CAREER: Laser Direct Writing of Three-Dimensional Functional Nanostructures

职业：三维功能纳米结构的激光直写

• 批准号: 1846673
• 负责人: Heng Pan
• 金额: $ 50万
• 依托单位: Missouri University of Science and Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-06-01 至 2020-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1846673&HistoricalAwards=false
• 关键词: CAREER; Laser; Direct; Writing; Three

This Faculty Early Career Development (CAREER) Program grant supports fundamental research that enables a new process for high-throughput manufacturing of three-dimensional multi-material nanostructures. Over the past years, nanotechnology has given rise to many novel nanotechnology-enabled devices with unprecedented performance and properties, which promise to generate a wide variety of products to improve our daily lives. Many devices require multi-material integration of arbitrarily designed three-dimensional nanostructures over large areas. However, conventional nanomanufacturing tools for mass production are tailored for microprocessor manufacturing and are not suitable for emerging nanotechnology applications. This project supports fundamental investigations into enabling a new process for high-throughput nano-patterning of functional nanocrystals. Such a capability allows mass production of emerging nano-devices with enhanced mechanical, thermal, optical and electrical properties for energy, healthcare, communication and defense applications. A facile capability to generate three-dimensional multi-material nanostructures accelerates innovation, commercialization and adoption of nanotechnology-enabled products, which impacts U.S. manufacturing, economy and security. This research involves multiple disciplines including manufacturing, thermophysics, chemistry, optics and material science, and motivates individuals from diverse backgrounds and underrepresented groups to pursue careers in science and engineering. The project develops an integrated curriculum that bridges the gap between nanomanufacturing science and industrial practice and serves the needs of the current and future workforce in advanced manufacturing.Non-conventional patterning methods using nanocrystals as building blocks, such as nanoscale printing, assembly and direct writing, have many advantages in fabricating three-dimensional and multi-material nanostructures. However, high-throughput and cost-effective patterning of nanocrystals remains a major challenge. The objective of this CAREER project is to understand the nanoscale transport phenomena in laser-nanocrystal interactions and enable efficient, high-speed, scalable photo-patterning of nanocrystals. Specifically, a basic understanding of optical excitation, electron-vibration coupling, relaxation, and transformation processes that occur over a wide range of time scales from femtoseconds to nanoseconds in nano-confined systems is gained. Integrated numerical and experimental studies, including Ab-initio and Molecular Dynamics simulations, ultrafast optical probing and material characterizations are carried out to gain this understanding and establish the process-nanostructure-properties relationships. To demonstrate the scale-up capability and feasibility for targeted applications, parallel laser direct writing of functional nanostructures over large areas by scanning a massive array of beamlets at high speed are explored.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.

该学院早期职业发展（CAREER）计划资助支持基础研究，使三维多材料纳米结构的高通量制造新工艺成为可能。在过去的几年里，纳米技术已经产生了许多新的纳米技术支持的设备具有前所未有的性能和属性，这有望产生各种各样的产品，以改善我们的日常生活。许多器件需要在大面积上任意设计的三维纳米结构的多材料集成。然而，用于大规模生产的传统纳米制造工具是为微处理器制造量身定制的，并且不适合新兴的纳米技术应用。该项目支持基础研究，使功能纳米晶体的高通量纳米图案化的新工艺成为可能。这种能力允许大规模生产新兴的纳米器件，其具有增强的机械，热，光学和电学特性，用于能源，医疗保健，通信和国防应用。生成三维多材料纳米结构的简单能力加速了纳米技术产品的创新、商业化和采用，这将影响美国的制造业、经济和安全。这项研究涉及多个学科，包括制造，热物理，化学，光学和材料科学，并激励来自不同背景和代表性不足的群体的个人追求科学和工程事业。该项目开发了一个综合课程，弥合了纳米制造科学和工业实践之间的差距，并服务于当前和未来先进制造业劳动力的需求。使用纳米晶体作为构建块的非传统图案化方法，如纳米级印刷，组装和直接写入，在制造三维和多材料纳米结构方面具有许多优势。然而，纳米晶体的高通量和成本效益的图案化仍然是一个主要的挑战。这个CAREER项目的目标是了解激光-电子相互作用中的纳米级传输现象，并实现纳米晶体的高效，高速，可扩展的光图案化。具体而言，光学激发，电子振动耦合，弛豫和变换过程发生在很宽的时间尺度从飞秒到纳秒的纳米限制系统的基本理解。综合的数值和实验研究，包括从头算和分子动力学模拟，超快光学探测和材料表征进行，以获得这种理解，并建立工艺-纳米结构-性能的关系。为了展示针对性应用的规模扩大能力和可行性，探索了通过高速扫描大量细光束阵列在大面积上并行激光直写功能纳米结构的方法。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

Aerosol printing and flash sintering of conformal conductors on 3D nonplanar surfaces

• DOI: 10.1016/j.mfglet.2021.09.007
• 发表时间: 2021-09
• 期刊: Manufacturing Letters
• 影响因子: 3.9
• 作者: I-Meng Chen;Yangtao Liu;Xiaowei Yu;W. Everhart;Jonghyun Park;Yan Wang;H. Pan

Reconfigurable Multilevel Optical PUF by Spatiotemporally Programmed Crystallization of Supersaturated Solution

• DOI: 10.1002/adma.202212294
• 发表时间: 2023-04-19
• 期刊: ADVANCED MATERIALS
• 影响因子: 29.4
• 作者: Kim, Youngchan;Lim, Jaemook;Hong, Sukjoon
• 通讯作者: Hong, Sukjoon

Ultrafast, Non‐Equilibrium and Transient Heating and Sintering of Nanocrystals for Nanoscale Metal Printing

用于纳米级金属打印的纳米晶体的超快、非平衡和瞬时加热和烧结

• DOI: 10.1002/smll.202103436
• 发表时间: 2021
• 期刊: Small
• 影响因子: 13.3
• 作者: Podder, Chinmoy;Gong, Xiangtao;Pan, Heng
• 通讯作者: Pan, Heng

Additive Manufacturing of Sandwich–Structured Conductors for Applications in Flexible and Stretchable Electronics

• DOI: 10.1002/adem.202100286
• 发表时间: 2021-07
• 期刊: Advanced Engineering Materials
• 影响因子: 3.6
• 作者: Xiaowei Yu;Xiangtao Gong;Chinmoy Podder;B. Ludwig;I-Meng Chen;Wan Shou;Alexis Alvidrez;Genda Chen;Xian Huang;H. Pan