Aotmane En Naciri

Abstract In this Letter, we propose a new, to the best of our knowledge, approach to determine the shape distribution of gold (Au) nanorods from real-time extinction spectroscopy measurements. This method is based on the linearization of the shape distribution effective medium theory (SDEMT). The aspect ratio distribution of Au colloids is obtained in a few tens of ms without any a priori information on the distribution.

Here, we report for the first time a facile and fast one-step strategy to fabricate monodisperse gold nanocubes (GNCs) by spin-coating of a gold precursor-loaded PMMA dispersion on N-doped silicon. A vapor induced phase separation allows the PMMA self-assembly into a nanoporous film including the GNCs in its holes. A control of size and shape until obtaining monodisperse GNCs was achieved by tailoring the concentration of gold precursor.