Ariel University Center of Samaria, The Department of Chemical Engineering and Biotechnology, 40700, POB 3, Ariel, Israel.
J Colloid Interface Sci. 2010 Mar 15;343(2):602-7. doi: 10.1016/j.jcis.2009.12.005. Epub 2009 Dec 6.
Large-scale self-organization occurring on the scale of dozens of micrometers in rapidly evaporated polymer solutions based on amorphous polymers and chlorinated solvents was studied. Heating the substrate from below destroys the patterning. This contradicts the idea that self-organization is due to the jump in surface tension caused by a temperature gradient (temperature-gradient-driven Marangoni instability). We relate the patterning to the concentration-gradient- driven effects.
研究了基于无定形聚合物和氯化溶剂的快速蒸发聚合物溶液中在数十微米尺度上发生的大规模自组织现象。从下方加热衬底会破坏图案。这与自组织是由于温度梯度引起的表面张力跳跃(温度梯度驱动的 Marangoni 不稳定性)的观点相矛盾。我们将图案与浓度梯度驱动的效应联系起来。