A research team from the Department of Robotics and Mechatronics Engineering at DGIST, led by Professor Bonghoon Kim, has developed a “3D Smart Energy Device” with dual-function reversible heating and cooling capabilities.
The team collaborated with Professor Bongjae Lee from KAIST’s Department of Mechanical Engineering and Professor Heon Lee from Korea University’s Department of Materials Science and Engineering. Their innovative device was officially recognized for its excellence and practicality through its selection as the cover article of the international journal Advanced Materials.
Heating and cooling account for approximately 50% of the global energy consumption, contributing significantly to environmental problems such as global warming and air pollution. In response, solar absorption and radiative cooling devices, which harness the sun and outdoor air as heat and cold sources, are gaining attention as eco-friendly and sustainable solutions. While various devices have been developed, many are limited in function, focusing solely on heating or cooling, and large-scale systems lack adjustability.
To address these limitations, Prof. Kim’s team created a “3D Smart Energy Device” that integrates reversible heating and cooling functions in a single device. The device operates on a unique mechanism: when the 3D structure opens through a mechanical peeling process, the lower layer—made of silicone elastomer and silver—is exposed to generate radiative cooling. When the structure closes, the surface coated with black paint absorbs solar heat, thus producing heating.
To read more, click here.