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Chang-Eun Yoo, Seoul KR

Chang-Eun Yoo, Seoul KR

Patent application numberDescriptionPublished
20080199930METHOD AND APPARATUS FOR THE RAPID DISRUPTION OF CELLS OR VIRUSES USING MICRO BEADS AND LASER - A method and apparatus for rapid disruption of cells or viruses using beads and a laser are provided. According to the method and apparatus for rapid disruption of cells or viruses using beads and a laser, cell lysis within 40 seconds is possible, the apparatus can be miniaturized using a laser diode, a DNA purification step can be directly performed after a disruption of cells or viruses, and a solution containing DNA can be transferred to a subsequent step after cell debris and beads to which inhibitors of a subsequent reaction are attached are removed with an electromagnet. In addition, by means of the cell lysis chip, an evaporation problem is solved, vibrations can be efficiently transferred to cells through magnetic beads, a microfluidics problem on a rough surface is solved by hydrophobically treating the inner surface of the chip, and the cell lysis chip can be applied to LOC.08-21-2008
20090005265METHOD OF ISOLATING NUCLEIC ACID USING MATERIAL POSITIVELY CHARGED AT FIRST PH AND CONTAINING AMINO GROUP AND CARBOXYL GROUP - A method of isolating nucleic acid from a sample containing nucleic acid is provided. The method includes contacting the sample with a bifunctional material that contains an amino group and a carboxyl group and is positively charged at a first pH to allow binding of the nucleic acid to the bifunctional material; and extracting the nucleic acid at a second pH higher than the first pH from the complex.01-01-2009
20090012302METHOD OF ISOLATING A NUCLEIC ACID USING A MATERIAL CONTAINING AN AMINO GROUP AND A CARBOXYL GROUP AND POSITIVELY CHARGED AT A FIRST PH AND A SOLID MATERIAL FOR NUCLEIC ACID ISOLATION USED FOR THE METHOD - Provided are a method of isolating a nucleic acid from a sample and a solid material for isolating the nucleic acid which can be used for the above method. The method includes contacting the sample with a bifunctional material containing an amino group and a carboxyl group at a first pH to bind the nucleic acid to the bifunctional material, the bifunctional material being positively charged at the first pH; and releasing the nucleic acid at a second pH which is higher than the first pH.01-08-2009
20090093380Method of manufacturing polymer array by coating photosensitizer - Provided is a method of manufacturing a polymer array by photolithography in which a molecule containing a photolabile protecting group is reacted with a surface of a substrate, and then a photosensitizer is coated on the surface of the substrate together with a coating material and the resulting substrate is exposed to light to perform a photochemical reaction. Even by using conventional semiconductor equipment and compounds without separately fabricating light exposure equipment or synthesizing a compound, a polymer array may be effectively manufactured by photolithography with lower exposure energy (shorter period of time).04-09-2009
20090153130FIELD EFFECT TRANSISTOR-BASED BIOSENSOR WITH INORGANIC FILM, METHOD OF MANUFACTURING THE BIOSENSOR, AND METHOD OF DETECTING BIOMOLECULE USING THE BIOSENSOR - Provided is a Field-Effect Transistor (FET)-based biosensor including: a substrate; a source and a drain, disposed on the substrate, having opposite polarity to the substrate; a gate, disposed on the substrate, contacting the source and the drain; and an inorganic film capable of binding with a biomolecule, disposed on a surface of the gate. A method of manufacturing the FET-based biosensor and a method of detecting a biomolecule using the FET-based biosensor is also provided. The FET-based biosensor can be manufactured using a semiconductor fabrication process without performing an additional process. Therefore, the inorganic film can be selectively deposited on a surface of a specific gate of a single FET, or on the surfaces of some gates of a plurality of FETs using patterning. Furthermore, the FET-based biosensor can be used to effectively detect trace amounts of a target biomolecule in a sample.06-18-2009
20090159463MICROFLUIDIC DEVICE COMPRISING ELECTROLYSIS DEVICE FOR CELL LYSIS AND METHOD FOR ELECTROCHEMICALLY LYSING CELLS USING THE SAME - Provided are a microfluidic device including an electrolysis device for cell lysis which includes an anode chamber, a cathode chamber and a separator, in which the separator is installed between the anode chamber and the cathode chamber, the anode chamber includes an inlet and an outlet for an anode chamber solution and an electrode, and the cathode chamber includes an inlet and an outlet for a cathode chamber solution and an electrode, and a method of electrochemically lysing cells using the same.06-25-2009
20090176899METHOD OF FORMING FILTER IN FLUID FLOW PATH IN MICROFLUIDIC DEVICE - A method for forming a filter in a fluid flow path in a microfluidic device is provided. The method includes introducing a photopolymerization reaction solution into the microfluidic device; and performing polymerization of photopolymerization reaction solution to form a filter in the fluid flow path in a microfluidic device.07-09-2009
20100261621MICROARRAY SUBSTRATE, METHOD OF USE, AND PRODUCTS COMPRISING THE MICROARRAY SUBSTRATE - Provided are a microarray substrate comprising a solid substrate coated with a chemical having a functional residue represented by Formula 1 or 2 below, a method of analyzing a biomolecule using the microarray substrate, and a lab-on-a-chip comprising the microarray substrate:10-14-2010

Patent applications by Chang-Eun Yoo, Seoul KR