Can the Plasmon Frequency in Metals Be Changed Experimentally?

[ahatef]

Hi guys;

I have a question about the Plasmon frequencies in metals I know that it can be calculated as following:
ωp²=Ne²/ε₀m_eff
I was just wondering if anyone knows it is possible to change the plasmon frequency of any metal let say silver experimentally or not. I am working on metallic photonic crystals I want to find the effect of plasmon frequency on photonic band gap.
Thanks

 

[nbo10]

Change either the electron density or the electrons effective mass.

 

[charng]

I can confirm that the Plasmon frequency in metals can indeed be changed experimentally. This can be achieved through various methods such as altering the metal's composition, size, shape, and surrounding environment.

For example, by changing the metal's composition, such as adding impurities or alloying, the effective mass (meff) of the electrons can be altered, thus changing the Plasmon frequency. Additionally, changing the size and shape of the metal particles can also affect the Plasmon frequency due to quantum confinement effects.

Furthermore, the surrounding environment can also play a role in changing the Plasmon frequency. For instance, the presence of dielectric materials or other metals can modify the electron density and thus impact the Plasmon frequency.

In your case, studying the effect of Plasmon frequency on photonic band gap in metallic photonic crystals is a valid and interesting research topic. I suggest exploring different experimental methods to manipulate the Plasmon frequency and observe its impact on the photonic band gap. This could potentially lead to new insights and applications in the field of photonic crystals.