News tagged with impurities

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All that glitters is not gold

(PhysOrg.com) -- Researchers developing key new technology electronics like quantum computing or advanced detectors, as well as those studying basic material science and metal surface properties, often find ...

Sep 29, 2011
5 / 5 (3) 1

Hydrogen fuel put to the test

National Physical Laboratory has developed a suite of analytical methods to detect trace-level impurities in hydrogen fuel that can affect the performance of hydrogen fuel cells – a potentially carbon-free ...

Sep 27, 2011
5 / 5 (2) 0

Disorder is key to nanotube mystery

Scientists often find strange and unexpected things when they look at materials at the nanoscale -- the level of single atoms and molecules. This holds true even for the most common materials, such as water.

Aug 12, 2011
4.9 / 5 (9) 3 | with audio podcast

Hybrid solar system makes rooftop hydrogen

While roofs across the world sport photovoltaic solar panels to convert sunlight into electricity, a Duke University engineer believes a novel hybrid system can wring even more useful energy out of the sun's ...

Aug 09, 2011
4.8 / 5 (17) 8 | with audio podcast

Embracing superficial imperfections

Chemists normally work rigorously to exclude impurities from their reactions. This is especially true for scanning tunneling microscopy (STM) experiments that can produce atomic-scale images of surfaces. Using ...

Jul 01, 2011
5 / 5 (2) 0 | with audio podcast

Lowering the color of crystals in sugar factories

Like diamonds, sugar crystals ideally are very pure and low in color. Now studies led by U.S. Department of Agriculture (USDA) chemist Gillian Eggleston have provided a better understanding of the source of undesirable color ...

Jun 23, 2011
not rated yet 0

Advanced instrument used to read cells' minds

Researchers at the Stanford University School of Medicine have taken a machine already in use for the measurement of impurities in semiconductors and used it to analyze immune cells in far more detail than ...

May 05, 2011
4.3 / 5 (4) 2 | with audio podcast