heat-resistant circuit boards tagged posts

3D-Printed Structures Shrink when Heated

3d-printed-structures-shrink-when-heated-science-astronomy-medical-news-up_2016-10-26_14-15-26

(a) Schematic of the multimaterial projection microstereolithography system. [(b) and (e)] Computer-aided designs and fabricated samples in [(c) and (f)] three-dimensional and [(d) and (g)] two-dimensional views of the fabricated unit cell and 2 by 2 lattice, respectively.

Counterintuitive ‘metamaterial’ may enable heat-resistant circuit boards. Almost all solid materials, from rubber and glass to granite and steel, inevitably expand when heated. Only in very rare instances do certain materials buck this thermodynamic trend and shrink with heat. Eg, cold water will contract when heated 0 – 4C, before expanding. Engineers from MIT, the University of Southern California, and elsewhere are now adding to this curious class of heat-shrinking materials...

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