GOALI: Mapping of Charge Distribution on a Non-Uniformly Changed Toner Particle for Determining Fundamental Contributors of Adhesion Force

目标：非均匀变化的墨粉颗粒上的电荷分布图，用于确定粘附力的基本贡献者

• 批准号: 1066877
• 负责人: Cetin Cetinkaya
• 金额: $ 30万
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1066877&HistoricalAwards=false
• 关键词: GOALI; Mapping; Charge; Distribution; Non

1066877PI: CetinkayaHandling micron-sized particles in bulk and depositing a large number of them onto a substrate in a controllable manner in the presence of electrostatic effects is a critical, general process step in various industries such as printing and copying, pharmaceutics, food processing, powder metallurgy and electronics and semiconductor manufacturing. Experiments show that there is considerable variation in particle-substrate adhesion force among particles prepared in an identical manner. It has been hypothesized that this variation results from non-uniform charge distribution on the surface of individual particles. To verify this hypothesis, and to understand the underlying mechanisms responsible for non-uniform charge distribution, it is necessary as a first step to determine charge distribution on the surface of individual particles. This project will develop techniques for determining charge distribution on individual toner particles under controlled conditions. Force required to roll a single particle will be determined by two techniques: one based on the Atomic Force Microscopy (AFM) and the other based on acoustics. The measured force will be used to estimate charge distribution under varying conditions. New knowledge generated in this research program will be useful in the design and production of novel classes of energy-efficient emulsion aggregation toner and associated powder handling/deposition systems. Reduction in cost, energy consumption and environmental impact through the utilization of this technology in toner design and development phases are among the chief benefits of the program to society at large. The emulsion aggregation technology offers 60-70% energy savings per printed page in comparison to the conventional pulverized toner. It is projected that its adoption will result in substantial reductions in toner material usage, toner waste and greenhouse gas emissions. This project also includes a strong education component. The program will enhance undergraduate and graduate curricula at Clarkson by providing industrial internships and will support a state-funded K-12 teacher summer training program for increasing nanotechnology awareness. Students and participating teachers will have opportunities to interact and work with researchers from Clarkson and Xerox in fundamental research problems of practical relevance.

1066877PI：Cetinkaya 在存在静电效应的情况下，批量处理微米级颗粒并以可控方式将大量颗粒沉积到基材上，这是印刷和复印、制药、食品加工等各个行业中关键的通用工艺步骤。粉末冶金及电子和半导体制造。实验表明，以相同方式制备的颗粒之间的颗粒-基底粘附力存在相当大的差异。据推测，这种变化是由于单个颗粒表面的电荷分布不均匀造成的。为了验证这一假设，并了解造成不均匀电荷分布的根本机制，有必要首先确定单个颗粒表面的电荷分布。该项目将开发在受控条件下确定单个墨粉颗粒上电荷分布的技术。滚动单个粒子所需的力将通过两种技术确定：一种基于原子力显微镜（AFM），另一种基于声学。测得的力将用于估计不同条件下的电荷分布。 该研究项目中产生的新知识将有助于设计和生产新型节能乳液聚集碳粉和相关的粉末处理/沉积系统。通过在墨粉设计和开发阶段使用该技术来降低成本、能源消耗和环境影响，是该计划为整个社会带来的主要好处之一。与传统的粉状碳粉相比，乳液聚合技术每打印一页可节省 60-70% 的能源。预计该技术的采用将大幅减少碳粉材料的使用、碳粉浪费和温室气体排放。该项目还包括强大的教育成分。该计划将通过提供工业实习来加强克拉克森大学的本科生和研究生课程，并将支持国家资助的 K-12 教师暑期培训计划，以提高纳米技术意识。学生和参与教师将有机会与克拉克森和施乐的研究人员就实际相关的基础研究问题进行互动和合作。