I have seen a lot that people use core-shell structures for nanoparticles in plasmonic application. Any special significance of core-shell structures?
Any paper on that?
Thanking you in advance
As for any NP, there are pros and cons. Among pros - ease of plasmon tunability (with particle's size and shell thickness), isotropic geometry of the NP... Among cons- relatively large size, difficulties in making very thin top layer (affect spectral range of plasmon tunability)...
For papers on nanoshells look for articles from Naomi Halas group, Rice University. She's a pioneer in silica-gold nanoshells.
Plenty papers on comparative characteristics on various type of NP. One of them is below.
Good luck!
Serge
As for any NP, there are pros and cons. Among pros - ease of plasmon tunability (with particle's size and shell thickness), isotropic geometry of the NP... Among cons- relatively large size, difficulties in making very thin top layer (affect spectral range of plasmon tunability)...
For papers on nanoshells look for articles from Naomi Halas group, Rice University. She's a pioneer in silica-gold nanoshells.
Plenty papers on comparative characteristics on various type of NP. One of them is below.
Good luck!
Serge
The biggest advantage of having a core shell structure is the tunability of the plasmon resonance. By changing the core/shell size you can shift the SPR in these structures. Another advantage in case of a core shell structure is its stability compared to an organic molecule capped metal nanoparticle.
There are quite a lot of literature available on Core shell structures. For an overview of core-shell particles, see this review > http://pubs.acs.org/doi/pdfplus/10.1021/cr100449n
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