Every spring DISCOVER: Marquette University Research and Scholarship showcases some of the most interesting research happening on Marquette's campus. Learn more through the links below.
Other nanotechnology projects at Marquette human hair) with zinc oxide molecules Dr. Chieu Tran, Pfletschinger-Habermann Professor of that glow when electrified, creating one Analytical Chemistry, is focused on gaining insight into of the world’s smallest LED light sources. complex chemical and biochemical systems and processes, Tests at Cornell will soon determine as well as developing green methods to synthesize novel, whether he also has been able to bridge high-performance supramolecular composite materials for the gap with thin layers of graphene, a lattice-like arrangement of carbon atoms generating intense buzz in nanotechnology circles. But his biggest strides may be in design and fabrication itself. Unlike predecessors, Lee’s nanostructures have arms that are suspended, rather than resting on the base layer, or substrate. use in water purification and chemical and biosensors. Dr. Rajendra Rathore, professor of organic chemistry, researches the design and synthesis of novel electroactive molecular wires and organic materials that hold potential for the construction of modern photovoltaic devices and for applications in the emerging field of nanotechnology, as well as in biomaterial applications. Interference is avoided. Perhaps most remarkable has been his resourcefulness. Dr. Fabian Josse, professor of electrical and computer Whereas pioneering peers created engineering and director of the Microsensors Research somewhat similar nanostructures with Laboratory, studies solid state sensors and microelectro- an etching process involving $5 million mechanical systems devices for liquid-phase chemical and electron-beam lithography equipment, biochemical sensor applications. Lee didn’t have that luxury. So he originated an approach involving an Dr. Jeanne Hossenlopp, professor of chemistry and vice everyday optical lithography exposer that provost of research, studies factors that control the structure was manufactured before he was born and reactivity of layered metal hydroxides with nanodimen- and was gathering dust in a New Jersey sional interlayer galleries, as well as the development and laboratory before he snatched it up for characterization of these materials for chemical sensor, fire $7,000. The high-end electron-beam retardancy and water quality applications. equipment is a logical choice for tackling precise work at the nanoscale. His old warhorse, not so much. “It’s like deciding not to drive a car from Milwaukee to Madison but riding a bike instead,” he explains. “But through creativity and design, I’m able to make something like no one else has been able to make it. I’m really proud of that. And the optical lithography equipment Dr. James Gardinier, associate professor of chemistry, examines ways to manipulate electron or energy flow in supramolecular assemblies with the purpose of designing new molecular wires, fluorescent dyes and/or lightharvesting antennae. Dr. Krassimira Hristova, assistant professor of biological sciences, specializes in molecular and environmental is actually very common in industry. If microbiology to develop nanoparticle-based molecular this proves useful, there will be no big assays for environmental monitoring and to study technical breakthrough required to nanoparticles’ toxicity to bacteria, yeast and plants. move from the design level to the manufacturing level.”² Marquette University 11