Vakarelski Ivan U, Chan Derek Y C, Nonoguchi Takashi, Shinto Hiroyuki, Higashitani Ko
Department of Chemical Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
Phys Rev Lett. 2009 Feb 6;102(5):058303. doi: 10.1103/PhysRevLett.102.058303. Epub 2009 Feb 4.
Large interconnected gold wire structures ( approximately cm;{2}) of different topologies have been made by the drying of a gold nanoparticle suspension that has formed a connected network of liquid bridges in the interstices between a 2D crystalline layer of latex particles and a substrate. Slow evaporation of the suspending medium assembles the nanoparticles into a periodic or disordered conducting network of micrometer thick gold wires on the substrate. The presence of surfactants in the suspension is critical to maintaining the stability of the liquid bridge network during the evaporation process.
通过干燥金纳米颗粒悬浮液制成了具有不同拓扑结构的大型互连金线结构（约2平方厘米），该悬浮液在乳胶颗粒的二维晶体层与基底之间的间隙中形成了液桥连接网络。悬浮介质的缓慢蒸发将纳米颗粒组装成基底上微米厚的金线周期性或无序导电网络。悬浮液中表面活性剂的存在对于在蒸发过程中维持液桥网络的稳定性至关重要。
