The Ti:sapphire oscillator is used to realize structural change in an organic glass (polymethyl -methacrylate (PMMA)). Single pulse fluence threshold of PMMA and the relation of the breakdown threshold with different ...The Ti:sapphire oscillator is used to realize structural change in an organic glass (polymethyl -methacrylate (PMMA)). Single pulse fluence threshold of PMMA and the relation of the breakdown threshold with different numerical aperture objectives are determined using a formula deduced from an existent equation. Three-dimensional dots in the organic glass is performed at the same time.展开更多
Three different precursors of boron-aqua and glycerol solutions of boric acid and ethanol solution of trimethyl borate were used for the preparation of organic–inorganic advanced materials. The films and bulk materia...Three different precursors of boron-aqua and glycerol solutions of boric acid and ethanol solution of trimethyl borate were used for the preparation of organic–inorganic advanced materials. The films and bulk materials samples were heat treated at 100, 400, 800？C for 2 h. The hybrid samples were stable and transparent until 100？C. The further increase of temperature to 400？C led to destruction of samples, and at 800？C they were molten. The structural changes during the pyrolysis were studied by Fourier transform infrared spectroscopy, differential thermal analysis, and X-ray diffraction. Details of surface morphology were observed by scanning electron microscopy. The obtained BO_3 and BO_4 groups were identified in the molten materials after pyrolysis. The quantities and order of borate structural units as well as residual carbon in the networks depended on boron precursor type. PVA/PEG/B_2O_3 hybrid materials were proved to be appropriate precursors for synthesizing borate and carboborate glass and carbon/borate glass nanocomposites. To access the impact of the experimental conditions on the structural changes of the nanocomposites, cluster analysis of the IR-spectral data was used as a classification method.展开更多
The 17th IUMRS International Conference in Asia was held in Qingdao from October 20th to 24th,2016.This conference contained 28international symposia.One of symposia,titled as Serration and Noise Behavior in Advanced ...The 17th IUMRS International Conference in Asia was held in Qingdao from October 20th to 24th,2016.This conference contained 28international symposia.One of symposia,titled as Serration and Noise Behavior in Advanced Materials,was well organized,which provided an effective platform to discuss the non-linear behavior in advanced materials including high-entropy alloys,bulk metallic glasses,and lightweight alloys,etc.Generally speaking,serration and noise phenomenon exist everywhere,such as,展开更多
基金This work was supported by the National Key Basic Research Special Foundation (NKBRSF) (Grant No. G1999075201) the National Natural Science Foundation of China (Grant No. 60278003).
文摘The Ti:sapphire oscillator is used to realize structural change in an organic glass (polymethyl -methacrylate (PMMA)). Single pulse fluence threshold of PMMA and the relation of the breakdown threshold with different numerical aperture objectives are determined using a formula deduced from an existent equation. Three-dimensional dots in the organic glass is performed at the same time.
基金supported by the Spanish Ministry of Education and Science (Project CTM2012-39183)the Generalitat de Catalunya (Grup Consolidat 2014SGR1017)support of H2020 program of the European Union (project Materials Networking)
文摘Three different precursors of boron-aqua and glycerol solutions of boric acid and ethanol solution of trimethyl borate were used for the preparation of organic–inorganic advanced materials. The films and bulk materials samples were heat treated at 100, 400, 800？C for 2 h. The hybrid samples were stable and transparent until 100？C. The further increase of temperature to 400？C led to destruction of samples, and at 800？C they were molten. The structural changes during the pyrolysis were studied by Fourier transform infrared spectroscopy, differential thermal analysis, and X-ray diffraction. Details of surface morphology were observed by scanning electron microscopy. The obtained BO_3 and BO_4 groups were identified in the molten materials after pyrolysis. The quantities and order of borate structural units as well as residual carbon in the networks depended on boron precursor type. PVA/PEG/B_2O_3 hybrid materials were proved to be appropriate precursors for synthesizing borate and carboborate glass and carbon/borate glass nanocomposites. To access the impact of the experimental conditions on the structural changes of the nanocomposites, cluster analysis of the IR-spectral data was used as a classification method.
文摘The 17th IUMRS International Conference in Asia was held in Qingdao from October 20th to 24th,2016.This conference contained 28international symposia.One of symposia,titled as Serration and Noise Behavior in Advanced Materials,was well organized,which provided an effective platform to discuss the non-linear behavior in advanced materials including high-entropy alloys,bulk metallic glasses,and lightweight alloys,etc.Generally speaking,serration and noise phenomenon exist everywhere,such as,
