(Phys.org) —The smaller components become, the more difficult it is to create   
   patterns in an economical and reproducible way, according to an    
   nterdisciplinary team of Penn State researchers who, using sound waves, can   
   place nanowires in repeatable    
   patterns for potential use in a variety of sensors, optoelectronics and   
   nanoscale circuits.    
      
   "There are ways to create these devices with lithography, but it is very hard   
   to create patterns below 50 nanometers using lithography," said Tony Jun   
   Huang, associate professor of engineering science and mechanics, Penn State.   
   "It is rather simple now    
   to make metal nanomaterials using synthetic chemistry. Our process allows   
   pattern transfer of arrays of these nanomaterials onto substrates that might   
   not be compatible with conventional lithography. For example, we could make   
   networks of wires and then    
   pattern them to arrays of living cells."   
      
   Read more at:   
   http://phys.org/news/2013-06-precisely-position-nanowires.html   
      
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