Peeling off Slimy Biofilms like Old Stickers

Researchers at Princeton have found a new method to remove biofilms, bacterial mats that can cause infections and foul industrial equipment. The method, using peeling, contrasts with scraping or mechanically dislodging biofilms, which can leave patches that regrow and recontaminate.
Credit: Yan et al./Princeton University

Slimy, hard-to-clean bacterial mats called biofilms cause problems ranging from medical infections to clogged drains and fouled industrial equipment. Now, researchers at Princeton have found a way to cleanly and completely peel off these notorious sludges.

By looking at the films from a mechanical engineering perspective, as well as a biological one, the researchers showed that water penetrating the junction between biofilms and surfaces, coupled with gentle peeling...

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Where did the Hot Neptunes go? A Shrinking Planet holds the answer


This artist’s illustration shows a giant cloud of hydrogen streaming off a warm, Neptune-sized planet just 97 light-years from Earth. The exoplanet is tiny compared to its star, a red dwarf named GJ 3470. The star’s intense radiation is heating the hydrogen in the planet’s upper atmosphere to a point where it escapes into space. The alien world is losing hydrogen at a rate 100 times faster than a previously observed warm Neptune whose atmosphere is also evaporating away.
Credit: © Crédit NASA, ESA, and D. Player (STScI)

Astronomers explain the rarity of the hot Neptunes by their evaporation which transforms them into super-Earths...

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An Energy-efficient way to stay Warm: Sew High-Tech Heating Patches to your Clothes


This image shows how to make a personal heating patch from polyester fabric fused with tiny silver wires, using pulses of intense light from a xenon lamp.
Credit: Hyun-Jun Hwang and Rajiv Malhotra/Rutgers University-New Brunswick

Personal patches could reduce energy waste in buildings, Rutgers-led study says. What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes – while significantly reducing your electric bill and carbon footprint?

Engineers at Rutgers and Oregon State University have found a cost-effective way to make thin, durable heating patches by using intense pulses of light to fuse tiny silver wires with polyester...

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Large Population of Potential Young Planets found in Distant Planetary Systems


UNLV researchers Shangjia Zhang and Zhaohuan Zhu led an international team of astronomers in a study that used the powerful ALMA telescope to discover that in other parts of the Milky Way Galaxy (seen here) there is potentially a large population of young planets — similar in mass to Neptune or Jupiter — at wide-orbit that are not detectable by other current planet searching techniques. (Photo courtesy of NRAO/AUI/NSF, Jeff Hellerman)

Astronomers used the powerful ALMA telescope to discover that in other parts of the Milky Way Galaxy (seen here) there is potentially a large population of young planets – similar in mass to Neptune or Jupiter – at wide-orbit that are not detectable by other current planet searching techniques...

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