Abstract
Two sets of gold nanoparticles (NP) embedded in amorphous BaTiO3 films were prepared by sol-gel method using spin coating. Sample (1) is having BaTiO3 sol with 0.025 gm of Chloroauric acid dissolved in 10 ml of propan-2-ol, while sample (2) is having 0.086 gm of Chloroauric acid in the same amount of propan-2-ol. The films have been deposited on various substrates like borosilicate glass and fused silica. TEM images show that the particles are of 5 and 10 nm in size for the two set of samples, and some are having elongated morphology. Optical absorption properties of these films reveal the substrate and size effect on localised surface plasmon resonance (SPR). It shows a marginal red shift in the plasmon resonance peak from 414 nm to 420 nm in the case of sample (1) and 566 nm to 568 nm for sample (2) as the substrate changed from borosilicate glass to fused silica. It also shows red shift in Plasmon peak as the size increases from 5 to 10 nm and coincides with Mie explanation for the shift with size.
Highlights
Nanoparticles (NPs) attracted interest of research community because of their drastic change in various physical properties like conductivity, magnetism, optical properties etc
The charge transfer from gold NP to the dielectric matrix is very important in explaining unusual properties like magnetism and enhanced nonlinearity in gold NP embedded dielectric films
The change in dielectric constant of host will give the shift in surface plasmon resonance
Summary
Nanoparticles (NPs) attracted interest of research community because of their drastic change in various physical properties like conductivity, magnetism, optical properties etc. The study of capped nanoparticles with different chemicals is of interest in fundamental as well as in application point of view The charge transfer from gold NP to the dielectric matrix is very important in explaining unusual properties like magnetism and enhanced nonlinearity in gold NP embedded dielectric films. Apart from this the gold NP embedded dielectric films (Au embedded TiO2) are very useful in understanding the laser induced damage mechanism [6]. The substrate effect on the localised surface plasmon resonance of gold NPs dispersed BaTiO3 film. There are some colloidal methods which can give control over the size but not on interparticle separation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
