Department News

Professor Kim, Hyung-soo (Mechanical Engineering), Professor Yoon, Dong-ki (Chemistry / Graduate School of Nanoscience and Technology) research team develops DNA micro patch manufacturing technology

관리자 2019.07.22

<Professor Yoon Dongki, Professor Kim Hyungsoo, Researcher Park Soonmo>


Professor Kim Hyung-soo (Fluid and Interfacial Laboratory) of our department collaborated with Professor Yun Dongki of the Graduate School of Chemistry / Nanoscience and Technology (Nano Fabrication Laboratory) developed the world's first DNA-based micro patch and controlled application technology. This phenomenon is called "coffee ring effect" in which a circular shape is formed as the coffee bean dries up and is developed by applying it to the aqueous solution of DNA. The study was published online in the June 7 issue of Nature Communications. (TITLE: Microstructure arrays of DNA using topographic control)
DNA with genetic information storage function has a regular shape of double helix structure and nanometer cycle, and it is a precise structural material that cannot be realized by general synthesis method in material field. We have implemented interesting shapes such as smile patches using precise DNA synthesis and Origami technology, but have experienced difficulties in practical applications due to high material prices. To overcome this, the research team used a DNA material extracted from salmon to create a large-area micro patch structure with a well-aligned knit or ice cream cone shape that was 1,000 times cheaper than before. 
The team noted that when the DNA was dissolved in water, it became sticky with the water-phase and attracted to each other with moderate force and showed a liquid crystal phase aligned in a certain direction. The rheological properties of the DNA solution and patch It is found that the DNA structure is determined by the interaction with the surface microphone pattern. 
Professor Kim said, "Based on the rheological properties and hydrodynamic studies of soft materials, such as quantum dots and conductive polymers, as well as DNA solutions, we expect to be able to control and understand patterning and apply them as new display materials.".
This research was carried out with the support of the new research project, strategic task, multi-scale chiral structure research center and promising fusion technology Pioneer business of Ministry of Science and Technology - Korea Research Foundation.