NER: Plasmon - Induced Magnetization of Metallic Nanostructures

NER：等离子激元 - 金属纳米结构的诱导磁化

• 批准号: 0508275
• 负责人: David Schaefer
• 金额: --
• 依托单位: Towson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0508275&HistoricalAwards=false
• 关键词: NER; Plasmon; Induced; Magnetization; Metallic

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.

这NER建议是基于我们最近的实验观察等离子体诱导磁性的纳米结构的金属样品。我们的磁力显微镜测量表明，在非磁性金属膜中的纳米孔阵列的磁化可以通过在对应于各种表面等离子体激元激发的波长下照射结构来实现。这种二阶非线性光学效应似乎会影响光通过在金膜中的这种纳米孔阵列的传播，如通过在外部磁场中的光谱测量所观察到的。这种效应在磁光数据存储、光通信和计算中有着广泛的应用。例如，纳米级金属样品中的光学控制的磁化可以显著增加磁数据记录的密度。另一方面，我们的观察表明，在单光子水平与外部磁场控制纳米孔的传输的可能性。这种可能性在量子通信应用中极具吸引力。我们成立了一个多学科的首席研究员团队，由固态物理学家（Szaninova）、扫描探针显微镜专家（Schaefer）和光学科学家（Szaninov）组成，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。我们正计划实现良好的原位控制的纳米制造的金属纳米结构的形状，因此，他们的光谱特性，通过实施精确的扫描探针显微镜为基础的纳米压痕技术。拟议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激元诱导磁化，从而引入了新颖的光学控制纳米尺度尺寸的磁场源。这些最初的概念是由主要研究人员团队最近提出的。拟议的活动将促进了解二维纳米光学表面等离子体激元。同时，该研究成果可能为磁光数据存储开辟新的途径。新的imagingand制造技术，我们已经开发，并将进一步发展，将是有用的，不仅对这个项目，而且对其他nanoscience项目在电气和计算机工程，物理，材料，化学和Biochemistry.Broad impact：这个拟议中的研究计划将推进最先进的nanofabbits应用扫描探针显微镜为基础的纳米压痕技术。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学，纳米光刻和生物传感等不同领域的重要工具。它还将推进材料科学，磁学，纳米光学和纳米科学技术领域的本科生教育和培训。私家侦探这项工作的合作伙伴在让本科生参与新颖的、可持续的研究项目方面有着出色的记录。大学生，包括女生和少数民族学生，每学期都参与该小组的工作。 拟议的工作的特别优势是其在实验技术的范围方面的广度，学生将获得培训，包括光学仪器的设计和建设，纳米纤维，显微镜（光学，扫描和TEM），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。本计划涉及以下研究主题：纳米尺度器件和系统架构。