Abstract: Provided are a microfluidic chip and a method of fabricating the same. The microfluidic chip includes: a lower substrate; an upper substrate formed of a silicone resin, wherein the lower substrate and the upper substrate, bonded together, provide a channel through which a fluid can flow and a chamber to receive the fluid; and an organic thin film formed on the upper surface of the lower substrate except for portions on which the lower substrate and the upper substrate are attached to each other.

Abstract: 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.

Abstract: Provided is a method of isolating nucleic acid from cells using a single surface, wherein a compound represented by Formula 1 is bound to the surface. Also provided are an apparatus for isolation of nucleic acids, and a bead for isolating nucleic acids.

Abstract: The present invention relates to a method of isolating a nucleic acid from a microorganism cell. The method comprises contacting a nonplanar solid substrate with a cell-containing sample in a liquid medium having a pH of 3.0 to 6.0 so that the microorganism cell is bound to the nonplanar solid substrate, and lysing the microorganism cell bound to the nonplanar solid substrate. The invention also relates a device including the nonplanar solid substrate for isolating and amplifying a nucleic acid.

Abstract: Provided is a method of separating microorganisms from a sample including contacting the sample containing microorganisms with an inorganic ion exchange material such that the sample reacts with the inorganic ion exchange material, and contacting the reacted sample with a means for capturing microorganisms.

Abstract: Provided is a method of amplifying nucleic acid from a comprising: contacting a cell-containing sample with a nonplanar solid substrate in a liquid medium having a pH range of 3.0-6.0 to attach the cell to the solid substrate; washing the nonplanar solid substrate to remove materials that are not attached thereto; and performing PCR using the nucleic acid from the cell attached to the nonplanar solid substrate as a template sample to amplify nucleic acid from the cell, wherein the contacting, washing and PCR processes are performed in a single vessel.

Abstract: Provided is a method and device for separating a cell from a sample. The method comprises contacting a nonplanar solid substrate with a cell-containing sample in a liquid medium having a pH of 3.0 to 6.0.

Abstract: A method of separating microorganisms from a sample includes introducing a sample into an apparatus which controls a concentration of at least one salt, the apparatus includes a reaction chamber defined between a cation exchange membrane and an anion exchange membrane, a first electrode chamber defined between the anion exchange membrane and a first electrode, the first electrode chamber containing a first ion exchange medium, a second electrode chamber defined between the cation exchange membrane and a second electrode, the second electrode chamber containing a second ion exchange medium, applying a voltage between the first electrode and the second electrode to electrodialyze the sample in the reaction chamber and reduce the concentration of the at least one salt in the sample and allowing the sample having the reduced concentration of the at least one salt to contact a microorganism capturing means.

Abstract: This invention provides a microfluidic device comprising an inlet and an outlet which are connected with each other through a microchannel, wherein a polymerized hydrophobic porous polymer is bonded to magnetic beads and to the walls of the microchannel. The invention is further directed to methods of making and using the microfluidic device.

Abstract: A method of amplifying nucleic acid from blood, the method including performing an electrodialysis on a blood sample to reduce the ionic strength of the sample, and performing a Polymerase Chain Reaction (“PCR”) using the blood sample on which the electrodialysis is performed as a template.

Abstract: A microfluidic device for concentrating a sample including cells or viruses and lysing the cells or viruses, the device including an anode chamber including an anode electrode, a cathode chamber including a cathode electrode and an ion exchange membrane separating the anode chamber and the cathode chamber. The cathode chamber includes a solid support therein. A method of producing the microfluidic device and a method of concentrating a sample including cells or viruses and lysing the cells or viruses therein using the microfluidic device.

Abstract: Provided are a device and a method for pre-treating and injecting a liquid specimen.

Abstract: Disclosed herein are a method of fabricating a microfluidic device, and a microfluidic device fabricated by the method. The method includes coating an adhesive material on a first substrate having a fluid port to form an adhesive layer thereon, arranging a second substrate having a microstructure formed therein with the surface of the first substrate on which the adhesive layer is formed, such that the fluid port and the microstructure correspond to each other, and heating the substrates at about 50 to about 180 degrees Celsius to bind the first substrate to the second substrate.

Abstract: A device and method for manipulating particles using dielectrophoresis are disclosed. The device comprises a chamber comprising an inlet port, an outlet port, and metal post electrodes, and a power supply, wherein the metal post electrodes are arranged in at least two rows in a vertical position with respect to the flow of fluids, each row comprises at least two metal post electrodes, each odd row is wired to a metal pad through a metal line, and each even row is wired to another metal pad through a metal line, and the power supply is connected to the metal pads.

Abstract: 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.

Abstract: A microfluidic device which electrochemically regulates a pH of a fluid, and a method of regulating a pH of a fluid using the microfluidic device, include a chamber which includes a cathode formed of a metal adsorbing hydrogen gas, and an anode formed of a metal having a higher standard oxidation potential than, and does not react with, water.

Abstract: A microfluidic device for the concentration and lysis of cells or viruses and a method of concentrating and lysing cells or viruses using the microfluidic device include: magnetic beads, a reaction chamber in which the magnetic beads are accommodated and a laser source. The reaction chamber includes a plurality of electrodes which cross each other and are separated by a dielectric to generate an electric field and a vibrating part agitating the magnetic beads in the chamber. The laser source radiates a laser onto the magnetic beads in the reaction chamber.

Abstract: Provided are a primer set for amplifying a target sequence specific to Bordetella pertussis, Chlamydophila pneumoniae, Haemophilus influenzae, Klebsiella pneumoniae, Legionella pneumophila, Moraxella catarrhalis, Mycoplasma pneumoniae, Pseudomonas aeruginosa, Stapylococcus aureus, and Streptococcus pneumoniae, the primer set including at least one oligonucleotide of 10 to 100 nucleotides in length, selected from the group consisting of oligonucleotides each of which comprises a fragment of at least 10 contiguous nucleotides present in a sequence as set forth in SEQ ID NO: 1 and at least one oligonucleotides of 10 to 100 nucleotides in length, selected from the group consisting of oligonucleotides each of which comprises a fragment of at least 10 contiguous nucleotides present in a sequence as set forth in SEQ ID NO: 2; and probes specific to a specific species of the 10 bacterial species.

Abstract: 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.

Abstract: A cell lysis method in which an ionic additive and microwaves are used is provided. The cell lysis method includes: preparing a sample containing cells to be lysed; adding an ionic additive to the sample; and lysing cells in the sample by radiating microwaves onto the sample in which the ionic additive is added using a common microwave oven for a sufficient time to allow cell lysis to occur to a desired extent. According to the cell lysis method, even when a general microwave oven is used instead of expensive microwave equipment, regardless of the size of the sample, cell lysis can be rapidly performed by rapidly raising the temperature of the sample and a subsequent PCR process is not prohibited.