An international team led by researchers at The University of Texas at Dallas and Nankai University in China has discovered a new technology for refrigeration that is based on twisting and untwisting fibers.
In research published in the Oct. 11 issue of the journal Science , they demonstrated twist-based refrigeration using materials as diverse as natural rubber, ordinary fishing line and nickel titanium wire.
"Our group has demonstrated what we call 'twistocaloric cooling' by changing the twist in fibers. We call coolers that use twist changes for refrigeration 'twist fridges,'" said Dr. Ray Baughman, director of the Alan G. MacDiarmid NanoTech Institute at UT Dallas! Videos for Twist - based Refrigeration : Twisting And 16:05 Passion Twist Tutorial | Medium Size YouTube!! Baughman is a corresponding author of the study, along with Dr. Zunfeng Liu, a professor in the State Key Lab of Medicinal Chemical Biology in the College of Pharmacy at Nankai University in Tianjin.
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Torsional refrigeration by twisted, coiled, and supercoiled fibers | Science
Rubber bands that are stretched and held in an extended shape for a while will extract heat from their surroundings as they are allowed to relax, owing to a reversal of stress-induced crystallization, which is an exothermic process! 1:17 Yeh Hai Mohabbatein - 11th October 2019 | यह है मोहब्बतें | Latest Upcoming Twist | Star Plus Tv YouTube!! Wang et al. examine the potential for solid-state cooling of twisted fibers, along with configurations such as supercoiling, for materials including natural rubber, polyethylene, and nickel-titanium fibers! Twist-based refrigeration: Twisting and coiling ...www.reddit.com ...twistbased _ refrigeration _ twisting ...r/Futurology: Welcome to r/Futurology, a subreddit devoted to the field of Future(s) Studies and speculation about the development of humanity …!! The cooling is related to the change in entropy of the material as it is mechanically deformed.
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Higher-efficiency, lower-cost refrigeration is needed for both large- and small-scale cooling. Refrigerators using entropy changes during cycles of stretching or hydrostatic compression of a solid are possible alternatives to the vapor-compression fridges found in homes! Research shows that doing the twist is hot, unwinding is cool phys.org ...In research published in the Oct. 11 issue of the journal Science, they demonstrated twist-based refrigeration using materials as diverse as natural rubber , ordinary fishing line and nickel ...!! We show that high cooling results from twist changes for twisted, coiled, or supercoiled fibers, including those of natural rubber, nickel titanium, and polyethylene fishing line. Using opposite chiralities of twist and coiling produces supercoiled natural rubber fibers and coiled fishing line fibers that cool when stretched! Torsional refrigeration by twisted, coiled, and ...Twist-based cooling using single natural rubber fibers Vulcanized natural rubber (NR) fibers (18) (figs. S1 to S10) provide a prototypical twistocaloric material. Twisting these fibers causes coil...!! A demonstrated twist-based device for cooling flowing water provides high cooling energy and device efficiency. Mechanical calculations describe the axial and spring-index dependencies of twist-enhanced cooling and its origin in a phase transformation for polyethylene fibers.
Cannabis Meets Biochemistry and Neuroscience In Entrepreneurial Business | KPCW
Cool Science Radio welcomes guest Andrew Mack, the founder of OLO , a modern day cannabis company based in Richmond, California. Recreational marijuana isn't legal in the great state of Utah but we wanted to shine a light on OLO's unique scientific approach to cannabis products. To go beyond simple strains, OLO has assembled a team of biochemists, neuroscientists, psychologists, and cannabis experts to apply their expertise to develop, analyze and extensively test new products.
How to Cool a Planet With Extraterrestrial Dust - The New York Times
Extraterrestrial events — the collision of faraway black holes, a comet slamming into Jupiter — evoke wonder on Earth but rarely a sense of local urgency. By and large, what happens in outer space stays in outer space.
A study published Wednesday in Science Advances offered a compelling exception to that rule. A team of researchers led by Birger Schmitz, a nuclear physicist at Lund University in Sweden, found that a distant, ancient asteroid collision generated enough dust to cause an ice age long ago on Earth. The study lends new insight to ongoing efforts to address climate change.
Earth is frequently exposed to extraterrestrial matter; 40,000 tons of the stuff settle on the planet every year, enough to fill 1,000 tractor-trailers. But 466 million years ago, a 93-mile-wide asteroid collided with an unknown, fast-moving object between Mars and Jupiter. The crash increased the amount of dust arriving on Earth for the next two million years by a factor of 10,000. Dr. Schmitz, Dr. Heck and their team found that the dust triggered cooling in Earth's atmosphere that led to an ice age.
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A cool alternative to air conditioning | EurekAlert-- Science News
VIDEO: The team have manufactured a polymer film that could be used to cool buildings without using electricity. view more
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A low-cost passive cooling technology made from a polymer film could be used to passively cool buildings in metropolitan areas, avoiding the need for electricity.
Modern air conditioning systems consume significant amounts of energy to cool buildings during the daytime, generating significant amounts of greenhouse gases responsible for climate change. For example, air conditioning accounts for around 15 percent of total primary energy consumption in the United States and can be as high as 70 percent in extremely hot countries like Saudi Arabia.
Technologies that use radiative cooling to control the temperature of buildings, such as planar multilayered photonic films and hybrid metamaterial films, are attracting considerable attention because they do not use electricity; however, they are complicated and costly to manufacture.
Cool Jobs: Poop investigators | Science News for Students
Karen Chin studies fossilized feces to learn what dinosaurs ate and how they interacted with their environment.
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Introducing in fimo. This new scientific term describes experiments done on feces. The term, based on the Latin word fimus , meaning "dung," was introduced this past April in the journal Gastroenterology (GAS-troh-en-tur-OL-oh-gee).
Patricia Yang studies fluid mechanics — the science of moving fluids — in animals at the Georgia Institute of Technology in Atlanta. Coming from a family of scientists, "I knew what it was like to have a lab coat and work in a clean lab," she says. But she was looking for a different way to do science. The answer came on a trip to the zoo. She accompanied her advisor, who was studying how animals urinate. "I thought, 'This is a fluid mechanics problem that I can solve,' At the same time," she notes, "I saw animals pooping and thought there were probably some similarities there, as well."
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