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.

1066877 PI：Cetinkaya处理大量微米级颗粒并在静电效应存在下以可控方式将大量颗粒沉积到基底上是各种行业（如印刷和复印、制药、食品加工、粉末冶金以及电子和半导体制造）中的关键通用工艺步骤。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变化。据推测，这种变化是由于单个颗粒表面上的不均匀电荷分布造成的。为了验证这一假设，并了解负责不均匀的电荷分布的基本机制，它是必要的第一步，以确定单个粒子的表面上的电荷分布。该项目将开发在受控条件下确定单个墨粉颗粒上的电荷分布的技术。滚动单个粒子所需的力将通过两种技术来确定：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。 在这项研究计划中产生的新知识将有助于设计和生产新型节能乳液聚集墨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利用该技术来降低成本、能源消耗和环境影响是该计划对整个社会的主要好处之一。与传统的粉状墨粉相比，乳液聚合技术可在每页打印中节省60-70%的能源。预计采用该技术将大幅减少墨粉材料的使用、墨粉废物和温室气体排放。该项目还包括一个强有力的教育部分。该计划将通过提供工业实习来加强克拉克森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在具有实际意义的基础研究问题上进行互动和合作。