Patent ID: 11903139
Assignee: CARNEGIE MELLON UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G  B | IPC G  H

Claim 11:
12. A soft-matter electronic device created by a molding process, the molding process comprising:
creating an elastomer mold containing a plurality of microchannels forming an electronic circuit, wherein each microchannel of the plurality of microchannels comprises a depression in a surface of the elastomer mold;
depositing a thin film of a liquid-phase eutectic alloy on a donor surface;
mating the elastomer mold onto the donor surface to transfer the thin film to the mold,
wherein the liquid-phase eutectic alloy is drawn into the plurality of microchannels via contact with the thin film, wherein the liquid-phase eutectic alloy is only present within the plurality of microchannels,
wherein a residual layer of non-conductive alloy oxide forms on the mold between the plurality of microchannels, wherein the residual layer is outside of the plurality of microchannels;

separating the elastomer mold from the donor surface, wherein the liquid-phase eutectic alloy remains in the plurality of microchannels of the elastomer mold;
sealing the plurality of microchannels of the elastomer mold containing the liquid-phase eutectic alloy and the residual layer with an elastomer to form the soft-matter electronic device.