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    POROUS MULTI-METAL OXIDE NANOTUBES AND PRODUCTION METHOD THEREFOR
    83.
    发明公开
    POROUS MULTI-METAL OXIDE NANOTUBES AND PRODUCTION METHOD THEREFOR 审中-公开

    公开(公告)号：US20240141558A1

    公开(公告)日：2024-05-02

    申请号：US18410007

    申请日：2024-01-11

    申请人： Hyundai Motor Company ,  Kia Corporation ,  Daegu Gyeongbuk Institute of Science and Technology

    发明人： Ju Ahn Park ,  Sangaraju Shanmugam

    IPC分类号： D01F9/10 ,  D01D5/00 ,  H01M8/10

    CPC分类号： D01F9/10 ,  D01D5/003 ,  D01D5/0061 ,  H01M8/10 ,  H01M2008/1095

    摘要： Disclosed are porous multi-metal oxide nanotubes and a production method therefor. In one aspect, methods for producing porous multi-metal oxide nanotubes are provided comprising: (a) preparing an admixture comprising metal-acetylacetonate precursors, polyacrylonitrile (PAN) and a solvent component; and (b) producing a nanocomposite from the admixture, wherein metals of the metal-acetylacetonate precursors comprise a non-radioactive alkali metal stable isotope and a non-radioactive alkaline earth metal stable isotope. As such, porous multi-metal oxide nanotubes having a single-phase multivalence may be obtained in high yield without using harmful chemical substances. In addition, the polymer electrolyte membrane including the porous multi-metal oxide nanotubes may have maintained and improved mechanical strength, and thus may have maintained durability even during cell operation and may also have improved proton conductivity even at low humidity. The fuel cell including the polymer electrolyte membrane may have improved performance.

    Force sensor
    85.
    发明授权
    Force sensor 有权

    公开(公告)号：US11971315B2

    公开(公告)日：2024-04-30

    申请号：US17427775

    申请日：2019-07-23

    申请人： DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY

    发明人： June Seo Kim ,  Myoung Jae Lee ,  Hyeon Jun Lee

    IPC分类号： G01L1/12 ,  H01F10/14 ,  H01F10/32

    CPC分类号： G01L1/122 ,  H01F10/14 ,  H01F10/325 ,  H01F10/3254

    摘要： Disclosed is a force sensor. More particularly, the force sensor includes a first permanent magnet layer; a magnetic tunnel junction disposed on the first permanent magnet layer and configured to have a preset resistance value; and a second permanent magnet layer disposed to be spaced apart from the magnetic tunnel junction, wherein the second permanent magnet layer moves in a direction of the first permanent magnet layer when pressure is applied from outside, the preset resistance value of the magnetic tunnel junction is changed when a magnetic field strength formed between the first permanent magnet layer and the second permanent magnet layer becomes a preset strength or more according to movement of the second permanent magnet layer, and the force sensor senses the pressure based on a change in the preset resistance value.

    Porous multi-metal oxide nanotubes and production method therefor
    87.
    发明授权
    Porous multi-metal oxide nanotubes and production method therefor 有权

    公开(公告)号：US11905624B2

    公开(公告)日：2024-02-20

    申请号：US17341955

    申请日：2021-06-08

    申请人： Hyundai Motor Company ,  Kia Corporation ,  Daegu Gyeongbuk Institute of Science and Technology

    发明人： Ju Ahn Park ,  Sangaraju Shanmugam

    IPC分类号： D01F9/10 ,  H01M8/10 ,  D01D5/00

    CPC分类号： D01F9/10 ,  D01D5/003 ,  D01D5/0061 ,  H01M8/10 ,  H01M2008/1095

    摘要： Disclosed are porous multi-metal oxide nanotubes and a production method therefor. In one aspect, methods for producing porous multi-metal oxide nanotubes are provided comprising: (a) preparing an admixture comprising metal-acetylacetonate precursors, polyacrylonitrile (PAN) and a solvent component; and (b) producing a nanocomposite from the admixture, wherein metals of the metal-acetylacetonate precursors comprise a non-radioactive alkali metal stable isotope and a non-radioactive alkaline earth metal stable isotope. As such, porous multi-metal oxide nanotubes having a single-phase multivalence may be obtained in high yield without using harmful chemical substances. In addition, the polymer electrolyte membrane including the porous multi-metal oxide nanotubes may have maintained and improved mechanical strength, and thus may have maintained durability even during cell operation and may also have improved proton conductivity even at low humidity. The fuel cell including the polymer electrolyte membrane may have improved performance.

    ROTATIONAL TRIBOELECTRIC NANOGENERATOR FOR NEURO-STIMULATOR
    90.
    发明公开
    ROTATIONAL TRIBOELECTRIC NANOGENERATOR FOR NEURO-STIMULATOR 审中-公开

    公开(公告)号：US20240039428A1

    公开(公告)日：2024-02-01

    申请号：US18203696

    申请日：2023-05-31

    申请人： DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY

    发明人： Sang Hoon LEE ,  Min Seok KANG ,  Hee Jae SHIN

    IPC分类号： H02N1/04

    CPC分类号： H02N1/04

    摘要： The present invention relates to a neuro-stimulator, and more particularly, to a rotational triboelectric nanogenerator for a neuro-stimulator providing, as a device that may directly utilize nerve stimulation triboelectricity generated by rotational energy for nerve electrical stimulation, a device that may adjust waveforms and stimulation parameters of electricity generated during frictional contact through a combination of various materials with triboelectric properties and patterns of materials and electrodes, implement various nerve stimulation parameters by adjusting an external rotational speed or a distance between friction layers, does not require complicated circuits or voltages and batteries to drive the batteries, and may be driven through relatively small volume, inexpensive materials, a simple structure, and a simple operation method.