Scientists turn tiny “defects” into a 5.5x heat transfer boost
Engineers at KAIST have developed an ultrathin polymer coating that significantly improves heat transfer efficiency by optimizing how water droplets form and detach from surfaces. This technology could enhance the performance of power plants, desalination systems, and electronic cooling devices.
Why it matters
Improving heat transfer efficiency is a key factor in reducing energy consumption and increasing the lifespan of high-performance electronic hardware.
Researchers have developed a new surface coating that can increase condensation heat transfer performance by as much as 5.5 times compared with conventional copper surfaces. The technology works by helping water droplets form more easily and detach more quickly, a combination that could improve energy efficiency in power plants and desalination facilities while also enhancing the cooling of electronic devices.
KAIST (President Choongsik Bae) announced on August 23 that a joint team led by Professor Youngsuk Nam from the Department of Mechanical Engineering and Professor Sung Gap Im from the Department of Chemical and Biomolecular Engineering created the technology by carefully controlling the thickness and structure of an ultrathin polymer coating. The coating encourages more droplets to appear as water vapor condenses while also making it easier for those droplets to leave the surface.
Why Condensation Matters for Heat Transfer
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