1. Post-Doctoral Fellow George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332 e-mail:
2. Department of Mechanical Engineering, Indian Institute of Science, Bangalore, Kamataka 560012, India
3. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332
4. Triad Floors, Inc., Denver, CO 80202