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Third Coast Water Seminars: Tuning Ionic Transport

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Tuning Ionic Transport with Nanopores and Ionic Circuits

About this Event

The Third Coast Water Seminars are a monthly research series hosted by Current in partnership with Argonne National Laboratory, Northwestern University, the University of Illinois Urbana-Champaign, the University of Illinois at Chicago, and the University of Chicago. The series is intended to share the latest research in water and water-related technologies/areas of need to spur collaboration and solve pressing water challenges.

This seminar titled, Tuning Ionic Transport with Nanopores and Ionic Circuits, will be delivered by Dr. Zuzanna S. Siwy. Transport through nanopores and ion channels in cell membranes exists in virtually all biological cells and is important in such things as the regulation of heart function, nerve signals, and delivery of nutrients to the cell. Nanopores are also a model system to unravel new physical and chemical transport phenomena that originate from the extreme confinement; this direction of research is important, because many separation and sensing processes require pores with nanometer-sized openings. Dr. Siwy's scientific interests have been focused on fabricating synthetic single nanopores with applications in biophysics and nanotechnology. The nanopores that we fabricate by the track-etching technique and e-beam drilling have diameters as small as few nanometers, and they have controlled geometry and surface chemistry. She will show how these nanopores can be used as devices for controlling the flow of ions and charged molecules in a solution, effectively functioning as ionic diodes and ionic transistors. Preparation of a biomimetic nanopore that transports potassium ions but rejects sodium ions will be described as well. Finally our newest direction of research aimed at preparation of ionic amplifiers will also be presented.

Agenda

  • 3pm: Introduction and Welcome
  • 3:05pm: Dr. Zuzanna Siwy, University of California, Irvine
  • 3:45pm: Audience Q&A
  • 3:55pm: Next Event Information & Closing Remarks

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Dr. Zuzanna S. Siwy received her Ph.D. in 1997 from the Silesian University of Technology, Gliwice, Poland in 2004. From 2000–2003 she was a Fellow of the Foundation for Polish Science, and the Alexander von Humboldt Foundation at the Institute for Heavy Ions Research (GSI) in Darmstadt, Germany. After conducting postdoctoral research at the University of Florida, Gainesville, in July 2005, Dr. Siwy joined the Department of Physics and Astronomy at the University of California, Irvine. In 2007, she became the Fellow of the Alfred von Sloan Foundation. In 2009, Dr. Siwy was awarded the Presidential Early Career Award for Scientists and Engineers as well as the Bessel Award from the Alexander von Humboldt Foundation. She is a Fellow of the American Physical Society, and AAAS. Her current research interests focus on using synthetic nanopores as templates for biomimetic channels as well as ionic diodes and ionic transistors.

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