| Combined Effect of Surface Tension, Gravity and van der Waals Force Induced by a Non-Contact Probe Tip on the Shape of Liquid Surface |
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| 作者姓名： | 刘楠 白以龙 夏蒙棼 柯孚久 |
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| 作者单位： | [1]StateKeyLaboratoryofNonlinearMechanics,InstituteofMechanics,ChineseAcademyofSciences,Beijing100080／／GraduateSchooloftheChineseAcademyofSciences,Beijing100049 [2]StateKeyLaboratoryofNonlinearMechanics,InstituteofMechanics,ChineseAcademyofSciences,Beijing100080 [3]StateKeyLaboratoryofNonlinearMechanics,InstituteofMechanics,ChineseAcademyofSciences,Beijing100080／／DepartmentofPhysics,PekingUniversity,Beijing100871 [4]StateKeyLaboratoryofNonlinearMechanics,InstituteofMechanics,ChineseAcademyofSciences,Beijing100080／／DepartmentofAppliedPhysics,BeijingUniversityofAerospaceandAeronautics,Beijing100083 |
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| 摘 要： | Aiming at understanding how a liquid film on a substrate affects the atomic force microscopic image in experiments, we present an analytical representation of the shape of liquid surface under van der Waals interactionin duced by a non-contact probe tip. The analytical expression shows good consistence with the corresponding numerical results. According to the expression, we find that the vertical scale of the liquid dome is mainly gov-rned by a combination of van der Waals force, surface tension and probe tip radius, and is weekly related to gravity. However, its horizontal extension is determined by the capillary length.
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| 关 键 词： | 地心引力 表面压力 原子结构 显微结构 |
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