Cavity Enhanced Spectroscopy (CES) is an international meeting that brings together the community of physicists, chemists, atmospheric scientists, and engineers who conduct research in cavity enhanced spectroscopy and its many applications.

In these articles (published in Analyst and Soft Matter) we worked with Queen’s researchers Carlos Escobedo and Juan Gomez-Cruz on a new chemical sensor using surface plasmon polaritons. Following earlier work by Escobedo’s group we recorded the “extraordinary optical transmission” through a gold film that has a grid of nanometer-sized holes and monitored its change as the refractive index of an attached polymer film changes. the second article describes a new model for 1-dimensional diffusion kinetics based on the exact integration of Fick’s law.

Congratulations to Dr Swapnil Daxini, who defended his thesis “Light as a Probe: Harnessing Optical Resonances for Sensing Chemical Diffusion and Mechanical Strain” on December 9th, 2025.