Oriented Pearl-Necklace Arrays of Metallic Nanoparticles in Polymers: A New Route Toward Polarization-Dependent Color Filters

Dirix, Yvo; Bastiaansen, Cees W. M.; Caseri, Walter; Smith, Paul

doi:10.1002/(sici)1521-4095(199903)11:3<223::aid-adma223>3.3.co;2-a

Cited by 134 publications

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“…2, curve b). When the reduced composite film was dipped into AgNO 3 , these bands disappeared and a new band at 420 nm is observed indicating the formation of Ag nanoparticles in the composite film [27] (Fig. 2, curve c).…”

Section: Resultsmentioning

confidence: 98%

Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite films: a single step route

2007

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A simple method to embed noble metal (Ag, Au) nanoparticles in organic-inorganic nanocomposite films by single step method is described. This is accomplished by the assistance of Keggin ions present in the composite film. The photochemically reduced composite film has served both as a reducing agent and host for the metal nanoparticles in a single process. The embedded metal nanoparticles in composites film have been characterized by UV-Visible, TEM, EDAX, XPS techniques. Particles of less than 20 nm were readily embedded using the described approach, and monodisperse nanoparticles were obtained under optimized conditions. The fluorescence experiments showed that embedded Ag and Au nanoparticles are responsible for fluorescence emissions. The described method is facile and simple, and provides a simple potential route to fabricate self-standing noble metal embedded composite films.

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Section: Resultsmentioning

confidence: 98%

Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite films: a single step route

2007

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“…[2] The SPR can be tuned by changing particle size, shape, as well as the surrounding dielectric medium. This tunability confers to Au and Ag nanoparticles potential applications for surface-enhanced spectroscopy, [3] optical filters, [4] and plasmonic devices [5] and sensors. [6] This potentiality is exploited more in the case of Au nanoparticles than it is for Ag nanoparticles despite the known fact that Ag nanoparticles exhibit higher efficiency of plasmon excitation.…”

Section: Introductionmentioning

confidence: 99%

Size‐Controlled Water‐Soluble Ag Nanoparticles

et al. 2007

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Ag nanoparticles of two different sizes (1 and 4 nm) were prepared within an apoferritin cavity by using an Ag+‐loaded apoferritin as a nanoconfined environment for their construction. The initial amount of Ag+ ions injected in the apoferritin cavity dictates the size of the final Ag particles. The protein shell prevents bulk aggregation of the metal particles, which renders them water soluble and extremely stable.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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“…Metal nanoparticles have been studied extensively because of their large third-order nonlinear susceptibilities and nonlinear optical response [2,3] and attractive for many applications such as electronic and optical devices [4], chemical and biological sensors [5][6][7][8], optical energy transport [9][10][11][12] and thermal therapy [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of particle size on nonlinear refractive index of Au nanoparticle in PVA solution

Shahriari¹,

Yunus²,

Saion³

2010

Braz. J. Phys.

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Nonlinear refractive index of Au nanoparticle suspended in PVA solution was measured using a single beam Z-scan technique. Measurements were carried out using a green CW laser beam operated at 532 nm as excitation source. Five nanoparticle samples with different particle sizes were prepared by γ radiation method. The Au nano-fluid shows a good third order nonlinear response for particle sizes ranging from 7.0 nm to 18.7 nm. The sign of the nonlinear refractive index was found to be negative and the magnitude was in the order of 10 −8 cm 2 /W. The results show that the nonlinear effect tends to be increased linearly with the increasing of particle sizes thus could be a good candidate for nonlinear optical devices.

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Oriented Pearl-Necklace Arrays of Metallic Nanoparticles in Polymers: A New Route Toward Polarization-Dependent Color Filters

Cited by 134 publications

References 0 publications

Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite films: a single step route

Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite films: a single step route

Size‐Controlled Water‐Soluble Ag Nanoparticles

Effect of particle size on nonlinear refractive index of Au nanoparticle in PVA solution

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