论文标题
使用微延伸性休斯仪研究软和生活物质
Investigation of Soft and Living Matter using a Micro-Extensional Rheometer
论文作者
论文摘要
材料的流变特性通常需要在延伸变形下进行探测。例子包括纤维材料，例如蜘蛛丝，高分子重量聚合物融化以及活细胞的收缩反应。这样的材料具有强大的分子级各向异性，它是固有的，要么是由施加的延伸引起的。但是，与已建立良好的剪切流变性不同，目前正在开发进行扩展流变学的技术，并且经常针对正在研究的问题进行定制设置。在本文中，我们提出了一种多功能装置，可用于与同时成像的微观尺度上进行样品进行伸展变形研究。我们讨论了该设备的操作特征，并提供了许多应用程序。
Rheological properties of a material often require to be probed under extensional deformation. Examples include fibrous materials such as spider-silk, high-molecular weight polymer melts, and the contractile response of living cells. Such materials have strong molecular-level anisotropies which are either inherent or are induced by an imposed extension. However, unlike shear rheology, which is well-established, techniques to perform extensional rheology are currently under development and setups are often custom-designed for the problem under study. In this article, we present a versatile device that can be used to conduct extensional deformation studies of samples at microscopic scales with simultaneous imaging. We discuss the operational features of this device and present a number of applications.
