Elastomeric silicone foams 3D printed via direct ink writing on top of circuit boards provide electrical and mechanical protection

https://www.llnl.gov/article/52021/3d-printed-solutions-electronics-protection

"electrostatic discharge protection, circuit board survives strike with a hammer... cellular foams with customizable pore architectures evenly distribute stress, amenable to silicone resins (low volatility, good elasticity, plasticity, viscosity, broad thermal stability) tuned to precise control... direct ink writing extrusion process... silicone resin formulation of conductive carbon nanotube concentrates, and rheological modifiers (thickeners) allowing tailored porosities at high resolutions... medical, soft robotics, wearables"

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https://www.eurekalert.org/news-releases/1069331