CAREER: Laser-Induced Solvothermal Synthesis for the Direct-Write, Microscale Additive Processing of Metals and Oxides

职业：激光诱导溶剂热合成，用于金属和氧化物的直写、微尺度增材加工

• 批准号: 2046819
• 负责人: Lauren Zarzar
• 金额: $ 53.43万
• 依托单位: Pennsylvania State Univ University Park
• 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: 2021-06-01 至 2026-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2046819&HistoricalAwards=false
• 关键词: CAREER; Laser; Induced; Solvothermal; Synthesis

This Faculty Early Career Development (CAREER) project contributes to the development of manufacturing methods for microscale devices containing mixed material compositions. Additive manufacturing, which is the ability to 3D-print materials of arbitrary shape, is currently revolutionizing the way in which products are made. However, most additive manufacturing methods, especially for metals and oxide materials, are conducted on the millimeter scale or larger. Small length scales are important for products such as sensors, electronics, and medical diagnostic devices which are becoming miniaturized and portable. Further, most additive manufacturing methods are tailored for fabrication of parts containing a single material and are not well-suited for parts combining multiple different materials. This research initiative will explore the use of laser-based manufacturing to address such challenges. The ability to additively manufacture microscale parts with tailored composition will enable advances in areas such as healthcare, chemical and biomedical sensing, and energy storage. This research will use techniques from multiple different fields of study, including chemistry, materials science, optics, mechanics, and thermal modeling, to tackle the manufacturing challenges from a range of angles. Educational initiatives will be pursued, including outreach to diverse students at the K-12 level, summer camp development, and curriculum innovation at undergraduate and graduate levels. The educational outreach will focus on examining how light is used in manufacturing methods. In this research, the focal volume of a laser will be used as a high-temperature femtoliter-scale solvothermal reactor, wherein materials will be synthesized and deposited at the laser focus from fluid precursors. This method will exploit solution phase chemistry, but confine the synthesis to the microscale, thereby taking advantage of the three-dimensional control inherent in laser direct-write manufacturing. This method will be studied for processing a wide variety of inorganic materials directly from solution precursors, including metals, oxides, alloys, ceramics, and composites thereof. A key focus of the research will be on the manufacturing of high entropy oxides. Aims include synthesis of high entropy materials, characterization and modeling of the thermal reaction environment, exploration of effects of processing conditions such as laser power, scan parameters, and precursor chemistry, and investigation of parallelization and scalability for high-throughput fabrication. Educational initiatives will aim to draw connections between commonplace activities (e.g., photography) and light-enabled manufacturing methods (e.g., photolithography) such that students and the public will gain appreciation for the technological innovations that enable the fabrication of so many of the devices used in daily life.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）项目有助于开发包含混合材料成分的微型器件的制造方法。增材制造，即3d打印任意形状材料的能力，目前正在彻底改变产品的制造方式。然而，大多数增材制造方法，特别是金属和氧化物材料，都是在毫米或更大的尺度上进行的。小长度尺度对于传感器、电子产品和医疗诊断设备等产品非常重要，这些产品正变得小型化和便携化。此外，大多数增材制造方法都是为制造含有单一材料的零件而量身定制的，并不适合组合多种不同材料的零件。这项研究计划将探索使用激光制造来解决这些挑战。增材制造具有定制成分的微型部件的能力将推动医疗保健、化学和生物医学传感以及能源存储等领域的进步。这项研究将使用来自多个不同研究领域的技术，包括化学、材料科学、光学、力学和热建模，从一系列角度解决制造挑战。教育方面的举措将继续推进，包括在K-12阶段向不同的学生推广，夏令营的发展，以及本科和研究生阶段的课程创新。教育推广将集中在检查光如何在制造方法中使用。在本研究中，激光的焦点体积将被用作高温飞升规模的溶剂热反应器，其中流体前体将被合成并沉积在激光焦点处。该方法将利用液相化学，但将合成限制在微尺度，从而利用激光直写制造中固有的三维控制。该方法将用于直接从溶液前体加工各种无机材料，包括金属、氧化物、合金、陶瓷及其复合材料。研究的重点将放在高熵氧化物的制造上。目的包括高熵材料的合成，热反应环境的表征和建模，探索加工条件（如激光功率，扫描参数和前体化学）的影响，以及对高通量制造的并行化和可扩展性的研究。教育活动的目的是在日常活动（如摄影）和光制造方法（如光刻）之间建立联系，这样学生和公众就会对技术创新表示赞赏，这些技术创新使日常生活中使用的许多设备的制造成为可能。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识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

Direct Laser Writing of Multimetal Bifunctional Catalysts for Overall Water Splitting

• DOI: 10.1021/acsaem.2c03973
• 发表时间: 2023-03
• 期刊: ACS Applied Energy Materials
• 影响因子: 6.4
• 作者: Shannon McGee;Andres Fest;Cierra Chandler;N. Nova;Yu Lei;James M. Goff;S. Sinnott;I. Dabo;Mauricio Terrones;Lauren D. Zarzar

Direct Laser Writing of Microscale Metal Oxide Gas Sensors from Liquid Precursors

• DOI: 10.1021/acsami.2c03561
• 发表时间: 2022-06-22
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Castonguay, Alexander C.;Yi, Ning;Cheng, Huanyu
• 通讯作者: Cheng, Huanyu

Direct Laser Writing of Graphitic Carbon from Liquid Precursors

• DOI: 10.1021/acs.chemmater.2c00467
• 发表时间: 2022-05
• 期刊: Chemistry of Materials
• 影响因子: 8.6
• 作者: N. Nova;Lauren D. Zarzar

In situ laser-assisted synthesis and patterning of graphene foam composites as a flexible gas sensing platform.

• DOI: 10.1016/j.cej.2022.140956
• 发表时间: 2022-12
• 期刊: Chemical engineering journal
• 影响因子: 15.1
• 作者: Jiang Zhao;Ning Yi;Xiaohong Ding;Shangbin Liu;Jia Zhu;Alexander C. Castonguay;Yuyan Gao