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Thursday, November 6, 2014

ScienceDaily: Engineering and Construction News

ScienceDaily: Engineering and Construction News


Clearing a path for electrons in polymers: Closing in on the speed limits

Posted: 05 Nov 2014 10:19 AM PST

A new class of low-cost polymer materials, which can carry electric charge with almost no losses despite their seemingly random structure, could lead to flexible electronics and displays which are faster and more efficient.

Engineered for tolerance, bacteria pump out higher quantity of renewable gasoline

Posted: 05 Nov 2014 09:20 AM PST

An international team of bioengineers has boosted the ability of bacteria to produce isopentenol, a compound with desirable gasoline properties. The finding is a significant step toward developing a bacterial strain that can yield industrial quantities of renewable bio-gasoline.

Breaking down BPA and similar pollutants with sunlight, nanoparticles and graphene

Posted: 05 Nov 2014 07:13 AM PST

Many pollutants with the potential to meddle with hormones -- with bisphenol A, better known as BPA, as a prime example -- are already common in the environment. In an effort to clean up these pollutants found in the soil and waterways, scientists are now reporting a novel way to break them down by recruiting help from nanoparticles and light.

Longhorn beetle inspires ink to fight counterfeiting

Posted: 05 Nov 2014 07:12 AM PST

From water marks to colored threads, governments are constantly adding new features to paper money to stay one step ahead of counterfeiters. Now a longhorn beetle has inspired yet another way to foil cash fraud, as well as to produce colorful, changing billboards and art displays. Researchers report a new kind of ink that mimics the beetle's color-shifting ability in a way that would be long-lasting and difficult to copy.

Jet-fueled electricity at room temperature: Fuel cell can run without high heat

Posted: 05 Nov 2014 05:37 AM PST

Engineers have now developed the first room-temperature fuel cell that uses enzymes to help jet fuel produce electricity without needing to ignite the fuel. These new fuel cells can be used to power portable electronics, off-grid power and sensors.

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