High-resolution imaging of (100) kyanite surfaces using friction force microscopy in water

SURFACE SCIENCE

卷:635

Article

Pimentel, Carlos^1,2  Gnecco, Enrico³  Pina, Carlos M.^1,2 

[1] Univ Complutense Madrid, Dept Cristalog & Mineral, E-28040 Madrid, Spain

[2] Inst Geociencias UCM CSIC, E-28040 Madrid, Spain

[3] Univ Autonoma Madrid, IMDEA Nanociencia, Inst Madrileno Estudios Avanzados Nanociencia, E-28049 Madrid, Spain

关键词: Kyanite;    Friction force microscopy;    Mineral surfaces;    Nanotribology;    Aqueous environment;   

DOI  :  10.1016/j.susc.2015.01.008

来源: Elsevier

【 摘 要 】

In this paper, we present high-resolution friction force microscopy (FFM) images of the (100) face of kyanite (Al2SiO5) immersed in water. These images show an almost rectangular lattice presumably defined by the protruding oxygen of AlO6 polyhedra. Surface lattice parameters measured on two-dimensional fast Fourier transform (2D-FFT) plots of recorded high-resolution friction maps are in good agreement with lattice parameters calculated from the bulk mineral structure. Friction measurements performed along the [001] and [010] directions on the kyanite (100) face provide similar friction coefficients mu approximate to 0.10, even if the sequences of AlO6 polyhedra are different along the two crystallographic directions. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free