Thermoplasmonics: optical heating generated by irradiated plasmonic nanostructures

Thermoplasmonics for membrane fusion and membrane repair

We use light-heated nanoparticles to manipulate membranes and living cells with spatially localized thermal perturbations. This approach, known as thermoplasmonics, connects nanoscale optical heating with experimental membrane biology.

Our research includes the characterization of nanoparticle heating and the development of methods for controlled membrane damage, vesicle fusion and local changes in membrane phase behavior.

By combining thermoplasmonic manipulation with fluorescence microscopy, we can observe how membranes and associated proteins respond to a defined perturbation. Applications include investigating plasma-membrane repair, studying protein organization in membranes, and engineering interactions between synthetic vesicles and cell-derived membranes.

We develop these methods both as tools for biological discovery and as a way to investigate the physical processes underlying membrane remodeling.

 

Examples of thermoplasmonics for biophysics and biology. From phototherapy of prostate using gold nanoschells to ultra fast PCR or membrane fusion.

Nanoparticle absorption for a given wavelength  can be tuned by  nanoparticle shape or by material composition