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    Fluoro-boron pyrrole liquid crystal compounds containing 8-(bisphenylethynyl)-ester group flexible multiple ring, preparation method and use thereof
    4.
    发明授权
    Fluoro-boron pyrrole liquid crystal compounds containing 8-(bisphenylethynyl)-ester group flexible multiple ring, preparation method and use thereof 有权

    公开(公告)号：US11629157B2

    公开(公告)日：2023-04-18

    申请号：US17256144

    申请日：2020-01-22

    申请人： DALIAN UNIVERSITY OF TECHNOLOGY

    发明人： Xiaolian Li ,  Rouchen Pan

    IPC分类号： C07F5/02 ,  C09K11/06 ,  C09K19/04 ,  C09K19/60

    摘要： A series of 8-(bisphenylethynyl)-ester flexible multiple ring-containing fluoroboron pyrrole liquid crystal dyes are synthesized by introducing a diphenylethynyl rigid structure at position 8 of a boron-dipyrromethene core via a Sonogashira coupling reaction, and a flexible multiple ring such as bicyclohexane, or cholesterol is connected to the biphenylethynyl via an esterification reaction. The dye compounds all have maximum emission wavelengths in methylene chloride concentrated around 525 nm, present green fluorescence, and show good dichroic colour ratios and ordered parameters in E7 liquid crystal. The liquid crystal compounds are in a liquid crystal intermediate phase within the range of 100-280° C., and may be used for manufacturing liquid crystal display products, especially as guest dyes for guest-host mode liquid crystal displays. The response time can be improved and a rapid response effect achieved when the compounds are added to E7 liquid crystal and used for a guest-host display mode.

    Haptic feedback fiber body, haptic feedback fabric and wearable device
    5.
    发明授权
    Haptic feedback fiber body, haptic feedback fabric and wearable device 有权

    公开(公告)号：US11620881B2

    公开(公告)日：2023-04-04

    申请号：US16484275

    申请日：2018-01-26

    申请人： CHUNGANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

    发明人： Seung Tae Choi

    IPC分类号： H01L41/193 ,  G08B6/00 ,  B06B1/06 ,  D01F6/12 ,  H01L41/08 ,  D03D15/00

    摘要： Provided are a haptic feedback fiber body, a haptic feedback fabric, and a wearable device. The haptic feedback fiber body can include a core fiber having a first electrode to surround the outer surface thereof, and a vibrating fiber, provided so as to intermittently contact the outer surface of the core fiber, including a second electrode on the inner surface thereof, wherein a piezoelectric polymer is provided on the outer surface of the first electrode or on the inner surface of the second electrode to generate fretting vibrations when the polymer is in close contact with the first electrode or the second electrode on which the piezoelectric polymer is disposed opposite to each other.

    Apparatus and method based on selective laser melting technique for preparing functionally gradient material
    6.
    发明授权
    Apparatus and method based on selective laser melting technique for preparing functionally gradient material 有权

    公开(公告)号：US11618085B2

    公开(公告)日：2023-04-04

    申请号：US16800688

    申请日：2020-02-25

    申请人： UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

    发明人： Baicheng Zhang ,  Lin Zhang ,  Shubin Ren ,  Mingli Qin ,  Xuanhui Qu

    IPC分类号： B33Y30/00 ,  B22F12/58 ,  B22F12/67 ,  B22F10/28 ,  B22F12/49 ,  B22F10/14

    摘要： A selective laser melting technology-based apparatus for preparing a gradient material, comprising a laser scanning array lens, and a powder storer, a powder mixer, a powder scraping plate, and a working platform that are provided in sequence from top to bottom; the powder storer is provided with two or more partitions; a bottom portion of the powder storer is provided with an outlet; the powder mixer is provided under the powder storer and is a horizontally provided rotational mixer; the powder scraping plate is disposed under the powder mixer; the working platform is provided under the powder scraping plate; the laser scanning array lens is provided on the working platform. The present invention further relates to a method for preparing a gradient material, comprising powder storing, powder scraping, powder mixing, powder laying, and printing. The method can guarantee the two-phase powder ratio in each layer of powder not change.

