Affiliation: | 1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106-9510, USA;2. Departamento de Fisica, Escuela Politécnica Nacional, Quito, Ladron de Guevara E11-253, Ecuador;3. Program in Biomolecular Sciences and Engineering, University of California, Santa Barbara, Santa Barbara, CA 93106-9510, USA |