Droplet Lasers and Sensors

The ability of a microscopic droplet to act as a high quality cavity has led to advances in the analysis of aerosol dynamics and their interactions with the environment in recent years. This work draws on older studies in which dye-doped droplets could be turned into lasers. The challenge with such lasers is that the output power is very low and hence they are not terribly useful. They remain a solution searching for a problem [1].

In this project the goal is to examine the opportunities for droplet lasers in various spheres, incorporating the analysis of aerosols: looking at how aerosol droplets interact with optical fields, how they behave as they cool, and if differences of droplet chemistry (for example biofuel mixtures) can be measured in an enhanced manner using lasing.

In parallel to this, work will be carried out on new forms of droplet laser, especially liquid crystal lasers, and the project will be explored if these new system, which can encapsulate material within them can be productively used as a biosensor. This work will expand on the demonstration of a droplet laser containing biological material as the gain medium carried out by the McGloin group and collaborators at Koc University [2].

The project will involve the development of a droplet laser system comprising optical manipulation techniques, quantitative phase imaging, pulsed laser systems and spectroscopy analysis as well as training in microfluidics, preparation of superhydrophobic surfaces and simple biological sample preparation. This is an exciting and open ended study with ample scope for the successful student to develop their own research questions and become a leader in this re-invigorated field.

For information on Evaluation and Criteria Guidance, Funding and Eligibility & How to Apply please click here - https://www.findaphd.com/search/PhDDetails.aspx?CAID=3380