Scattering dynamics relaxational absorption

Size and shape dependency is very important property in SPR [33, 34] of metal NPs observed in the range between 10 and 100 nm. The optical response of the SP absorption in these metal NPs can be demonstrated by the electron dynamics (electron-electron and electron-phonon scattering). It is found that the electron-phonon relaxation processes in NPs, which are smaller than the electron mean free path (MFP), are independent of their size or shape (Fig. 13.8). 

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