$\hbox{Au/SiO}_{2}$ Nanoring Plasmon Waveguides at Optical Communication Band

Jung, Kim Hyun; Teixeira, F.L.; Reano, Ronald M.

doi:10.1109/jlt.2007.902100

Cited by 130 publications

(90 citation statements)

References 47 publications

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“…1 The LSPR frequency of a nanoparticle/dielectric system is correlated with the size and shape of the nanoparticles, 2,3 interparticle distance, 4 and the dielectric environment surrounding them. By tuning the LSPR frequency using these factors, metallic nanoparticle/dielectric systems can be devised for applications such as biosensors, [5][6][7][8][9][10][11] plasmonic waveguides, 12 and photocatalysts. 13 Metallic nanostructures can be prepared on the surface of metallic thin films deposited on dielectric or semiconductor substrates via irradiation of the surface with a quantum beam such as an ion beam, [14][15][16][17][18][19][20][21][22][23] nanosecond-pulsed laser, 24,25 or electron beam.…”

mentioning

confidence: 99%

Effects of ion and nanosecond-pulsed laser co-irradiation on the surface nanostructure of Au thin films on SiO2 glass substrates

Shibayama

Meng

et al. 2014

Journal of Applied Physics

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Ion irradiation synthesis of Ag-Au bimetallic nanospheroids in SiO2 glass substrate with tunable surface plasmon resonance frequency J. Appl. Phys. 114, 054308 (2013) Ion irradiation and short-pulsed laser irradiation can be used to form nanostructures on the surfaces of substrates. This work investigates the synergistic effects of ion and nanosecond-pulsed laser co-irradiation on surface nanostructuring of Au thin films deposited under vacuum on SiO 2 glass substrates. Gold nanoparticles are randomly formed on the surface of the substrate after nanosecond-pulsed laser irradiation under vacuum at a wavelength of 532 nm with a repetition rate of 10 Hz and laser energy density of 0.124 kJ/m 2 . Gold nanoparticles are also randomly formed on the substrate after 100-keV Ar þ ion irradiation at doses of up to 3.8 Â 10 15 ions/cm 2 , and nearly all of these nanoparticles are fully embedded in the substrate. With increasing ion irradiation dose (number of incident laser pulses), the mean diameter of the Au nanoparticles decreases (increases). However, Au nanoparticles are only formed in a periodic surface arrangement after co-irradiation with 6000 laser pulses and 3.8 Â 10 15 ions/cm 2 . The periodic distance is $540 nm, which is close to the wavelength of the nanosecond-pulsed laser, and the mean diameter of the Au nanoparticles remains at $20 nm with a relatively narrow distribution. The photoabsorption peaks of the ion-or nanosecond-pulsed laser-irradiated samples clearly correspond to the mean diameter of Au nanoparticles. Conversely, the photoabsorption peaks for the co-irradiated samples do not depend on the mean nanoparticle diameter. This lack of dependence is likely caused by the periodic nanostructure formed on the surface by the synergistic effects of co-irradiation. V C 2014 AIP Publishing LLC.

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mentioning

confidence: 99%

Effects of ion and nanosecond-pulsed laser co-irradiation on the surface nanostructure of Au thin films on SiO2 glass substrates

Shibayama

Meng

et al. 2014

Journal of Applied Physics

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“…It is verified that the plasmonic properties of the metal structures in nanoscale can be characterized by classical electromagnetic theory, which provides analogous behavior to the atoms' and molecules' wave functions [7,8]. On the other hand, near-field coupling between closely adjacent or neighbor nanoparticles has been considered as one of the important subfields of plasmonic notions [9][10][11][12][13][14]. Conventionally, robust plasmon resonance coupling can take place in adjacent metal nanoparticles which are known as a dimer, and a pair of particles is the simplest example of these nanostructures [15][16][17][18].…”

Section: Introductionmentioning

confidence: 90%

“…By locating plasmon resonance position at λ~1550 nm, based on the geometrical sizes of rod and shell particles, this distance is determined as 252 nm and 235 nm for rod and shell particles, respectively. Jung et al [12] proved that the Au nanoshell is the appropriate nanoparticle to operate at the NIR region effectively. On the other hand, Ahmadivand et al [23] showed that Au nanorod is not an appropriate particle for NIR applications due to its destructive far-field scattering and absorption ratios.…”

Section: Triphenylene Nanostructure Based On Gold Nanorods and Shmentioning

confidence: 99%

“…On the other hand, several attempts have been made on different nanoparticles to provide more geometrical versatility to enhance the quality of optical power propagation. Nanoshell has widely been employed to design nanostructures because of its strategic structural features and ability to operate properly at NIR [12,22,23]. Several optical devices such as, couplers [12], optical energy splitters [23,24], and hybrid polarization beam splitters (HPBS) [25] have been designed and fabricated based on nanoshell arrays which are able to work at the telecom spectrum efficiently.…”

Section: Introductionmentioning

confidence: 99%

“…Nanoshell has widely been employed to design nanostructures because of its strategic structural features and ability to operate properly at NIR [12,22,23]. Several optical devices such as, couplers [12], optical energy splitters [23,24], and hybrid polarization beam splitters (HPBS) [25] have been designed and fabricated based on nanoshell arrays which are able to work at the telecom spectrum efficiently. Ahmadivand et al [23,24] verified that T and Y-shape optical power splitters in various forms can be designed by ordered arrays of nanoshells with specific geometrical sizes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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High‐Frequency Transmission Lines

Teixeira,

da Rosa,

Radhakrishnan

et al. 2024

Encyclopedia of RF and Microwave Engineering

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Transmission lines are used to guide electromagnetic waves from one place to another. They are used for many types of applications; the most common application in high frequencies is the transmission of signals, either digital or analog. In this case, high‐frequency transmission lines are often designed to maximize the operable frequency bandwidth and minimize the attenuation of the signals. The former preserves the quality of the signal being transmitted, while the latter increases the maximum possible distance of transmission. Examples of high‐frequency transmission lines include coaxial cables, optical fibers, microstrip lines, and hollow waveguides. Transmission of signals is not always limited to physically long lines. Some high‐frequency transmission lines are also used for short‐distance transmission as, for example, those used to transmit signals within a computer or to feed an antenna from its source. This chapter discusses various types of high‐frequency transmission lines used in RF and microwave applications and the various propagation mechanisms behind their operation.

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$\hbox{Au/SiO}_{2}$ Nanoring Plasmon Waveguides at Optical Communication Band

Cited by 130 publications

References 47 publications

Effects of ion and nanosecond-pulsed laser co-irradiation on the surface nanostructure of Au thin films on SiO2 glass substrates

Effects of ion and nanosecond-pulsed laser co-irradiation on the surface nanostructure of Au thin films on SiO2 glass substrates

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

High‐Frequency Transmission Lines

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