Researchers in the UK, France and the US have made the first quantum “rattles” from gold quantum dots inside a porous silica shell. The nanostructures can be heated up using light and so be used to kill tumour cells in a technique called photothermal therapy. They can also carry drugs thanks to their hollow cores, and be used to image tumours using three complementary techniques: photoacoustic, fluorescence, and magnetic resonance imaging…..
http://nanotechweb.org/cws/article/tech/60387