NDLI: Synchronized Heterogeneous Viscous Behavior of Soft Materials Upon Macroscopic Loading

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Gu, Wenting Shen, Jiayue Palmer, Xavier-Lewis Hao, Zhili
Copyright Year	2014
Abstract	This paper presents a preliminary study on characterizing the synchronized heterogeneous viscous behavior of soft materials upon macroscopic sinusoidal loading. Built upon a polymer-based microfluidic device capable of detecting distributed normal loads at a spatial resolution of 1.5mm, a rigid cylinder probe is employed to exert a macroscopic sinusoidal load on a sample placed on the device. Consequently, the synchronized heterogeneous viscous behavior of a sample translates to sinusoidal distributed loads, which are captured by the device. In a measurement, the input and output signals of a sample are the macroscopic sinusoidal load and the DC voltage outputs of the device, respectively, with the latter being representative of the sinusoidal deflections of a sample along its length. A preliminary data analysis is conducted on the recorded input and output signals to obtain their phase shifts at different frequencies, which are representative of the heterogeneous viscosity of a sample along its length. Several agar and polydimethylsiloxane (PDMS) samples and two animal cartilage tissue samples are prepared and measured. Variations among the measured phase shifts in a sample manifest its structural heterogeneity and demonstrate the feasibility of using the device to characterize the synchronized heterogeneous viscous behavior of soft materials upon macroscopic loading.
File Format	PDF
ISBN	9780791849590
DOI	10.1115/IMECE2014-37201
Volume Number	Volume 10: Micro- and Nano-Systems Engineering and Packaging
Conference Proceedings	ASME 2014 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2014-11-14
Publisher Place	Montreal, Quebec, Canada
Access Restriction	Subscribed
Subject Keyword	Viscosity Deflection Biological tissues Phase shift Plasma desorption mass spectrometry Agar Stress Cartilage Resolution (optics) Signals Polymers Probes Microfluidics Cylinders
Content Type	Text
Resource Type	Article

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