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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Retardation of Liquid Indium Flow in Indium Oxide Nanotubes
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Retardation of Liquid Indium Flow in Indium Oxide Nanotubes

机译：氧化铟纳米管中液态铟流量的延迟

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摘要

High-resolution transmission electron microscopy and energy-dispersive X-ray analysis carried out on indium oxide nanotubes grown by a chemical vapor deposition technique show the presence of indium metal segments along the indium oxide (IO) nanotube axis having one end closed. A real-time HRTEM video in continuous mode imaging has been carried out to study the directional flow of liquid indium. Electron-beam-induced heating results in the increase in indium vapor pressure and desorption of gases at the closed end of the IO nanotubes. This buildup of differential pressure between open and closed columns leads to the flow of indium away from the closed end of the IO nanotube. Interestingly, the indium flow rate was observed to decrease from 2.8 to 0.3 nm/s with a corresponding decrease in the nanotubes' diameter from 138 to 38 nm. This study indicates that the wetting properties of the liquid-host nanotube interface critically decides the fluid dynamics at nanoscale, and depending upon the interfacial properties, enhancement or retardation of flow can be observed on the reduction of the nanotube diameter.
机译：在通过化学气相沉积技术生长的氧化铟纳米管上进行的高分辨率透射电子显微镜和能量色散X射线分析显示，沿着一端封闭的氧化铟（IO）纳米管轴存在铟金属链段。已经进行了连续模式成像的实时HRTEM视频，以研究液态铟的定向流动。电子束引起的加热导致铟蒸气压的增加和IO纳米管封闭端处气体的解吸。开放柱和封闭柱之间的压差的这种积累导致铟流离开IO纳米管的封闭端。有趣的是，观察到铟流速从2.8降低至0.3nm / s，纳米管直径相应地从138nm降低至38nm。该研究表明，液体-主体纳米管界面的润湿性能决定了纳米级流体动力学，并且取决于界面性能，在纳米管直径减小时可以观察到流动的增强或延迟。

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