Reports Outline Functional Materials Findings from Institute of Chemical Technology (Time dependence and mechanism of Au nanostructure transformation during annealing)
By a News Reporter-Staff News Editor at Journal of Technology -- A new study on Functional Materials is now available. According to news reporting out of Prague, Czech Republic, by VerticalNews editors, research stated, "Melting point of thin nanostructured materials decreases with decreasing particle size. This can influence thermal stability of thin films used in electronic applications and compromise their function."
Our news journalists obtained a quote from the research from the Institute of Chemical Technology, "Therefore it is desirable to explore connection between metal film thickness and its thermal stability. Thin films of Au were sputtered for 10-300 s (2-60 nm thick layers). Post deposition annealing was carried out at 150-300 degrees C for 15-180 min. Sheet electrical resistance measurements were employed to investigate electrical continuousness of the Au film. A significant leap in percolation threshold was found between samples annealed at 250 degrees C and 300 degrees C. This suggests that phase transition occurs during annealing, however, annealing for different times suggests the structural modification is a gradual and slow process, which is a sign of diffusion in a solid state. This was further supported by UV-Vis measurements which showed slow evolution of plasmon resonance peak."
According to the news editors, the research concluded: "Convincing direct evidence of the surface morphology evolution was obtained by AFM microscopy."
For more information on this research see: Time dependence and mechanism of Au nanostructure transformation during annealing. Functional Materials Letters, 2014;7(3):15-18. Functional Materials Letters can be contacted at: World Scientific Publ Co Pte Ltd, 5 Toh Tuck Link, Singapore 596224, Singapore. (World Scientific Publishing - www.worldscientific.com/; Functional Materials Letters - www.worldscinet.com/fml/fml.shtml)
Our news journalists report that additional information may be obtained by contacting O. Kvitek, Inst Chem Technol, Dept. of Solid State Engn, CR-16628 Prague, Czech Republic. Additional authors for this research include P. Konrad and V. Svorcik.
Keywords for this news article include: Prague, Europe, Czech Republic, Functional Materials
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