Abstract:
PURPOSE: A microfluidic device applied to a biochip is provided to mix microfluid by disposing hot wires in a reaction chamber to form layers and heating or cooling stored fluids. CONSTITUTION: The microfluidic device for mixing microfluid comprises a first flow channel delivering a first fluid(106); a second flow channel delivering a second fluid(108); a reaction chamber connected to ends of the first and second flow channels and having hot wires(104) for heating the inside; and a part for stopping flow connected to end of the reaction chamber so as to prevent the first and second fluids from moving. When the first and second fluids meet in the reaction chamber and form layers, the first and second fluids are heated or cooled using the hot wires to generate the density difference, thereby mixing the first and second fluids by gravity.
Abstract:
PURPOSE: A fluorescence detecting device for detecting biomolecule using amorphous-silicon thin film transistor and a method for detecting the fluorescence using the same are provided, thereby reducing the size and costs of DNA chip because optical devices are not used, and requiring no fluorescence stimulating light blocking filter by using a transparent substrate. CONSTITUTION: A fluorescence detecting device for detecting biomolecule using amorphous-silicon thin film transistor comprises a first substrate with a probe biomolecule; a transparent substrate(102) having a first domain(I), a second domain(II) and a third domain(III), and having a first surface(102a) where a light is irradiated and a second surface(102b) arranged to face the first substrate; a light thin film transistor(TFToptic) producing electric charge responding to the fluorescence produced from the biomolecule on the second surface(102b) and positioned in the first domain(I); a capacity(CAP) storing the electric charge produced from the light thin film transistor(TFToptic) and positioned in parallel to the light thin film transistor(TFToptic) in the second domain(II); and a transfer thin film transistor(TFTtrans) transferring the electric charge to an additional analysis system and positioned in parallel to the capacity(CAP) in the third domain(III).