    Method for preparing high-functional suture yarn coated with hyaluronate and high-functional suture yarn prepared therefrom
    7.
    发明授权
    Method for preparing high-functional suture yarn coated with hyaluronate and high-functional suture yarn prepared therefrom 有权

    公开(公告)号：US11617813B2

    公开(公告)日：2023-04-04

    申请号：US16780730

    申请日：2020-02-03

    申请人： JINWOO BIO CO., LTD.

    发明人： Dong Keon Kweon ,  Seung Hyeon Park

    IPC分类号： A61L17/14 ,  A61L17/04 ,  A61L17/10 ,  C08L5/08

    摘要： Provided is a method of manufacturing a hyaluronate-coated high-functional suture and a high-functional suture manufactured thereby, and more particularly to a method of manufacturing a high-functional suture and a high-functional suture manufactured thereby, wherein a suture for internal and external surgery derived from a conventional chemical synthetic material is coated with a hyaluronate as a biocompatible material, thus improving biocompatibility, functionality and ease of use. Upon application of the hyaluronate-coated suture of the invention to the human body, the hyaluronate applied on the surface of the suture is rapidly swollen by body fluids and can thus function as a lubricant, thus being convenient to use by a surgical doctor and reducing the pain of a patient and maximizing the functions of skin filling or skin regeneration in the body.

    Method and system for distance measurement based on binocular camera, device and computer-readable storage medium
    8.
    发明授权
    Method and system for distance measurement based on binocular camera, device and computer-readable storage medium 有权

    公开(公告)号：US11615548B2

    公开(公告)日：2023-03-28

    申请号：US17124028

    申请日：2020-12-16

    申请人： Beijing Smarter Eye Technology Co. Ltd.

    发明人： Feng Cui ,  Zhao Sun ,  Yongcai Liu ,  Shanshan Pei ,  Jian Li

    IPC分类号： G06T7/593 ,  G06T7/80 ,  H04N13/204 ,  H04N13/00

    摘要： The present disclosure provides a method for distance measurement based on a binocular camera, a system for distance measurement based on a binocular camera, a device and a computer-readable storage medium. The method includes: taking N images of a distance measurement marker placed at each of Z positions in a depth direction of the binocular camera; calculating an average disparity of the distance measurement marker at the middle position, the left side position and the right side position at each of the Z positions; calculating a distance measurement value at each of the Z positions in the depth direction; calculating a distance measurement error value at the middle position, the left side position and the right side position at each of the Z positions, and acquiring a total error cost function; and calculating extrinsic parameters, so as to acquire a distance measurement result in the depth direction.

    Composite porous membrane and preparation method therefor and use thereof
    9.
    发明授权
    Composite porous membrane and preparation method therefor and use thereof 有权

    公开(公告)号：US11603443B2

    公开(公告)日：2023-03-14

    申请号：US16640391

    申请日：2018-08-24

    申请人： BEIJING NORMAL UNIVERSITY

    发明人： Jianjun Zhou ,  Lin Li ,  Zhiyu Hu

    IPC分类号： B01D53/22 ,  C08J7/043 ,  B01D69/12 ,  B01D71/26 ,  B01D71/34 ,  B01D71/48 ,  H01M50/491 ,  H01M50/443 ,  H01M50/489 ,  B01D67/00 ,  H01M50/474

    摘要： A composite porous membrane contains at least one porous base layer and at least one uniaxially stretched coating layer located on at least one side surface of the porous base layer. For example, the composite porous membrane comprises at least one porous base layer and at least one nanofiber-like non-polyolefin polymer porous layer oriented along the transverse stretching direction of the composite porous membrane and located on one or two side surfaces of the porous base layer, or the composite porous membrane comprises a biaxially stretched polypropylene porous base layer and a uniaxially stretched coating layer located on at least one side surface of the porous base layer. The composite porous membrane is coated with a coating solution prior to transversely stretching. The nanofiber-like non-polyolefin polymer porous layer may reduce cracking of the composite porous membrane in the machine direction.