(Phys.org) —Researchers from North Carolina State University have developed a   
   method for creating "nano-volcanoes" by shining various colors of light   
   through a nanoscale "crystal ball" made of a synthetic polymer. These   
   nano-volcanoes can store precise    
   amounts of other materials and hold promise for new drug-delivery   
   technologies.    
      
      
   The researchers create the nano-volcanoes by placing spherical, transparent   
   polymer nanoparticles directly onto the flat surface of a thin film. They then   
   shine ultraviolet light through the transparent sphere, which scatters the   
   light and creates a    
   pattern on the thin film. The thin film is made of a photoreactive material   
   that undergoes a chemical change wherever it has been struck by the light. The   
   researchers then submerge the thin film in a liquid solution that washes away   
   the parts of the film    
   that were exposed to light. The material that remains is shaped like a   
   nanoscale volcano.   
      
     http://phys.org/news/2013-06-light-carved-nano-volcanoes-drug-delivery.html   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)