All-additive fabrication of inorganic logic elements by liquid embossing

Bulthaup, Colin A.; Wilhelm, Eric J.; Hubert, Brian N.; Ridley, Brent A.; Jacobson, Joseph M.
September 2001
Applied Physics Letters;9/3/2001, Vol. 79 Issue 10
Academic Journal
We report an all-additive patterning technique, liquid embossing, in which a thin liquid film is embossed by an elastomeric stamp. We show that, for sufficiently thin films, isolated features are produced as the stamp contacts the underlying substrate, and that the liquid remains patterned even after removal of the stamp. Such an approach enables the rapid patterning of inorganic nanocrystal solutions, as capping groups and solvents can volatilize efficiently at the exposed liquid surface. Using this technique, we have fabricated all-printed all-inorganic transistors, photodetectors, and resistors, as well as multilayer structures with sacrificial layers and vias. Such an approach may enable a route to all-printed inorganic semiconductor logic and machines. © 2001 American Institute of Physics.


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