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    Methods for Preparing a Superomniphobic Coating
    1.
    发明申请
    Methods for Preparing a Superomniphobic Coating 有权

    公开(公告)号：US20210331967A1

    公开(公告)日：2021-10-28

    申请号：US16855378

    申请日：2020-04-22

    Applicant: Waymo LLC

    Inventor： John T. Simpson

    IPC: C03C17/02 ,  C23C14/34 ,  C23C14/10 ,  C23C14/06 ,  C23C14/02 ,  C03C15/00 ,  C03C17/34 ,  C03C17/42

    Abstract: A method for preparing an optically transparent, superomniphobic coating on a substrate, such as an optical substrate, is disclosed. The method includes providing a glass layer disposed on a substrate, the glass layer having a first side adjacent the substrate and an opposed second side, the glass layer comprising 45-85 wt. % silicon oxide in a first glass phase and 10-40 wt. % boron oxide in a second glass phase, such that a glass layer has a composition in a spinodal decomposition region. The method further includes heating the second side of the glass layer to form a phase-separated portion of the layer, the phase-separated portion comprising an interpenetrating network of silicon oxide domains and boron oxide domains, and removing at least a portion of the boron oxide domains from the phase-separated portion to provide a graded layer disposed on the substrate. The graded layer has a first side disposed adjacent the substrate, the first side comprising 45-85 wt. % silicon oxide and 10-40 wt. % boron oxide, and opposite the first side, a porous second side comprising at least 45 wt. % silicon oxide and no more than 5 wt. % boron oxide.

    Optically Transparent Superhydrophobic Thin Film
    4.
    发明申请
    Optically Transparent Superhydrophobic Thin Film 审中-公开

    公开(公告)号：US20190262861A1

    公开(公告)日：2019-08-29

    申请号：US16286545

    申请日：2019-02-26

    Applicant: Waymo LLC

    Inventor： John T. Simpson

    IPC: B05D5/08 ,  B05D3/14 ,  B05D7/00 ,  B05D7/24 ,  B05D1/00 ,  C08L27/12 ,  C08K3/36

    Abstract: A coating that can be easily applied, clear, well-bonded, and superhydrophobic is disclosed. In one aspect, a method for coating a substrate comprises providing a substrate having a surface, disposing a coating composition adjacent the surface, the composition comprising a hydrophobic fluorinated solvent, a binder comprising a hydrophobic fluorinated polymer, and hydrophobic fumed silica nanoparticles. Also disclosed is an article comprising a coating layer, the coating layer comprising a plurality of nanoparticles partially exposed on an outward surface thereof.

    Superomniphobic Bulk Optical Glass
    7.
    发明申请
    Superomniphobic Bulk Optical Glass 有权

    公开(公告)号：US20220033295A1

    公开(公告)日：2022-02-03

    申请号：US16942632

    申请日：2020-07-29

    Applicant: Waymo LLC

    Inventor： John T. Simpson

    IPC: C03C3/06 ,  C03C15/00 ,  C03C17/30 ,  C03C3/089 ,  C03C4/00

    Abstract: A method for preparing an optically transparent, superomniphobic glass composition is described. In one aspect, the present disclosure provides a method for preparing a glass composition, including heating a borosilicate glass comprising 45-85 wt. % silicon oxide and 10-40 wt. % boron oxide to form a phase-separated glass comprising an interpenetrating network of silicon oxide domains and boron oxide domains. The method includes removing at least a portion of the boron oxide domains from the phase-separated glass and depositing a hydrophobic silane to provide a porous glass having a hydrophobic silane layer disposed on a portion of the surface thereof, a total pore volume of 15-50 vol. %, and an average pore diameter of 20-300 nm. The method includes, within at least a portion of the volume of the porous glass, forming an aerogel precursor, and converting at least a portion of the aerogel precursor to an aerogel.

    Superomniphobic bulk optical glass
    9.
    发明授权
    Superomniphobic bulk optical glass 有权

    公开(公告)号：US11724955B2

    公开(公告)日：2023-08-15

    申请号：US16942632

    申请日：2020-07-29

    Applicant: Waymo LLC

    Inventor： John T. Simpson

    IPC: C03C3/06 ,  C03C15/00 ,  C03C17/30 ,  C03C3/089 ,  C03C4/00 ,  C03C23/00

    CPC classification number: C03C3/061 ,  C03C3/089 ,  C03C4/00 ,  C03C15/00 ,  C03C17/30 ,  C03C23/0095 ,  C03C2204/00 ,  C03C2217/76

    Abstract: A method for preparing an optically transparent, superomniphobic glass composition is described. In one aspect, the present disclosure provides a method for preparing a glass composition, including heating a borosilicate glass comprising 45-85 wt. % silicon oxide and 10-40 wt. % boron oxide to form a phase-separated glass comprising an interpenetrating network of silicon oxide domains and boron oxide domains. The method includes removing at least a portion of the boron oxide domains from the phase-separated glass and depositing a hydrophobic silane to provide a porous glass having a hydrophobic silane layer disposed on a portion of the surface thereof, a total pore volume of 15-50 vol. %, and an average pore diameter of 20-300 nm. The method includes, within at least a portion of the volume of the porous glass, forming an aerogel precursor, and converting at least a portion of the aerogel precursor to an aerogel.

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