Contrast inversion of O adatom on rutile TiO2(110)-(1 x 1) surface by atomic force microscopy imaging

被引：11

作者：

Wen, Huan Fei ^{[1
,2
]}

Zhang, Quanzhen ^{[2
]}

Adachi, Yuuki ^{[2
]}

Miyazaki, Masato ^{[2
]}

Sugawara, Yasuhiro ^{[1
,2
]}

Li, Yan Jun ^{[2
]}

机构：

[1] North Univ China, Sch Instrument & Elect, Key Lab Instrumentat Sci & Dynam Measurement, Taiyuan 030051, Shanxi, Peoples R China

[2] Osaka Univ, Grad Sch Engn, Dept Appl Phys, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

来源：

APPLIED SURFACE SCIENCE | 2020年 / 505卷

基金：

日本学术振兴会; 美国国家科学基金会;

关键词：

Contrast inversion; O adatom; rutile TiO2 (110); Atomic force microscopy; MOLECULAR-OXYGEN; O-2; TIO2; DISSOCIATION; PHOTOCATALYSIS; IDENTIFICATION; DEFECTS; WATER; TIPS;

D O I：

10.1016/j.apsusc.2019.144623

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Oxygen adatom on ruffle TiO2(1 1 0)-(1 x 1) surface was imaged by atomic force microscopy (AFM) with atomic resolution. The atomic contrast inversion of oxygen adatom is dependent on tip-sample distance and can be obtained in both constant frequency shift and constant height mode. The origin of contrast inversion was analyzed, combining the effect of adsorbed species, feedback loop and tip apex structure. Experimental frequency shift versus distance curves around O adatom show that there is a turning-point in the constant frequency shift mode and a cross-point in the constant height mode. The repulsive force is thought to contribute to the contrast inversion of oxygen adatom. The present results show the origin of contrast inversion of oxygen adatom on rutile TiO2(1 1 0)-(1 x 1) surface and illustrate the importance of tip-height for the atomic contrast inversion of the surface adsorbate on the metal oxide surface.

引用

页数：6

共 51 条

[1] Tip-Induced Control of Charge and Molecular Bonding of Oxygen Atoms on the Rutile TiO2 (110) Surface with Atomic Force Microscopy [J].