Patents by Inventor Yukeun Eugene Pak

Yukeun Eugene Pak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9412900
    Abstract: Example embodiments relate to a green-light emitting device including a quaternary quantum well on a vicinal c-plane. The light-emitting device includes a substrate having a vicinal c-plane surface and a light-emitting layer on the vicinal c-plane surface of the substrate. The light-emitting layer includes a quantum well layer of AlxInyGa1-x-yN and quantum barrier layers of InzGa1-zN disposed on and under the quantum well layer respectively, and 0<x<1, 0<y<1, and 0<z<1.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: August 9, 2016
    Assignees: AICT (Advanced Institutes of Convergence Technology), Samsung Electronics Co., Ltd.
    Inventors: Yong-Hee Cho, Sungjin Kim, Munbo Shim, Yukeun Eugene Pak
  • Publication number: 20160056328
    Abstract: Example embodiments relate to a green-light emitting device including a quaternary quantum well on a vicinal c-plane. The light-emitting device includes a substrate having a vicinal c-plane surface and a light-emitting layer on the vicinal c-plane surface of the substrate. The light-emitting layer includes a quantum well layer of AlxInyGa1-x-yN and quantum barrier layers of InzGa1-zN disposed on and under the quantum well layer respectively, and 0<x<1, 0<y<1, and 0<z<1.
    Type: Application
    Filed: January 22, 2015
    Publication date: February 25, 2016
    Applicant: AICT (Advanced Institutes of Convergence Technology)
    Inventors: Yong-Hee CHO, Sungjin KIM, Munbo SHIM, Yukeun Eugene PAK
  • Patent number: 6913982
    Abstract: A probe of a scanning probe microscope (SPM) having a field-effect transistor (FET) structure at the tip of the probe, and a method of fabricating the probe are provided. The SPM probe having a source, channel, and drain is formed by etching a single crystalline silicon substrate into a V-shaped groove and doping the etching sloping sides at one end of the V-shaped groove with impurities.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: July 5, 2005
    Inventors: Geunbae Lim, Yukeun Eugene Pak, Jong Up Jeon, Hyunjung Shin, Young Kuk
  • Publication number: 20030134267
    Abstract: Provided is a sensor for detecting a biomolecule, and particularly, a sensor for detecting a biomolecule, including (a) a substrate; and (b) a plurality of carbon nanotubes which are arranged on the substrate and provide a binding site for a receptor for a target biomolecule. With the biomolecular sensor, a various kinds of disease-associated biomolecules can be detected simultaneously, accurately and quickly.
    Type: Application
    Filed: September 27, 2002
    Publication date: July 17, 2003
    Inventors: Seong-Ho Kang, Yukeun Eugene Pak, Won-Bong Choi
  • Publication number: 20030119034
    Abstract: A biochip and a method for separating a target substance contained in a sample on the biochip are disclosed. The biochip comprises a substrate, a sample loading portion disposed on the substrate, a channel in fluid communication with the sample loading portion, and carbon nanotubes arrayed in intervals in the channel. The sample is loaded on the sample loading portion and flowed through the channel. The target substance is selectively separated from the sample according to the interval sizes between the carbon nanotubes. According to the present invention, various substances in a sample may be easily separated or filtered by flowing through the channel having the carbon nanotubes, and thus, sample contamination and/or experimental error are reduced.
    Type: Application
    Filed: September 25, 2002
    Publication date: June 26, 2003
    Inventors: Seong-ho Kang, Yukeun Eugene Pak, Won-bong Choi
  • Publication number: 20030107058
    Abstract: A probe of a scanning probe microscope (SPM) having a field-effect transistor (FET) structure at the tip of the probe, and a method of fabricating the probe are provided. The SPM probe having a source, channel, and drain is formed by etching a single crystalline silicon substrate into a V-shaped groove and doping the etching sloping sides at one end of the V-shaped groove with impurities.
