CNRS Researcher (CRCN) · Institut Lumière Matière, Lyon
I use inelastic light scattering — Brillouin, Raman and low-frequency Raman — to probe the mechanical properties of matter across scales, from the acoustic vibrations of single metallic nanoparticles to the elasticity of living cells and tumors.
Research
Colloidal nanoparticles are tiny acoustic resonators whose eigenmodes (breathing, quadrupolar) lie in the GHz–THz range. Using ultra-low-frequency Raman and Brillouin scattering — down to the single particle — I study how size, shape, crystallinity and the surrounding ligand shell set the vibrational response of a nano-object.
When nanoparticles are brought into contact, their acoustic modes hybridize into collective vibrations that do not exist in the isolated objects. With plasmon-enhanced low-frequency Raman, I detect and model these couplings — from single dimers to larger assemblies — to understand how vibrations combine at the nanoscale.
Brillouin light scattering measures sound velocity, and therefore local elasticity, without contact. With the iLM biophysics team we develop fast Brillouin microscopy for cancer-cell spheroids and tissues, opening a label-free window on how mechanics drives biology and disease.
News
PhD defense — Mohammad Imran Shaik. 15 October 2026, 2:00 pm — Salle Fontannes (Amphithéâtre), Bâtiment Charles Darwin, entrée D, RdC, Campus LyonTech-La Doua, 8 avenue Claude Bernard, 69100 Villeurbanne.
New study on the vibrational dynamics of nanoparticle assemblies — a contact-to-connectivity crossover, in Soft Matter.
Separating water content from network dynamics in cell nuclei with Brillouin microscopy — Physical Review Letters.
Phonons in native and thiol-ligand-exchanged CdS nanoplatelets — J. Phys. Chem. C.
A practical Noise2Noise denoising pipeline for high-throughput Raman spectroscopy — Advanced Engineering Materials.
Publications
Liste à jour en octobre 2026 (65 articles). Dossier complet et automatiquement mis à jour sur ORCID et OpenAlex.
Funding
Total budget 6 M€ (1 M€ for iLM). Partners: UCBL, CNRS, NOSTICS, University of Groningen, CSIC, Universität Siegen, Middle East Technical University (2024).
Budget 70 k€.
Single nano-object study of the interaction between acoustic vibration and plasmon — towards low-frequency SERS. Budget 207 k€.
Measurement accuracy — mechanical properties of oxide nanoparticles. In charge of Raman/Brillouin on single oxide nanocubes under nano-indentation.
Role of poroelasticity in tumor dynamics using multiscale acoustic probing.
2D colloidal hetero-nanostructures (co-supervision of the PhD of Thi Thu Dung).
Supervision
On average one Master/undergraduate student per year.
Service & leadership
Contact
Institut Lumière Matière (iLM) — UMR 5306
Bâtiment Alfred Kastler, 10 rue Ada Byron
69622 Villeurbanne cedex, France
✉ jeremie.margueritat@univ-lyon1.fr
ORCID 0000-0003-2075-1875
ResearcherID I-1167-2012
Scopus ID 16550090800