1. Aerosol
and Particle Technology Laboratory, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, South Korea
2. Ralph
M. Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
3. Eco-Machinery
Division, Korea Institute of Machinery and Materials, 156 Gajeongbuk-ro,
Yuseong-gu, Daejeon 305-343, South Korea