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公开(公告)号：US20230050510A1
公开(公告)日：2023-02-16
申请号：US17792344
申请日：2020-01-30
Inventor： Jung Ho JE , Seung Soo OH , Moon Jung YONG , Un YANG
Abstract: Provided is a method of fabricating a core-shell structured nanowire on a tip of an optical fiber, on a substrate, or any position on other target objects, and a nanowire fabricated by the method. The nanowire fabricated by the method of the present invention may be used for a drug delivery system, a sensor, an optical waveguide, and the like.
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公开(公告)号：US20220244278A1
公开(公告)日：2022-08-04
申请号：US17588571
申请日：2022-01-31
Inventor： Jung Ho JE , Seung Soo OH , Moon Jung YONG , Un YANG , Byung Hwa KANG
Abstract: Provided is a method and apparatus for measuring pH in single cells, and a method of manufacturing a nanoprobe therefor. The apparatus for measuring pH in a single cell comprises: a nanoprobe formed by labeling a pH-responsive fluorescent material to a nanowire grown on a tapered tip of an optical fiber; a manipulator capable of regulating a three-dimensional movement of the nanoprobe to insert the nanoprobe into a single living cell; a light source for applying light to the optical fiber; an optical coupler for connecting the optical fiber with another optical fiber to transmit the light incident through the optical fiber to the nanoprobe and to transmit a fluorescence signal obtained from the nanoprobe through the another optical fiber; and a spectrometer for obtaining a pH value by receiving the fluorescence signal through the another optical fiber and analyzing spectral data from the fluorescence signal.
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公开(公告)号：US20220250344A1
公开(公告)日：2022-08-11
申请号：US17306220
申请日：2021-05-03
Inventor： Jung Ho JE , Un YANG , Seung Soo OH , Moon Jung YONG , Byung Hwa KANG
Abstract: Provided is a method of forming a micro/nanowire having a nanometer- to micrometer-sized diameter at predetermined positions of an object. The method includes: preparing a micro/nanopipette having a tip with an inner diameter which is substantially the same as the diameter of the micro/nanowire to be formed; filling the micro/nanopipette with a solution containing a micro/nanowire-forming material; brining the solution into contact with the object through the tip of the micro/nanopipette; and pulling the micro/nanopipette from the object at a pulling speed lower than or equal to a predetermined critical speed (νc) to obtain a micro/nanowire having substantially the same diameter as the inner diameter of the micro/nanopipette tip.
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公开(公告)号：US20220242726A1
公开(公告)日：2022-08-04
申请号：US17587922
申请日：2022-01-28
Inventor： Jung Ho JE , Seung Soo OH , Un YANG , Moon Jung YONG , Byung Hwa KANG
Abstract: Provided is a method of fabricating a micro/nanowire having a nanometer- to micrometer-sized diameter at predetermined positions on an object. The method comprises: preparing a micro/nanopipette having a tip with an inner diameter (dpt) which is substantially the same as the diameter of the micro/nanowire to be fabricated; filling the micro/nanopipette with a solution containing a micro/nanowire-forming material; bringing the solution into contact with the object through the tip of the micro/nanopipette; and pulling the micro/nanopipette apart from the object at a pulling speed lower than or equal to a predetermined critical pulling speed (vc) to fabricate a micro/nanowire having substantially the same diameter as the inner diameter of the micro/nanopipette tip (dpt). The critical pulling speed (vc) is defined by a maximum limit of the pulling speed at which the micro/nanowire to be fabricated has the same diameter as the inner diameter of the micro/nanopipette tip (dpt).
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