Researchers from the Johannes Kepler University in Linz, Austria, have shown   
   that they can grow uniformly sized quantum dots on pit-patterned substrates   
   with inter-dot distances varying from a few hundred nanometres to several   
   microns on one and the same    
   sample. Being able to accurately control inter-dot distances in this way will   
   be useful for making a variety of electronic and optoelectronic devices with   
   novel functionalities, such as single photon emitters.   
      
   http://iopscience.iop.org/0957-4484/labtalk-article/52689   
      
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