Posted on 03/30/2006 11:50:15 AM PST by The_Victor
Scientists have found a molecule that can spin freely in liquid, clearing out water like a person swinging suitcases would clear a crowded room.
The molecule spins without causing friction [Video]. That shouldn't be possible, according to a chemical physics theory. The finding could alter the way scientists think about chemical reactions in liquids.
Researchers hit a drop of iodine cyanide and water with pulses from an ultraviolet laser, exciting one type of molecule to reconfigure into a small, peanut shape with a carbon atom on one end, a nitrogen atom on the other.
The molecule heated up to 8,000 degrees Fahrenheit (4,427 Celsius) and started spinning at a furious 270 trillion rotations per minute.
Outta my way
Within the first quarter-turn, the molecule created a shock wave that kicked away surrounding water molecules. The peanut molecule created a nearly frictionless zone for itself in the 10-trillionths of a second the reaction lasted.
"If you give it enough spin, it pushes all the guys around it away, and it builds itself a little bubble," said study coauthor Stephen Bradforth of the University of Southern California. "It's destroyed the friction in the liquid around it by completely reshaping its environment."
After the molecule completed about 10 rotations, the shock dwindled and the water molecules rushed back in.
Despite its fleeting nature, the reaction managed to smash the linear response theory, a chemistry model that states such a thing can't happen in a liquid environment.
"You can see molecules behave this way in gases, but not in liquids," said study coauthor Richard Stratt, a chemical theorist at Brown University.
Breaking other laws
The molecule's activity also runs against Newton's third law of motion, which states that for every action there is an equal, but opposite, reaction. In the new experiment, there water molecules are displaced, but they don't in turn do anything to the peanut molecule.
Friction is important in chemistry. Molecules rub, grind, and bang against each other they generate heat that speeds up reactions. Friction in gas reactions is reduced due to the relatively far distances between molecules, but the close proximity of molecules in liquid form makes friction nearly unavoidable.
Although the discovery has no immediate practical use, it changes the way scientists think about the 90 percent of all chemical reactions that take place in liquid, Bradforth said. One potential use could be to manipulate reactions by isolating molecules from their surroundings and reducing the production of useless byproducts.
"The main reason we're so excited by these results is that friction is how energy is shuttled around in chemical reactions," Stratt told LiveScience. "If it doesn't operate or it operates differently than we always thought, that makes us wonder if there are entirely new ways we ought to thinking about how chemical reactions take place."
The research is detailed in the March 31 issue of the journal Science.
What I really love about science is that it is so fluid - always changing.
Thanks for posting this. Just sent the link to my husband who's a high school science teacher. He and the others will be interested in this!
Physicists have been making it up as they go along for decades.
I want to see the stop watch that timed that little peanut !!!!
Its Bush's Fault!
They got that watch out of a box of crackerjacks...it was free too! Actually, they had to send in 25 Kool-Aid packages and three recappable tires and $2.95 for postage and handling to get their watch... :0 )
the atom should be punished, maybe even censured.
I could have done it with a magnetic field!
When Jack Bauer beat friction it went down and stayed down
Haha, stupid scientists wrong again! Obviously everything else they think is wrong too! Like evilution! /creationist mode
The molecule's activity also runs against Newton's third law of motion
Bogus.
This doesn't seem to make sense. The molecule is heated to 8,000F which is 7,788 degrees above the boiling point of water. Any water molecules that got close would be varporized. How come the shock wave is not due to water vapor?
Violate newton's third law(for every action there is an equal and opposite reaction)...oh really! What about the First Law of Thermodynamics(energy can never be created or destroyed, only transferred), you know, the LAW that liberals never understand? So all it seems we have here is the ENERGY of the UV ray being transferred to the "peanut" molecule in the form of rotation which then throws the water molecules outward like a shock wave. After the UV energy is spent they come rushing back in. Sounds more like dem spinmeisters, they only get away with it for a 10 trillionth of a second...
So, an odd shaped entity started rotating and pushed the water out of the way, by the time it turned 10 times (at a furious pace) the water bounced back.
How is this different than dropping a rock in a pond?
The only time I spun that fast was when a wasp got caught in my pants after swimming. I made spin dancing history that day!
Ping.
FUDD'S LAW: "If You Push Something Hard Enough, It Will fall over".
BRADFORTH'S CORROLLARY: "If you give it enough spin, it pushes all the guys around it away, and it builds itself a little bubble."
DCTDHMTP
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