| 
 
 | 
                     
                      | 
                           
                            |  | 
                                 
                                  | Photonic 
                                    crystals are all the rage in research circles 
                                    these days because of their ability to channel 
                                    and alter lightwaves. Researchers are beginning 
                                    to look for ways to change, or tune, crystals 
                                    on-the-fly. A simulation shows that adding 
                                    a shock wave to the mix leads to a high degree 
                                    of control over light -- a boon for telecommunications 
                                    and solar energy. Full 
                                    story
 |  |  |   
                      |  |  |  |