To better understand the formation, composition and evolution of the atmospheres of terrestrial planets, scientists at LIPhy have developed spectrometers using optical cavity spectroscopy (CRDS). Their high sensitivity enables them to accurately record the absorption spectra of various molecules of atmospheric and planetary interest, such as dihydrogen, water or methane, mixed with carbon dioxide.

La Forge, LIPhy's shared assembly workshop, was inaugurated on January 31, 2025.

Bubbles are ubiquitous in many research applications, from ultrasound imaging to understanding volcanic eruptions. They are also excellent acoustic resonators, being very small in size compared to the wavelength of the sound they emit. These resonant sound waves contain information about the mechanical properties of materials in the immediate vicinity of the bubble. In a recent publication in Nature Communications, a collaboration between LIPhy's Optima and Move teams proposes to exploit this phenomenon to image a sample by moving a bubble in its vicinity.

Jocelyn Etienne (MC2, LIPhy)

Alexander V. Neimark (Rutgers University, USA)

Basile Radisson (MOVE, LIPhy)