Title |
Synthesis of crystalline and amorphous, particle-agglomerated 3-D nanostructures of Al and Si oxides by femtosecond laser and the prediction of these particle sizes
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Published in |
Discover Nano, November 2012
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DOI | 10.1186/1556-276x-7-619 |
Pubmed ID | |
Authors |
Mugunthan Sivayoganathan, Bo Tan, Krishnan Venkatakrishnan |
Abstract |
We report a single step technique of synthesizing particle-agglomerated, amorphous 3-D nanostructures of Al and Si oxides on powder-fused aluminosilicate ceramic plates and a simple novel method of wafer-foil ablation to fabricate crystalline nanostructures of Al and Si oxides at ambient conditions. We also propose a particle size prediction mechanism to regulate the size of vapor-condensed agglomerated nanoparticles in these structures. Size characterization studies performed on the agglomerated nanoparticles of fabricated 3-D structures showed that the size distributions vary with the fluence-to-threshold ratio. The variation in laser parameters leads to varying plume temperature, pressure, amount of supersaturation, nucleation rate, and the growth rate of particles in the plume. The novel wafer-foil ablation technique could promote the possibilities of fabricating oxide nanostructures with varying Al/Si ratio, and the crystallinity of these structures enhances possible applications. The fabricated nanostructures of Al and Si oxides could have great potentials to be used in the fabrication of low power-consuming complementary metal-oxide-semiconductor circuits and in Mn catalysts to enhance the efficiency of oxidation on ethylbenzene to acetophenone in the super-critical carbon dioxide. |
Mendeley readers
Geographical breakdown
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Unknown | 7 | 100% |
Demographic breakdown
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Librarian | 1 | 14% |
Other | 1 | 14% |
Researcher | 1 | 14% |
Unknown | 1 | 14% |
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Unknown | 3 | 43% |