Electron induced nanoscale engineering of rutile TiO2 surfaces. (9th November 2018)
- Record Type:
- Journal Article
- Title:
- Electron induced nanoscale engineering of rutile TiO2 surfaces. (9th November 2018)
- Main Title:
- Electron induced nanoscale engineering of rutile TiO2 surfaces
- Authors:
- Humphrey, David S
Pang, Chi L
Chen, Qiao
Thornton, Geoff - Abstract:
- Abstract: Electron stimulated modifications of the rutile TiO2 (110) surface have been investigated using scanning tunnelling microscopy tip pulses and electron beam irradiation. Tip pulses on the 'as-prepared' surface induce local surface reconstruction and removal of surface hydroxyls in a region around the reconstruction. A defocused beam from an electron gun as well as tip pulses have been used to generate a number of oxygen deficient surfaces. All tip pulse features display an oval profile, which can be attributed to the anisotropic conductivity of the TiO2 (110) surface. A novel oxygen deficient phase with well-ordered defective 'nano-cracks' has been identified, which can be produced by either electron beam irradiation or low flash anneal temperatures (∼570 K). Annealing such surfaces to moderate temperatures (∼850 K) leads to mixed 1 × 1 and 1 × 2 surfaces, until now only achievable by annealing in oxygen or ageing by repeated sputter/anneal cycles. Heating to normal preparation temperatures (1000 K) reforms the clean, well-ordered 1 × 1 surface termination. Our results demonstrate the potential of electron induced processes to modify the oxygen composition and structure of the TiO2 (110) surface in a controllable and reversible way for selective surface patterning and surface reactivity modification.
- Is Part Of:
- Nanotechnology. Volume 30:Number 2(2019)
- Journal:
- Nanotechnology
- Issue:
- Volume 30:Number 2(2019)
- Issue Display:
- Volume 30, Issue 2 (2019)
- Year:
- 2019
- Volume:
- 30
- Issue:
- 2
- Issue Sort Value:
- 2019-0030-0002-0000
- Page Start:
- Page End:
- Publication Date:
- 2018-11-09
- Subjects:
- TiO2 -- STM -- reconstruction -- electron beam -- tip pulse -- surface structure -- point defects
Nanotechnology -- Periodicals
Nanotechnology -- Periodicals
Nanotechnology
Publications périodiques
Nanotechnologies
Periodicals
620.5 - Journal URLs:
- http://www.iop.org/Journals/na ↗
http://iopscience.iop.org/0957-4484/ ↗
http://ioppublishing.org/ ↗ - DOI:
- 10.1088/1361-6528/aae95b ↗
- Languages:
- English
- ISSNs:
- 0957-4484
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 19401.xml