Upgrade to optical shearing system

升级至光学剪切系统

• 批准号: 345789-2007
• 负责人: Paulson, Allan
• 金额: $ 1.82万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=325598
• 关键词: Upgrade; optical; shearing; system

This application is for an upgrade to a Linkam CSS450 Optical Shearing System which was purchased with funds received in the 2000-01 Research Tools and Equipment Competition. The principal of operation is the imposition of shearing fields onto a liquid sample while viewing with a microscope. The system consists of a specialized microscope, video camera and image capture hardware and software, interfaced with a computer. It has been used extensively to study a range of colloidal suspensions under shear, including flocculent yeast suspensions, food polymers and other colloidal materials. However, the present system (which was state-of-the-art when purchased) is no longer suitable for the research programs of the applicants due to its limited capabilities with respect to temperature control, especially cooling to sub-zero temperatures, and inadequate image capture and data analysis capabilities. The requested upgrade includes: (a) a liquid-nitrogen cooling accessory for controlled cooling to sub-zero temperatures, (b) a high-speed digital camera for operation under low-light conditions, (c) a new data handling system (computer and software) capable of handling the large amounts of data produced, and (d) a non-cryo cooling bath for when liquid nitrogen cooling is not required. We are requesting an upgrade to the existing system because it costs about half as much as purchasing a new system, and the heart of the system, the shear cell, is fully functioning.

本申请是为一套Linkam CSS 450光学剪切系统进行升级，该系统是从2000-01年度研究工具和设备比赛中获得的资金购买的。操作原理是在用显微镜观察时将剪切场施加到液体样品上。该系统包括一个专门的显微镜，摄像机和图像采集硬件和软件，与计算机接口。它已被广泛用于研究剪切下的一系列胶体悬浮液，包括絮凝酵母悬浮液，食品聚合物和其他胶体材料。然而，本系统（其在购买时是最先进的）不再适合于申请人的研究计划，这是由于其在温度控制方面的有限能力，特别是冷却到零度以下的温度，以及不足的图像捕获和数据分析能力。请求的升级包括：（a）用于受控冷却至零度以下温度的液氮冷却附件，（B）用于在弱光条件下操作的高速数码相机，（c）能够处理所产生的大量数据的新的数据处理系统（计算机和软件），以及（d）用于不需要液氮冷却时的非低温冷却浴。我们要求对现有系统进行升级，因为它的成本大约是购买新系统的一半，而系统的核心，剪切单元，功能齐全。