Analysis of the Drude model in metallic films

Li, H. Y.; Zhou, Shangqi; Li, J.; Chen, Y. L.; Wang, S. Y.; Shen, Z. C.; Chen, L. Y.; Liu, H.; Zhang, Xixiang

doi:10.1364/ao.40.006307

Cited by 47 publications

(10 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Scattering frequency Γ includes all the scattering interactions like electron-electron, electron-phonon, and so forth. However, a limited range of wavelength can be approximated by Drude model [21, 38]:

\begin{matrix} ε_{Drude} (ω) = ε (\infty) - \frac{f_{0} ω_{p}^{2}}{ω (ω - i Γ)} . \end{matrix}

…”

Section: Dielectric Function Modelsmentioning

confidence: 99%

“…The basic model in the field of optical properties of different materials is the well-known Drude model [21–23] and almost all the other models are improvements of this fundamental model. Subsequent to Drude, many scientists attempted to develop and refine new models, focusing mainly on experimentally nonparametric models [24, 25] that were not comprehensive or further developing the Drude model.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on Dielectric Function Models for Surface Plasmon Resonance Structure

Jahanshahi

Ghomeishi

Adikan

2014

The Scientific World Journal

View full text Add to dashboard Cite

The most common permittivity function models are compared and identifying the best model for further studies is desired. For this study, simulations using several different models and an analytical analysis on a practical surface Plasmon structure were done with an accuracy of ∼94.4% with respect to experimental data. Finite element method, combined with dielectric properties extracted from the Brendel-Bormann function model, was utilized, the latter being chosen from a comparative study on four available models.

show abstract

\begin{matrix} ε_{Drude} (ω) = ε (\infty) - \frac{f_{0} ω_{p}^{2}}{ω (ω - i Γ)} . \end{matrix}

…”

Section: Dielectric Function Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Dielectric Function Models for Surface Plasmon Resonance Structure

Jahanshahi

Ghomeishi

Adikan

2014

The Scientific World Journal

View full text Add to dashboard Cite

show abstract

“…Here, we used the three-dimensional FDTD simulator to solve TE and/or TM Maxwell's equations for infinite 2D arrays of periodically spaced nanostars. The dielectric functions at various wavelengths were obtained using Drude models [33,34] for Ag, Au, Cu and Al. Figure 2 indicates the simulation geometry for the FDTD calculations.…”

Section: Computational Methodologymentioning

confidence: 99%

Effect of Multimodal Plasmon Resonances on the Optical Properties of Five-Pointed Nanostars

Zhu

Cortie

Blakey

2015

Nanomaterials and Nanotechnology

View full text Add to dashboard Cite

The optical transmission and electric field distribution of plasmonic nanostructures dictate their performance in nano-optics and nano-biosensors. Here, we consider the use of hollow, five-pointed, star-shaped nanostructures made of Al, Ag, Au or Cu. We use simulations based on finite-difference time-domain and the discrete dipole approximation to identify the strongest plasmon resonances in these structures. In particular, we were seeking plasmon resonances within the visible part of the spectrum. The silver pentagrams exhibited the strongest such resonance, at a wavelength of about 530 nm. The visiblelight resonances of Au and Cu pentagrams were relatively weaker and red-shifted by about 50 nm. The main resonances of the Al pentagrams were in the ultra-violet. All the nanostars also showed a broad, dipolar-like resonance at about 1000 nm. Surprisingly, the maximum field intensities for the visible light modes were greatest along the flanks of the stars rather than at their tips, whereas those of the dipolar-like modes in the near-infrared were greatest at the tips of the star. These findings have practical implications for sensor design. The inclusion of a conformally hollow interior is beneficial because it provides additional 'hot spots'.

show abstract

“…The in-plane widths of nanoholes was 250 nm and the refractive index of the medium surrounding the Ag nanostructures was 1.0 (air). For the Ag material, we used the Drude model [11,12] to calculate the transmission and localized electronic distribution near the surface of the pentagram nanostructures. …”

Section: Computational Setupmentioning

confidence: 99%

Effect of nanoholes on the plasmonic properties of star nanostructures

2011

View full text Add to dashboard Cite

The transmission and localized electric field distribution of nanostructures are the most important parameters in the plasmonic field for nano-optics and nanobiosensors. In this paper, we propose a novel nanostructure which may be used for nanobiosensor applications. The effect of nanoholes on the plasmonic properties of star nanostructure was studied via numerical simulation, using the finite-difference time-domain (FDTD) method. In the model, the material type and size of the nanostructures was fixed, but the distance between the monotor and the surface of the nanoholes was varied. For example, nanoholes were located in the center of the nanostructures. The simulation method was as follows. Initially, the wavelength of incident light was varied from 400 to 1200 nm and the transmission spectrum and the electric field distribution were simulated. Then at the resonance wavelength (wavelength where the transmission spectrum has a minimum), the localized electric field distribution was calculated at different distances from the surface of the nanostructures. This study shows that the position of nanoholes has a significant effect on the transmission and localized electric field distribution of star nanostructures. The condition for achieving the maximum localized electric field distribution can be used in nano-optics and nanobiosensors in the future.

show abstract

Analysis of the Drude model in metallic films

Cited by 47 publications

References 8 publications

Study on Dielectric Function Models for Surface Plasmon Resonance Structure

Study on Dielectric Function Models for Surface Plasmon Resonance Structure

Effect of Multimodal Plasmon Resonances on the Optical Properties of Five-Pointed Nanostars

Effect of nanoholes on the plasmonic properties of star nanostructures

Contact Info

Product

Resources

About