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    Roll-to-roll manufacturing machines and methods for producing nanostructure-containing polymer films
    11.
    发明授权
    Roll-to-roll manufacturing machines and methods for producing nanostructure-containing polymer films 有权

    公开(公告)号：US12276046B2

    公开(公告)日：2025-04-15

    申请号：US18453224

    申请日：2023-08-21

    Applicant: Purdue Research Foundation

    Inventor： Mukerrem Cakmak

    IPC: B29C39/14 ,  B29C39/18 ,  B29C41/28 ,  B29C59/04 ,  B32B27/00 ,  D01D5/00 ,  B05C5/00 ,  B05C5/02 ,  B05C11/04 ,  B29C59/02 ,  B82Y40/00

    Abstract: A roll-to-roll manufacturing machine suitable for processing and producing polymer films that contain nanostructures, including but not limited to multifunctional polymer films. The machine applies a liquid polymer on a substrate to form a liquid polymer film, at least partially embeds nanostructures into the liquid polymer film, melt casts a layer of a molten polymer on the liquid polymer film to produce a thin polymer film, organizes the nanostructures in a thickness direction of the thin polymer film comprising applying an electric field to the thin polymer film, aligns the nanostructures in the thin polymer film by simultaneously subjecting the thin polymer film to heat and a field that aligns the nanostructures, and solidifies the thin polymer film to freeze the nanostructures along nanocolumns in a thickness direction of a solidified polymer film resulting therefrom.

    Large scale production of catechol-containing polymers
    13.
    发明授权
    Large scale production of catechol-containing polymers 有权

    公开(公告)号：US12269908B2

    公开(公告)日：2025-04-08

    申请号：US17787190

    申请日：2020-12-17

    Applicant: Purdue Research Foundation

    Inventor： Jonathan J. Wilker ,  Samuel L. Huntington ,  Amelia A. Putnam

    IPC: C08F212/08 ,  C08F212/14

    Abstract: This invention relates to a method for manufacturing a catechol-containing co-polymer through a suspension polymerization or a solution polymerization process. In some illustrative embodiments, this disclosure relates to a process of a free radical suspension polymerization for large-scale manufacturing catechol-containing copolymers. In some other illustrative embodiments, this disclosure relates to a solution polymerization of free radical, cationic, or anionic process for large-scale manufacturing catechol-containing copolymers. The process and the product thereof are within the scope of this disclosure.

    PLANT-BASED SUBSTRATE, APPLICATIONS AND METHOD OF FABRICATING THEREOF
    15.
    发明申请
    PLANT-BASED SUBSTRATE, APPLICATIONS AND METHOD OF FABRICATING THEREOF 有权

    公开(公告)号：US20250107925A1

    公开(公告)日：2025-04-03

    申请号：US18725571

    申请日：2023-01-05

    Applicant: Nanyang Technological University ,  Purdue Research Foundation

    Inventor： Nam-Joon CHO ,  Subra SURESH ,  Chi Hwan LEE ,  Youngkyu HWANG ,  Min Ku KIM

    IPC: A61F7/08 ,  A61F7/00 ,  A61F7/02 ,  H01B1/02 ,  H05B3/34

    Abstract: Disclosed herein is a conductive composite material, comprising a pollen-based substrate layer, an elastomeric adhesive layer on top of the pollen-based substrate layer, a biocompatible polymer substrate layer on top of the elastomeric adhesive layer, and a metal layer on top of the biocompatible polymer substrate layer and a method of forming the same. Also disclosed herein is a stretchable biopolymer-based heating pad comprising a pollen-based substrate layer, a cured polymeric layer or a metal layer on top of the pollen-based substrate layer, where, when present, the cured polymeric layer comprises a cured polymeric material and a metal, an encapsulation coating comprising a polymeric material that encapsulates the cured polymeric layer or the metal layer, wherein the pollen-based substrate layer and the cured polymeric layer are patterned to provide a heating pad and the method of forming the same.

    SELF-HEATING AND SUSTAINABLE PAVEMENT SYSTEM AND METHOD
    17.
    发明申请
    SELF-HEATING AND SUSTAINABLE PAVEMENT SYSTEM AND METHOD 有权

    公开(公告)号：US20250091943A1

    公开(公告)日：2025-03-20

    申请号：US18885107

    申请日：2024-09-13

    Applicant: Purdue Research Foundation

    Inventor： Maria Mirian Velay Lizancos ,  John E. Haddock ,  Pablo Orosa Iglesias ,  Manuel Uriel Aspilcueta Asencios

    IPC: C04B14/02 ,  C04B26/26 ,  C04B103/00 ,  C04B111/00 ,  C04B111/94

    Abstract: The electrically conductive pavement system includes a cold recycled asphalt mixture and a carbon black material. The carbon black material is mixed with the cold recycled asphalt mixture. The pavement system is configured to be heated. For instance, the pavement system includes a heating element and an electrical power source. The heating element may couple the electrical power source to the pavement system. In a more specific example, the heating element may include an electrical probe that include an electrically conductive cable or wire. The electrically conductive cable or wire may be selectively heated when the electrical power source is engaged. Once heated, the pavement system may have faster curing times and enhanced compaction over known pavements. The heating functionality also permits self-healing capabilities for more efficient repairs and enhanced durability. The heating functionality may also be utilized to melt ice and/or snow from a surface of the pavement system.

    High accuracy non-invasive current sensor system
    18.
    发明授权
    High accuracy non-invasive current sensor system 有权

    公开(公告)号：US12253545B2

    公开(公告)日：2025-03-18

    申请号：US17779480

    申请日：2020-11-24

    Applicant: Purdue Research Foundation

    Inventor： Kaushik Roy ,  Byunghoo Jung ,  Chamika Mihiranga Liyanagedera

    IPC: G01R15/20 ,  G01R19/14 ,  G01R25/00

    Abstract: System and methods for high accuracy, non-intrusive current sensing are provided. A system may include two magnetic field sensors configured for differential sensing. The system may further include frontend circuitry configured to remove direct current (DC) offset of the magnetic field sensors, upconvert the outputs of the magnetic field sensors, and filter out at least one frequency component from the up-converted signals. The system may receive output signals from the front-end circuitry corresponding to each sensor. The system may further calculate a differential signal based on the output signals. The system may apply optimal detection based on the differential signal and a reference signal to calculate a measurement of current flow. The system may determine a phase angle measurement between the differential signal and the reference signal to calculate a direction of the current flow in the conductor and output various measurement information related to the detected current.

    BI-PHASIC QUASI-STATIC BRAIN COMMUNICATION DEVICE AND METHOD
    20.
    发明申请
    BI-PHASIC QUASI-STATIC BRAIN COMMUNICATION DEVICE AND METHOD 有权

    公开(公告)号：US20250073479A1

    公开(公告)日：2025-03-06

    申请号：US18951518

    申请日：2024-11-18

    Applicant: Purdue Research Foundation

    Inventor： Shreyas Sen ,  Baibhab Chatterjee ,  Mayukh Nath

    IPC: A61N1/378 ,  A61N1/372 ,  H02J50/00 ,  H04B13/00

    Abstract: A system and method for brain-machine interface communication utilizing Bi-Phasic Quasi-Static Brain Communication (BP-QBC). The system includes a first device and a second device that are in wireless communication together. The system and method include signal transmission between the first device and the second device through dipole coupling. The system is configured to utilize compressive sensing and collision avoidance for enhanced net energy efficiency. The system and method utilize fully electrical quasi-static signaling to militate against energy transduction losses.

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