构器件的制造。利用机械、电学、磁学、光学等原理，已经制造和研究了各种新颖的纳米器件。这些设备已经找到了广泛的应用，并激发了基本问题。纳米器件被施加的电流、光脉冲或磁场驱动远离平衡。 因此，它们的行为受到强烈的非平衡涨落的支配。本研究的主要目的是阐明纳米器件中的非平衡环境对动态双稳态或量子隧穿的影响。 PI将联合收割机开发新的理论方法和他们的应用工程纳米器件。与来自加州大学欧文分校和明尼苏达大学的实验小组的合作将为理论预测提供测试基础。参与研究的研究生和本科生以及博士后将学习现代计算和理论技术。与实验家合作将拓宽学生的知识面。研究成果将通过科学出版物、会议记录以及在国家和国际会议上的介绍进行传播。该奖项支持远离平衡稳态运行的纳米器件的基础理论研究和教育。纳米技术的进步导致了各种机械、电、磁、光和其他种类的纳米器件的制造和研究。这些精巧的机器的操作通常基于与宏观装置根本不同的原理。在许多情况下，它们是如此之小，以至于它们的机械、磁自由度的热波动和可能的量子力学波动不能被忽略。这需要开发设备操作的概率描述。特别是罕见但大的波动可能完全改变设备的操作。PI将开发一个新的理论框架来描述纳米机器的行为，并将其应用于实际的纳米器件。 参与研究的研究生和本科生以及博士后将学习现代计算和理论技术。与实验家合作将拓宽学生的知识面。研究成果将通过科学出版物、会议记录以及在国家和国际会议上的介绍进行传播。