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Latest Viscosity Stories

5d3f9321e5282d98169643d98af0ed1c1
2008-04-27 09:10:00

Let's do a little science experiment. If you have a can of whipped cream in the fridge, go get it out. Spray a generous dollop into a spoon and watch carefully. Notice anything interesting? The whipped cream just did something rather puzzling. First it flowed smoothly out of the nozzle like a liquid would, and then, a moment later, it perched rigidly in the spoon as if it were solid. What made it change? (While you're pondering this question, insert spoon into mouth, in the name of...

2007-07-17 06:03:43

By Otter, W K den Shkulipa, S A ABSTRACT The flow behavior of lipid bilayer membranes is characterized by a surface viscosity for in-plane shear deformations, and an intermonolayer friction coefficient for slip between the two leaflets of the bilayer. Both properties have been studied for a variety of coarse-grained double-tailed model lipids, using equilibrium and nonequilibrium molecular dynamics simulations. For lipids with two identical tails, the surface shear viscosity rises rapidly...

2006-12-12 03:00:27

By Fok, Wing Y; Hild, Debra N; Petrick, Lauren M; Obendorf, S Kay Abstract Spin finishes, including lubricants, emulsifiers, antistatic agents, and wetting agents are used to facilitate the manufacturing and processing of textiles. Autoxidation of ten spin finish components was studied by subjecting them to air and heat over time. Chemical changes were observed visually and evaluated using UV/Vis spectroscopy, viscosity measurements, and Fourier Transform infrared (FTIR) spectroscopy....

2006-01-13 05:40:00

LONDON -- Olive oil is becoming ever more popular in British kitchens, with more money spent on it than on all other types of cooking oils for the first time, a survey showed on Friday. Sales of olive oil have risen by almost 40 percent since 2000 to hit 104 million pounds, according to research by market analyst Mintel. Olive oil has overtaken other standard cooking oils, with a market share of 51 percent compared to 43 percent in 2000. "The fact that Brits now spend more on olive oil than...

ea76b473a7ef2a1eea277ad8643861091
2005-11-29 14:04:02

Magnetorheological (MR) fluids are smart materials whose flow/viscosity properties can be modified by applying an electric field. These changes in viscosity occur within a fraction of a millisecond "“ far faster than conventional mechanical means "“ and can be used to effectively control vibrations in applications dealing with actuation, damping, robotics and mechatronics. In this study published in AZojomo*, researchers Jorge A. Cort©s R., Leopoldo S....

2005-07-21 18:36:50

Physicists have created the state of matter thought to have filled the Universe just a few microseconds after the big bang and found it to be different from what they were expecting. Instead of a gas, it is more like a liquid. Understanding why it is a liquid should take physicists a step closer to explaining the earliest moments of our Universe. Not just any old liquid, either. Its collective movement is rather like the way a school of fish swims 'as one' and is a sign that the fluid...

82fb618b6131f46a28cdc45c34f5a8ee1
2005-03-22 00:50:00

Washington -- In three spatial dimensions, it is a close relative of the quark-gluon plasma, the super-hot state of matter that hasn't existed since the tiniest fraction of a second after the big bang that started the universe. When viewed in 10 dimensions, the minimum number prescribed by what physicists call "string theory," it is a black hole. No matter what you call it, though, that substance and others similar to it could be the most-perfect fluids in existence because they have...