| EPSRC Reference: |
EP/C001370/1 |
| Title: |
Atomic-scale studies of heteroepitaxial growth using in situ scanning tunnelling microscopy |
| Principal Investigator: |
Bell, Dr GR |
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| Department: |
Physics |
| Organisation: |
University of Warwick |
| Scheme: |
Overseas Travel Grants Pre-FEC |
| Starts: |
01 October 2004 |
Ends: |
31 May 2005 |
Value (£): |
5,449
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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The scanning tunnelling microscope (STM) is a powerful tool for the investigation of atomic-scale structures and nanometre-scale objects such as quantum dots (QDs). We intend to study a very important class of QDs using STM. These QDs are produced through a process of 'self-assembly' simply by depositing one type of semiconductor material on another (indium arsenide on gallium arsenide) in a process called molecular beam epitaxy (MBE). However, the atomic-scale processes governing the self-assembly are not well understood. The instrument we will employ to study QD self-assembly is unique worldwide in that the STM is fully integrated with the MBE system. It is based at the University of Tokyo Institute for Industrial Sciences and was designed by Dr. Shiro Tsukamoto, with whom the author has collaborated for several years. Conventional STM-MBE systems require the self-assembly process to be interrupted in order for the QDs to be imaged. Consequently, individual QDs cannot be followed through the entire growth process. We plan to follow the development of individual QDs at the atomic scale in order to elucidate the fundamental processes governing the self-assembly of semiconductor QDs. The grant will fund two visits by the author to Tokyo to perform these key experiments.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.warwick.ac.uk |