1. University of Arkansas, Ralph E. Martin Department of Chemical Engineering, Fayetteville, Arkansas 72701
2. Institute of Mechanical Process Engineering and Minerals Processing, Agriclolastrasse 1, 09599 Freiberg, Germany
3. University of Arkansas, Microelectronics-Photonics Program, Fayetteville, Arkansas 72701
4. University of Arkansas, Ralph E. Martin Department of Chemical Engineering, Fayetteville, Arkansas 72701cUniversity of Arkansas, Microelectronics-Photonics Program, Fayetteville, Arkansas 72701