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| Portrait of the modern physics startup Posted: 23 Apr 2014 11:28 AM PDT In recent decades, many large high-tech companies have eliminated in-house research programs, turning instead to startup companies as their primary source of breakthrough innovations.A new report on physics startups, based on interviews with 140 physicists and other professionals at some 91 startup companies in 14 states, finds that companies are engaged in making medical devices, manufacturing tools, nanotechnology, lasers and optical devices, renewable energy technologies and other products.  |
| Copper nanowires could become basis for new solar cells Posted: 23 Apr 2014 11:28 AM PDT By looking at a piece of material in cross section, engineers discovered how copper sprouts grass-like nanowires that could one day be made into solar cells. The researchers worked with copper foil, a simple material similar to household aluminum foil. When most metals are heated, they form a thick metal oxide film. However, a few metals, such as copper, iron and zinc, grow grass-like structures known as nanowires, which are long, cylindrical structures a few hundred nanometers wide by many microns tall. They set out to determine how the nanowires grow.  |
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