[HN Gopher] Machine learning and nano-3D printing produce nano-a...
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       Machine learning and nano-3D printing produce nano-architected
       materials
        
       Author : gmays
       Score  : 12 points
       Date   : 2025-01-28 19:52 UTC (3 hours ago)
        
 (HTM) web link (news.engineering.utoronto.ca)
 (TXT) w3m dump (news.engineering.utoronto.ca)
        
       | jdranczewski wrote:
       | The material is very cool, but I'm almost more interested in the
       | progress in 3D nanofabrication this shows - "printing" material
       | in 3D by selective solidification tends to be pretty slow, as you
       | need to move around like a 3D printer head instead of one-
       | shotting an entire layer like in 2D lithography.
       | 
       | The fact that they have made a millimeter scale version of their
       | design instead of a small demo that looks cool under an electron
       | microscope is very impressive! The method is pretty clever too -
       | 2 photon absorption works only where the light is focused (and
       | therefore high intensity). They use a lens array to create 49
       | focus points, allowing them to parallelize the printing of the
       | repeating grid!
       | 
       | Scalable 3D fab could have fun implications for materials like
       | this, and for chip-scale photonics.
        
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       (page generated 2025-01-28 23:00 UTC)