Welcome to Thermal Radiation (TRAD) Laboratory in the Department of Mechanical Engineering at KAIST.

Radiation heat transfer is critical for solar energy utilization, building thermal management, and high-temperature thermal systems. Recent advancement in micro/nanofabrication techniques has enabled the fabrication of novel structures with engineered radiative properties. Ability to tailor radiative properties is a direct result of the interaction between electromagnetic waves and surface nano/micro structures in the near-field regime (i.e., at the length scale comparable to the characteristic wavelength). It has been shown that near-field effects can lead to the realization of new technologies including subwavelength heating sources, polariton-assisted nanomanufacturing, and biomedical sensors. Particularly, near-field thermal radiation has been intensively investigated for potential applications such as a highly sensitive thermal microscopy and a near-field thermophotovoltaic energy conversion system. To facilitate these applications, it is crucial to fundamentally understand the radiative transfer at the nanometer scale.

Ultimate Goal of TRAD Lab is to make a significant impact on future applications of nanoscale thermal radiation for energy conversion and utilization. 

We conduct fundamental research on the light-matter interaction at nanometer scales, especially for photon tunneling and electric/magnetic resonance phenomena, and employ nanotechnology to control thermal radiative transfer per our needs. 

The research interest of TRAD Lab includes: 
  • Near-Field Thermal Radiation for Thermophotovoltaic Energy Conversion
  • Electric/Magnetic Metamaterials for Solar Energy Harvesting
  • Radiation Thermometry at Extreme Conditions