Synthesis and nucleation-growth mechanism of almost catalyst-free carbon nanotubes grown from Fe-filled sphere-like graphene-shell surface Muhammad Salleh Shamsudin*, Maryam Mohammad, Syazwan Afif Mohd Zobir, Noor Asnida Asli, Suriani Abu Bakar, Saifollah Abdullah, Syed Yusainee Syed Yahya, Mohamad Rusop Mahmood, 10.1186/2193-8865-3-13 XML Requires Subscription HTML Requires Subscription PDF views: 83 downloads: 134