Journal ArticleDOI
Rapid in situ synthesis of silver nanoparticles on the distal facet of a fiber by laser-induced photo-reduction
Xinhua Zeng,Chen Cheng,Chen Cheng,Shouguo Zheng,Shizhuang Weng,Shizhuang Weng,Lei Chen,Yuan Yuan,Jun Dong,Hu Zelin,Miao Li +10 more
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In this paper, the authors explore a novel and rapid route for fabricating silver nanoparticles on the distal facet of an optical fiber, which relies on the reaction between silver ions and organic free radicals initiated by the photolysis of photoinitiators.Abstract:
We explore a novel and rapid route for fabricating silver nanoparticles on the distal facet of an optical fiber. The reduction of neutral silver particles relies on the reaction between silver ions and organic free radicals initiated by the photolysis of photoinitiators. A similar approach has been extended to the fabrication of a silver nanoparticle array at the extremity of a fiber bundle. The size and number of silver nanoparticles can be tuned by controlling the laser exposure doses. The results of the synthesis can be envisaged via in situ measurement of their optical transmission rate after the photosynthesis process.read more
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Effects of thermo-plasmonics on laser-induced backside wet etching of silicate glass
M. Yu. Tsvetkov,Vladimir Yusupov,Nikita V. Minaev,Peter S. Timashev,K. M. Golant,Victor N. Bagratashvili +5 more
TL;DR: In this article, laser-induced photo-thermal reducing of silver nanoparticles and self-assembling of Ag nanoparticles in water and the water/glass interface, fast laserinduced overheating of a water and glass surface through the thermo-plasmonic effect, formation of highly reactive supercritical water that causes glass etching and crater formation.
Journal ArticleDOI
Laser-driven self-assembly of shape-controlled potassium nanoparticles in porous glass
Luca Marmugi,Emilio Mariotti,Alessia Burchianti,Stefano Veronesi,Stefano Veronesi,Luigi Moi,Carmela Marinelli +6 more
TL;DR: In this paper, the growth of shape-controlled potassium nanoparticles inside a random network of glass nanopores, exposed to low-power laser radiation, was observed and a deep connection between the macroscopic behaviour of atomic desorption and light-assisted cluster formation was observed.
Journal ArticleDOI
Laser driven self-assembly of shape-controlled potassium nanoparticles in porous glass
Luca Marmugi,Emilio Mariotti,Alessia Burchianti,Stefano Veronesi,Stefano Veronesi,Luigi Moi,Carmela Marinelli +6 more
TL;DR: In this article, the growth of shape-controlled potassium nanoparticles inside a random network of glass nanopores, exposed to low-power laser radiation, was observed, and it was shown that laser light not only increases the number of nanoparticles embedded in the glass matrix but also influences their structural properties.
Journal ArticleDOI
Corrigendum: Rapid in situ synthesis of silver nanoparticles on the distal facet of a fiber by laser-induced photo-reduction (2014 Laser Phys. Lett. 11 016003)
Xinhua Zeng,Chen Cheng,Chen Cheng,Shouguo Zheng,Shizhuang Weng,Shizhuang Weng,Lei Chen,Yuan Yuan,Jun Dong,Hu Zelin,Miao Li +10 more
Journal ArticleDOI
A new setup for the study of adsorption/desorption processes and nanoparticles formation in porous alumina
Carmela Marinelli,Emilio Mariotti,N. Papi,F. Sarri,A. Ziccardi,Roberto Cecchi,Leonardo Stiaccini,Cecilia Viti,A. Khanbekyan,I. Gladskikh,P. A. Petrov,Tigran A. Vartanyan +11 more
TL;DR: In this paper, a setup devoted to the study of adsorption and desorption processes of alkali atoms after deposition on a 300 nm thick porous alumina substrate in an Ultra High Vacuum chamber is presented.
References
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Shape-Controlled Synthesis of Gold and Silver Nanoparticles
Yugang Sun,Younan Xia +1 more
TL;DR: Monodisperse samples of silver nanocubes were synthesized in large quantities by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP), characterized by a slightly truncated shape bounded by {100, {110}, and {111} facets.
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Monodispersed Colloidal Spheres: Old Materials with New Applications
TL;DR: An overview of current research activities that center on monodispersed colloidal spheres whose diameter falls anywhere in the range of 10 nm to 1 μm can be found in this paper.
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Enhancement of single-molecule fluorescence using a gold nanoparticle as an optical nanoantenna.
TL;DR: Comparisons with three-dimensional calculations guide us to decipher the contributions of the excitation enhancement, spontaneous emission modification, and quenching in the molecular excitation and emission processes.
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Photoactivated fluorescence from individual silver nanoclusters.
TL;DR: Although blinking and characteristic emission patterns demonstrate single-nanoparticle observation, large-scale dynamic color changes were also observed, even from the same nanoparticle, in oxidized thin silver films that enable Ag2O particles to grow at high density from silver islands.
Journal ArticleDOI
Gap-Dependent Optical Coupling of Single “Bowtie” Nanoantennas Resonant in the Visible
TL;DR: In this article, two opposing tip-to-tip Au triangles have been fabricated with triangle lengths of 75 nm and gaps ranging from 16 to 488 nm, and the plasmon scattering resonance first blue shifts with increasing gap, and then red shifts as the particles become more and more uncoupled, while perpendicularly polarized excitation shows little dependence upon gap size.