flame synthesis
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- Flame aerosol synthesis of nanostructured material
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Manufacturing of nanostructured materials and functional devices offers many exciting opportunities for substantial contribution in renewable energy utilization, environmental compliance, and product development. In the past two decades, gas-phase flame synthesis has not only proved to be one of the most scalable and economic...
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- Absorption-ablation-excitation mechanism of laser-
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The absorption-ablation-excitation mechanism in laser-cluster interactions is investigated by measuring Rayleigh scattering of aerosol clusters along with atomic emission from phase-selective laser-induced breakdown spectroscopy. For 532 nm excitation, as the laser intensity increases beyond 0.16 GW/cm2, the scatte...
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- Two dimensional Phase-selective LIBS
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Two-dimensional imaging of gas/particle phase transition of metal oxides in their native high-temperature flow conditions, using laser-driven localized nanoplasmas, was obtained by utilizing the gap between the excitation energies of the gas and particle phases such that only the Ti atoms in the particle phase were selectively...
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- SSF-made Pd@TiO2 Nano Catalysts
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The titania supported palladium nano catalysts (Pd@TiO2) are synthesized in one-step using a premixed stagnation swirl flame (SSF) with ultra-fine spray system. This novel SSF method, with features of short residence time and fast quenching, produces nanosized (< 2.5 nm) palladium particles being well dispersed on the 7-8 ...
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- Dipole–dipole interaction of NPs
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The interactions between nanoparticles in high-temperature vapor-synthesis environments have important implications on their self-assembly into specific structures. We apply classical molecular-dynamics (MD) simulations, with the interatomic potential, to study the interaction forces and the resulting dynamics between pairs o...
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- Diagnostic of V-Ti doping nanoparticle synthesis
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Flame synthesis of V-doping TiO2 is studied by in-situ diagnostic of phase selective laser-induced breakdown spectroscopy (LIBS). We apply this novel optical spectroscopy to tracing the gas-to-particle phase transition of V and Ti species, as low-intensity laser only excites V and Ti present inthe particle phase but not in th...
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