期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 262, 期 1, 页码 303-306出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0021-9797(03)00123-1
关键词
contact angle; atomic force microscope; hydrophobicity
Atomic force microscopy appears to be a useful tool for determining the contact angle for small particles. It is shown in this paper that the contact angle of a spherical polyethylene particle changes with the speed of the AFM piezoelectric translator. Such dynamic behavior of the contact angle and other uncertainties such as the position of the three-phase contact on the particle surface during bubble-particle interaction make it difficult to decide whether or not the AFM single-particle contact angle can be used to describe the hydrophobic state of the particle surface. (C) 2003 Elsevier Science (USA). All rights reserved.
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