Engineering Research Equipment: Measurement of Colloid Forces in Vicinity of a Fluid Interface Using Atomic Force Microscopy

华盛顿大学化学工程系在此建议购买一台扫描探针显微镜设备，包括原子力显微镜的能力。它将主要用于直接测量颗粒和流体界面之间的胶体力，作为接近距离、颗粒和界面组成等的函数。这不是该仪器的常规应用，此类详细测量尚未在文献中报道。尽管如此，它们对提交人实验室正在进行的研究至关重要，包括浮选和油助团聚工艺，以成功回收碳粉打印纸和设计水性涂料。该设备还将用于新的研究，有助于从根本上了解“疏水相互作用”和胶体颗粒在流体表面内的相互作用。最后，该设施将在检验固体颗粒和延展表面的形态和成分方面得到详尽的使用，这不仅对提交人实验室的大部分工作至关重要，而且对提交人实验室的其他调查人员的工作，而且对提交人所在机构的其他调查人员的工作也是至关重要的。

ABSTRACT John C. Berg University of Washington CTS-9424438 The Department of Chemical Engineering at the University of Washington proposes herein in acquisition of a scanning probe microscopy facility, including the capability of atomic force microscopy (AFM). It would be used primarily for obtaining direct measurements of colloidal forces between particles and fluid interfaces as a function of the distance of approach, particle and interface composition, etc. This is not a routine application of the instrumentation, and detailed measurements of this kind have not yet been reported in the literature. They are nonetheless vital to ongoing investigations in the author's laboratory, including flotation and oil-assisted agglomeration processes for the successful recycling of toner-printed papers and the design of water-based coating. The facility would also be used in new investigations contributing to fundamental understanding of the "hydrophobic interaction" and the interaction of colloid particles within a fluid surface. Finally, the facility would find exhaustive use in the examination of solid particle and extended-surface morphology and composition, critical not only to much of the work in the author's laboratory, but also to the work of other investigators at the author's laboratory, but also to the work of other investigators at the author's institution.