Fig. 2. Au nanocube-based hybrid nanostructures made by plasmonic 2-photon polymerization.

a SEM image of the hybrid structure obtained with incident normal laser beam polarized along the cube diagonal (red arrow), λ = 780 nm. Image of the bare nanocube prior to photopolymerization is superimposed to highlight the polymer shell. b Finite difference time domain (FDTD) map of the field modulus |E| in the vicinity of the Au nanocube in polymer corresponding to case a, mid sectional horizontal plane, λ = 780 nm. c SEM image of the hybrid nanostructure obtained with incident polarization along the cube side edge (red arrow). Image of the bare nanocube prior to photopolymerization is superimposed to highlight the polymer shell. d FDTD map of the field modulus |E| in the vicinity of the Au nanocube in polymer corresponding to case c, mid sectional horizontal plane, λ = 780 nm. e Measured polymer elongation along the nanocube diagonal, case a, as a function of the normalized incident dose p used for plasmonic 2-photon polymerization, as determined by SEM analysis.