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High resolution molecular chain imaging of a poly(vinylidenefluoride-trifluoroethylene) crystal using force modulation microscopy

机译:使用力调制显微镜对聚偏二氟乙烯-三氟乙烯晶体进行高分辨率分子链成像

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摘要

Topographic imaging or friction force imaging of a polymer lamella in molecular resolution using atomic force microscopy (AFM) is significantly disturbed by the existence of an amorphous layer on top of the crystal. In this paper, we report the first successful molecular imaging of a polymer lamella using force modulation microscopy (FMM), which is capable of imaging crystalline molecules even if the crystal surface is covered with an amorphous layer. Molecular chains of a poly(vinylidenefluoride-trifluoroethylene)(P(VDF -TrFE)) lamella under an amorphous layer were clearly imaged using FMM at room temperature in ambient conditions. The origins and mechanisms of the image contrast in molecular resolution are also discussed.
机译:使用原子力显微镜(AFM)以分子分辨率对聚合物薄层进行形貌成像或摩擦力成像会因晶体顶部存在无定形层而受到严重干扰。在本文中,我们报告了使用力调制显微镜(FMM)对聚合物薄片进行的首次成功分子成像,该成像即使在晶体表面覆盖有非晶层的情况下也能够成像晶体分子。在室温下使用FMM在室温下清晰地成像了非晶层下的聚偏二氟乙烯-三氟乙烯(P(VDF -TrFE))层的分子链。还讨论了分子分辨率中图像对比度的起源和机理。

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