scholarly journals Optical properties of antimony-borate glass rods co-doped with Eu3+/Ag+ ions

2021 ◽  
Vol 13 (4) ◽  
pp. 94
Author(s):  
Karol Czajkowski
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Surface Plasmon ◽  
Borate Glass ◽  
Silver Ions ◽  
Silver Particles ◽  
Santa Cruz ◽  
Glass Rods ◽  
Glass Matrices ◽  
Co Doped

This paper presents the results of research on the luminescent properties of antimony-borate glass rods doped with europium and silver ions. The reduction of silver ions to the form of nanoparticles was carried out and the occurrence of localized plasmon resonance was demonstrated, which caused changes in the Eu3+ luminescence signal at a wavelength of 613 nm. The effect of the concentration of silver ions dopant at a constant content of europium ions on the luminescence and absorption characteristics of the produced samples was investigated. In the examined doping range, no large dependencies of spectral changes as a function of the concentration of silver ions were found. A clear quenching of the luminescence was observed due to the heating time of the doped glass matrices for the energy transition (5D0 → 7F2). Full Text: PDF ReferencesS. Kuzman, J. Perisa, V. Dordevic, I. Zekovic, I. Vukoje, Z. Antic and M. D. Dramicanin, "Surface Plasmon Enhancement of Eu3+ Emission Intensity in LaPO4/Ag Nanoparticles", Materials 13, 3071 (2020). CrossRef V.P. Prakashan, M.S. Sajna, G. Gejo, M.S. Sanu, A.C. Saritha, P.R. Biju, J. Cyriac and N.V. Unnikrishan, "Surface Plasmon Assisted Luminescence Enhancement of Ag NP/NWs-Doped SiO2-TiO2-ZrO2:Eu3+ Ternary System", Plasmonics 14, 673 (2019). CrossRef O. Malta, P. Santa-Cruz, G. Sa and F. Auzel, "Fluorescence enhancement induced by the presence of small silver particles in Eu3+ doped materials", J. Lumin., 33, 261 (1985). CrossRef O. Malta, P. Santa-Cruz, G. Sa and F. Auzel, "Time evolution of the decay of the 5Do level of Eu3+ in glass materials doped with small silver particles", Chem. Phys. Lett, 116, 396 (1985). CrossRef J. Zmojda, M. Kochanowicz, P. Miluski et al., "The influence of Ag content and annealing time on structural and optical properties of SGS antimony-germanate glass doped with Er3+ ions", Journal of Molecular Structure 1160, 428 (2018). CrossRef Ki Young Kim, Plasmonics: Principles and Applications (Croatia, InTechOpen 2012) CrossRef M.R. Dousti, M.R. Sahar, S.K. Ghoshal et al., "Up-conversion enhancement in Er3 +-Ag co-doped zinc tellurite glass: Effect of heat treatment", Journal of Non-Crystalline Solids 358, 2939 (2012). CrossRef I. Soltani, S. Hraiech, K. Horchani-Naifer et al., "Effect of silver nanoparticles on spectroscopic properties of Er3+ doped phosphate glass", Optical Materials 46, 454 (2015). CrossRef R. Schneider, E.A. de Campos, J.B.S. Mendes, J.F. Felix, P.A. Santa-Cruz, "Lead–germanate glasses: an easy growth process for silver nanoparticles and their promising applications in photonics and catalysis", RSC Advances 7 (66), 41479 (2017). CrossRef

scholarly journals Unconventional Optical Response in Engineered Au-Ag Nanostructures

2019 ◽  
Author(s):  
Dev Kumar Thapa ◽  
Subham Kumar Saha ◽  
Guru Pratheep Rajasekar ◽  
Biswajit Bhattacharyya ◽  
Rekha Mahadevu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Plasmon ◽  
Mie Theory ◽  
Localized Surface Plasmon ◽  
Silver Particles ◽  
Temperature Dependent ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Diamagnetic State

