Optical, thermal and dielectric studies of silver silica nanoparticles synthesized via sol gel technique

Taib, Taifunisyam and Mohamad, Souad A. and Johan, Mohd Rafie and Basirun, Wan Jefrey and Chin, Kim Ming and Chia, Chang Cherng and Tan, Jia Herng (2016) Optical, thermal and dielectric studies of silver silica nanoparticles synthesized via sol gel technique. In: 28th Regional Conference on Solid State Science Technology 2014 (RCSSST 2014), 25th – 27th November 2014, Cameron Highlands, Pahang.

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Abstract

Silver-silica nanocomposites (Ag-SiO2NCs), with unique properties such as highly resonant particle plasmons, conductivity and potential applications in optics and various nanoelectronics are very attractive materials for sensing probes in biotechnology. Ag-SiO2NCs with various compositions were synthesized through sol-gel technique. The morphology, optical and thermal stability of the nanocomposite were investigated and was compared with pure sol-gel to determine the effects of the nanoparticles. Transmission electron microscopy (TEM) confirmed that SiO2 was encapsulated Ag with mean size of 30 nm. Uv-vis spectroscopy shows that the surface plasmon resonance (SPR) peak show Ag-SiO2 NCs were greatly reduce due to the SiO2 particles. The permittivity and refractive index were decreased as the composition of Ag was increased at composition of 60% silver. The real permittivity is negative along the visible region. The trend stability of Ag-SiO2NCs were increased with the increased amount of silver.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	4072/65647 Conference held in 2014. Published in Trans Tech Publications Ltd in 2016. Index in SCOPUS in 2016. FS 20/9/2018
Uncontrolled Keywords:	dielectric properties, negative permittivity, refractive index, Silver Silica nanocomposite, sol-gel, various composition, thermal properties
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Centre for Foundation Studies Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Mr Taifunisyam Taib
Date Deposited:	20 Sep 2018 10:35
Last Modified:	20 Sep 2018 10:37
URI:	http://irep.iium.edu.my/id/eprint/65647

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