Andrew Hector1

1, University of Southampton, Southampton, , United Kingdom

Supercritical fluids have low surface tension and viscosity, so provide high mass transport rates in nanoporous structures. However, due to low dielectric constants and the need to work at elevated temperature and pressure there is little published work on electrodeposition from supercritical systems. The deposition of tin nanowires from supercritical difluoromethane into 13 and 55 nm anodic alumina templates will be described. The size limits of the technique have also been tested with tin deposition into ~2 nm pore mesoporous silica templates, and the evidence for deposition into these very small pore systems will also be described.