Plasmonics-A Route to Nanoscale Optical Devices

Maier, Stefan A.; Brongersma, Mark L.; Kik, Pieter G.; Meltzer, Sheffer; Requicha, Ari; Atwater, Harry A.

doi:10.1002/1521-4095(200110)13:19<1501::aid-adma1501>3.0.co;2-z

Cited by 1,595 publications

(1,133 citation statements)

References 10 publications

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“…These nanoparticles have size-and shape-dependent properties, such as optoelectronic and physicochemical ones [4,5]; in addition, their applications in catalysis [6,7], imaging [8,9] and data storage [10] are more interested. Gold nanoparticles (GNPs), in particular, have been greatly investigated since the middle ages, while they were used in glasses and pigments.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of capped gold nanoparticles by using various amino acids

Zare

Khoshnevisan

Barkhi

et al. 2013

Journal of Experimental Nanoscience

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The production of gold nanoparticles (GNPs) by amino acid is one of the most attractive and interesting subjects in nanobiotechnology. In this study, amino acids have been utilised as a reducing agent and also an agent for capping GNPs. The GNPs were prepared using a reduction solution containing gold cations with optimum concentration of gold salt (5 mM), and also functionalised by glutamic acid, phenylalanine and tryptophan with optimum concentration of amino acids (25 mM). The optimum condition of gold solution and amino acids were achieved by ultraviolet-visible spectroscopy. The size of nanoparticles was obtained 5-20, 10-20 and 20-30 nm, respectively, by transmission electron microscopy and dynamic light scattering techniques. The results obtained from experimental and quantum calculations confirm that amino acids have strong bond while they have anion binding. Moreover, the free carboxylic groups of capped GNPs are one of the suitable and capable beads for binding biological agents. As a result, the medical applications of amino acids and proteins can be used as a practical method due to the strong interaction of peripheral amine groups with nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Fabrication of capped gold nanoparticles by using various amino acids

Zare

Khoshnevisan

Barkhi

et al. 2013

Journal of Experimental Nanoscience

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“…It covers a wide range of applications including nanoscale circuits [1][2][3] , cancer therapy 4 , holography 5 , efficient solar cells 6 , metamaterial devices [7][8][9] , single-molecule detection 10,11 , biosensing 12 and nanoresolution imaging 13 . Some of the functions of surface plasmon polaritons utilized in plasmonic techniques are field enhancement, photon nanoconfinement and spectral tunability.…”

mentioning

confidence: 99%

Tip-enhanced nano-Raman analytical imaging of locally induced strain distribution in carbon nanotubes

et al. 2013

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Tip-enhanced Raman scattering microscopy is a powerful technique for analysing nanomaterials at high spatial resolution far beyond the diffraction limit of light. However, imaging of intrinsic properties of materials such as individual molecules or local structures has not yet been achieved even with a tip-enhanced Raman scattering microscope. Here we demonstrate colour-coded tip-enhanced Raman scattering imaging of strain distribution along the length of a carbon nanotube. The strain is induced by dragging the nanotube with an atomic force microscope tip. A silver-coated nanotip is employed to enhance and detect Raman scattering from specific locations of the nanotube directly under the tip apex, representing deformation of its molecular alignment because of the existence of local strain. Our technique remarkably provides an insight into localized variations of structural properties in nanomaterials, which could prove useful for a variety of applications of carbon nanotubes and other nanomaterials as functional devices and materials.

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“…Plasmonic nanostructures based on metallic nanoparticles have extensively been utilized in designing all-optical devices, which gives us opportunity to manipulate the plasmon resonance modes at particular frequencies [23][24][25][26][27][28][29]. Most of associated works prove that significant losses and dissipations appear during guiding of optical waves during electric plasmon propagation, and these destructive components cause dramatic limitations in the propagation distance.…”

Section: Introductionmentioning

confidence: 99%

Gold Shell Nanocluster Networks in Designing Four-Branch (1×4) Y-Shape Optical Power Splitters

Ahmadivand

Golmohammadi²

2014

Journal of the Optical Society of Korea

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In this study, closely spaced Au nanoparticles which are arranged in nanocluster (heptamer) configurations have been employed to design efficient plasmonic subwavelength devices to function at the telecommunication spectrum (λ~1550 nm). Utilizing two kinds of nanoparticles, the optical properties of heptamer clusters composed of Au rod and shell particles that are oriented in triphenylene molecular fashion have been investigated numerically, and the cross-sectional profiles of the scattering and absorption of the optical power have been calculated based on a finite-difference time-domain (FDTD) method. Plasmon hybridization theory has been utilized as a theoretical approach to characterize the features and properties of the adjacent and mutual heptamer clusters. Using these given nanostructures, we designed a complex four-branch (1×4) Y-shape splitter that is able to work at the near infrared region (NIR). This splitter divides and transmits the magnetic plasmon mode along the mutual heptamers arrays. Besides, as an important and crucial parameter, we studied the impact of arm spacing (offset distance) on the guiding and dividing of the magnetic plasmon resonance propagation and by calculating the ratio of transported power in both nanorod and nanoshell-based structures. Finally, we have presented the optimal structure, that is the four-branch Y-splitter based on shell heptamers which yields the power ratio of 23.9% at each branch, 4.4 µm decaying length, and 1450 nm offset distance. These results pave the way toward the use of nanoparticles clusters in molecular fashions in designing various efficient devices that are able to be efficient at NIR.

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Plasmonics-A Route to Nanoscale Optical Devices

Cited by 1,595 publications

References 10 publications

Fabrication of capped gold nanoparticles by using various amino acids

Fabrication of capped gold nanoparticles by using various amino acids

Tip-enhanced nano-Raman analytical imaging of locally induced strain distribution in carbon nanotubes

Gold Shell Nanocluster Networks in Designing Four-Branch (1×4) Y-Shape Optical Power Splitters

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