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    CYBER-PHYSICAL WATERMARKING WITH INKJET EDIBLE BIOPRINTING
    2.
    发明申请
    CYBER-PHYSICAL WATERMARKING WITH INKJET EDIBLE BIOPRINTING 有权

    公开(公告)号：US20250166110A1

    公开(公告)日：2025-05-22

    申请号：US18726816

    申请日：2022-12-23

    Applicant: Purdue Research Foundation

    Inventor： Young Kim ,  Hee Jae Jeon ,  Jungwoo Leem ,  Sang Mok Park ,  Yuhyun Ji

    IPC: G06T1/00 ,  A23P20/15 ,  A23P20/25 ,  B41M3/10 ,  B41M5/00 ,  H04N1/32

    Abstract: A method of ascertaining identity, verification, or authentication of a product is disclosed which includes embedding a predetermined watermark on a host image, thereby generating an edible watermarked image, printing the watermarked image using edible ink on an attack-resistant edible substrate, affixing the printed substrate onto the product, providing a color reference chart along with the watermarked image, obtaining an image of the watermarked image from the product, establishing correspondence between the watermarked image and the color reference chart, correcting the obtained image based on the established correspondence, extracting the embedded predetermined watermark from the corrected watermarked image, and determining identity, verification, and authentication of the product by analyzing the extracted predetermined watermark of the watermarked image.

    Interactive noise cancelling headphone
    4.
    发明授权
    Interactive noise cancelling headphone 有权

    公开(公告)号：US12293751B2

    公开(公告)日：2025-05-06

    申请号：US18134242

    申请日：2023-04-13

    Applicant: Purdue Research Foundation

    Inventor： Shima Jahani ,  Hamid Basaeri

    IPC: G10K11/16 ,  G10K11/178 ,  H04R3/02

    Abstract: A method of reducing signals associated with one or more classes of unwanted noise is disclosed which includes choosing one or more classes as noise to be cancelled while allowing the remainder of classes amongst a plurality of classes to pass through, dividing an incoming time-varying signal into a plurality of snippets having a single or a plurality of durations, transforming each snippet into an associated frequency spectrum, thus generating a plurality of spectra, for each spectrum of the plurality of spectra, identifying presence of the one or more classes chosen as noise, for each identified class of noise, multiplying a 180° phase-shifted version of a frequency signal associated with the identified class of noise by a frequency spectrum of the incoming signal, thereby generating an associated frequency-domain noise-cancelled spectrum, inverse transforming the frequency-domain noise-cancelled spectrum into a time-varying noise-cancelled signal, and outputting the time-varying noise-cancelled signal.

    Continuous laser nanoforming methods
    8.
    发明授权
    Continuous laser nanoforming methods 有权

    公开(公告)号：US12280448B2

    公开(公告)日：2025-04-22

    申请号：US18654116

    申请日：2024-05-03

    Applicant: Purdue Research Foundation

    Inventor： Ramses Valentin Martinez ,  Debkalpa Goswami

    IPC: B23K26/356 ,  B23K26/08 ,  B23K103/00 ,  B23K103/14 ,  C21D10/00

    Abstract: Methods of transferring a metallic film to a flexible substrate using a roll-to-roll nanoforming assembly include transferring the metallic film to a nanomold such that a metal layer of the metallic film contacts the nanomold and an ablative layer of the metallic film contacts a confinement layer during continuous motion of the metallic film relative to the confinement layer. Further, the method includes directing a laser beam through the confinement layer onto the ablative layer of the metallic film to form a nanoformed metal from the metallic film as the metallic film moves relative to the confinement layer and the laser generator, and transferring the nanoformed metal onto the flexible substrate.

    Ultra-thin diffusion barrier
    9.
    发明授权
    Ultra-thin diffusion barrier 有权

    公开(公告)号：US12278186B2

    公开(公告)日：2025-04-15

    申请号：US17681817

    申请日：2022-02-27

    Applicant: Purdue Research Foundation

    Inventor： Zhihong Chen ,  Chun-Li Lo

    IPC: H01L23/532 ,  H01L21/768

    Abstract: A method of providing a barrier to diffusion of metal into a dielectric in a metal interconnect arrangement is disclosed which includes forming a damascene trench, including forming a dielectric base, with a trench made therein, depositing one or more two dimensional diffusion barrier layers formed over the trench, depositing a conductor layer formed atop the diffusion layer, wherein the one or more two-dimensional diffusion barrier layers substantially prevent diffusion of constituents of the conductor layer into the dielectric base, wherein each of the one or more two-dimensional diffusion barrier layers is a polycrystalline material selected from the group consisting of TaSex, TaTex, TiSx, TiSex, TiTex, and TaSx, and wherein x is between 1.5-1.9.

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