Optical Investigation of Thermal Energy Exchanges Between a Single Nano-Object and Its Environment*

Ultrafast optical spectroscopy methods have been shown to enable quantitative investigations of the electronic, vibrational and thermal properties of nano-objects. We have extended this approach to the study of the thermal energy exchange mechanisms of a single nano-object with its environment, thus opening the way to their precise characterization as a function of the particle morphology and the local 3D or 2D environment.