Postech Academy-industry Foundation

Chung Ang University Industry Academic Cooperation

Tai-Hun Kwon

Dong-Sung Kim

Dong Sung Kim

Bong-Kee Lee

Sung-Jae Park

Kyoung-Je Cha

Provided is a method for fabricating a microstructure. The method includes disposing an X-ray mask on photosensitive material and exposing the photosensitive material by radiating X-rays to the photosensitive material, etching the exposed photosensitive material, forming a mold having a micro-pattern by filing the etched photosensitive material with metal, forming a mold module by combining a plurality of molds, and forming a microstructure using the mold module.

Method for manufacturing micro structure using X-ray exposure

A droplet mixing apparatus can be applied for use with a variety of liquids, can provide a mixing speed of hundreds of nl/s by adjusting an opening/closing time of a solenoid valve, can effectively mix droplets, and can reduce a reaction time when applied to clinical appliances that utilize expensive liquids. The droplet mixing apparatus includes a plurality of pressure containers storing liquids that are to be dispensed, a plurality of solenoid valves that are respectively connected to the pressure containers to dispense the liquids fed from the pressure containers into a mixing container, and a control unit that controls the solenoid valves such that the solenoid valves are either simultaneously opened or alternately opened and closed.

Droplet mixing apparatus and droplet mixing method

The present invention relates to a pump and pumping system for a microfluidic lab-on-a-chip, and a fabricating method thereof. An exemplary embodiment of the present invention provides a method of fabricating a pump for microfluidic lab-on-a-chips, the method including: infiltrating PDMS (polydimethylsiloxane) solution into a porous lump of water-soluble material; performing soft baking of the porous lump of water-soluble material containing the PDMS solution; and dissolving the porous lump of water-soluble material via water to obtain a porous PDMS structure.

Pump and pumping system for microfluidic lab-on-a-chip using porous structure and fabricating method thereof

The present invention is directed to a microfluidic biochip based on an agglutination reaction that is frequently used in qualitative typing in the diagnostic medicine field by realizing a specimen inlet, a reagent inlet, a split microchannel, transfer microchannels, a chaos micromixer, a reaction microchamber, a microfilter, a passive microvalve, and an outlet on a plastic microchip. Particularly, the biochip of the present invention is characterized in that portability thereof is superior and a small amount (about 1 &#x3bc;l) of each of a specimen and a reagent is used. In addition, the biochip of the present invention can be cheaply made through conventional photolithography, electroplating, injection molding, and bonding. Therefore, by utilizing the microfluidic biochip for blood typing according to the present invention, a point-of-care diagnosis for performing blood typing based on an agglutination reaction at any place becomes possible.

Growing community of inventors

Pohang-si, South Korea

Tai-Hun Kwon