[1] Ctr. for Adv. Eng. Fibers and Films, Sch. Textiles, Fiber, and Poly. Sci., Clemson University, Clemson, SC 29634, United States
[2] Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, United States
[3] School of Chemical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States