Influence of the thermal evolution of Au nanoparticles induced by ion implantation on the reflectivity of multilayer structures

Abstract

The Au/SiO2-SiO2 multilayer periodic structure was fabricated by ion implantation and radio-frequency magnetron sputtering. We proposed a scheme to change the refractive index of the nanocomposite layer based on the important influence of the annealing temperatures on the Au nanoparticles (NPs), and analyzed the changes in the size, volume fraction and dipolar interaction factor of the Au NPs at different temperatures. As a result, the reflectivity of the sample with four periods increased from 65.0% to 82.6% at 800 °C. This method is promising as an application to prepare large-scale photonic integrated circuits as a small size but efficient Bragg reflector.

Investigation of the Optical Nonlinearity for Au Plasmonic Nanoparticles Based on Ion Implantation

“…To demonstrate clearly, ion distribution was calculated using the Stopping and Range of Ions in Matter (SRIM) software (http://www.srim.org/) [20,21], which can be used to simulate and calculate the approximate distribution of Au ion concentration within the silica layer, as shown in Figure 1c. Following the implantation of Au ions, these discrete ions aggregate to form Au NPs in medium [22,23]. The distribution of Au NPs in silica exhibits a Gaussian distribution, with the majority of the NPs located approximately 30-60 nm beneath the surface of the silica.…”

Cyanide-free electrolyte for Au/Co–Au nano-multilayer electrodeposition utilising 5,5-dimethylhydantoin as a complexing agent

“…1,2 The performance of gold cobalt alloy coating is adjustable with the increase in cobalt content, which breaks the traditional idea of uniform coating based on gold. 3–5 It makes the structure and function of the coating develop to diversification. 6–9 Development of new structure and functional coatings has become a new focus of Au–Co alloy research.…”