Ferguson G S, Chaudhury M K, Sigal G B, Whitesides G M
Science. 1991 Aug 16;253(5021):776-8. doi: 10.1126/science.253.5021.776.
Thin gold films placed in contact on compliant elastomeric poly(dimethylsiloxane) supports weld together. This ;;cold welding'' is remarkable both for the low loads required and for the fact that it occurs under ambient laboratory conditions, conditions in which the gold surfaces are covered with films of weakly adsorbed organic impurities. These impurities are probably displaced laterally during the welding. Welding can be prevented by the presence of a self-assembled gold(I) alkylthiolate monolayer on the gold surfaces. The welded contacts have low electrical resistivity and can be made thin enough to transmit light. This system is a promising one with which to study interaction between interfaces.
置于柔顺的弹性聚二甲基硅氧烷支撑体上并相互接触的薄金膜会焊接在一起。这种“冷焊”现象值得关注，一方面所需的负载很低，另一方面它是在实验室环境条件下发生的，而此时金表面覆盖着弱吸附有机杂质的薄膜。这些杂质在焊接过程中可能会横向移动。金表面存在自组装的烷基硫醇金（I）单分子层时可防止焊接。焊接后的接触具有低电阻率，并且可以做得足够薄以透光。该系统是研究界面间相互作用的一个很有前景的体系。
