John V. Seeley is an Associate Professor of Chemistry at Oakland University in Rochester, MI. He received a bachelor of science degree in chemistry from Central Michigan University in 1989 and a Ph.D. in physical chemistry from the Massachusetts Institute of Technology in 1994. He then did three years of post-doctoral research at the United States Air Force Geophysics Laboratory. He joined the faculty of Oakland University in 1997. His research group develops new techniques for characterizing complex mixtures of organic compounds. Over the past six years they have focused on comprehensive two-dimensional gas chromatography (GC x GC). Professor Seeley’s research group has created a series of flow-switching modulators that allow GC x GC separations to be generated without the need of additional consumables or high-cost equipment. They have applied flow-switching GC x GC to a multitude of scientific problems including the study of atmospheric chemistry, the evaluation of breath analysis as a tool for non-invasive disease detection, and the rapid characterization of petrochemical mixtures.