@article {1386, title = {Hollow and Solid Metallic Nanoparticles in Sensing and in Nanocatalysis}, journal = {Chemistry of Materials}, volume = {26}, number = {1}, year = {2013}, pages = {44-58}, isbn = {0897-4756}, author = {Mahmoud, Mahmoud A. and O{\textquoteright}Neil, Daniel and El-Sayed, Mostafa A.} }