Flowing behavior into, within and out of individual rolled-up semiconductor nanotubes

流入、流出单个卷起的半导体纳米管的行为

• 批准号: 5425059
• 负责人: Professor Dr. Oliver G. Schmidt
• 金额: --
• 依托单位: Zentrum für Materialien, Architekturen und Integration von Nanomembranen (MAIN)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2004
• 资助国家: 德国
• 起止时间: 2003-12-31 至 2005-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5425059?language=en
• 关键词: Flowing; behavior; into; within; out

Fluid materials (in particular dyes) will be filled into individual rolled-up semiconductor nanotubes by capillary pressure and the filling mechanism will be monitored applying high speed video microscopy and single tube spectroscopy. In order to obtain systematic experimental data the diameter of individual tubes will be varied from 10 to 1000 nm by controllably adjusting the thickness and inherent strain of the rolled up layers. Furthermore, the wall thickness and therefore the elasticity of the nanotube walls will be precisely tuned by the number of layer convolutions. We intend to heat local parts of a filled nanotube with a focused laser beam, which will cause an abrupt expansion of the fluid material within the nanotube body. The resulting spraying behavior out of the nanotube will be studied as a function of tube diameter and wall thickness with millisecond time resolution. The unrivalled control over the geometric and structural properties of well-positioned individual nanotubes in the mesoscopic size region opens a unique opportunity to compare systematic experimental data to existing theoretical models in the field of nanofluidity.

流体材料（特别是染料）将通过毛细管压力填充到单个卷起的半导体纳米管中，并且将利用高速视频显微镜和单管光谱学来监测填充机制。为了获得系统的实验数据，通过可控地调节卷绕层的厚度和固有应变，单个管的直径将在 10 至 1000 nm 之间变化。此外，纳米管壁的壁厚和弹性将通过层卷积的数量精确调节。我们打算用聚焦激光束加热填充纳米管的局部部分，这将导致纳米管体内的流体材料突然膨胀。纳米管的喷射行为将作为管直径和壁厚的函数以毫秒时间分辨率进行研究。对介观尺寸区域中定位良好的单个纳米管的几何和结构特性进行无与伦比的控制，为将系统实验数据与纳米流体领域现有理论模型进行比较提供了独特的机会。