Elucidation of the mechanism of the surface nano relief formation of azo-polymers using metallic tip enhanced near-field light

我发现，只有一个纵向电场(EZ)的单个光斑所产生的表面浮雕图案强烈依赖于薄膜厚度。在横向电场(Ex，y)的情况下没有观察到这种膜厚度依赖关系。我还成功地通过结合金属尖端增强和径向极化来诱导偶氮聚合物薄膜的聚合物纳米移动。我发现诱导的表面浮雕依赖于施加在聚合物表面的尖端力。认为尖端与聚合物表面之间的吸附作用力起着重要作用。

I found that the surface relief pattern induced by a single light spot having only a longitudinal electric field (Ez) was strongly dependent on the film thickness. Such a film thickness dependence was not observed in the case of a lateral electric field (Ex, y). I have also succeeded in inducing polymer nanomovement of an azo polymer film by combining metal tip enhancement and radial polarization. I found that the induced surface relief was dependent on the tip force which exerted on the polymer surface. It is considered that adsorption force between the tip end and the polymer surface plays an important role.