Abstract：
Parallel lithographic deposition of polymers onto counterpart substrates is a widely applied surface manufacturing operation. However, polymers may only be soluble in organic solvents or are insoluble at all. Solvent evaporation during stamping may trigger hardly controllable capillarity-driven flow processes or phase separation, and polymer solutions may spread on the counterpart substrates. Solvent-free stamping of melts prevents these drawbacks. Here, a stamp design for the deposition of melts is devised, which intrinsically circumvents ink depletion. The stamps\' topographically patterned contact surfaces with protruding contact elements contacting the counterpart substrates consist of a nanoporous gold layer with a thickness of a few micrometers. The nanoporous gold layer is attached to a molten polymer layer, which is support for the nanoporous gold layer and ink reservoir at the same time. The nanoporous gold layer in turn stabilizes the topography of the stamps\' contact surfaces. As examples, arrays of submicron microdots of polystyrene and poly(vinylidenefluoride-trifluoroethylene) (PVDF-TrFE) are manufactured. The P(VDF-TrFE) microdots are partially crystalline, ferroelectric, and can be locally poled. It is envisioned that the methodology reported here can be automatized and may be extended to functional low-molecular-mass compounds, such as active pharmaceutical ingredients.
摘要：
聚合物在对应衬底上的平行光刻沉积是广泛应用的表面制造操作。然而,聚合物可能只溶于有机溶剂或根本不溶。冲压过程中的溶剂蒸发可能会触发难以控制的毛细管驱动的流动过程或相分离。和聚合物溶液可以铺展在对应的基材上。熔体的无溶剂冲压防止了这些缺点。这里,设计了用于沉积熔体的邮票设计，这在本质上避免了墨水消耗。具有接触配对基底的突出接触元件的印模形貌图案化接触表面由厚度为几微米的纳米多孔金层组成。纳米多孔金层附着在熔融聚合物层上，同时支持纳米多孔金层和储墨器。纳米多孔金层又使印模接触表面的形貌稳定。作为例子,制造聚苯乙烯和聚(偏氟乙烯-三氟乙烯)(PVDF-TrFE)的亚微米微点阵列。P（VDF-TrFE）微点是部分结晶的，铁电体,铁电体并且可以在本地进行极化。可以预见，此处报道的方法可以自动化，并且可以扩展到功能低分子质量化合物，如活性药物成分。
