Browsing by Subject "Nanotubos de carbono"
Now showing items 1-7 of 7
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Crescimento de nano tubos de carbono a partir do metano sobre catalisadores de cobalto suportados.
Due to its exceptional physical and chemical properties, in a structure of nanometric size, carbon nanotube (CNT) can generate a great possibility of applications: added in plastics, the nanotubos can harden or become them ... -
Dinâmica de spins em nanoestruturas metálicas
| Posted on: 01 mar. 2011In the present work, we investigate the spin pumping mechanism. In 2002, Tserkovnyak et al. proposed that a precessing magnetization of a magnetic unit coupled to a non-magnetic metal can transfer angular momentum to the ... -
Estudo teórico de propriedades eletrônicas de nanoestruturas de carbono
| Posted on: 01 jan. 2010In this thesis we develop theoretical studies on the electronic properties of some graphitic carbon based systems: graphene nanoribbons, graphene multi-terminal devices and carbon nanotubes. The adopted model calculation ... -
Estudos do transporte em nanoestruturas moleculares quasi unidimensionais a partir de experimentos e modelos teóricos
This thesis comprises detailed experimental and theoretical investigations of the transport properties of one-dimensional nanostructures. Most of the work is dedicated to the exploration of the fascinating effects occurring ... -
Junções e anéis tipo Y de nanotubos de carbono
| Posted on: 12 nov. 2003Carbon nanotubes are cylindrical molecules which present interesting mechanical and electronical properties and may be described as a single graphene sheet rolled up as a tube. Depending only on their geometrical details, ... -
Junções e anéis tipo Y de nanotubos de carbono
| Posted on: 12 nov. 2003Carbon nanotubes are cylindrical molecules which present interesting mechanical and electronical properties and may be described as a single graphene sheet rolled up as a tube. Depending only on their geometrical details, ...