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    One-transistor DRAM cell device having quantum well structure
    3.
    发明授权
    One-transistor DRAM cell device having quantum well structure 有权

    公开(公告)号：US11158732B2

    公开(公告)日：2021-10-26

    申请号：US16660203

    申请日：2019-10-22

    申请人： Gachon University of Industry-Academic cooperation Foundation

    发明人： Seongjae Cho ,  EunSeon Yu ,  Jae Yoon Lee

    IPC分类号： H01L29/78 ,  H01L29/66 ,  H01L27/108 ,  H01L29/12 ,  H01L29/165

    摘要： A 1T DRAM cell device having two or more heterojunction surfaces perpendicular to the channel length direction and a quantum well at the drain region side. The 1T DRAM cell device described herein may be driven by GIDL or band-to-band tunneling, so that low voltage and high speed operation can be performed, and retention time and read current margin can be dramatically increased. It can also be driven as a memory device in harsh environments with high temperatures. Furthermore, since the heterojunction surfaces can be formed by vertically stacking epitaxial layers on a semiconductor substrate such as silicon, the conventional CMOS process technology can be used, and the area occupied by the device can be reduced as much as possible without limiting the channel length.

    MICRO-NEEDLE AND METHOD OF MANUFACTURE
    4.
    发明申请
    MICRO-NEEDLE AND METHOD OF MANUFACTURE 有权

    公开(公告)号：US20210121673A1

    公开(公告)日：2021-04-29

    申请号：US16965177

    申请日：2018-11-07

    申请人： Gachon University of Industry-Academic Cooperation Foundation

    发明人： Jung Hwan PARK ,  Won Jun LEE ,  Ji Seok KIM ,  Hye Rin JEONG ,  Jee Hyun PARK

    IPC分类号： A61M37/00

    摘要： Disclosed is a microneedle including: a needle part including a plurality of tips formed from a liquid formulation formed with a medicinal solution and capable of penetrating the skin; and a base for supporting the plurality of tips; and a guide part configured to guide the needle part to penetrate the skin, wherein the needle part is provided with separation guides formed between the tips and the base to separate the tips from the base. According to such a configuration, the tips rapidly penetrate the skin and are rapidly separated therefrom, which allows quantitative drug delivery.

    VARIABLE PET APPARATUS
    10.
    发明申请
    VARIABLE PET APPARATUS 审中-公开

    公开(公告)号：US20190274647A1

    公开(公告)日：2019-09-12

    申请号：US16304635

    申请日：2017-10-31

    申请人： GACHON UNIVERSITY OF INDUSTRY-ACADEMIC COOPERATION FOUNDATION ,  GIL MEDICAL CENTER

    发明人： Seong-Ho SEO ,  Sang-Yoon LEE ,  Jun-Young CHUNG ,  Ji-Hye LEE

    IPC分类号： A61B6/00 ,  A61B6/03 ,  G01T1/29

    摘要： A variable PET apparatus allows structural changes of detector modules in transversal and longitudinal directions to correspond to various imaging purposes and a cross-sectional diameter of a subject while maintaining an arrangement of the detector modules to be close to a true circle. The variable PET apparatus includes: a gantry having an opening on a longitudinal axis; and detector modules supported on the gantry and arranged a predetermined distance apart from each other such that a detection ring is configured with a diameter in a circumferential direction, wherein the gantry is driven by a gantry drive member, and the detector modules are driven by a detector module drive member. According to the present invention, structural changes of the detector modules in the PET apparatus is possible to correspond to a cross-sectional diameter of a subject without additional devices, thereby improving the spatial resolution and sensitivity.