1. Department
of Physics, Wake Forest University, Winston-Salem, North Carolina 27109, United States
2. Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
3. Faculty
of Physics and Technical Sciences, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
4. National University
of Science and Technology “MISIS”, Moscow, 119049 Russian Federation
5. Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States