Durable, optically transparent, and superhydrophobic coating
AssigneeWaymo LLC
InventorsJohn T. Simpson, Bryce Remesch
Life of this patent
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Abstract
An article including a durable, optically transparent, and superhydrophobic coating is described. In one aspect, the present disclosure provides an article comprising a substrate, and disposed adjacent the substrate, a layer comprising graphitic carbon, diamond-like carbon, and aerogel. In another aspect, the present disclosure provides a method for preparing a coated substrate, comprising providing a carbon layer disposed on a substrate and having a textured surface; and disposing aerogel adjacent to at least a portion of the textured surface.
Claims20
An article comprising
- a substrate;
- and
- disposed adjacent the substrate, a layer having a first side adjacent the substrate and an
- opposed second side, the disposed layer comprising
- graphitic carbon and diamond-like carbon, present in a combined amount of 60-98 wt. %;
- and
- aerogel, present in an amount of 2-40 wt. %, wherein at least a portion of the aerogel is disposed interstitially between spaced features extending perpendicularly to the substrate and comprising at least a portion of the graphitic carbon and diamond-like carbon.
A coated substrate prepared according to a method comprising:
- providing a carbon layer disposed on a substrate, the carbon layer having a first side adjacent the substrate and an opposed second side having a textured surface, the carbon layer comprising at least 80 wt. % of a combined amount of graphitic carbon and diamond-like carbon;
- and
- disposing aerogel adjacent to at least a portion of the textured surface;
- wherein the textured surface comprises a plurality of spaced features extending perpendicularly to the substrate and comprising at least a portion of the graphitic carbon and diamond-like carbon, the features having an average spacing of 10-2000 nm.
Dependencies are inferred from the claim text.