CAREER: Graded and Reliable Aerosol Deposition for Electronics (GRADE): Understanding Multi-Material Aerosol Jet Printing with In-Line Mixing

职业：电子产品的分级且可靠的气溶胶沉积 (GRADE)：了解通过在线混合进行多材料气溶胶喷射打印

• 批准号: 2336356
• 负责人: Ethan Secor
• 金额: $ 62.1万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-07-01 至 2029-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2336356&HistoricalAwards=false
• 关键词: CAREER; Graded; Reliable; Aerosol; Deposition

Computer-controlled printing technologies allow manufacturing of precise and complex parts. When these methods are used to print electronic materials, they can produce devices such as sensors and circuits. There is a strong motivation to print parts that contain gradients in material composition and properties, which can mimic biological materials, improve mechanical interfaces, and enable advanced electronic functionality. This Faculty Early Career Development Program (CAREER) award supports fundamental research to understand and control multi-material aerosol jet printing, a technology well suited for manufacturing such material gradients for electronic devices. This printing method can mix micro-scale droplets of different inks during the deposition process to change the material composition, and coordinate this material change with patterning in three dimensions. This technology is relevant to aerospace, biomedical, automotive, energy, and defense applications, thus promoting national prosperity and security. Moreover, the research pursues fundamental advances in manufacturing, aerosol and fluid dynamics, and materials science, thus advancing the progress of science. Alongside the core research objectives of this research, an outreach program will be established to engage 4th-5th grade students with science and engineering concepts via interactive digital printing activities, and game- and project-based learning will be incorporated in undergraduate manufacturing engineering coursework to improve workforce development. The goal of this project is to establish mechanistic knowledge and control of multi-material aerosol jet printing for patterning material gradients. Different materials will be mixed in the aerosol phase within the printhead, allowing digital control of the mixing ratio. Mixing mechanisms for the aerosol, liquid, and colloid phases will be evaluated to understand the effects of materials chemistry, ink formulation, aerosol physics, and print parameters on the mixing efficacy, uniformity, and control using a combination of experiments, simulation, and theory. The ability to fabricate custom gradients in material composition and properties will stimulate broad research of material-processing-structure-property relationships for functionally graded materials in the context of hybrid electronics, including electromagnetic devices, electrochemistry, interfacial mechanics, and biomimetic structures. To guide development of this capability, this project will pursue vertically graded interfaces to reduce failure from thermal expansion mismatch, along with laterally graded conductors to support biocompatible circuits.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.

计算机控制的印刷技术允许制造精确和复杂的零件。当这些方法用于打印电子材料时，它们可以生产传感器和电路等设备。在材料组成和特性中打印零件的零件有很大的动力，这些零件可以模仿生物材料，改善机械接口并启用高级电子功能。这项教师早期职业发展计划（职业）奖支持基础研究，以了解和控制多物质气溶胶喷气打印，这是一项非常适合为电子设备制造此类材料梯度的技术。这种打印方法可以在沉积过程中混合不同墨水的微尺度液滴，以更改材料组成，并将这种材料的变化与三个维度的图案进行协调。该技术与航空航天，生物医学，汽车，能源和国防应用有关，从而促进了国家的繁荣和安全。此外，该研究在制造，气溶胶和流体动力学以及材料科学方面取得了基本进步，从而进步了科学的进步。除了这项研究的核心研究目标外，还将建立一项外展计划，通过交互式数字印刷活动与4至5年级的学生与科学和工程概念相关，并且将在本科制造工程课程中纳入游戏和基于项目的学习，以改善劳动力发展。该项目的目的是建立用于模式材料梯度的多物质气溶胶喷气打印的机械知识和控制。在打印头内的气溶胶阶段将混合不同的材料，从而使混合比的数字控制。将评估气溶胶，液体和胶体相的混合机制，以了解材料化学，墨水配方，气溶胶物理学和打印参数对混合功效，均匀性和控制的影响，并使用实验，仿真和理论的组合。在材料组成和特性中构建自定义梯度的能力将刺激在混合电子设备中为功能分级材料的材料加工结构 - 培养基关系的广泛研究，包括电磁设备，电化学，界面机制和生物模拟结构。为了指导这种能力的开发，该项目将追求垂直分级的界面，以减少热扩展不匹配的失败，以及横向渐变的导体以支持生物相容性的电路。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力功能和更广泛的影响来评估的支持，并被认为是值得的。