Comparing different parpameters to be a plasmonic material

  • Context: Graduate 
  • Thread starter Thread starter Debnath
  • Start date Start date
  • Tags Tags
    Material
Click For Summary

Discussion Overview

The discussion focuses on comparing various metals—Silver, Gold, Aluminum, Copper, Sodium, and Potassium—as plasmonic materials. Participants seek clarification on specific parameters related to plasmonics, including their meanings and implications for material performance.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant inquires about the meaning of ε(int) and whether a lower value is preferable for plasmonic materials.
  • Another participant asks for clarification on the term "Plasma Frequency of a metal in eV" and its significance.
  • Questions are raised regarding ω(int) in eV, its relation to interband loss, and whether a higher value indicates a better plasmonic material.
  • Participants discuss the meaning of the damping rate in eV and its effect on plasmonic properties.
  • There is curiosity about the implications of light incidence below or above the plasmon frequency and the importance of this frequency.
  • A participant questions why the primary focus in plasmonic materials is on light scattering rather than absorption or transmission, and what issues may arise from absorption or transmission.
  • One participant suggests that the relationship between parameters and the effectiveness of a plasmonic material may depend on the specific frequency range of interest.

Areas of Agreement / Disagreement

Participants express uncertainty regarding the definitions and implications of various parameters, and there is no consensus on which combination of parameters constitutes a better plasmonic material. Multiple competing views remain on the significance of ω(int) and other factors.

Contextual Notes

Some participants note a lack of background information on the parameters discussed, indicating that the understanding of these concepts may depend on specific articles or texts. The discussion reflects a need for further exploration of the relationships between the parameters and their impact on plasmonic behavior.

Who May Find This Useful

This discussion may be of interest to students and researchers in the fields of plasmonics, solid-state physics, and materials science, particularly those looking to understand the parameters influencing plasmonic materials.

Debnath
Messages
2
Reaction score
0
Hello Everybody

I want to do the comparison of metals like Silver, Gold, Aluminum, Copper, Sodium and Potassium as plasmonic metals. Now, I am confused about some parameters about what they really mean.

1. what does ε(int) means? Is it better for a plasmonic material to have less ε(int)?

2. What does "Plasma Frequency of a metal in eV" means here?

3. What does ω(int) in eV means? Is it better to have more value of ω(int) in eV to be a better Plasmonic material?

4. What does dumping rate in eV means? How it effect the property of a plasmonic material?

5. What does happen if the light is incident to a plasmonic material below or more than plasmon frequency? Why this plasmon frequency is that so important?

6. In a plasmonic material, the prime target is scattering of light? Why not absorption or transmission? What will be the problem if the light will be either absorbed or transmitted?

I will be very much grateful if someone can give my answers. Also, if anyone can suggest any paper or, textbook where I can get those answers, I will be really so grateful.

Thanks in advance.
 
Physics news on Phys.org
Any book on solid state theory should contain a chapter which explains most of the questions you are asking for, especially the meaning of plasma frequency, dielectric constant of a metal and its relation to the frequency of surface plasmons. Try e.g. Ashcroft and Mermin, Solid state physics.
 
Thank you DrDu

But it would be great if you can tell me now, what is ω (int) in eV means? It might be connected to Interband loss of a metal. If you can let me know about how it is related to Interband loss. And which one is better plasmonic metal actually with having ω (int) 3.2 or 1.2?

Thanking you in advance
 
I am not a specialist on plasmonics. I may be that ω(int) is the band gap.
Where did you find all these parameters? Are you referring to a specific article?
Would be helpful to have some background information.
I think you can't say absolutely which combination of the parameters makes a better plasmonic material. It rather depends on the frequency range you want your material to operate.
 

Similar threads

Graduate Can Relative Permittivity of Aluminum Be Calculated from Its Plasma Frequency?
  • · Replies 4 ·
Replies
4
Views
12K
What is Plasmonic Photocatalysis and How Can It Help Remove Hydrogen Sulfide?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What does it mean for a plasmon to confine or guide light?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Negative permittivity of metals – light-trapping and plasmon
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Modeling the Absorbtion of Silver-doped glass
  • · Replies 1 ·
Replies
1
Views
2K
High School Can heating/cooling a material effect absorption, and transmission
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What can the Fermi surface tell us about a material's properties?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Whats the difference in glass electrons, and solid irons
  • · Replies 3 ·
Replies
3
Views
3K
Atomic displacements, replacements, and radiation damage of structural materials
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Calculating the Dielectric Function of metals - Units trouble
  • · Replies 4 ·
Replies
4
Views
3K