Patent application number | Description | Published |
20090005265 | METHOD 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 |
20090064859 | 3-DIMENSIONAL AIR BUBBLE TRAPPING APPARATUS AND METHOD THEREOF - A 3-dimensional air bubble trapping apparatus includes a plurality of chambers, each having an inflow and outflow channel at both ends, and which traps air bubbles in a material introduced through the inflow channel, wherein the chambers are divided into a previous chamber and a next chamber based on a moving direction of the material in the chamber, and wherein the outflow channel of the previous chamber is connected to the inflow channel of the next chamber, and wherein a face perpendicular to an outflow direction of the material in the outflow channel of the previous chamber is not disposed parallel with a face perpendicular to the outflow direction of the material in the outflow channel of the next chamber, whereby air bubbles in the material are trapped without being affected by an angle defined by a gravity direction and vibration of the apparatus. | 03-12-2009 |
20090159463 | MICROFLUIDIC 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 |
20090170119 | METHOD FOR AMPLIFYING VARIATION OF FREQUENCY OF SIGNAL IN PIEZOELECTRICAL BIOSENSOR - Provided is a method for amplifying a frequency variation of a detected signal in a biosensor that is used for detecting a biomolecule by measuring a change in frequency of an oscillating signal the change being caused by pressure a biomolecule applies to a piezoelectric substance. The method for amplifying a frequency variation of a detected signal comprises the steps of: (a) applying a sample to a probe being fixed to an upper portion of a substrate of the biosensor to allow a biomolecule in the sample to be bound to the probe; (b) applying, protein tagged with a metal particle to the biosensor to allow the protein, and the biomolecule to be bound with each other; and (c) applying a metal enhancer to the biosensor to allow the metal enhancer to be bound to the metal, particle having been bound to the protein | 07-02-2009 |
20090280509 | SURFACE ACOUSTIC WAVE IMMUNOSENSOR FOR DIAGNOSING ALLERGY DISEASE AND METHOD FOR DIAGNOSING ALLERGY DISEASE USING THE SAME - A surface acoustic wave (SAW) immunosensor for diagnosing allergy disease includes one or more SAW devices on each of which allergens derived from one allergy-causing substance are fixed and an allergen derived from another allergy-causing substance is not included, that is, allergens derived from different allergy-causing substances being fixed on different SAW devices; and a signal detector which detects an output signal from the SAW device. Also a method for diagnosing allergy disease is capable of measuring levels of allergen-specific IgE and total IgE in blood or another sample taken from a subject of diagnosis using a SAW immunosensor, the allergens being derived from various allergy-causing substances, thereby capable of effectively diagnosing allergy disease for various allergy-causing substances. | 11-12-2009 |
20100109475 | SURFACE ACOUSTIC WAVE ELEMENT, SURFACE ACOUSTIC WAVE DEVICE AND METHODS FOR MANUFACTURING THE SAME - A surface acoustic wave (“SAW”) element includes a substrate which is formed of a piezoelectric material, a plurality of first electrodes which are disposed on the substrate and separated from each other, a plurality of second electrodes which are disposed on the substrate and are separated from the first electrodes and are separated from each other, and oxide films which are disposed on the respective plurality of first electrodes and the plurality of second electrodes. | 05-06-2010 |
20100117004 | SURFACE ACOUSTIC WAVE DEVICE AND METHOD FOR SIGNAL AMPLIFICATION OF SURFACE ACOUSTIC WAVE ELEMENT - A surface acoustic wave (“SAW”) device including a SAW element, a first material, a luminescence material and a light source, and a method for signal amplification of a SAW element. The first material may be positioned on the SAW element and bound to a target material in a sample. The luminescence material may be bound to the target material. The light source may apply light to the luminescence material. The SAW device and the method for signal amplification of a SAW element using the same allow amplification of a signal of the SAW element by an electromagnetic wave generated when light is applied to the luminescence material. | 05-13-2010 |
20100231308 | SURFACE ACOUSTIC WAVE SENSOR AND SENSING METHOD USING SURFACE ACOUSTIC WAVE - A surface acoustic wave (“SAW”) sensor includes; a first signal generator which generates a first signal having a predetermined frequency bandwidth using a pseudo random sequence, a second signal generator which generates a second signal with a predetermined frequency, a signal blender which blends the first signal with the second signal to generate a blended signal having the predetermined frequency bandwidth with the predetermined frequency as a center frequency, a wave generator which generates a surface acoustic wave using the blended signal, which converts the surface acoustic wave into a third signal after the surface acoustic wave travels a predetermined distance, and which outputs the third signal, and a signal detector which detects a change in the third signal from the wave generator to sense a substance bound to the wave generator. | 09-16-2010 |
20100314967 | SURFACE ACOUSTIC WAVE SENSOR DEVICE - Provided herein is a surface acoustic wave (SAW) sensor device including a surface acoustic wave sensor and an oscillator corresponding to the surface acoustic wave sensor. A horizontal plane defined by the oscillator is inclined at a predetermined angle with respect to a horizontal plane defined by the surface acoustic wave sensor. The predetermined angle is greater than zero degrees. | 12-16-2010 |
