IN-SITU SYNTHESIS AND DEPOSITION OF HIGH ENTROPY ALLOY AND MULTI METAL OXIDE NANO/MICRO PARTICLES BY FEMTOSECOND LASER DIRECT WRITING

    公开(公告)号:US20220121122A1

    公开(公告)日:2022-04-21

    申请号:US17502539

    申请日:2021-10-15

    IPC分类号: G03F7/20 G03F7/004

    摘要: A method for synthesizing and simultaneously depositing and coating one or more layers of mixed metals to obtain one or more layers of high entropy alloys (HEAs) includes depositing a first metal precursor ink and drying the first metal precursor ink to obtain a first precursor film layer, applying a laser-direct writing (LDW) with pulsed laser source to the first precursor film layer to obtain a first layer of HEA, and rinsing the first layer of HEA with water to remove un-sintered precursor film to obtain one or more layers of HEAs. The first layer of HEA has a first metal corresponding to the first metal precursor. The one or more layers of HEAs includes a predetermined pattern of one or more layers, and the one or more layers may have a single metal or multiple metals.

    A METHOD AND AN APPARATUS FOR MANUFACTURING A POROUS GRAPHENE LAYER ACROSS A PRECURSOR MATERIAL LAYER ON A SUBSTRATE THROUGH THERMALLY LOCALIZED LASER GRAPHITISATION

    公开(公告)号:US20230088640A1

    公开(公告)日:2023-03-23

    申请号:US17798854

    申请日:2021-01-28

    IPC分类号: C01B32/184 B01J19/12 H01B1/04

    摘要: The present disclosure provides a method and an apparatus for manufacturing a porous graphene layer across a precursor material layer on a substrate. The method comprises: determining a first temperature threshold and a second temperature threshold, the first temperature threshold being a minimum temperature required for forming the porous graphene layer from a precursor material layer on a portion of the substrate, the second temperature threshold being one at which the substrate is likely to experience thermal damages above this temperature threshold; determining at least one of operating parameters of a light source, wherein exposing the precursor material layer to the light source that is operating under the at least one of the operating parameters causes a temperature of the portion of the substrate adjoining a side of the precursor material layer to maintain below the second temperature threshold and a temperature of the opposite side of the precursor material layer to rise above the first temperature threshold; and generating an a beam of light from the light source to the precursor material layer based on the at least one of operating parameters of the light source to form the porous graphene layer.