Experimental study demonstrates direct-write fabrication of free-standing liquid metal microstructures at room temperature, highlighting the stabilizing role of surface oxide layers.
This paper describes a method to direct-write 3D liquid metal microcomponents at room temperature. The thin oxide layer on the surface of the metal allows the formation of mechanically stable structures strong enough to stand against gravity and the large surface tension of the liquid. The method is capable of printing wires, arrays of spheres, arches, and interconnects.
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Ladd et al. (2013) studied this question.
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