This article describes the optical properties of nanostructures composed of silver particles embedded into a gold matrix. In previous studies these materials were shown to exhibit temperature dependent transitions to a highly conductive and strongly diamagnetic state. Here we describe the anomalous optical properties of these nanostructures. Most notably, these materials fail to obey Mie theory and exhibit an unconventional resonance with a maximum at about 4 eV, while the usual gold and silver localized surface plasmon resonances are suppressed. This effect implies a significant deviation from the bulk dielectric functions of gold and silver. We further resolved this resonance into its absorbance and scattering sub-parts. It is observed that the resonance is largely comprised of scattering, with negligible losses even at ultraviolet frequencies.

scholarly journals Optical Properties of Silver Nanoparticles for Surface Plasmon Resonance (SPR)-Based Biosensor Applications

2015 ◽  
Vol 06 (08) ◽  
pp. 1071-1076 ◽  
Author(s):  
Lufsyi Mahmudin ◽  
Edi Suharyadi ◽  
Agung Bambang Setio Utomo ◽  
Kamsul Abraha
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Biosensor Applications

The Efficiency of PVA Based Nanofiber Textile PVA Doped Silver Particles against Mold

2017 ◽  
Vol 731 ◽  
pp. 10-14
Author(s):  
Tereza Houšková ◽  
Zuzana Rácová ◽  
Pavla Ryparová
Keyword(s):  
Silver Nanoparticles ◽  
Construction Materials ◽  
Silver Ions ◽  
Main Topic ◽  
Biological Degradation ◽  
Silver Particles ◽  
Experiment Research ◽  
Modern Methods ◽  
Chemical Products ◽  
Nanofiber Textile

Mold and algae are primitive organisms that cause biological degradation of many type of construction materials. Subsequent remediation of damaged structures is very demanding and it is therefore necessary to take into consideration the high preventive protection against these microorganisms. In practice, as the prevention it is often use chemical products as a classical biocidal compounds. One of the modern methods of protection investigate the use of nanotechnology with biocidal ingredients, which is the main topic of this article. Silver ions and silver nanoparticles were selected as a biocide for the experiment. Research revealed that the silver in the form of nanoparticles and ions have biocidal effect against fungi and algae and it is conform to use theoretically possible them as a preventive protection against mold and algae.

Structural and optical properties of antimony-germanate-borate glass and glass fiber co-doped Eu3+ and Ag nanoparticles

2018 ◽  
Vol 201 ◽  
pp. 1-7 ◽  
Author(s):  
Jacek Zmojda ◽  
Marcin Kochanowicz ◽  
Piotr Miluski ◽  
Agata Baranowska ◽  
Wojciech A. Pisarski ◽  
...  
Keyword(s):  
Optical Properties ◽  
Glass Fiber ◽  
Ag Nanoparticles ◽  
Borate Glass ◽  
Structural And Optical Properties ◽  
Co Doped

Optical properties of Er3+/Yb3+ co-doped bismuth calcium borate glass system for NIR lasers and fiber amplifiers

2018 ◽  
Vol 194 ◽  
pp. 440-445 ◽  
Author(s):  
Shangjiu Nian ◽  
Yin Zhang ◽  
Weijing Cao ◽  
Zhenning Wu ◽  
Jun Tang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Borate Glass ◽  
Glass System ◽  
Fiber Amplifiers ◽  
Calcium Borate ◽  
Co Doped

Effect of co-doped SnO2 nanoparticles on the optical properties of Cu-doped lithium potassium borate glass

2012 ◽  
Vol 85 ◽  
pp. 21-24 ◽  
Author(s):  
Haydar Aboud ◽  
H. Wagiran ◽  
I. Hossain ◽  
R. Hussin ◽  
Saad Saber ◽  
...  
Keyword(s):  
Optical Properties ◽  
Borate Glass ◽  
Sno2 Nanoparticles ◽  
Potassium Borate ◽  
Co Doped

