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These Materials Can’t Be Stretched Thin

Imagine a rubber band that grows fatter when stretched and thinner when released. Such materials, called auxetics, actually exist, but scientists haven’t totally figured out how they work. A new mathematical model may help. Researchers say the model can accurately predict the properties of these materials, opening the way for … More

 

Nanodiamonds Could Be a Cancer Patient’s Best Friend

If you give a nanodiamond to your fiancée, you can forget about the wedding. But a new study reports that these tiny flecks of carbon can shrink tumors in mice by delivering chemotherapy drugs to cancer cells. Lead author Dean Ho, a biomedical engineer at Northwestern University in Evanston, Illinois, … More

 

Paper, Plastic, or Steel?

The ancient Chinese art of paper folding is probably not in most people’s minds when rushing to bag their groceries. But engineers have now built a foldable grocery bag from steel (go ahead, load it with soda bottles!) using an origami-inspired design that could help speed up factory packaging processes. … More

 

Laundry Lint Pollutes the World’s Oceans

There’s nothing subtle about dryer lint: Clean the fluffy, gray mat off the filter or risk a fire. Washer lint, however, is sneaky. Nearly 2000 polyester fibers can float away, unseen, from a single fleece sweater in one wash cycle, a new study reports. That synthetic lint likely makes its … More

 

How to Build a Hardy Web

Flies caught in webs with hungry spiders bearing down on them don’t have the time to appreciate good engineering. Luckily, researchers aren’t so constrained. A new analysis reveals the intricacies of spider web design, showing how the unique properties of its silk turn webs into flexible yet strong traps. “This … More

 

Wax-Filled Nanotubes Flex Their Muscles

Here’s a twist: Scientists have designed a flexible, yarnlike artificial muscle that can also pack a punch. It can contract in 25 milliseconds—a fraction of the time it takes to blink an eye—and can generate power 85 times as great as a similarly sized human muscle. The new muscles are … More

 

Going Live With Click Chemistry: Berkeley Researchers Create a Copper-free Version of the Technique

“We’ve developed a copper-free variant of the click chemistry reaction that possesses comparable kinetics to the copper-catalyzed reaction and proceeds within minutes on live cells with no apparent toxicity,” said chemist Carolyn Bertozzi, the principal investigator on this project. “This is the first example of a click chemistry reaction that, … More

 

Atom by atom in 3-D

In preliminary tests at the FEI Company, before the TEAM 0.5 was shipped, NCEM’s Christian Kisielowski tested the microscope’s ability to resolve individual atoms and precisely locate their positions in three dimensions. He made a series of images of two gold crystals connected by a “nanobridge” only a few dozen … More

 
Synthetic Rubber receive

Synthetic Rubber receive

The rapid development of industries in the early 20th century, there was a huge demand for rubber. But natural rubber was too small to meet these needs. So sharply question of obtaining synthetic rubber. In the late 20’s of our century Leningrad chemists led by SV Lebedev developed a method … More

 
Volkswagen developed the ice-glass

Volkswagen developed the ice-glass

Despite the cold winter, soon many drivers will not have to scrape ice from the windows of their cars. Volkswagen engineers first introduced automotive glass, which does not form frost and ice. They were developed in conjunction with scientists from the Fraunhofer Institute IST in Braunschweig. In contrast to the … More