The authors report on fast phase imaging in liquids achieved by fast phase detection in rapid scan atomic force microscopy. The phase-shift images clearly revealed the compositional heterogeneities in styrene-butadiene-styrene block copolymer films even at an imaging rate of less than 100 ms/frame. They found that the contrast variations of the phase images depended on the phase-shift detection timing within a single oscillation cycle. The phase contrast increased as the tip approached the surface in each oscillation during imaging, while it decreased as the tip withdrew from the surface.
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机译:作者报告了通过快速扫描原子力显微镜中的快速相检测实现的液体快速相成像。即使在小于100 ms /帧的成像速率下,相移图像也清楚地揭示了苯乙烯-丁二烯-苯乙烯嵌段共聚物薄膜中的组成异质性。他们发现,相位图像的对比度变化取决于单个振荡周期内的相移检测时间。在成像过程中的每次振荡中,当尖端接近表面时,相位对比度会增加,而随着尖端从表面退出,相位对比度会降低。
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