Patent ID: 11937372
Assignee: YALE UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 22:
23. A stretchable circuit board assembly comprising:
a stretchable substrate;
at least one GaIn trace positioned over the stretchable substrate;
at least one electrical component electrically connected to the at least one GaIn trace and positioned over the stretchable substrate; and
a stretchable encapsulating layer positioned over the stretchable substrate, the at least one GaIn trace, and the at least one electrical component, configured to seal the at least one GaIn trace and the at least one electrical component from outside air;
wherein the at least one GaIn trace comprises a quantity of liquid GaIn and a plurality of solid particles of Ga2O3 suspended in the quantity of liquid GaIn, the Ga2O3 particles having a median particle size between 8 μm and 25 μm wherein the volumetric ratio of solid particles to liquid metal is between 0.4 and 0.7.