Figure 1.

ZnO NW Device & Gas-phase synthesis of Au NPs (a) Schematic diagram of a passivated ZnO NW biosensor with Au NP decoration for DNA sensing in solution. Created by Pavel Puchenkov using Blender 2.8; www.blender.org (b) SEM image of a ZnO NW between Au electrodes before Al₂O₃ passivation layer deposition. (c) Schematic diagram of the magnetron-sputtering system for gas-phase synthesis and deposition of size selected Au NPs. Created using Microsoft Office Professional Plus 2010; products.office.com/home.