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

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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.