Electrochemically Driven, Electrode-Addressable Formation of Functionalized Polydopamine Films for Neural Interfaces.
Kyungtae Kang, Seokyoung Lee, Raeyoung Kim, Insung S. Choi*,Yoonkey Nam,*
This work reports a new method to selectively bio-functionalize neural interfaces using bioinspired adhesive film ('polydopamine'). We showed that neuron-adhesive biomolecules and polymers (polylysine, RGD peptides) can be linked on microelectrode surfaces via covalent bonds using electrochemically synthesized polydopamine film. (link)
Gold nanograin microelectrodes for neuroelectronic interfaces.
Raeyoung Kim, Nari Hong and Yoonkey Nam*
This work reported a design of microelectrodes using gold nanostructures ('nanograin') for neural recording and stimulation. We developed a electrochemical deposition technique to generate a nanograin structures on metal microelectrodes and characterized metal-electrolyte interfaces using AC impedance spectroscopy and current injection tests. (link)