Investigation of plasmonics resonance infrared bowtie metal antenna

Zhong, Wei; Wang, Y.; He, Rongxi; Zhou, Xiuli

doi:10.1007/s00340-011-4662-5

Cited by 7 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under infrared wavelengths, gold has been shown to induce plasmons at the surface of a dielectric interface [ 27 ]. In this case, the alumina membrane acts as both the dielectric material and a periodic enhancer of localized surface plasmons.…”

Section: Resultsmentioning

confidence: 99%

Formation of Gold Microparticles by Ablation with Surface Plasmons

Garner

Molian

2013

Nanomaterials

View full text Add to dashboard Cite

The formation of gold microparticles on a silicon substrate through the use of energetic surface plasmons is reported. A laser-assisted plasmonics system was assembled and tested to synthesize gold particles from gold thin film by electrical field enhancement mechanism. A mask containing an array of 200 nm diameter holes with a periodicity of 400 nm was prepared and placed on a silicon substrate. The mask was composed of 60 µm thick porous alumina membrane sputter-coated with 100 nm thin gold film. A Nd:YAG laser with 1064 nm wavelength and 230 µs pulse width (free-running mode) was then passed through the mask at an energy fluence of 0.35 J/cm2. The extraordinary transmission of laser light through alumina/gold micro-hole optical antenna created both extended and localized surface plasmons that caused the gold film at the bottom of the mask to fragment into microparticles and deposit on the silicon substrate that is in direct contact with the mask. The surface plasmon method is simpler, quicker, more energy efficient, and environmentally safer than existing physical and chemical methods, as well as being contamination-free, and can be extended to all types of materials that will in turn allow for new possibilities in the formation of structured surfaces.

show abstract

Section: Resultsmentioning

confidence: 99%

Formation of Gold Microparticles by Ablation with Surface Plasmons

Garner

Molian

2013

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Bow-tie structures are very efficient plasmonic dimers that can be fabricated via lithography on substrates hence they are frequently used in applications. Further advantage of bow-tie structures is their low apex curvature, which makes it possible to reach high near-field enhancement (NFE) in the nanogap 12 – 14 .…”

Section: Introductionmentioning

confidence: 99%

Few-cycle localized plasmon oscillations

Csete

Szenes

Vass

et al. 2020

Sci Rep

View full text Add to dashboard Cite

The generation of few-cycle laser pulses proved to be a key enabling technology in strong-field physics and ultrafast science. the question naturally arises whether one can induce few-cycle localized plasmon oscillations in optical near-fields. Here, we perform a comparative study of different plasmonic nanoresonators illuminated by few-cycle pulses. We analyze the number of cycles (noc) of the plasmonic field, the near-field enhancement (NFE) as well as the figure of merit NFE/NOC. The pulse length dependence of these quantities is also investigated. throughout the inspected pulselength interval silica-gold and silica-silver core-shell monomers have the potential to preserve the noc of the incoming pulse, silver bow-ties result in the highest nfe, whereas gold core-shell dimers have the highest NFE/NOC. Based on the analysis, silver bow-ties, gold core-shell and silver nanorod dimers proved to be the most suitable for few-cycle near-field amplification. Few-cycle laser pulses (especially with carrier-envelope phase stabilization) proved to be highly important in many experiments in strong-field physics, attosecond science and pump-probe methods with ultrahigh time resolution. Therefore, the question naturally arises whether one can combine extreme temporal concentration of electromagnetic energy (in the form of few-cycle pulses 1,2) with ultrahigh spatial localization of laser fields readily provided by localized surface plasmon (LSP) resonance. Here, we investigate the possibility of the generation of few-cycle LSPs by analyzing the temporal response of different types of plasmonic nanoparticles and nanoparticle dimers. Plasmonic metal nanorods have already been investigated extensively. They inherently show plasmonic resonances corresponding to their short and long axes. The transversal and longitudinal resonance frequencies depend on the material, axis lengths and aspect ratio of the nanorod. Hence, nanorod LSP resonance can be tuned through wide spectral intervals by changing the geometry 3,4. Dielectric-metal core-shell type nanoresonators offer unique possibility of far-field and near-field control spanning wide spectral intervals via tailoring the plasmon hybridization promoted by two metal-dielectric interfaces 5,6. An interesting possibility is that dipolar resonance can be achieved at the same wavelength in two different generalized aspect ratio (GAR = R inner /R outer) intervals by applying the same core and shell materials 7. The thick (thin) shell composition supports a plasmonic resonance, which is accompanied by a spectrally wide (narrow) scattering cross-section maximum and low (high) absorbance. Although the scattering of core-shell nanoparticles is always lower than that of a homogeneous sphere, the achievable broad bandwidth and the possibility to control the Q factor of the plasmonic resonance by varying the GAR offers the unique possibility of electric field enhancement combined with the preservation of few-cycle transients 8,9. More complex plasmonic structures were also proposed and then u...

show abstract

“…Figure 5 shows the nanoparticles embedded on silicon. Under infrared wavelengths, gold has been shown to induce plasmons at the surface of a dielectric interface [27]. In this case, the alumina membrane acts as both the dielectric material and a periodic enhancer of localized surface plasmons.…”

Section: Resultsmentioning

confidence: 99%

Plasmonics based micro/nano manufacturing

Garner

View full text Add to dashboard Cite

Investigation of plasmonics resonance infrared bowtie metal antenna

Cited by 7 publications

References 16 publications

Formation of Gold Microparticles by Ablation with Surface Plasmons

Formation of Gold Microparticles by Ablation with Surface Plasmons

Few-cycle localized plasmon oscillations

Plasmonics based micro/nano manufacturing

Contact Info

Product

Resources

About