Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 33, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-648X/abc943
Keywords
extensional rheology; viscoelasticity of complex fluids; mechanics of biomaterials
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Funding
- Science and Engineering Research Board, Government of India [SB/S3/CE/071/2013]
- Ramanujan Fellowship, Department of Science and Technology, Government of India
- Department of Biotechnology, Government of India [BT/PR13244/GBD/27/245/2009]
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This article introduces a versatile device for conducting extensional deformation studies of samples at microscopic scales with simultaneous imaging. The operational features of this device are discussed, and several applications are presented.
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.
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