Optical Properties of Shaped Silver Nanoparticles

2008 ◽  
Vol 8 (7) ◽  
pp. 3511-3515 ◽  
Author(s):  
Vesna V. Vodnik ◽  
Dušan K. Božanić ◽  
Nataša Bibić ◽  
Zoran V. Šaponjić ◽  
Jovan M. Nedeljković
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Absorption Spectrum ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Nanocomposite Film ◽  
Reducing Agent ◽  
Plasmon Resonance Band ◽  
Resonance Band

The influence of shape and dielectric property of surrounding media on surface plasmon absorption band of silver nanoparticles was studied. Spherical silver nanoparticles (d = 5.6 nm) synthesized in water using NaBH4 as a reducing agent are transferred in non-polar solvent (chloroform) with phase-transfer reagent oleylamine. The absorption spectrum of oleylamine-capped silver nanoparticles dispersed in chloroform shows a strong surface plasmon resonance band that is 19 nm red-shifted compared to unmodified particles in water. The values for peak position and corresponding half widths are compared with theoretical calculations based on Mie theory. Prismatic and plate-like silver nanoparticles were synthesized in water using trisodium citrate as a reducing agent and cetyltrimethylammonium bromide as stabilizer. Due to structural anisotropy of prismatic and plate-like silver nanoparticles three surface plasmon resonance bands were observed in absorption spectrum. Nanocomposites consisting of non-spherical silver nanoparticles and polyvinyl alcohol exhibit different optical properties compared to water colloid. Instead of three surface plasmon bands, nanocomposite film has only one peak at 460 nm. Reason for appearance of single surface plasmon resonance band in nanocomposite film was discussed according to Maxwell-Garnet theory.

scholarly journals Unconventional Optical Response in Engineered Au-Ag Nanostructures

2019 ◽  
Author(s):  
Dev Kumar Thapa ◽  
Subham Kumar Saha ◽  
Guru Pratheep Rajasekar ◽  
Biswajit Bhattacharyya ◽  
Rekha Mahadevu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Plasmon ◽  
Mie Theory ◽  
Localized Surface Plasmon ◽  
Silver Particles ◽  
Temperature Dependent ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Diamagnetic State

This article describes the optical properties of nanostructures composed of silver particles embedded into a gold matrix. In previous studies these materials were shown to exhibit temperature dependent transitions to a highly conductive and strongly diamagnetic state. Here we describe the anomalous optical properties of these nanostructures. Most notably, these materials fail to obey Mie theory and exhibit an unconventional resonance with a maximum at about 4 eV, while the usual gold and silver localized surface plasmon resonances are suppressed. This effect implies a significant deviation from the bulk dielectric functions of gold and silver. We further resolved this resonance into its absorbance and scattering sub-parts. It is observed that the resonance is largely comprised of scattering, with negligible losses even at ultraviolet frequencies.

scholarly journals Growth of Ag-Nanoparticles: Shape-Directing Role of Silver Ions and Stabilizer in Aqueous Solutions

2010 ◽  
Vol 6 (3) ◽  
pp. 1049-1058
Author(s):  
Zoya Zaheer ◽  
Rafiuddin Rafiuddin
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Ag Nanoparticles ◽  
Cetyltrimethylammonium Bromide ◽  
Silver Ions ◽  
Average Diameter ◽  
Capping Agent ◽  
Transmission Electron ◽  
Uv Visible

Silver nanoparticles were synthesized using Tulsi leaves extract as reducing as well as a capping agent to reduce the steps and parameters involved in the synthesis. The morphology, stability and optical properties of Ag-nanoparticles depend on reactants and stabilizer, cetyltrimethylammonium bromide (CTAB) concentrations. The silver nanoparticles were characterized by UV-visible spectrophotometer, and transmission electron microscope (TEM). Spherical morphology of the silver nanoparticles with an average diameter of  25 nm. Morphology changed markedly from spherical aggregated to highly polydispersed in presence of CTAB.

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