KPFM/AFM imaging on TiO 2 (110) surface in O 2 gas

We have carried out high-speed imaging of the topography and local contact potential difference (LCPD) on rutile TiO (110) in O gas by atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM). We succeeded in KPFM/AFM imaging with atomic resolution at 1 frame min and observed the adsor...

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Bibliographic Details
Published in:Nanotechnology 2018-03, Vol.29 (10), p.105504
Main Authors: Arima, Eiji, Wen, Huan Fei, Naitoh, Yoshitaka, Li, Yan Jun, Sugawara, Yasuhiro
Format: Article
Language:English
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Summary:We have carried out high-speed imaging of the topography and local contact potential difference (LCPD) on rutile TiO (110) in O gas by atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM). We succeeded in KPFM/AFM imaging with atomic resolution at 1 frame min and observed the adsorbate on a hydroxylated TiO (110) surface. The observed adsorbate is considered to be oxygen adatoms (O ), hydroperoxyls (HO ), or terminal hydroxyls (OH ). After adsorption, changes in the topography and the LCPD of the adsorbate were observed. This phenomenon is thought to be caused by the charge transfer of the adsorbate. This technique has the potential to observe catalytic behavior with atomic resolution.
ISSN:0957-4484
1361-6528
DOI:10.1088/1361-6528/aaa62c