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Videos extract mechanical properties of liquid-gel interfaces
Date:1/23/2008

noise produced a lot of motion at the fluid/gel interface. This motion provided so much useful information that the researchers could determine the gels mechanical propertiesnamely its viscoelasticityat the liquid/gel interface.

The encouraging results from this model system show that this new approach could potentially be applied to determining properties of many useful and important liquid/solid interfaces. The NIST/Minnesota approach has possible applications in areas as diverse as speech therapy where observing the flow of air over vocal cords could enable noninvasive measures of vocal tissue elasticity and help clinicians detect problems at an early stage. Also, this research may help clarify specific plastics manufacturing problems, such as shear banding, in which flow can separate a uniformly blended polymer undesirably into different components.


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Contact: Ben Stein
bstein@nist.gov
301-975-3097
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

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Videos extract mechanical properties of liquid-gel interfaces
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