Overview
Topic status: In progress
An excited quantum dot (nano-scale piece of semiconductor) in vacuum de-excites by emitting a photon of light. When the quantum dot is placed near a piece of metal, it can de-excite by other decay mechanisms such as heating of the metal, and generation of electron waves known as plasmons (movement of the electron sea). The researcher will determine the probability of the quantum dot decaying into plasmons, for a quantum dot of emission wavelength 633 nm. The piece of metal will be a gold rectangular prism, and the study will be conducted for the rectangle having sharp and rounded corners.
Research activities
The main activities undertaken during this project involve working with simulations.
Expected outcomes
The results of the simulations will be compared to the results of experiments currently underway in the school of physics. It is hoped quantum dot-rectangular prism devices can be used to create optical circuits, and eventually quantum circuits. However it is thought that rounding of the prism corners will significantly affect the probability of the quantum dot generating plasmons. This project will provide physical insight into the effect of rounded corners.
Duration of project: 6 weeks, timing is flexible (mid-November 2011 – end of January 2012); number of hours: 36 hours per week
- Study level
- Vacation research experience scholarship
- Supervisors
- QUT
- Organisational unit
Science and Engineering Faculty
- Research area
- Contact
- Please contact the supervisor for enquiries.
Dr Kristy Vernon
