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Sam Sukgoo Yoon
Name
Sam Sukgoo Yoon | Associate Professor
Tel
+82-2-3290-3376
Fax
+82-2-929-3861
E-mail
skyoon@korea.ac.kr
address
407, School of Mechanical Engineering, Korea University, Anamdong, 5-Ga, Sungbuk-Gu, Seoul, Korea, 136-713
Education
Feb. 1997 B.S in Mechanical Engineering, Colorado School of Mines, Golden, CO
Aug. 1999 M.S in Aeronautics & Astronautics, Purdue University, W. Laf., IN
Dec. 2002 Ph.D in Aeronautics & Astronautics, Purdue University, W. Laf. IN
Lab.
Solar Cell & Aerosol Science Lab.
Si Seed Particle Production (FBR) (1st Gen. poly-crystalling solar cell)
  • <1st Gen. Solar Cell:>
  • We are interested in generating low-cost poly-silicon granular via fluidized-bed reactor (FBR). Reactor-grown granular is transformed/melted into ingots which are sliced into 99.999999% pure silicon wafers.
  • Understanding the two-phase flow physics inside the FBR via modeling and small-scale experiment efforts are crucial to design the optimized FBR system.
Solar Cell Spray Coating (2nd Gen. thin film CIGS solar cell coating)
  • <2nd Gen. Solar Cell: Thin Film>
  • We are interested in depositing nano-particles onto molybdenum substrate for thin-film layer construction, particularly CIGS (Cu, In, Ga, Se) and CaTe.
  • CIGS and CaTe are substantially cheater (than the 1st gen. solar cell) due to their low material and fabrication cost. Their direct bandgap enables strong light absorption, enough to absorb most part of the sun light.
Cold Spray Coating (3rd Gen. dye-sensitized solar cell)
  • <3rd Gen. Solar Cell: Organic Dye-Sensitized Solar Cell>
  • DSSC is also a new class of low-cost solar cell, based on a semiconductor formed between a photo-sensitized anode and an electrolyte, invented by Gratzel at Ecole Poly Lausanne. It utilizes a low-cost substrate and TiO2 powder for cell construction. Currently the doctor-blading is widely used as a means of coating TiO2 nano-particles.
  • Our group is interested in utilizing supersonic cold-spray techniques to deposit TiO2 nano-particles onto flexible substrates.
Jet Atomization(or Spray)
  • There are many practical applications in utilizing the spray techniques, traditionally and particularly in automotive and rocket propulsion industries.
  • Our group has developed the state-of-the-art spray model, that replicates complicated physics of the two-phase flow spray combustion systems.
  • Also, via electrostatic spray technique, high-resolution inkjet printing technologies are under vigorous development, which has prominent potential use in producing low-cost solar cells.
Fire Modeling
  • Fire fighting has great impact on the rescue of human lives and on the thermal damage of man-made structures. To alleviate the danger, by unexpected fires, understanding water-fire interaction via modeling and experiment and therefore predicting fire-suppression capability is important to the fire safety community.
  • Our group sought to understand the instability dynamics and turbulent mixing characteristics of large-scale fires. The large-eddy-simulation (LES) and Reynolds-averaged Navier-Stokes (RANS) modeling approaches are used.
Spray Coating Research
  • The Wurster Fluidized Bed System (WFBS) has been most commonly used as a powder coating technique.
  • Our group sought to improve the existing WFBS through modeling and small-scale experiment.
  • Our high speed PHANTOM camera enables revealing the detailed powder-mixing powder-solvent coating phenomena, that endues critical information to the pharmaceutical industries.