NER: Plasmon - Induced Magnetization of Metallic Nanostructures

这一提议是基于我们最近对纳米结构金属样品的等离子体感应磁性的实验观察。我们的磁力显微镜测量表明，非磁性金属薄膜中纳米孔阵列的磁化可以通过在与各种表面等离子激元激发相对应的波长上的结构照明来实现。这种二阶非线性光学效应似乎影响了光在金薄膜中通过纳米孔阵列的传播，这是在外部磁场的光谱测量中观察到的。这种效应可以在磁光数据存储、光通信和计算中找到许多应用。例如，纳米级金属样品中的光学控制磁化可以大大增加磁性数据记录的密度。另一方面，我们的观察结果表明，有可能在单光子水平上用外磁场控制纳米孔的传输。这种可能性在量子通信应用中极具吸引力。这两项发展都可能给各自的领域带来革命性的变化。我们已经组建了一个由固态物理学家（Smolyaninova）、扫描探针显微镜专家（Schaefer）和光学科学家（Smolyaninov）组成的多学科首席研究小组，以加强我们对这种新的磁光效应的理解，并探索其在磁光数据存储和光通信方面的潜在应用。我们计划通过精确的扫描探针显微纳米压痕技术，实现对纳米金属纳米结构形状的原位控制，从而控制其光谱特性。所提出的活动的智力价值是基于纳米科学和工程中的大量新思想和概念，例如纳米结构金属样品的等离子体诱导磁化，从而引入了新型光学控制的纳米级磁场源。这些最初的概念是最近由主要研究小组提出的。所提出的活动将促进对表面等离子体极化子的二维纳米光学的理解。同时，本研究结果可能开辟磁光数据存储的新途径。我们已经开发并将进一步开发的新成像和制造技术将不仅对这个项目有用，而且对电气和计算机工程、物理、材料、化学和生物化学等其他纳米科学项目也很有用。广泛影响：该研究计划将通过应用扫描探针显微镜为基础的纳米压痕技术，推动纳米制造技术的发展。它将促进对表面等离子体纳米光子学的理解，表面等离子体纳米光子学已成为光电子、纳米光刻和生物传感等不同领域的重要工具。它还将促进本科学生在材料科学、磁学、纳米光学和纳米科学与技术领域的教育和培训。私家侦探和合作私家侦探。这项提议的工作中有一个突出的记录，涉及本科生新颖的，可发表的研究项目。本科生，包括女性和少数民族学生，每学期都参与该小组的工作。本课程的特别优势在于其实验技术的广度，学生将在其中获得培训，包括光学仪器的设计和建造、纳米制造、显微镜（光学、扫描和透射电镜）和电子学。学生还将获得纳米结构理论建模的经验，包括电磁建模。本提案涉及以下研究主题：纳米级器件和系统架构。

This NER proposal is based on our recent experimental observation of plasmon-induced magnetism of nanostructured metallic samples. Our magnetic force microscopy measurements indicated that magnetization of an array of nanoholes in a non-magnetic metallic film can be achieved by illumination of the structure at the wavelengths corresponding to various surface plasmon excitations. This second-order nonlinear optical effect appears to affect propagation of light through an array of such nanoholes in a gold film as observed by spectroscopic measurements in external magnetic field. This effect can find numerous applications in magnetooptical data storage and optical communication and computing. For example, optically controlled magnetization in nanoscale metallic samples may considerably increase the density of magnetic data recording. On the other hand, our observations suggest the possibility to control transmission of nanoholes at a single-photon level with an external magnetic field. This possibility is extremely attractive in quantum communication applications. Both developments would potentially revolutionize their respective fields.We have formed a multidisciplinary team of Principal Investigators composed of a solid-state physicist (Smolyaninova), an expert in scanning probe microscopy (Schaefer), and an optical scientist (Smolyaninov) to enhance our understanding of this new magneto-optical effect and to explore its potential applications in magneto-optical data storage and optical communications. We are planning to achieve good in-situ control of the shape of nanofabricated metal nanostructures and, hence, their spectral properties by implementing precise scanning probe microscopy-based nanoindentation techniques. The intellectual merit of the proposed activity is based on large number of new ideas and concepts in nanoscience and engineering, such as plasmon-induced magnetization of nanostructured metallic samples that has let to introduction of novel optically controlled nanoscale-size sources of magnetic field. These original concepts have been introduced very recently by the team of principal investigators. The proposed activity will advance understanding of two-dimensional nanooptics of surface plasmon-polaritons. At the same time, the results of this research may open new ways of magneto-optical data storage. The new imagingand fabrication techniques we have developed, and will further develop, will be useful, not only for this project, but also for other nanoscience projects in electrical and computer engineering, Physics, Materials, and Chemistry and Biochemistry.Broad impact:This proposed research program will advance the state of the art in nanofabrication by application scanning-probe microscopy-based nanoindentation techniques. It will advance understanding of surface plasmon nanophotonics, which has become an essential tool in such diverse areas as optoelectronics, nanolithography, and biosensing. It will also advance education and training of undergraduate students in the areas of material science, magnetism, nanooptics, and Nanoscale science and technology. The P.I. and co-P.I.s of this proposed work have an outstanding record of involving undergraduate students in novel, publishable research projects. Undergraduates, including women and minority students, are involved with the work of the group every semester. particular strength of the proposed work is its breadth in terms of the range of experimental techniques in which students will obtain training, including optical instrumentation design and construction, nanofabrication, microscopy (optical, scanning, and TEM), and electronics. Students will also gain experience in theoretical modeling of nanostructures, including electromagnetic modeling.This proposal addresses the following research theme: Nanoscale Devices and System Architecture.