Real-time formation, accurate positioning, and fluid filling of single rolled-up nanotubes
Real-time formation, accurate positioning, and fluid filling of single rolled-up nanotubes
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DOI：
10.1063/1.1795973
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发表时间：
2004-10-04
影响因子：
4
通讯作者：
Schmidt, OG
中科院分区：
文献类型：
--
作者：
Deneke, C;Schmidt, OG
我们应用实时视频显微镜来详细监测卷起的 InAs/GaAs 管的形成。卷起过程在开始时是高度非线性的，在中间阶段是线性的，并且在长时间蚀刻时停止。这种自限制效应允许将管精确定位在基底表面上。我们研究了光刻图案基板上卷起纳米管（RUNT）的形成作为牺牲层厚度和管直径的函数，并且我们的结果通过简单的扩散模型得到了很好的描述。我们用染料液体填充位置明确、长度明确的 RUNT，并在红色光谱范围内观察到这些结构的强荧光信号。 (C) 2004 年美国物理研究所。
We apply real-time video microscopy to monitor the formation of rolled-up InAs/GaAs tubes in great detail. The roll-up process is highly nonlinear at the beginning, linear at an intermediate stage, and ceases for long etching times. This self-limitation effect allows precise positioning of the tubes on a substrate surface. We investigate the formation of rolled-up nanotubes (RUNTs) on lithographically patterned substrates as a function of sacrificial layer thickness and tube diameter, and our results are well-described by a simple diffusion model. We fill well-positioned RUNTs of well-defined lengths with dye liquid and we observe strong fluorescence signal of these structures in the red spectral range. (C) 2004 American Institute of Physics.