Recent studies show that hydrothermally grown ZnO nanorods can modulate cell adhesion and survival on various substrates. Hydrothermal growth of ZnO nanorods on biliary stents and nitinol wires used in metal stents is demonstrated. The nanorods can be conformably coated with silicon dioxide using low temperature plasma enhanced chemical vapor deposition (PECVD) system to reduce immunogenic response. In addition, the control of nanorod density is demonstrated by using a surfactant, Triton X-100. These results show promise of using nanorod array to control cell adhesion and viability on implantable devices.