Building reconfigurable photonic materials and devices by light-guided self-assembly of nanoparticles

通过纳米粒子的光导自组装构建可重构光子材料和器件

• 批准号: 2131079
• 负责人: Zijie Yan
• 金额: $ 45.78万
• 依托单位: University of North Carolina at Chapel Hill
• 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: 2021-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2131079&HistoricalAwards=false
• 关键词: Building; reconfigurable; photonic; materials; devices

Non-technical DescriptionAn attractive prospect of nanoscience is the ability to build novel electronic and photonic materials with nanoscale building blocks. Chemically synthesized nanoparticles with well-controlled size and shape allow one to tailor the properties of a material or structure. Being able to reassemble nanoparticles into new shapes will allow scientists and engineers to build multifunctional materials that can respond to stimuli. Reconfigurable assembly is common in living systems but still rare in artificial nanomaterials. For example, the lens of an eye changes to adjust focus or the iris contracts in the presence of bright light. However, current approaches for the assembly of nanoparticles mostly lead to structures with fixed size and shape. This project addresses this need by using light to assemble nanoparticles into reconfigurable shapes in a controlled manner. This will be achieved by shaping a laser beam into structured optical fields and studying interactions with nanoparticles. The research team will measure the optical, electronic, and mechanical properties of nanoparticle arrays, aiming to demonstrate new applications such as light-driven nanomotors and biosensors. The project will also enable a new remote-access education platform named “iPhotons”, an internet-accessible Platform for Holographic Optical Tweezers and Optical Nanomaterial Simulations. The iPhotons platform resembles the research system, so many techniques derived from the research activity can be transferred to this platform. Undergraduate and graduate researchers, especially those from underrepresented groups in STEM, are supported to develop the research techniques, build the iPhotons, and assist remote users. Therefore, the iPhotons benefits not only university researchers, but also K-12 students and the public through existing outreach programs. Together, this project advances fundamental sciences in materials and photonics, and promotes teaching, training, and learning to a wide range of people.Technical DescriptionThis project builds reconfigurable photonic materials and devices by light-guided assembly of colloidal nanoparticles, and further reveals their collective properties and potential applications. The research addresses a fundamental challenge in nanoscience, which is the reconfigurable self-assembly of nanoparticles into desired architectures in a controlled way. The research team uses the momentum of a laser beam to induce and control the electrodynamic interactions (i.e., optical binding) of nanoparticles. A combined experimental and computational approach is used to understand the nanoscale optical binding and realize reconfigurable light-guided assembly. First, the team investigates the influence of the size, shape, and material of nanoparticles to their optical binding interactions and self-assembly behaviors. Second, the team enables self-assembly of nanoparticles into reconfigurable assemblies (i.e., optical matter) with synergized intensity, phase, polarization, and wavelength of light. Advanced holographic beam shaping methods are used to sculpt the optical landscape of a laser field and control the assembly of nanoparticles. Third, the team measures the collective photonic properties of the optical matter, such as surface lattice resonances, second harmonic generation, and surface-enhanced Raman scattering. Lastly, the team demonstrates new applications of optical matter clusters as optomechanical nanomotors and biosensors. In sum, this project establishes a new technology for reconfigurable assembly of nanoparticles, enriches the photonic world of discrete plasmonic nanoparticle arrays, and enables reconfigurable optical matter as multifunctional photonic materials and devices.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.

非技术性描述纳米科学的一个诱人的前景是能够用纳米尺度的构建块来构建新型的电子和光子材料。具有良好控制尺寸和形状的化学合成纳米颗粒允许人们定制材料或结构的特性。能够将纳米粒子重新组装成新的形状将使科学家和工程师能够构建能够对刺激做出反应的多功能材料。 可重构组装在生命系统中很常见，但在人造纳米材料中仍然很少见。例如，眼睛的透镜改变以调整焦点，或者虹膜在强光下收缩。然而，目前用于组装纳米颗粒的方法大多导致具有固定尺寸和形状的结构。该项目通过使用光以可控的方式将纳米颗粒组装成可重构的形状来满足这一需求。这将通过将激光束成形为结构化的光场并研究与纳米颗粒的相互作用来实现。研究小组将测量纳米颗粒阵列的光学、电子和机械特性，旨在展示光驱动纳米电机和生物传感器等新应用。该项目还将启用一个名为“iPhotons”的新的远程访问教育平台，这是一个可通过互联网访问的全息光镊和光学纳米材料模拟平台。iPhotons平台类似于研究系统，因此许多来自研究活动的技术可以转移到这个平台上。本科生和研究生研究人员，特别是那些来自STEM中代表性不足的群体的研究人员，将得到支持，以开发研究技术，构建iPhotons，并协助远程用户。因此，iPhotons不仅使大学研究人员受益，还通过现有的推广计划使K-12学生和公众受益。本项目旨在推进材料学和光子学的基础科学，并促进教学、培训和学习。技术说明本项目通过光引导组装胶体纳米粒子构建可重构光子材料和器件，并进一步揭示其集体性质和潜在应用。这项研究解决了纳米科学的一个基本挑战，即以可控的方式将纳米粒子重新组装成所需的结构。研究小组利用激光束的动量来诱导和控制电动相互作用（即，光学结合）。结合实验和计算的方法是用来理解纳米光学绑定和实现可重构光导组件。首先，研究小组研究了纳米粒子的大小、形状和材料对其光学结合相互作用和自组装行为的影响。其次，该团队能够将纳米粒子自组装成可重构的组件（即，光学物质）具有协同的光的强度、相位、偏振和波长。先进的全息光束整形方法被用来塑造激光场的光学景观和控制纳米颗粒的组装。第三，研究小组测量了光学物质的集体光子特性，如表面晶格共振、二次谐波产生和表面增强拉曼散射。最后，该团队展示了光学物质簇作为光机械纳米马达和生物传感器的新应用。总而言之，该项目建立了纳米颗粒可重构组装的新技术，丰富了离散等离子体纳米颗粒阵列的光子世界，并使可重构光学物质成为多功能光子材料和器件。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Multifunctional Laser-Induced Bubble Microresonator for Upconversion Emission Enhancement

• DOI: 10.1021/acs.jpcc.3c00559
• 发表时间: 2023-04
• 期刊: The Journal of Physical Chemistry C
• 作者: M. Kataria;Catherine Currie Duncan;Bergen Polinko Murray;Manav Bindesh Parikh;Zijie Yan

Optical trapping and manipulation for single-particle spectroscopy and microscopy

• DOI: 10.1063/5.0086328
• 发表时间: 2022-08-07
• 期刊: JOURNAL OF CHEMICAL PHYSICS
• 影响因子: 4.4
• 作者: Chen, Zhenzhen;Cai, Zhewei;Yan, Zijie
• 通讯作者: Yan, Zijie