science newsletter: Science News SciGuru.com

Πέμπτη 21 Νοεμβρίου 2013

Science News SciGuru.com

Researchers Integrate Single-Crystal BFO onto a Silicon Chip, Open Door to Smart Devices
Researchers break a theoretical time barrier on bouncing droplets
Stents aren’t more help for renal artery stenosis

Researchers Integrate Single-Crystal BFO onto a Silicon Chip, Open Door to Smart Devices

Posted: 20 Nov 2013 10:05 AM PST

Researchers from North Carolina State University have for the first time integrated a material called bismuth ferrite (BFO) as a single crystal onto a silicon chip, opening the door to a new generation of multifunctional, smart devices.

This high-resolution TEM micrograph shows BFO grown on a silicon substrate and aligned with an LSMO (lanthanum strontium manganese oxide) electrode. Click to enlarge.

Researchers break a theoretical time barrier on bouncing droplets

Posted: 20 Nov 2013 09:00 AM PST

Those who study hydrophobic materials — water-shedding surfaces such as those found in nature and created in the laboratory — are familiar with a theoretical limit on the time it takes for a water droplet to bounce away from such a surface. But MIT researchers have now found a way to burst through that perceived barrier, reducing the contact time by at least 40 percent.

Stents aren’t more help for renal artery stenosis

Posted: 20 Nov 2013 08:24 AM PST

Renal artery stenosis, a narrowing of arteries that lead to the kidneys because of athlerosclerosis, affects millions of Americans. Doctors have disagreed about how to treat it. Results from the CORAL clinical trial, simultaneously published in the New England Journal of Medicine and presented at the annual meeting of the American Heart Association Nov. 18, 2013, show there is no additional long-term benefit to inserting a stent in patients who are provided a good regimen of drug and medical therapies.