2. Electroplate used to make nanostructures

3. Can the cathode plate be insulator? Electroplate System: Can the cathode plate be coated with some conductive metal? Anode: Cu e-e- e-e- CuSO 4 Cu 2+ Power supply Cathode: plate More interesting: You can make a mark on the deposition plate yourself!!

4. How do we get the Cu transferred from anode to cathode?? Or X Why we can not use insulator to be cathode and why there is no deposition on marked place?? Magic ?

5. Cu Cu 2+ +2e - Cu 2+ +2e - Cu AnodeCathode Cu transition with NO change of solutions concentration!! CuSO 4 Cu Cu 2+ e-e-

6. Why we choose electroplate to make nanostructure?? The process is easy to operate and only needs simple equipments. Its easy to control the deposition rate by controlling the voltage/current. Its a good way to make Nanowries. diblock template (1um) gold silicon wafer

7. 200 nm silicon gold electrodeposited Co nanowires unfilled polymer template Application Data storage devices 1 0 0 1 1

8. Power supply Wires Some kind of metal rod A conductive plate Solution with the same kind of element as metal rod A marker and acetone What we need for a demonstration??