Continued advances in life science and technologies require new imaging capabilities. In this talk, a novel imaging approach based on surface plasmon resonance will be described. Compared to the traditional optical imaging techniques, the plasmonic-based approach can image not only the morphology of samples, but also local electrochemical current and impedance of various chemical and biological processes. Important benefits of this approach include fast and non-invasive electrochemical current and impedance imaging of various samples. Using the techniques, various applications, including sensitive and selective trace analysis, protein microarrays, and single cell studies, have been demonstrated.

NJ Tao is the Director of the Center for Bioelectronics and Biosensors, Biodesign Institute at ASU. He joined the ASU faculty as a professor of electrical engineering in August 2001, and is graduate faculty of physics, material engineering, chemistry and biochemistry. He has over10 patents, published over 200 refereed journal articles (citations>10,000, h-index >60), and given over 200 invited and keynote talks worldwide. His research interests include cellphone-based sensors for mobile health, single molecule electronics and plasmonic imaging for biological applications. njtao@asu.edu