Bimetallic nanoparticles aligned at the tips of carbon nanotubesElectronic supplementary information available: XEDS spectrum of the sample prepared from Ru5C(CO)14Pt(COD); Table listing reports on nanotubes decorated with nanoparticles from the literature; Suggested binding modes of clusters to MWNTs. See http://www.rsc.org/suppdata/cc/b1/b109923j/