Huang Y, Duan X, Wei Q, Lieber C M
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.
Science. 2001 Jan 26;291(5504):630-3. doi: 10.1126/science.291.5504.630.
One-dimensional nanostructures, such as nanowires and nanotubes, represent the smallest dimension for efficient transport of electrons and excitons and thus are ideal building blocks for hierarchical assembly of functional nanoscale electronic and photonic structures. We report an approach for the hierarchical assembly of one-dimensional nanostructures into well-defined functional networks. We show that nanowires can be assembled into parallel arrays with control of the average separation and, by combining fluidic alignment with surface-patterning techniques, that it is also possible to control periodicity. In addition, complex crossed nanowire arrays can be prepared with layer-by-layer assembly with different flow directions for sequential steps. Transport studies show that the crossed nanowire arrays form electrically conducting networks, with individually addressable device function at each cross point.
一维纳米结构，如纳米线和纳米管，代表了电子和激子高效传输的最小维度，因此是功能性纳米级电子和光子结构分层组装的理想构建块。我们报告了一种将一维纳米结构分层组装成定义明确的功能网络的方法。我们表明，通过控制平均间距，纳米线可以组装成平行阵列，并且通过将流体对准与表面图案化技术相结合，还可以控制周期性。此外，可以通过对连续步骤采用不同流动方向的逐层组装来制备复杂的交叉纳米线阵列。输运研究表明，交叉纳米线阵列形成导电网络，每个交叉点都具有可单独寻址的器件功能。
