The next big thing in medical diagnostics could be minutes particles of rust, iron oxide, coated with the material from which sand is formed, silicon dioxide. These magnetic nanoparticles, a mere 29 to 230 nanometers across, ...
Bio & Medicine
Jan 31, 2011
0
0
A promising approach for making solar cells that are inexpensive, lightweight and flexible is to use organic (that is, carbon-containing) compounds instead of expensive, highly purified silicon. But one stubborn problem has ...
Nanomaterials
Jan 6, 2011
4
0
Microchips that 'harvest' the energy they need from their own surroundings, without depending on batteries or mains electricity. That will be possible now that Dutch researchers from the University of Twente's MESA+ Institute ...
Electronics & Semiconductors
Dec 14, 2010
0
0
(PhysOrg.com) -- Researchers at the University of Pennsylvania have developed a new electronic method for detecting microRNA isolated from living cells. MicroRNAs are a class of small biomolecules that control gene expression ...
Bio & Medicine
Oct 26, 2010
0
0
Conventional solar cells made from crystalline silicon are difficult and energy-intensive to manufacture. Organic solar cells are cheaper, but have always produced less electricity. Why this is so has never been fully explained. ...
General Physics
Oct 26, 2010
0
0
Patterns of grooves etched into the surface of a silicon chip can guide, trap and filter migrating cells, biomaterials scientists from Japan and Korea have discovered. The results open the way to engineering surfaces to study ...
Biochemistry
Oct 22, 2010
0
0
(PhysOrg.com) -- Ultra-thin solar cells can absorb sunlight more efficiently than the thicker, more expensive-to-make silicon cells used today, because light behaves differently at scales around a nanometer, say Stanford ...
Nanomaterials
Sep 27, 2010
3
0
At the 25th European Photovoltaic Solar Energy Conference (Valencia, Spain), Imec presents several large-area silicon solar cells with a conversion efficiency above 19%.
Energy & Green Tech
Sep 6, 2010
4
0
A new low-cost etching technique developed at the U.S. Department of Energy's National Renewable Energy Laboratory can put a trillion holes in a silicon wafer the size of a compact disc.
Nanomaterials
Sep 3, 2010
16
0
Like an ice cube on a warm day, most materials melt -- that is, change from a solid to a liquid state -- as they get warmer. But a few oddball materials do the reverse: They melt as they get cooler. Now a team of researchers ...
Nanomaterials
Aug 2, 2010
0
0
