Temperature-controlled growth of α-Al₂O₃nanobelts and nanosheets

Nanothermometers for Transmission Electron Microscopy – Fabrication and Characterization

“…[1][2][3] Recently, electron microscopes, including scanning electron microscopes and transmission electron microscopes, have been used to elucidate the growth mechanisms of nanomaterials and to prepare nanodevices in situ. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] The length of Si and Ge nanostructures can be precisely controlled down to tens of nanometers by in situ annealing in electron microscopes to yield PtSi/Si/PtSi and Cu 3 Ge/Ge/Cu 3 Ge nanowires (NWs), which show excellent performance as FET (field-effect transisitor) devices.…”

Synthesis and characterization of metal oxide nanorod brushes

“…Lee et al (2003) synthesized alumina nanowires by hydrothermal method in presence of surfactants. α-Al 2 O 3 nanobelts and nanosheets with different morphologies and size have been prepared by a chemical route from H 2 O and Al in argon atmosphere at high temperatures (Fang et al 2003). Hwang and coworkers (2004) synthesized amorphous Al 2 O 3 nanotubes by atomic layer deposition of alumina on ZnO core followed by etching the ZnO.…”

Formation of Cube-shaped α-Al2O3Microstructures by the Reaction of Carbon Monoxide with Aluminum Sulfide

“…Many efforts have been made to prepare a single crystalline α-Al2O3 with various morphologies using aluminum or a mixture of aluminum and alumina as an aluminum source, but most of the morphologies have been nanowire and nanobelt. [8][9][10] The hexagonal prismatic and ruby-shaped microstructures of α-Al 2 O 3 , as shown in Figures 2(c) and 2(d), were also synthesized by glycothermal treatment of aluminum hydrous oxide precursors at 300 o C under autogenous vapor pressure. 11 The α-Al2O3 microstructures obtained in this work are suggested to grow via the vapor-solid mechanism 12 because no metal catalyst was intentionally added to the reaction system.…”