Ultralight Metallic Microlattices

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Ultralight Metallic Microlattices

Postby What's Burning? »

Saw this jaw droping article... It will find a use in F1 soon enough! :P

Ultralight (<10 milligrams per cubic centimeter) cellular materials are desirable for thermal insulation; battery electrodes; catalyst supports; and acoustic, vibration, or shock energy damping. We present ultralight materials based on periodic hollow-tube microlattices. These materials are fabricated by starting with a template formed by self-propagating photopolymer waveguide prototyping, coating the template by electroless nickel plating, and subsequently etching away the template. The resulting metallic microlattices exhibit densities ρ ≥ 0.9 milligram per cubic centimeter, complete recovery after compression exceeding 50% strain, and energy absorption similar to elastomers. Young’s modulus E scales with density as E ~ ρ2, in contrast to the E ~ ρ3 scaling observed for ultralight aerogels and carbon nanotube foams with stochastic architecture. We attribute these properties to structural hierarchy at the nanometer, micrometer, and millimeter scales.

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Re: Ultralight Metallic Microlattices

Postby Fred_C_Dobbs »

Hard to imagine anything with a metallic basis could compare to carbon nanotubes. I've been waiting for years for a bicycle frame made from Bucky balls.
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