Flexible Nonlinear Plasmonic Metasurfaces with Multiresonant Composite Enhancement

具有多谐振复合增强功能的柔性非线性等离激元超表面

• 批准号: 2139317
• 负责人: Wei Zhou
• 金额: $ 30.01万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2025-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2139317&HistoricalAwards=false
• 关键词: Flexible; Nonlinear; Plasmonic; Metasurfaces; Multiresonant

Non-technical Description: Plasmonic metasurfaces are two-dimensional nanoantenna arrays that can control the propagation of light. They are ultrathin, easy to fabricate and feature superior nonlinear optical properties compared with bulky materials. For example, such nanomaterials can be used convert coherent light from one color to another. This process is important for emerging applications in quantum communications, computing, and sensing. This project focuses on the design, fabrication, and characterization of plasmonic metasurfaces that can concentrate light over a broad color range and efficiently convert coherent light between different colors. The PI will also develop a scalable, low-cost approach to create flexible ultrathin nanomaterials with a biocompatible microporous structure for biosensing and imaging. The project will advance STEM education through an engaging undergraduate photonics course that connects photonics and nanotechnology to real-world applications. The PI will promote educational diversity by actively participating in local K-12 STEM events and recruit underrepresented students to the research team. The scientific outcomes of this project will be disseminated to a broad audience through creative exhibits in the science festival and outreach activities for K-12 students.Technical Description: Simultaneous nanolocalized enhancement of excitation and emission transitions in nonlinear processes remains a challenge in nanophotonics research but can offer many applications in coherent light conversion, imaging, sensing, quantum optics, and spectroscopy. To address this challenge, the research team proposes to develop a new type of ultrathin nonlinear plasmonic metasurfaces, consisting of periodic metal-dielectric nanoantenna nanomaterials, to enhance nonlinear coherent light conversion processes, including second harmonic generation (SHG) and third harmonic generation (THG). The research objectives include: (1) Elucidating the structure-property relationships in engineering multiresonant optical properties of nonlinear plasmonic metasurfaces; (2) Determining SHG and THG responses from nonlinear plasmonic metasurfaces with multiresonant composite enhancement; (3) Developing a scalable, low-cost nanofabrication approach to integrating ultrathin nonlinear plasmonic metasurfaces with biocompatible flexible polymeric meshes. This research can advance fundamental knowledge in nonlinear nanophotonics by revealing the relationship between geometry-material-resonance characteristics in plasmonic metasurfaces and their nonlinear light conversion performance. This project can generate practical insights into rational design and scalable nanofabrication methods to create flexible plasmonic metasurface meshes for bio-interfaced nonlinear optical sensing and imaging applications.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.

非技术描述：等离子体跨面是可以控制光传播的二维纳米annoantenna阵列。与笨重的材料相比，它们是超薄的，易于制造的，具有出色的非线性光学特性。例如，可以使用这种纳米材料将相干的光从一种颜色转换为另一种颜色。此过程对于量子通信，计算和传感中的新兴应用很重要。该项目着重于等离子元面的设计，制造和表征，该等离子可以将光集中在广泛的颜色范围上，并有效地在不同颜色之间有效转换相干的光。 PI还将开发一种可扩展的低成本方法，以创建具有生物相容性的微孔结构的柔性超薄纳米材料，用于生物传感和成像。该项目将通过将光子学和纳米技术连接到现实世界应用的引人入胜的大学光子学课程来推进STEM教育。 PI将通过积极参加本地K-12 STEM事件来促进教育多样性，并招募代表性不足的学生加入研究团队。该项目的科学成果将通过科学节和K-12学生的宣传活动中的创造性展览来传播到广泛的受众群体。技术描述：同时在非线性过程中，非线性过程中的激发和发射过渡的增强仍然是纳米动物学研究中的挑战，但在纳米动物学研究中仍然可以提供许多相关的照明，量子，量身定量，量身定量。为了应对这一挑战，研究小组建议开发一种新型的超薄非线性等离子式跨曲面，由周期性的金属二型纳米纳米纳米材料组成，以增强非线性相干光转换过程，包括第二次谐波生成（SHG）和第三次和谐波（THG）（THG）。研究目标包括：（1）阐明非线性等离子体元素的工程多辅助光学特性中的结构质质关系； （2）确定具有多辅助复合材料增强的非线性等离子体跨面的SHG和THG响应； （3）开发一种可扩展的低成本纳米化方法，以将超薄非线性等离激元元面积与生物相容性柔性聚合物网格整合在一起。这项研究可以通过揭示等离激元跨面中的几何形式 - 材料谐振特性与其非线性光转换性能之间的关系，从而促进非线性纳米素化学的基本知识。该项目可以为合理设计和可扩展的纳米制作方法提供实用的见解，以创建灵活的等离激元跨表面网格，以用于生物交织的非线性光学传感和成像应用。该奖项反映了NSF的法定任务，并认为通过基金会的知识优点和广泛的crietia crietia criteria criperia criperia criperia criperia criperia criperia criperia criperia criperia criperia criperia criperia recectia recectia recectia rection the Apportiation奖。