Magnetically Actuated Active Tuning of Plasmonic Nanostructures

等离激元纳米结构的磁驱动主动调谐

• 批准号: 1308587
• 负责人: Yadong Yin
• 金额: $ 39万
• 依托单位: University of California-Riverside
• 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 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1308587&HistoricalAwards=false
• 关键词: Magnetically; Actuated; Active; Tuning; Plasmonic

In this project, funded by the Macromolecular, Supramolecular and Nanochemistry Program of the Chemistry Division, Prof. Yadong Yin of the University of California, Riverside, and his students incorporate magnetic actuation into noble metal nanostructures to achieve active tuning of plasmonic properties. A long-term goal of this research is the development of novel hybrid optical nanostructures with many technological applications in data storage, photonic devices, and chemical and biomedical sensors. The team studies two types of magnetic responsive plasmonic nanostructures: one involves magnetically induced assembly and disassembly of plasmonic nanoparticles and the other utilizes magnetic alignment of anisotropic noble metal nanostructures to achieve active tuning of the plasmonic properties. To enable reversible tuning of the plasmonic property, the surfaces of these metal nanoparticles are engineered to produce sufficiently repulsive interactions that can balance the magnetically induced attractive force and prevent permanent aggregation. New synthetic methods are developed to create many complex hybrid materials that are integrated with both magnetic and plasmonic properties, providing very useful tools for studying and controlling the plasmonic properties through the movement, rotation, and assembly of the metal nanoparticles.The resulting hybrid materials find great use in practical applications that may have very positive impacts on our society, including novel visual displays, optical sensors, anticounterfeiting devices, therapeutic agents for tumors, targeted drug delivery, and many enhanced sensing and imaging devices. The project also targets expanding research-based learning at UCR and in the wider community by engaging high school, undergraduate, and graduate students in research. Undergraduate students are attracted to the research program through regular academic and summer internship programs, student clubs and organizations, and collaborative programs with local small liberal arts colleges. Undergraduate and graduate students are provided with opportunities to present their discoveries in national meetings and other public settings. Students are also encouraged to report their research activities and findings in the form of video presentations that can be shared with their classmates, friends, family members, and others on their social networks, thus disseminating research outcomes from the laboratory to the general public. Prof. Yin is also deeply involved in science fair competition in order to promote high school students' interests in science and engineering.

在这项由化学系高分子、超分子和纳米化学计划资助的项目中，加州大学河滨分校的尹亚东教授和他的学生将磁驱动引入贵金属纳米结构中，以实现等离子体性质的主动调节。这项研究的一个长期目标是开发新型的混合光学纳米结构，在数据存储、光子器件、化学和生物医学传感器等方面具有许多技术应用。该团队研究了两种类型的磁响应性等离子体纳米结构：一种涉及等离子体纳米颗粒的磁感应组装和拆解，另一种是利用各向异性贵金属纳米结构的磁排列来实现等离子体性质的主动调节。为了实现等离子体性质的可逆调节，这些金属纳米颗粒的表面被设计成产生足够的排斥力，以平衡磁感应吸引力并防止永久聚集。人们开发了新的合成方法来合成许多具有磁性和等离子体性质的复杂杂化材料，通过金属纳米粒子的移动、旋转和组装为研究和控制等离子体性质提供了非常有用的工具。由此产生的杂化材料在实际应用中得到了巨大的应用，这些应用可能对我们的社会产生非常积极的影响，包括新型视觉显示器、光学传感器、防伪设备、肿瘤治疗剂、靶向药物输送以及许多增强的传感和成像设备。该项目还旨在通过让高中生、本科生和研究生参与研究来扩大UCR和更广泛的社区的研究性学习。通过定期的学术和暑期实习项目、学生俱乐部和组织，以及与当地小型文理学院的合作项目，本科生被吸引到研究项目中。本科生和研究生有机会在全国会议和其他公共场合展示他们的发现。还鼓励学生以视频演示的形式报告他们的研究活动和发现，可以在他们的社交网络上与他们的同学、朋友、家人和其他人分享，从而将实验室的研究成果传播给公众。殷教授还深入参与科学竞赛，以促进高中生对理工科的兴趣。