Localized surface plasmon resonance (LSPR)

[paulzhen]

Hi!

I wondering does anyone here has a clue of lowering the absorption level and narrowing the scattering bandwidth of LSPR of nanoparticles? Are those "intrinsic" properties or can be improved by modifying their size, shapes, etc?

Thanks for sharing your thoughts!

Paul

 

[eljose79]

Hi Paul,

Thank you for your question! Lowering the absorption level and narrowing the scattering bandwidth of localized surface plasmon resonance (LSPR) of nanoparticles can be achieved through various methods. These properties are considered "intrinsic" to the nanoparticles, as they are determined by their composition and size.

One way to lower the absorption level of LSPR is to use materials with lower extinction coefficients, such as silver or gold, which have strong LSPR signals. Additionally, the size and shape of the nanoparticles can also affect the absorption level. For example, smaller nanoparticles with a higher surface-to-volume ratio will have a stronger LSPR signal compared to larger nanoparticles.

To narrow the scattering bandwidth of LSPR, the shape of the nanoparticles can be modified. For instance, using elongated or rod-shaped nanoparticles rather than spherical ones can result in a narrower scattering bandwidth.

Furthermore, surface modifications can also play a role in controlling the LSPR properties of nanoparticles. By functionalizing the surface of the nanoparticles with different molecules, the LSPR signal can be tuned to specific wavelengths and the scattering bandwidth can be narrowed.

In summary, the absorption level and scattering bandwidth of LSPR can be improved by modifying the size, shape, and surface properties of the nanoparticles. I hope this helps answer your question. Let me know if you have any further inquiries.