eprintid: 1469911 rev_number: 41 eprint_status: archive userid: 608 dir: disk0/01/46/99/11 datestamp: 2015-12-08 14:24:20 lastmod: 2021-09-19 23:44:52 status_changed: 2015-12-08 14:24:20 type: article metadata_visibility: show item_issues_count: 0 creators_name: Minato, T creators_name: Kajita, S creators_name: Pang, CL creators_name: Asao, N creators_name: Yamamoto, Y creators_name: Nakayama, T creators_name: Kawai, M creators_name: Kim, Y title: Tunneling Desorption of Single Hydrogen on the Surface of Titanium Dioxide ispublished: pub divisions: UCL divisions: B04 divisions: C06 keywords: defect, manipulation, scanning tunneling microscopy, titanium dioxide note: This document is the Accepted Manuscript version of a ACS Nano, copyright © 2015 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acsnano.5b01607 abstract: We investigated the reaction mechanism of the desorption of single hydrogen from a titanium dioxide surface excited by the tip of a scanning tunneling microscope (STM). Analysis of the desorption yield, in combination with theoretical calculations, indicates the crucial role played by the applied electric field. Instead of facilitating desorption by reducing the barrier height, the applied electric field causes a reduction in the barrier width, which, when coupled with the electron excitation induced by the STM tip, leads to the tunneling desorption of the hydrogen. A significant reduction in the desorption yield was observed when deuterium was used instead of hydrogen, providing further support for the tunneling-desorption mechanism. date: 2015-07-09 official_url: http://dx.doi.org/10.1021/acsnano.5b01607 vfaculties: VMPS oa_status: green full_text_type: other language: eng primo: open primo_central: open_green article_type_text: Journal Article verified: verified_manual elements_source: PubMed elements_id: 1042243 doi: 10.1021/acsnano.5b01607 language_elements: ENG lyricists_name: Pang, Chi lyricists_id: CLPAN40 full_text_status: public publication: ACS Nano volume: 9 number: 7 pagerange: 6837-6842 citation: Minato, T; Kajita, S; Pang, CL; Asao, N; Yamamoto, Y; Nakayama, T; Kawai, M; Minato, T; Kajita, S; Pang, CL; Asao, N; Yamamoto, Y; Nakayama, T; Kawai, M; Kim, Y; - view fewer <#> (2015) Tunneling Desorption of Single Hydrogen on the Surface of Titanium Dioxide. ACS Nano , 9 (7) pp. 6837-6842. 10.1021/acsnano.5b01607 <https://doi.org/10.1021/acsnano.5b01607>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/1469911/1/Manuscript.pdf document_url: https://discovery.ucl.ac.uk/id/eprint/1469911/2/ACS%20nano%20final%20SI.pdf