ALLEN J. BARD is Professor and Hackerman-Welch Regents Chair in Chemistry at the University of Texas at Austin, where he has taught since 1958. The author or coauthor of several books and over 800 papers and over 23 patents, Dr. Bard was editor-in-chief of the Journal of the American Chemical Society, and editor or coeditor of Standard Potentials in Aqueous Solution (Marcel Dekker, Inc.), the multivolume Electroanalytical Chemistry series (Marcel Dekker, Inc.), the Encyclopedia of Electrochemistry of the Elements (Marcel Dekker, Inc.), and Electrochemical Methods (with Larry R. Faulkner). He was elected to the National Academy of Sciences in 1982 and is past president of the International Union of Pure and Applied Chemistry. Dr. Bard received the B.S. degree (1955) from the City College of New York, New York, and the M.A. (1956) and Ph.D. (1958) degrees from Harvard University, Cambridge, Massachusetts. He has received a number of awards, including the Palladium medal of the ECS, the Priestly medal of the ACS, the Welch award and the Wolf prize. CYNTHIA G. ZOSKI is Professor in the Department of Chemistry and Biochemistry at New Mexico State University. Her research interests include electroanalytical chemistry, ultramicroelectrodes, scanning electrochemical microscopy (SECM), electrocatalysis, and sensors based on micro- and nanoelectrode arrays. Dr. Zoski is the coauthor of Electrochemical Methods: Instructor’s Solution Manual (with Johna Leddy, Wiley, 2001) and Electrochemical Methods: Student’s Solution Manual (with Johna Leddy, Wiley 2002), editor of the Handbook of Electrochemistry (Elsevier, 2007), and author or co-author of over 60 papers and book chapters. Dr. Zoski received the B.S. (1976) degree from Lehigh University, Pennsylvania, M.Sc. (1979) from Trent University, Canada, and Ph.D. (1985) from Queen’s University, Canada.