Page 7 line 17 In the present experiment, bimetallic alloy nanoparticles produced and a single surface plasmon resonance (SPS) peak of intensity of 409 nm is observed, and probe of identification of Ag/Co alloy, which is very close to the SPR peak at 410 nm of Ag/Co alloy synthesized by chemical reaction process [22].
Line 17. You are speaking about SPS. But because the research is focused on the nanoparticles they have Localise Surface Plasmon Resonance (LSPS).
Why did you used the wavelength 808 nm? Because the absorption caused by LSPR is around 400 nm (Figure 5) and at 808 nm the absorption due to plasmon resonance is negligible!
The possible reason for the higher temperature profiles and rise of nanofluid than water alone is the plasmonic hyperthermia effect of nanoparticles.
Line 57- "The possible reason for the higher temperature profiles and rise of nanofluid than water alone is the plasmonic hyperthermia effect of nanoparticles." The plasmonic behaviour is significant at around 400 nm. At wavelength 808 nm the absorption caused by Localised Surface Plasmon resonance (LSPR) are unneglectable. This discrepancies has to be explain in the text and in the Conclusion.
Dear Imran Ali ,
Typically the term “Surface plasmon resonance” is mainly used for the excitation of Surface Plasmon Polaritons in thin films, i.e. propagating plasmons, and you need some strategy (for instance, using a grating) to achieve the coupling, i.e. to increase the momentum.
On the other hand, the term “localized surface plasmon resonance” (LSPR) occurs in metallic nanostructures. LSPRs depend on the material (1), the dimensions (2) and the shape (3).
1) If you have nanospheres with the same diameter but some made of silver and others made of gold, the former would exhibit the LSPR peak at higher energy (lower wavelength).
2) If you have nanospheres made of the same material but some with diameter d1 and others with diameter d2, with d2>d1, the LSPR peak of d1 nanospheres would appear at higher energy (lower wavelength).
3) If you have a collection of identical aligned nanorods made of the same material, you would have two LSPR peaks depending on the light polarization: one along the rod axis and another along the perpendicular direction; the latter would appear at higher energy (lower wavelength).
This link might help you.
https://nicoyalife.com/nicoya-surface-plasmon-resonance-resources/what-is-spr/lspr-vs-spr-2/#:~:text=OpenSPR%20is%20similar%20in%20many,same%20experimental%20conditions%20and%20procedures.&text=resonance%20(LSPR).-,Localized%20surface%20plasmon%20resonance%20is%20generated%20by%20metal%20nanoparticles%2C%20typically,as%20used%20in%20traditional%20SPR.
Dear Imran Ali
In addition to the explanation given by Prof. Jose-Miguel Garcia-Martin
SPR is everything to do with propagating plasmons (SPPs) of metallic thin films. LSPR is everything to do with nanoparticles.
You can use Kretschmann-Reather (KR), Otto, Reverse Kretschmann (RK) or grating coupling configurations to excite surface plasmons at metal-dielectric interface. In other words, to get SPPs. You can find more information in:
Article Silver-Soret Nanoparticles for Femtomolar Sensing of Glutath...
Article Femtomolar Detection of Spermidine Using Au Decorated SiO2 N...
Both of which discuss on LSPR and SPR for your perusal..Best regards.
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