A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy
The growth of Pd on WO3(001) at room temperature has been studied by scanning tunnelling microscopy. Thermally evaporated Pd grows on WO3(001) c(2 × 2) as truncated hemispherical nanoparticles whose mean diameter and height increase with increasing Pd coverage. There is some indication of preferenti...
| Asıl Yazarlar: | , |
|---|---|
| Materyal Türü: | Journal article |
| Dil: | English |
| Baskı/Yayın Bilgisi: |
Elsevier
2000
|
| _version_ | 1826298524239659008 |
|---|---|
| author | Dixon, R Egdell, R |
| author_facet | Dixon, R Egdell, R |
| author_sort | Dixon, R |
| collection | OXFORD |
| description | The growth of Pd on WO3(001) at room temperature has been studied by scanning tunnelling microscopy. Thermally evaporated Pd grows on WO3(001) c(2 × 2) as truncated hemispherical nanoparticles whose mean diameter and height increase with increasing Pd coverage. There is some indication of preferential nucleation of clusters at step edges and at boundaries between c(2 × 2) and p(1 × 1) rafts on the (001) surface. Thermal annealing of nanoparticle covered surfaces at 873 K leads to agglomeration of the Pd clusters into large clumps with dimensions in excess of 10 nm, leaving bare terrace areas on the WO3(001) substrate with an increased proportion of reduced p(1 × 1) areas. The Pd nanoparticles are susceptible to tip induced movement, which can be used to sweep clusters out of a chosen area or to selectively remove individual clusters from a surface. |
| first_indexed | 2024-03-07T04:48:10Z |
| format | Journal article |
| id | oxford-uuid:d4093aec-9f8a-446c-9c94-1fa19e08babd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:48:10Z |
| publishDate | 2000 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:d4093aec-9f8a-446c-9c94-1fa19e08babd2022-03-27T08:15:29ZA study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d4093aec-9f8a-446c-9c94-1fa19e08babdEnglishSymplectic Elements at OxfordElsevier2000Dixon, REgdell, RThe growth of Pd on WO3(001) at room temperature has been studied by scanning tunnelling microscopy. Thermally evaporated Pd grows on WO3(001) c(2 × 2) as truncated hemispherical nanoparticles whose mean diameter and height increase with increasing Pd coverage. There is some indication of preferential nucleation of clusters at step edges and at boundaries between c(2 × 2) and p(1 × 1) rafts on the (001) surface. Thermal annealing of nanoparticle covered surfaces at 873 K leads to agglomeration of the Pd clusters into large clumps with dimensions in excess of 10 nm, leaving bare terrace areas on the WO3(001) substrate with an increased proportion of reduced p(1 × 1) areas. The Pd nanoparticles are susceptible to tip induced movement, which can be used to sweep clusters out of a chosen area or to selectively remove individual clusters from a surface. |
| spellingShingle | Dixon, R Egdell, R A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy |
| title | A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy |
| title_full | A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy |
| title_fullStr | A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy |
| title_full_unstemmed | A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy |
| title_short | A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy |
| title_sort | study of the growth and mobility of pd nanoclusters on wo3 001 by scanning tunnelling microscopy |
| work_keys_str_mv | AT dixonr astudyofthegrowthandmobilityofpdnanoclustersonwo3001byscanningtunnellingmicroscopy AT egdellr astudyofthegrowthandmobilityofpdnanoclustersonwo3001byscanningtunnellingmicroscopy AT dixonr studyofthegrowthandmobilityofpdnanoclustersonwo3001byscanningtunnellingmicroscopy AT egdellr studyofthegrowthandmobilityofpdnanoclustersonwo3001byscanningtunnellingmicroscopy |