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. Author manuscript; available in PMC: 2018 Mar 19.
Published in final edited form as: RSC Adv. 2017 Mar 20;7(28):17137–17153. doi: 10.1039/C7RA01224A

Figure 7.

Figure 7

Calculated optical properties of Fe3O4-Au core-shell NPs. (A) Extinction spectrum of Fe3O4-Au core-shell NPs in comparison with other core-shell NPs and solid Au NPs with the same diameter Dtotal=50nm of NPs and a shell thickness of 5nm. (B) Extinction spectra of core-shell NPs with varied core refractive indices. (C) Extinction spectra of Fe3O4-Au core-shell NPs with different shell thickness with fixed total particle size. Dtotal = 50 nm. (D) Fractional shifts (Δλ/λ0) of the LSPR peak maximums of the IO-Au NPs from (C). (E) Extinction spectra of Fe3O4-Au core-shell NPs with different shell thickness with fixed IO core size. Dcore = 15 nm. (F) Fractional shifts (Δλ/λ0) of the LSPR peak maximums of the IO-Au NPs from (E). Reprinted with permission from ref 104. Copyright (2014) American Chemical Society.