Highly ordered ultralong magnetic nanowires wrapped in stacked graphene layers

• Abdel-Aziz El Mel,
• Jean-Luc Duvail,
• Eric Gautron,
• Wei Xu,
• Chang-Hwan Choi,
• Benoit Angleraud,
• Agnès Granier and
• Pierre-Yves Tessier

Beilstein J. Nanotechnol. 2012, 3, 846–851, doi:10.3762/bjnano.3.95

• nanotubes that we synthesized in a previous study by thermal annealing of Ni nanowires organized in an amorphous carbon film [29]. Thus, although the synthesis method developed in this work is completely different to the one used in our previous study [29], the nanostructures obtained with both methods

• the nickel-catalyzed crystallization of carbon by thermal annealing. During the post-annealing stage of the carbon-containing nickel nanowires, the carbon atoms diffuse and homogenously dissolve in the nickel phase [31][32]. As the limit of the solid solubility of carbon in the nickel phase is reached

• thermal annealing (Table 1). The decrease in the coercive fields suggests that the surface of the nickel wire, i.e., the interface with the graphene shell, becomes very smooth after annealing since morphological defects favor pinning of the domain walls and, thus, result in higher coercivity [34]. The

Generation and agglomeration behaviour of size-selected sub-nm iron clusters as catalysts for the growth of carbon nanotubes

• Ravi Joshi,
• Benjamin Waldschmidt,
• Jörg Engstler,
• Rolf Schäfer and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2011, 2, 734–739, doi:10.3762/bjnano.2.80

• insight as to what extent catalyst agglomeration under thermal annealing of these particles occurs under typical CVD growth conditions. Larger catalyst particles in the size range of 3–10 nm can maintain their size throughout the growth process of CNTs, which typically operates at 750 °C or higher [7

• further [13]. The [FeN/Al@SiOx] grid substrates are then transferred under air to the CVD chamber and a water-assisted catalyzed CNT growth with ethylene as carbon source [12][13] is performed under different thermal annealing conditions (for the detailed experimental setup of the molecular beam and a

• description of the CVD apparatus see the Experimental section). Cluster deposition followed by thermal annealing of size-selected clusters with a diameter of 0.6–0.9 nm and at a coverage of 3% of a monolayer on a [Al@SiOx] TEM grid up to temperatures of 600 °C did not lead to any detectable cluster

Platinum nanoparticles from size adjusted functional colloidal particles generated by a seeded emulsion polymerization process

• Nicolas Vogel,
• Ulrich Ziener,
• Achim Manzke,
• Alfred Plettl,
• Paul Ziemann,
• Johannes Biskupek,
• Clemens K. Weiss and
• Katharina Landfester

Beilstein J. Nanotechnol. 2011, 2, 459–472, doi:10.3762/bjnano.2.50

• colloid particles. b) Arrays of Pt NPs produced by plasma-assisted removal of the organic material and subsequent thermal annealing. Pt-precursor loaded PS colloids on a Si3N4 membrane in the saturated state after exposure to isotropic oxygen plasma for 25 min. a) The diameters of the lumps average out to

Formation of precise 2D Au particle arrays via thermally induced dewetting on pre-patterned substrates

• Dong Wang,
• Ran Ji and
• Peter Schaaf

Beilstein J. Nanotechnol. 2011, 2, 318–326, doi:10.3762/bjnano.2.37

• on the dewetting process of thin metal films on an inert substrate. Dewetting of metallic films on a substrate is driven by the reduction of the surface energy of the thin film and of the interface energy between the film and substrate, and can be induced by thermal annealing [9][10][11], pulsed