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Dr. John T. Fourkas
University of Maryland
Abstract
Making (Tiny 3D) Things with Light
Many new device applications in micro- and nanotechnology require the ability to fabricate complex, 3D structures. Conventional lithographic techniques are not well suited to the creation of many such structures, which has fueled interest in the development of novel fabrication techniques. One rapidly emerging technology for 3D fabrication is multiphoton absorption polymerization (MAP). In MAP, a tightly focused laser beam is used to exposure a photoresist exclusively at the laser focal point. By moving this focal point over a desired pattern in three dimensions, arbitrarily complex structures with feature sizes as small as 100 nm can be created. I will discuss some of our recent progress in expanding the capabilities of MAP as well as in creating functional devices.
Biography
Dr. Fourkas received his BS and MS in Chemistry from the California Institute of Technology and his PhD from Stanford University. He was an NSF Postdoctoral Fellow at the University of Texas at Austin and MIT before joining the faculty of Boston College in 1994. He moved to University of Maryland in 2005, where he is Millard Alexander Professor of Chemistry. His research focuses on applications of nonlinear optics in chemistry, physics, materials science and nanotechnology, on topics ranging from dynamics of liquids in nanoconfinement and at interfaces to develop of nanoparticle-based luminescent probes to laser fabrication of functional micro- and nanostructures. He is a Fellow of the American Physical Society, the American Association for the Advancement of Science and the Optical Society of America.
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