    Type: Application
    Filed: January 2, 2003
    Publication date: June 12, 2003
    Inventors: Geunbae Lim, Yukeun Eugene Pak, Jong Up Jeon, Hyunjung Shin, Young Kuk
  • Patent number: 6521921
    Abstract: A probe of a scanning probe microscope (SPM) having a field-effect transistor (FET) structure at the tip of the probe, and a method of fabricating the probe are provided. The SPM prove having a source, channel and drain is formed by etching a single crystalline silicon substrate into a V-shaped groove and doping the etching sloping sides at one end of the V-shaped groove with impurities.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: February 18, 2003
    Assignee: Samsung Electronics Co., LTD
    Inventors: Geunbae Lim, Yukeun Eugene Pak, Jong Up Jeon, Hyunjung Shin, Young Kuk
  • Patent number: 6443222
    Abstract: A cooling device using a capillary pumped loop (CPL), including a lower board having a looped groove formed on the upper surface, an upper board combined with the upper surface of the lower board to cover the groove, so that the flow path of a working fluid is provided, an evaporator which is provided on the flow path, and has a plurality of fine evaporating fins incorporated into the upper or lower board, and a condenser which is provided on the flow path at a predetermined distance apart from the evaporator, and has a plurality of fine condensing fins incorporated into the upper or lower board. Accordingly, a thin and small cooling device capable of performing cooling without external power can be obtained.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: September 3, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hayong Yun, Geunbae Lim, Jung Hyun Lee, Yukeun Eugene Pak
  • Patent number: 6425439
    Abstract: A cooling device with micro cooling fins is provided. The cooling device includes a substrate, a plurality of vibrating type cooling fins extending from the substrate, and a blast fan for ventilating the substrate to cool the substrate and the vibrating type cooling fins and for causing the vibrating type cooling fins to vibrate. Accordingly, micro cooling fins formed on the surface of a substrate change the flowing path of the air and improve the performance of heat transfer near the surface of the substrate due to their vibration. In other words, the resistance to heat transfer is decreased and the performance of heat transfer is improved by disturbing the formation of a heat boundary layer, which is formed on a smooth surface. Since the cooling device provides improved heat transfer performance compared to an existing cooling device, an area and volume for heat transfer can be decreased so that the cooling device can be miniaturized.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: July 30, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Geunbae Lim, Hayong Yun, Jung Hyun Lee, Yukeun Eugene Pak, Jung-sang Ko, Sung-jin Kim
  • Publication number: 20020056543
    Abstract: A cooling device with micro cooling fins is provided. The cooling device includes a substrate, a plurality of vibrating type cooling fins extending from the substrate, and a blast fan for ventilating the substrate to cool the substrate and the vibrating type cooling fins and for causing the vibrating type cooling fins to vibrate. Accordingly, micro cooling fins formed on the surface of a substrate change the flowing path of the air and improve the performance of heat transfer near the surface of the substrate due to their vibration. In other words, the resistance to heat transfer is decreased and the performance of heat transfer is improved by disturbing the formation of a heat boundary layer, which is formed on a smooth surface. Since the cooling device provides improved heat transfer performance compared to an existing cooling device, an area and volume for heat transfer can be decreased so that the cooling device can be miniaturized.
    Type: Application
    Filed: December 31, 2001
    Publication date: May 16, 2002
    Inventors: Geunbae Lim, Hayong Yun, Jung Hyun Lee, Yukeun Eugene Pak, Jung-sang Ko, Sung-Jin Kim
  • Publication number: 20020008304
    Abstract: A probe of a scanning probe microscope (SPM) having a field-effect transistor (FET) structure at the tip of the probe, and a method of fabricating the probe are provided. The SPM prove having a source, channel and drain is formed by etching a single crystalline silicon substrate into a V-shaped groove and doping the etching sloping sides at one end of the V-shaped groove with impurities.
    Type: Application
    Filed: May 8, 2001
    Publication date: January 24, 2002
    Inventors: Gunbae Lim, Yukeun Eugene Pak, Jong Up Jeon, Hyunjung Shin, Young Kuk
  • Patent number: 6334480
    Abstract: A cooling device with micro cooling fins is provided. The cooling device includes a substrate, a plurality of vibrating type cooling fins extending from the substrate, and a blast fan for ventilating the substrate to cool the substrate and the vibrating type cooling fins and for causing the vibrating type cooling fins to vibrate. Accordingly, micro cooling fins formed on the surface of a substrate change the flowing path of the air and improve the performance of heat transfer near the surface of the substrate due to their vibration. In other words, the resistance to heat transfer is decreased and the performance of heat transfer is improved by disturbing the formation of a heat boundary layer, which is formed on a smooth surface. Since the cooling device provides improved heat transfer performance compared to an existing cooling device, an area and volume for heat transfer can be decreased so that the cooling device can be miniaturized.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: January 1, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Geunbae Lim, Hayong Yun, Jung Hyun Lee, Yukeun Eugene Pak, Jung-sang Ko, Sung-jin Kim