Electrochemistry offers an unique opportunity to investigate a variety of chemical processes at interfaces. Several research groups in our department study the fundamentals and applications of electrochemistry, which creates interdisciplinary research areas that span chemistry, physics, biology, and material/nano sciences.We take advantage of the powerful electrochemical approach to synthesize and characterize novel polymer/nano materials and also develop sensor devices. For instance, the high sensitivity and selectivity of our electrochemical sensors allow for in-situ monitoring of biologically important molecules such as DNA, neurotransmitters, and drugs at trace level. We are also interested in understanding how electrons, ions, and molecules are transported at solid/liquid, liquid/liquid, and membrane interfaces. To answer these questions, we develop new electrochemical methods as well as control interfacial structures at the molecular level.