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          Top 10 emerging technologies of 2019
          
        
          
      
          
      
          
        
          
          chinadaily.com.cn |
          Updated: 2019-07-09 06:40
          
          
          
          
        


        
      
          
      
          
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          Metalenses
           

           
  
 
          
   This flat metalens is the first single metalens that can focus the entire visible spectrum of light -- including white light -- in the same spot and in high resolution. [Photo/Shanghai Youth Science Society] 
 
           

           

          These lenses are so small that, up until now, it has been impossible to make them through traditional glass-cutting and glass-curving techniques. A breakthrough in the way lenses are produced will allow further miniaturization in sensors and medical imaging devices.
           

          
        
          

        
        
      
          
        
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