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Mechanical behavior and magnetic separation of quasi-one-dimensional SnO₂ nanostructures: A technique for achieving monosize nanobelts/nanowires
(Georgia Institute of Technology, 2005-03-25)
The as-synthesized nanowires and nanobelts usually have a large size distribution. We demonstrate here a ball milling technique for narrowing the size distribution of oxide nanobelts and nanowires. High-resolution scanning ...
Toward high output-power nanogenerator
(Georgia Institute of Technology, 2008-04-29)
In this paper, the factors that determine the power output of a piezoelectric nanowire (NW) nanogenerator (NG) have been analyzed. The output current is the sum of those contributed by all of the NWs while the output voltage ...
Polar-surface dominated ZnO nanobelts and the electrostatic energy induced nanohelixes, nanosprings, and nanospirals
(Georgia Institute of Technology, 2004-02-09)
We report the controlled synthesis of free-standing ZnO nanobelts whose surfaces are dominated by the large polar surfaces. The nanobelts grow along the a axis, their large top/bottom surfaces are the ±(0001) polar planes, ...
Nanobelts as nanocantilevers
(Georgia Institute of Technology, 2003-04-28)
Semiconducting oxide nanobelts of ZnO have been sectioned and manipulated, for microelectromechanical systems, using an atomic force microscopy probe. Structurally modified nanobelts demonstrate potential for nanocantilever ...
Controlled synthesis and manipulation of ZnO nanorings and nanobows
(Georgia Institute of Technology, 2005-01-19)
An experimental procedure is presented for the controlled synthesis and manipulation of ZnO nanorings and nanobows at high purity and large yield. Atomic force microscopy manipulation of the nanostructures demonstrates ...
Synthesis and characterization of Zn₁₋ₓMnₓO nanowires
(Georgia Institute of Technology, 2008-04-21)
Mn doped ZnO nanowires (NWs) were fabricated by a one-step vapor-solid process at 500°C. The doped Mn exists in the wurtzite lattice as substitutional atom without forming secondary phases. X-ray absorption near-edge ...
Direct synthesis of silicon nanowires, silica nanospheres, and wire-like nanosphere agglomerates
(Georgia Institute of Technology, 2000-04-24)
Elevated temperature synthesis has been used to generate virtually defect free SiO₂sheathed crystalline silicon nanowires and silica (SiO₂) nanospheres which can be agglomerated to wire-like configurations impregnated with ...
Nanoscale mechanical behavior of individual semiconducting nanobelts
(Georgia Institute of Technology, 2003-08-04)
Nanobelts are a group of materials that have a rectangle-like cross section with typical widths of several hundred nanometers, width-to-thickness ratios of 5–10, and lengths of hundreds of micrometers. In this letter, ...
Integration of metal oxide nanobelts with microsystems for nerve agent detection
(Georgia Institute of Technology, 2005-01-31)
We have assembled tin dioxide nanobelts with low-power microheaters for detecting dimethyl methylphosphonate (DMMP), a nerve agent simulant. The electrical conductance of a heated nanobelt increased for 5% upon exposure ...
Nanoarchitectures of semiconducting and piezoelectric zinc oxide
(Georgia Institute of Technology, 2005-01-21)
Semiconducting and piezoelectric zinc oxide has two important structure characteristics: the multiple and switchable growth directions: 010, 20, and 0001; and the {0001} polar surfaces. The fast growth directions create ...