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David S. Ballantine, Jr. {left) received his B.S. degree in chemistry from the College of William and Mary {1973) and his Ph.D. in analytical chemistry from the University of Maryland, College Park {1983). After working for Geo-Centers, Inc., where he performed testing and evaluation on a variety of
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microsensor technologies in support of the Chemistry Division of the Naval Research Laboratory in Washington, DC, he joined the faculty of Northern Illinois University. His research focuses on the application of microsensors to basic and applied research, including the use of SAW and optical waveguide devices for investigation of vapor/coating interaction mechanisms, material characterization, and environmental analyses. Hank Wohltjen (right) received his B.S. degrees in chemistry (1972) and in electrical engineering science (1974) from the City University of New York and his Ph.D. in chemistry from Virginia Polytechnic Institute and State University (1978). After three years as a postdoctoral fellow in the New Devices group at the IBM research laboratory in Zurich, Switzerland, he joined the Naval Research Laboratory as a research chemist in 1981. While at NRL he initiated research in SAW devices, organic semiconductors, and optical waveguides. In 1985 he founded Microsensor Systems, Inc., an organization dedicated to research and development of chemical microsensor instrumentation.
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ANALYTICAL CHEMISTRY, VOL. 61, NO. 11, JUNE 1, 1989 · 715 A
