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    PARTICLE MANIPULATION
    92.
    发明申请
    PARTICLE MANIPULATION 审中-公开

    公开(公告)号：US20190160463A1

    公开(公告)日：2019-05-30

    申请号：US16091813

    申请日：2017-07-19

    Applicant: SINGAPORE UNIVERSITY OF TECHNOLOGY AND DESIGN

    Inventor： Ye Ai ,  Zhichao Ma

    IPC: B01L3/00

    Abstract: The present invention relates to the manipulation and, more particularly, to the sorting of particles. Still more particularly, the present invention relates to the use of acoustic waves, including surface acoustic waves, for the manipulation and sorting of particles. In an example, the present invention may be used for the sorting of cells. In an aspect of the invention, there is provided a device for manipulating a particle in a fluid suspension, the device comprising: (a) a substrate having a surface; (b) an acoustic source configured to generate and deliver an acoustic wave within a region of the substrate surface; and (c) a pillar disposed on the surface of the substrate and the pillar is configured to receive a channel, the channel configured to receive the fluid suspension, wherein the acoustic wave delivered within the region of the substrate surface is delivered to the fluid suspension in the channel through the pillar. A method using the device of the invention is also disclosed.

    BORON REMOVAL AND MEASUREMENT IN AQUEOUS SOLUTIONS
    95.
    发明申请
    BORON REMOVAL AND MEASUREMENT IN AQUEOUS SOLUTIONS 审中-公开

    公开(公告)号：US20190009246A1

    公开(公告)日：2019-01-10

    申请号：US16062625

    申请日：2016-12-13

    Applicant: SINGAPORE UNIVERSITY OF TECHNOLOGY AND DESIGN

    Inventor： Fuming CHEN ,  Hui Ying YANG

    IPC: B01J20/20 ,  B01J20/30 ,  B01J20/32 ,  B01J20/34 ,  C02F1/28 ,  G01N27/06

    Abstract: In one embodiment, the invention relates to a carbon-based boron removal medium with hydroxyl groups and amine group, and in particular, to a method for forming the carbon-based boron removal medium. In a specific embodiment, nitrogen-doped (“N-doped”) graphene oxide is synthesized by a simple two-step process: (1) oxidation of graphite to graphene oxide, and (2) nitrogen-doping (“N-doping”) the graphene oxide to form the amine group. The resultant N-doped graphene oxide can efficiently remove boron from aqueous solutions. In another embodiment, a method of sensing or detecting the presence of boron in an aqueous solution by using a boron sensing medium comprises at least two hydroxyl groups and at least one pyridinic nitrogen or pyrrolic nitrogen or quaternary nitrogen (i.e. pyridoxine, in particular vitamin B6). The boron ions in the solution would form a highly ionized complex, which can cause significant increase in electrical conductivity of the solution, which can then be used to measure the concentration of boron in said solution.

    MICROFLUIDIC PARTICLE MANIPULATION
    96.
    发明申请
    MICROFLUIDIC PARTICLE MANIPULATION 审中-公开

    公开(公告)号：US20180369816A1

    公开(公告)日：2018-12-27

    申请号：US15775717

    申请日：2016-11-11

    Applicant: Singapore University of Technology and Design

    Inventor： Ye Ai ,  David John Collins

    IPC: B01L3/00 ,  H01L41/187

    CPC classification number: B01L3/502761 ,  B01L3/502776 ,  B01L2200/0652 ,  B01L2300/0816 ,  B01L2300/0864 ,  B01L2400/0436 ,  H01L41/187

    Abstract: The present invention relates to the use of acoustic waves for the manipulation and sorting of particles and cells. In an embodiment, there is provided a microfluidic device for manipulating a particle in a fluid suspension, the device comprising: (a) a substrate; (b) a channel defined in the substrate, the channel having an inlet for receiving the fluid suspension and an outlet for discharging the fluid suspension; and (c) an acoustic source configured to deliver a travelling surface acoustic wave transverse the flow of the fluid suspension in the channel, wherein the acoustic source is an interdigital transducer (IDT), the IDT comprises a plurality of concentric circular arcs having a tapered end directed at the channel, and the tapered end has an aperture of between 4 μm and 150 μm. In an alternative embodiment, the device comprises a second channel disposed intermediate the first channel and the acoustic source wherein the first and second channels are connected by a pumping channel.

    Optical devices and methods for fabricating an optical device
    99.
    发明授权
    Optical devices and methods for fabricating an optical device 有权

    公开(公告)号：US09971091B2

    公开(公告)日：2018-05-15

    申请号：US15461647

    申请日：2017-03-17

    Applicant: Singapore University Of Technology And Design

    Inventor： Dawn Tan

    IPC: G02B6/12 ,  G02B6/26 ,  G02B6/125

    CPC classification number: G02B6/26 ,  G02B6/12016 ,  G02B6/12021 ,  G02B6/125 ,  G02B6/13 ,  G02B2006/1209 ,  G02B2006/12107 ,  G02B2006/12109 ,  G02B2006/12164

    Abstract: According to various embodiments, there is provided an optical device including: a waveguide configured to propagate an electromagnetic wave, the waveguide including a first grating and further including a second grating; a first further waveguide including a first further grating, the first further waveguide having a first width, wherein the first further grating is coupled to the first grating to form a first pair of coupled gratings, wherein a grating period of the first further grating is at least substantially equal to a grating period of the first grating; a second further waveguide including a second further grating, the second further waveguide having a second width, wherein the second further grating is coupled to the second grating to form a second pair of coupled gratings, wherein a grating period of the second further grating is at least substantially equal to a grating period of the second grating.

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