20100319439 | SURFACE ACOUSTIC WAVE SENSOR DEVICE AND METHOD OF CONTROLLING LIQUID USING THE SAME - A surface acoustic wave sensor device includes a main body and a liquid controller disposed external to the main body. The main body includes a sample chamber, a surface acoustic wave sensor connected to the sample chamber, a first disposal chamber connected to the surface acoustic wave sensor and channels connecting the sample chamber, the surface acoustic wave sensor and the first disposal chamber. The liquid controller controls flow of a sample through the main body. | 12-23-2010 |
20110196050 | ION EXCHANGEABLE MIXTURE AND METHOD OF PRODUCING THE SAME - An ion exchangeable mixture containing a polymeric compound consisting of an ion exchange resin, an acrylamide mixture containing at least one bisacrylamide and at least one acrylamide, and a copolymer obtained by reacting the polymeric compound with the acrylamide mixture, and a method of producing the same are provided. The ion exchangeable membrane produced by using the ion exchangeable mixture has significantly smaller electric resistance than conventional ion exchangeable membranes, and has excellent selective permeability because the ion exchangeable membrane is electrically charged. The ion exchangeable membrane can be produced under very mild production conditions, and thus can be produced very easily. Furthermore, the ion exchangeable membrane can be also formed into film during a crosslinking reaction in a solvent of water, and thus is advantageous in that the ion exchangeable membrane can be freely produced into desired sizes, shapes and forms. | 08-11-2011 |
20120103832 | MICROFLUIDIC DEVICE FOR ELECTROCHEMICALLY REGULATING pH OF FLUID THEREIN AND METHOD OF REGULATING pH OF FLUID USING THE MICROFLUIDIC DEVICE - A microfluidic device for electrochemically regulating the pH of a fluid includes: an ion-exchange material; an anode chamber having a surface defined by a surface of the ion-exchange material and an anode electrode disposed along an edge of the surface of the anode chamber; and a cathode chamber having a surface defined by an opposite surface of the ion-exchange material and a cathode electrode disposed along an edge of the surface of the cathode chamber. | 05-03-2012 |
20120255871 | APPARATUS AND METHOD FOR ADJUSTING PH OF SOLUTION - A pH adjusting apparatus includes an electrolytic chip receiving a solution, an electrolytic chip loading station receiving the electrolytic chip, an input unit inputting electrolysis conditions, a control unit receiving the electrolysis conditions and controlling electrolysis performed in the electrolytic chip, and a display unit displaying the electrolysis conditions and a progress of the electrolysis. Thus, the pH of a solution can be adjusted easily and accurately, by precisely controlling a constant current, a constant voltage, and current and voltage application times, thereby enabling useful application in various biological assays such as cell lysis. Furthermore, the pH adjusting apparatus has small size and weight and can be operated for a long time after charging once due to low power consumption. | 10-11-2012 |
20120266664 | SURFACE ACOUSTIC WAVE SENSOR DEVICE AND METHOD OF CONTROLLING LIQUID USING THE SAME - A surface acoustic wave sensor device includes a main body and a liquid controller disposed external to the main body. The main body includes a sample chamber, a surface acoustic wave sensor connected to the sample chamber, a first disposal chamber connected to the surface acoustic wave sensor and channels connecting the sample chamber, the surface acoustic wave sensor and the first disposal chamber. The liquid controller controls flow of a sample through the main body. | 10-25-2012 |
20120329891 | ION EXCHANGEABLE MIXTURE AND METHOD OF PRODUCING THE SAME - An ion exchangeable mixture containing a polymeric compound consisting of an ion exchange resin, an acrylamide mixture containing at least one bisacrylamide and at least one acrylamide, and a copolymer obtained by reacting the polymeric compound with the acrylamide mixture, and a method of producing the same are provided. The ion exchangeable membrane produced by using the ion exchangeable mixture has significantly smaller electric resistance than conventional ion exchangeable membranes, and has excellent selective permeability because the ion exchangeable membrane is electrically charged. The ion exchangeable membrane can be produced under very mild production conditions, and thus can be produced very easily. Furthermore, the ion exchangeable membrane can be also formed into film during a crosslinking reaction in a solvent of water, and thus is advantageous in that the ion exchangeable membrane can be freely produced into desired sizes, shapes and forms. | 12-27-2012 |
20130224732 | METHOD FOR AMPLIFYING VARIATION OF FREQUENCY OF SIGNAL IN PIEZOELECTRICAL BIOSENSOR - Provided is a method for amplifying a frequency variation of a detected signal in a biosensor that is used for detecting a biomolecule by measuring a change in frequency of an oscillating signal, the change being caused by pressure a biomolecule applies to a piezoelectric substance. The method for amplifying a frequency variation of a detected signal comprises the steps of: (a) applying a sample to a probe being fixed to an upper portion of a substrate of the biosensor to allow a biomolecule in the sample to be bound to the probe; (b) applying protein tagged with a metal particle to the biosensor to allow the protein and the biomolecule to be bound with each other; and (c) applying a metal enhancer to the biosensor to allow the metal enhancer to be bound to the metal particle having been bound to the protein. | 08-29-2013 |