Optical properties of polymer nanocomposites

Bulletin of materials science

J K Basu¹  S Srivastava¹  M Haridas¹ 

[1]Department of Physics, Soft Nanomaterials Physics Laboratory, Indian Institute of Science, Bangalore 560 012, India$$Department of Physics, Soft Nanomaterials Physics Laboratory, Indian Institute of Science, Bangalore 560 012, IndiaDepartment of Physics, Soft Nanomaterials Physics Laboratory, Indian Institute of Science, Bangalore 560 012, India$$

关键词: Polymer nanocomposites;    optical properties;    metal nanocomposites.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Nanomaterials have emerged as an area of interest motivated by potential applications of these materials in light emitting diodes, solar cells, polarizers, light �?? stable colour filters, optical sensors, optical data communication and optical data storage. Nanomaterials are of particular interest as they combine the properties of two or more different materials with the possibility of possessing novel mechanical, electronic or chemical behaviour. Understanding and tuning such effects could lead to hybrid devices based on these nanocomposites with improved optical properties. We have prepared polymer nanocomposites of well-defined compositions and studied the optical properties of powders and their thin films. UV-vis absorption spectroscopy on nanocomposite powders and spectroscopic ellipsometry measurements on thin films was used to study the effect of interfacial morphology, interparticle spacing and finite size effects on optical properties of nanocomposites. Systematic shift in the imaginary part of the dielectric function can be seen with variation in size and fraction of the gold nanoparticle. The thickness of the film also plays a significant role in the tunability of the optical spectra.

【 授权许可】

Unknown