Influence of concentration and heating of gold, platinum, and silver nanoparticles on the thresholds of non-resonant generation in heterogeneous planar active media

2018 ◽  
Author(s):  
Nikolay S. Panamarev ◽  
Valeriy A. Donchenko ◽  
Аlexey A. Zemlyanov ◽  
Roman V. Ryambov ◽  
Аlina V. Trifonova
Keyword(s):  
Silver Nanoparticles ◽  
Active Media ◽  
Resonant Generation ◽  
Gold Platinum

Thresholds of non-resonant generation in heterogeneous planar active media

2018 ◽  
Author(s):  
Nikolay S. Panamarev ◽  
Dmitriy V. Apeksimov ◽  
Valeriy A. Donchenko ◽  
Alexey A. Zemlyanov ◽  
Ignatiy V. Samokhvalov ◽  
...  
Keyword(s):  
Active Media ◽  
Resonant Generation

Synthesis, performance and growth mechanism of silver nanoparticle coated SERS fiber probe

2019 ◽  
Vol 107 (3) ◽  
pp. 305
Author(s):  
Mengmei Geng ◽  
Yuting Long ◽  
Tongqing Liu ◽  
Zijuan Du ◽  
Hong Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Absorption Spectrum ◽  
Reaction Time ◽  
Growth Mechanism ◽  
Fiber Optic ◽  
Fiber Optic Probe ◽  
Visible Absorption ◽  
Fiber Probe ◽  
Surface Enhanced Raman ◽  
Optic Probe

Surface-enhanced Raman Scattering (SERS) fiber probe provides abundant interaction area between light and materials, permits detection within limited space and is especially useful for remote or in situ detection. A silver decorated SERS fiber optic probe was prepared by hydrothermal method. This method manages to accomplish the growth of silver nanoparticles and its adherence on fiber optic tip within one step, simplifying the synthetic procedure. The effects of reaction time on phase composition, surface plasmon resonance property and morphology were investigated by X-ray diffraction analysis (XRD), ultraviolet-visible absorption spectrum (UV-VIS absorption spectrum) and scanning electron microscope (SEM). The results showed that when reaction time is prolonged from 4–8 hours at 180 °C, crystals size and size distribution of silver nanoparticles increase. Furthermore, the morphology, crystal size and distribution density of silver nanoparticles evolve along with reaction time. A growth mechanism based on two factors, equilibrium between nucleation and growth, and the existence of PVP, is hypothesized. The SERS fiber probe can detect rhodamin 6G (R6G) at the concentration of 10−6 M. This SERS fiber probe exhibits promising potential in organic dye and pesticide residue detection.

Polarization waves and super-radiance in active media

1989 ◽  
Vol 159 (10) ◽  
pp. 193 ◽  
Author(s):  
V.V. Zheleznyakov ◽  
Vit V. Kocharovskii ◽  
Vlad V. Kocharovskii
Keyword(s):  
Active Media

The Effect of Silver Nanoparticles on Blood Cells in Rats

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
S. Rezaei-Zarchi ◽  
M. Taghavi-Foumani ◽  
S. Razavi Sheshdeh ◽  
M. Negahdary ◽  
G. Rahimi
Keyword(s):  
Silver Nanoparticles ◽  
Blood Cells
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