The figure depicts a new type of transparent electrode recording array made of vertically aligned zinc oxide nanotubes grown on graphene (top middle). The nanotubes are formed by sharp nanowalls to penetrate the cell (top left) while transparent graphene layers allow imaging the neurons using with conventional microscopy (top right). As a result, simultaneous recording of electrical signals was obtained from multiple neurons at single-cell resolution. Moreover, the signals had distinguishable waveforms that implicated extracellular- and intracellular-like electrophysiological voltage changes (bottom).
- Jamin Lee
- Keundong Lee
- Gyu-Chul Yi