Tailoring the Nanophotonic and Nanoelectronic Properties of Nanometals using Oxide-Directed Syntheses

使用氧化物定向合成定制纳米金属的纳米光子和纳米电子特性

• 批准号: 2107728
• 负责人: Svetlana Neretina
• 金额: $ 45万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2107728&HistoricalAwards=false
• 关键词: Tailoring; Nanophotonic; Nanoelectronic; Properties; Nanometals

With the support of the Macromolecular, Supramolecular, and Nanochemistry Program in the Division of Chemistry, Dr. Svetlana Neretina of the University of Notre Dame will investigate how oxides can be used to control the growth of metal nanoparticles on substrates with spatial registration. Improvements in the understanding of metal nanoparticle growth mechanisms are expected to result in new synthetic strategies for nanostructure templating that could be exploited for applications in active plasmonics, nanoelectronics, and chiral plasmonics. Dr. Neretina is actively involved in the Building Bridges Mentoring Program and the Advancing Women Leaders Program as well several outreach initiatives that focus on the development of in-lab high school research projects. These activities open up opportunities for Dr. Neretina and her group to actively engage students in areas that are not typically covered in standard curricula.This research involves the advancement of a liquid-state seed-mediated chemistry for the syntheses of on-chip metal nanostructures that are responsive to the synthetic controls imposed by an impinging oxide. Oxides that steer horizontal Au nanowire growth trajectories along deterministic pathways that self-terminate upon an encounter with an electrode, confine plasmonic nanostructures within liquid-filled oxide capsules where their resulting mobility makes them responsive to externally applied stimuli, and selectively react in liquid media are exploited. This approach builds on traditional chemical controls that are accessible through colloidal syntheses and physical controls that are obtainable when a growing metal encounters a chemically inert oxide barrier that is firmly affixed to the substrate surface. By exploiting the synthetic inactivity and passive behavior of oxides to impose steric barriers that act in opposition to or frustrate the natural tendencies associated with nanometal syntheses, the research team seeks to produce reaction products that are typically unobtainable. The work will leverage existing capabilities stemming from a synthetic strategy in which seed-mediated colloidal growth modes are practiced on periodic arrays of substrate immobilized seeds. Overall, this research seeks to develop oxide-directed solution-based chemistry that targets the formation of organized surfaces of nanomaterials with tailored nanoelectronic and nanophotonic properties. Reduction to practice of such an approach to constructing organized surfaces with tailored properties would likely have broad scientific impact.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在化学系大分子，超分子和纳米化学项目的支持下，圣母大学的Svetlana Neretina博士将研究如何使用氧化物来控制金属纳米颗粒在空间配准基板上的生长。对金属纳米颗粒生长机制的理解的改进预计将导致用于纳米结构模板的新的合成策略，其可用于活性等离子体、纳米电子学和手性等离子体。Neretina博士积极参与了桥梁建设指导计划和促进妇女领导人计划，以及几项专注于实验室高中研究项目发展的外展计划。这些活动为Neretina博士和她的团队提供了机会，让学生积极参与标准课程通常不涉及的领域。这项研究涉及液态种子介导化学的进步，用于合成芯片上的金属纳米结构，这些纳米结构对撞击氧化物施加的合成控制做出反应。氧化物引导水平Au纳米线生长轨迹沿着确定性路径，所述确定性路径在遇到电极时自终止，将等离子体纳米结构限制在液体填充的氧化物胶囊内，其中它们的所得迁移率使它们响应于外部施加的刺激，并且选择性地在液体介质中反应。这种方法建立在传统的化学控制，可通过胶体合成和物理控制，可获得当生长的金属遇到化学惰性氧化物屏障，牢固地附着到基板表面。通过利用氧化物的合成惰性和被动行为来施加空间障碍，这些障碍与纳米金属合成相关的自然趋势相反或挫败，研究小组试图产生通常无法获得的反应产物。这项工作将利用合成策略产生的现有能力，其中种子介导的胶体生长模式在基质固定种子的周期性阵列上进行。 总的来说，这项研究旨在开发基于氧化物的溶液化学，其目标是形成具有定制的纳米电子和纳米光子特性的纳米材料的组织表面。 减少到实践中的这种方法来构建有组织的表面与定制的属性可能会有广泛的科学影响。这一奖项反映了NSF的法定使命，并已被认为是值得通过评估使用基金会的知识价值和更广泛的影响审查标准的支持。

项目成果

Large-area arrays of epitaxially aligned silver nanotriangles seeded by gold nanostructures

• DOI: 10.1039/d3qm01184d
• 发表时间: 2024-02-02
• 期刊: MATERIALS CHEMISTRY FRONTIERS
• 影响因子: 7
• 作者: Lawson，Zachary R.;Xu，Kaikui;Neretina，Svetlana
• 通讯作者: Neretina，Svetlana

Periodic arrays of structurally complex oxide nanoshells and their use as substrate-confined nanoreactors

结构复杂的氧化物纳米壳的周期性阵列及其作为基底限制纳米反应器的用途

• DOI: 10.1039/d3nr04345b
• 发表时间: 2023
• 期刊: Nanoscale
• 影响因子: 6.7
• 作者: Tuff, Walker J.;Hughes, Robert A.;Nieukirk, Brendan D.;Ciambriello, Luca;Neal, Robert D.;Golze, Spencer D.;Gavioli, Luca;Neretina, Svetlana
• 通讯作者: Neretina, Svetlana