9 March 2017:
A new publication from CNBP researchers (lead author Jonathan Hall pictured) presents a new model for generating whispering gallery mode spectra for multilayer microspheres.
The work has just been reported in the journal ‘Optics Express’ and is accessible online.
Journal: Optics Express.
Title: Unified theory of whispering gallery multilayer microspheres with single dipole or active layer sources.
Authors: Jonathan M. M. Hall, Tess Reynolds, Matthew R. Henderson, Nicolas Riesen, Tanya M. Monro, and Shahraam Afshar.
Abstract: The development of a fast and reliable whispering gallery mode (WGM) simulator capable of generating spectra that are comparable with experiment is an important step forward for designing microresonators. We present a new model for generating WGM spectra for multilayer microspheres, which allows for an arbitrary number of concentric dielectric layers, and any number of embedded dipole sources or uniform distributions of dipole sources to be modeled. The mode excitation methods model embedded nanoparticles, or fluorescent dye coatings, from which normalized power spectra with accurate representation of the mode coupling efficiencies can be derived. In each case, the emitted power is expressed conveniently as a function of wavelength, with minimal computational load. The model makes use of the transfer-matrix approach, incorporating improvements to its stability, resulting in a reliable, general set of formulae for calculating whispering gallery mode spectra. In the specific cases of the dielectric microsphere and the single-layer coated microsphere, our model simplifies to confirmed formulae in the literature.
9 July 2015:
CNBP researchers Roman Kostecki, Georgios Tsiminis , Mel McDowall, Peipei Jia, Erik Schartner and Tess Reynolds were happy to host a visiting Youth ANZAAS tour at their laboratories at the University of Adelaide on July 9th, 2015.
Youth ANZAAS (organised by the Australian and New Zealand Association for the Advancement of Science) is an annual residential international forum for science students in Years 10 to 12. Every year, students from each State and Territory are selected to participate in science activities and experiences over a period of a week.
These high achieving students with eager minds were excited to be shown around the working CNBP laboratories, and learnt more about the research that is being undertaken by the Centre, from the lectures that each researcher provided.
7-12 February 2015: Conference Presentations
Dr Alex Francois and PhD students Tess Reynolds and Jonathan Hall presented three papers at SPIE West
Jonathan Hall, Shahraam Afshar, Matthew Henderon, Alexandre Francois, Tess Reynolds, Nicolas Riesen and Tanya Monro, “Predicting the whispering gallery mode spectra of microresonators,” SPIE LASE, 9343-71 (2015)
Reynolds, A. Francois, M.R. Henderson, S.J. Nicholls, T.M Monro “Optimization of Whispering Gallery Mode sensor design for applications in biosensing,” SPIE BIOS, 9315-19 (2015)
Alexandre François, Nicolas Riesen, Hong Ji, Shahraam Afshar Vahid, Tanya M. Monro “Whispering-gallery mode lasers for biosensing: Reducing the lasing threshold,” SPIE LASE, 9343-66 (2015)
9 January 2015: Publication
Article: A Fiber-Tip Label-Free Biological Sensing Platform: A Practical Approach toward In-Vivo Sensing
Alexandre François, Tess Reynolds and Tanya M. Monro
Sensors 2015, 15(1), 1168-1181; doi:10.3390/s150101168
the full article can be downloaded here
30 June – 2 July 2014: Poster Award
Congratulations to Tess Reynolds, Physics PhD student, for winning the 5th International NanoMedicine Conference Bioconjugate Chemistry Award for Excellence in Nanomedicine Research Poster.