稀释聚合物对无序的延迟
Delay of Disorder by Diluted Polymers
摘要：
我们研究了稀释的柔性聚合物对无序毛细波态的影响。在染色的水糖溶液和低粘度硅油的界面处产生波。这允许时空傅立叶光谱的定量测量。从平坦界面第一次分叉后的主要图案是正方形。随着驱动强度的增加，我们观察到正方形图案的熔化。它被一个弱的湍流叶栅所取代。在水层中加入少量聚合物不影响临界加速度，但使无序转变向更高的驱动强度移动，并抑制了短波长-高频波动。
英文摘要：
We study the effect of diluted flexible polymers on a disordered capillary wave state. The waves are generated at an interface of a dyed water sugar solution and a low viscous silicon oil. This allows for a quantitative measurement of the spatio-temporal Fourier spectrum. The primary pattern after the first bifurcation from the flat interface are squares. With increasing driving strength we observe a melting of the square pattern. It is replaced by a weak turbulent cascade. The addition of a small amount of polymers to the water layer does not affect the critical acceleration but shifts the disorder transition to higher driving strenghs and the short wave length - high frequency fluctuations are suppressed.
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