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.

这项教师早期职业发展（职业）计划赠款支持基础研究，该研究为三维多物质纳米结构的高通量制造提供了新的过程。在过去的几年中，纳米技术已经引起了许多具有前所未有的性能和特性的新型纳米技术设备，这有望生产各种产品，以改善我们的日常生活。许多设备需要在大面积上任意设计的三维纳米结构的多物质整合。但是，用于批量生产的常规纳米制造工具是针对微处理器制造量身定制的，不适合新兴的纳米技术应用。该项目支持为实现功能性纳米晶体的高通量纳米模式的新过程的基本研究。这样的能力允许使用增强的机械，热，光学和电气特性来生产新兴的纳米设备，以进行能源，医疗保健，通信和防御应用。产生三维多物质纳米结构的便利能力可加速纳米技术的创新，商业化和采用，从而影响美国的制造业，经济和安全。这项研究涉及多个学科，包括制造业，热物理学，化学，光学和材料科学，并激励来自不同背景和代表性群体不足的人从事科学和工程职业。该项目开发了一项集成的课程，该课程弥合了纳米制造科学与工业实践之间的差距，并满足了高级制造业中当前和未来的劳动力的需求。使用纳米晶体的非统一图案化方法，使用纳米晶体作为基础块，例如纳米级印刷，组装和指导，在纳米级印刷，组装和指导方面都有许多优势的三二维和指导。但是，纳米晶体的高通量和具有成本效益的图案仍然是一个主要挑战。该职业项目的目的是了解激光纳米晶体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，可扩展的照片。具体而言，获得了对光激发，电子振动耦合，放松和转化过程的基本理解，这些过程在纳米夹层系统中从飞秒到纳米秒的广泛时间尺度发生。进行了综合数值和实验研究，包括AB-INITIO和分子动力学模拟，超快的光学探测和材料表征，以获得此理解并建立过程 - 纳米结构 - 培训关系。为了证明针对目标应用的扩大能力和可行性，通过探索了高速扫描大量的Beamlet在大区域对功能性纳米结构的平行激光直接编写。该奖项反映了NSF的法定任务，并通过使用该基金会的知识分子优点和广泛的影响来评估NSF的法定任务，并被认为是值得的。

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