Abstract:
An efficient and accurate method of identifying a target biomolecule in a sample by using target molecule-probe binding frequencies is disclosed.
Abstract:
A method of recovering a nucleic acid sequence using a probe map includes: aligning a probe onto a target sequence based on a result in which the probe is hybridized to the target sequence; determining a representative value representing each aligned position of the probe; and recovering a base sequence of the target sequence by using a probe map to which the determined representative values and base sequence information of the probe are mapped.
Abstract:
Provided is a field effect transistor (FET) type biosensor including a source electrode, a gate, and a drain electrode. A ligand that can bind to a side of a nucleic acid is added to the surface of the gate. In a conventional FET type biosensor, it is difficult to detect a signal within the debye length because a target nucleic acid is directly fixed to the surface of a gate of the conventional FET. However, in the present invention, this problem can be overcome and the debye length can be increased by treating the surface of a gate of an FET sensor with a ligand that can bind to a side of a nucleic acid. The ligand can be adsorbed onto the surface of the gate. In this case, the nucleic acid is adsorbed parallel to the surface of the gate, not perpendicular to the surface of the gate, thus generating an effective depletion region. In addition, hybridization efficiency can be increased because a hybridized sample can be injected into an FET sensor at high ionic strength.
Abstract:
A device for printing a droplet onto a substrate includes: a droplet generating member which is needle-shaped and comprises a receiving portion disposed vertically to receive a solution, and a discharge hole connected to the receiving portion and formed on a bottom of the receiving portion so that the solution can be discharged from the receiving portion; a substrate disposed below the droplet generating member, the substrate includes a target portion to which the droplet discharged from the discharge hole of the droplet generating member is dropped and attached; a voltage applier applying a voltage to the droplet so that the droplet can be dropped onto the target portion of the substrate; a volume measuring unit measuring the volume of the droplet; and a droplet control unit maintaining the volume of the droplet at a predetermined level based on the measured volume of the droplet.
Abstract:
An ultra small fluorescence detector capable of detecting in real time reaction undergoing in a micro chamber having a predetermined volume and disposed on a microfluid chip is provided. The fluorescence detector for detecting in real time PCR amplification undergoing in the microfluid chip having a micro chamber with a predetermined volume includes a light source generating an excitation beam, a first optical system capable of irradiating the excitation beam having a predetermined spot size to the micro chamber, a first detector, and a second optical system reflecting a fluorescent beam derived from the excitation beam having the predetermined spot size in the micro chamber to the first detector. Accordingly, the fluorescence detector is designed such that light emitted by a light source is focused between a first mirror and an objective lens. Therefore, the spot size of an excitation beam transmitted by the objective lens is largely formed so that the excitation beam can be irradiated on the whole micro chamber of the microfluid chip, thereby detecting a fluorescent beam on a broader area.
Abstract:
A bio material receiving device includes a thin film transistor (“TFT”) including a drain electrode, and a nano well accommodating a bio material. The drain electrode includes the nano well. The TFT may be a bottom gate TFT or a top gate TFT. A nano well array may include a plurality of bio material receiving devices. In a method of operating the bio material receiving device, each of the bio material receiving devices may be individually selected in the nano well array. When the bio material is accommodated in the selected bio material receiving device, a voltage is applied so that another bio material is not accommodated.
Abstract:
An apparatus for printing a biomolecular droplet onto a substrate using an electric charge concentration effect includes; an electric field forming electrode including an accommodating area in which the biomolecular droplet including micro magnetic beads is accommodated and a nozzle formed on an end of the accommodating area through which the biomolecular droplet is discharged, a substrate disposed below the electric field forming electrode, including a grounded target surface onto which the biomolecular droplet discharged from the nozzle of the electric field forming electrode is deposited, a magnet disposed below the substrate which applies a magnetic force on the micro magnetic beads, and an open circuit type voltage applying unit electrically connected to the electric field forming electrode which applies a charge to the electric field forming electrode which generates an electrical force which causes the biomolecular droplet to be ejected onto the target surface of the substrate.
Abstract:
A cell lysis device for lysing cells or viruses, comprising a cell lysis tube having a sample inlet; a pump connected to the cell lysis tube for transferring a sample into the tube; a sealing unit for reversibly sealing a specific region of the tube; and a laser source for generating a laser is provided. Further, a method of lysing cells or viruses using the cell lysis device is provided. The method comprises introducing a sample containing cells or viruses and optionally magnetic beads to the cell lysis tube through the sample inlet; transferring the sample to a specific region in the cell lysis tube by means of the pump; temporarily sealing the region of the cell lysis tube where the sample is placed with the sealing unit; irradiating the sample with the laser; removing the sealing unit from the cell lysis tube; and discharging the sample from the cell lysis tube by means of the pump.
Abstract:
A multi-channel fluorescence measuring optical system and a multi-channel fluorescence sample analyzer using the optical system are provided. The multi-channel fluorescence measuring optical system, which irradiates light onto a plurality of sample channels and detecting fluorescence radiated from samples, includes: a light source; an integrator for giving the light irradiated from the light source a uniform intensity distribution; a sample holder having a plurality of sample channels on which the samples are mounted, wherein the samples are exited by the light emitted from the integrator; and a beam splitter between the integrator and the sample holder for dividing the incident light in a predetermined ratio. Since the light intensities of fluorescence images are detected using optical fiber bundles and photodiodes, the manufacturing cost can be greatly reduced, and the optical system can be miniaturized.
Abstract:
A fluid reaction device includes a microfluidic reaction chip which accommodates a fluid, a heater, and a heat transfer facilitating layer which is interposed between the microfluidic reaction chip and the heater, the heat transfer facilitating layer has a higher thermal conductivity than air and can hold particles, wherein formation of an air layer can be prevented.