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首页> 外文期刊>Applied Physics Letters >Direct observation of blocked nanoscale surface evaporation on SiO_2 nanodroplets
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Direct observation of blocked nanoscale surface evaporation on SiO_2 nanodroplets

机译：直接观察SiO_2纳米液滴上受阻的纳米级表面蒸发

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摘要

Nano-scale surface evaporation of SiO_2 nanodroplets from a volcano-shaped tip (tip diameter d ～ 20 nm to 70 nm) was observed directly using an in situ transmission electron microscopy method. Au nanoparticles, those precipitated in the SiO_2 matrix after an Au catalyzed growth, diffused and pinned onto the evaporation surface, which induced blocked evaporation dynamics. Our observations provide direct evidences of blocked evaporation dynamics caused by small-sized nanoparticles at the nanometer scale.
机译：使用原位透射电子显微镜法直接观察到SiO_2纳米液滴从火山形尖端（尖端直径d〜20 nm至70 nm）的纳米级表面蒸发。 Au纳米粒子，即Au催化生长后在SiO_2基体中沉淀的纳米粒子，扩散并固定在蒸发表面上，从而导致蒸发动力学受阻。我们的观察结果直接证明了由纳米尺寸的小尺寸纳米颗粒引起的蒸发动力学受阻。

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  • 来源
    《Applied Physics Letters》 |2012年第18期|183114.1-183114.5|共5页
  • 作者

    Neng Wan; Jun Xu; Li-Tao Sun; Matteo Martini; Qing-An Huang; Xiao-Hui Hu; Tao Xu; Heng-Chang Bi; Jun Sun;

  • 作者单位

    SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, School of Electrical Science and Engineering, Southeast University, 210096 Nanjing, China,Laboratoire de Physico-Chimie des Materiaux Luminescents, Universite Claude Bernard Lyon 1, UMR 5620 CNRS-UCBL, 69622 Villeurbanne Cedex, France;

    National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering and School of Physics, Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, Nanjing University, 210093 Nanjing, China;

    SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, School of Electrical Science and Engineering, Southeast University, 210096 Nanjing, China;

    Laboratoire de Physico-Chimie des Materiaux Luminescents, Universite Claude Bernard Lyon 1, UMR 5620 CNRS-UCBL, 69622 Villeurbanne Cedex, France;

    SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, School of Electrical Science and Engineering, Southeast University, 210096 Nanjing, China;

    SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, School of Electrical Science and Engineering, Southeast University, 210096 Nanjing, China;

    SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, School of Electrical Science and Engineering, Southeast University, 210096 Nanjing, China;

    SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, School of Electrical Science and Engineering, Southeast University, 210096 Nanjing, China;

    SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, School of Electrical Science and Engineering, Southeast University, 210096 Nanjing, China;

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