Institution: | (1) Department of Physics and Center for Electro-Optics, University of Nebraska, Lincoln, Nebraska 68588-0111, USA Fax: 4024722879 E-mail: jliu@unlserve.unl.edu, US;(2) Department of Physics, University of Nebraska, Omaha, Nebraska 68182-0266, USA, US;(3) Department of Chemistry, University of Nebraska, Omaha, Nebraska 68182-0109, USA, US |