Optical, thermal and dielectric studies of silver-silica nanoparticles synthesized via sol-gel technique
Silver-silica nanocomposites (Ag-Si02NCs), with unique properties such as hi~hlY resonant particle plasmons, conductivity and potential applications in optics and varl°t nanoelectronics are very attractive materials for sensing probes in biotechnology. Ag-Si02J>:l ~ with various compositions w...
| Main Authors: | , , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/15941/1/0001.pdf |
| Summary: | Silver-silica nanocomposites (Ag-Si02NCs), with unique properties such as hi~hlY
resonant particle plasmons, conductivity and potential applications in optics and varl°t
nanoelectronics are very attractive materials for sensing probes in biotechnology. Ag-Si02J>:l ~
with various compositions were synthesized through sol-gel technique. The morphology, opuca
and thermal stability of the nanocomposite were investigated and was compared with pure sol-gel t~
determine the effects of the nanoparticles. Transmission electron microscopy (TEM) confirmed tha
Si02 was encapsulated Ag with mean size of 30 nm. Uv-vis spectroscopy shows that the surface
plasmon resonance (SPR) peak show Ag-Si02 NCs were greatly reduce due to the Si02 particles~
The permittivity and refractive index were decreased as the composition of Ag was increased ad
composition of 60% silver. The real permittivity is negative along the visible region. The tren
stability of Ag-Si02NCs were increased with the increased amount of silver. |
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