Videos Extract Mechanical Properties of Liquid-Gel Interfaces
User rating: 4.5 / 5 after 2 vote(s)
Microscopic beads embedded in a gel surface were used to trace the motion of a gel forming an interface with a liquid. As the gel/liquid interface was stirred, the beads followed a complicated trajectory (patterns above photos), which the researchers broke down into a range of small, fast movements to large, slow movements in order to determine the gel's underlying mechanical properties. As the strength of the flow is increased (from left to right), the scale of the motion increases. Credit: NIST
Blood coursing through vessels, lubricated cartilage sliding against joints, ink jets splashing on paper—living and nonliving things abound with fluids meeting solids. However important these liquid/solid boundaries may be, conventional methods cannot measure basic mechanical properties of these interfaces in their natural environments. Now, researchers at the National Institute of Standards and Technology and the University of Minnesota have demonstrated a video method that eventually may be able to make measurements on these types of biological and industrial systems.
Full story »
|
Sep 05, 2008 | User rating: not rated yet As humans, we have a very intuitive concept of time, and of the differences between the past, present, and future. But, as scientists Edward Feng of the University of California, Berkeley, and Gavin Crooks of the Lawrence ...
|
|
|
Sep 05, 2008 | User rating: not rated yet After 20 years of construction, a machine that could either verify or nullify the prevailing theory of particle physics is about to begin its mission. CERN's epic Large Hadron Collider (LHC) project currently involves 25 ...
|
|
|
Sep 05, 2008 | User rating: not rated yet (PhysOrg.com) -- A new report published on Friday, 5 September, provides the most comprehensive evidence available to confirm that the Large Hadron Collider (LHC)'s switch-on, due on Wednesday next week, poses no threat to ...
|
|
Sep 04, 2008 | User rating: not rated yet Astronomical instruments needed to answer crucial questions, such as the search for Earth-like planets or the way the Universe expands, have come a step closer with the first demonstration at the telescope ...
|
|
Sep 04, 2008 | User rating: not rated yet Just as test pilots push planes to explore their limits, researchers at the National Institute of Standards and Technology are probing the newest microscope technology to further improve measurement accuracy ...
|
|
|
|
PhysOrg Forum
Video
Editorials
Free Magazines
Newsletter
Goto Archive
Suggest a story idea
Send feedback
