Morphology Engineering for High-Q Plasmonic Surface Lattice Resonances with Large Field Enhancement
, Zhihui Pan 1, Cuiyu Ou 1, Huafeng Dong 1,2, Ziming Meng 1,2 and Jinyun Zhou 1,2,*
Round 1
Reviewer 1 Report
In this work, the authors investigate plasmonic surface lattice resonance (SLR) which realize high Q factors in a plasmonic array system, giving rise to great advantage for light-matter interactions. By systematic FDTD simulations, they revel the relationship between a plasmonic nanostructures and field enhancement (FE) as well as Q factors. They found that the Q factor of a plasmonic SLR is inversely proportional to the square of the cross-section area of the cell particles in the studied cases. Moreover, a larger FE of SLR appear when the separated cell particles support stronger FE. Even though the calculation method (FDTD) and model system (gold triangle gap structure etc.) are very basic, the results are still useful for successive researchers working in this field. I basically agree to publish the work to “Photonic” with some modifications.
(1) The definition of words such as “cross-section area” “Field enhancement: EF” “E_LSPR” “E_SLR” “Q factor”should clarify. They need to be strictly defined in the manuscript using a formula if needed.
(2) Peak wavelength of the unit cell particles are all tuned to be lamda=900 nm, whereas the spacing of each unit cell is 800 nm. What are the reason for the choice of these parameters ? It is helpful for readers to add a comment if the spacing parameter changes.
(3) Numerical method: Simulation area for z direction should be provided.
Author Response
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Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments for author File: Comments.pdf
Author Response
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Author Response File: Author Response.pdf
Reviewer 3 Report
Suggestions for Improvement:
Contextual Background: The abstract lacks some contextual background information on the importance of plasmonic SLRs and their relevance to the field of study. Including a brief introduction or literature review at the beginning of the abstract could help readers better understand the significance of the research.
Methodology: The abstract briefly mentions "engineering morphologies of plasmonic lattice," but does not provide specific details on the methods used for this engineering. Including a sentence or two on the methodology employed would provide readers with a better understanding of the approach used in the study.
Concluding Statement: The abstract ends abruptly after presenting the results. Including a brief concluding statement summarizing the significance of the findings and their potential impact could provide a strong ending to the abstract.
Provide an introduction to the various fields of plasmonics.
These are some suggestions:
1. Beeram, R.; Vepa, K.R.; Soma, V.R. Recent Trends in SERS-Based Plasmonic Sensors for Disease Diagnostics, Biomolecules Detection, and Machine Learning Techniques. Biosensors 2023, 13, 328. https://doi.org/10.3390/bios13030328
2. Song, M., Feng, L., Huo, P. et al. Versatile full-color nanopainting enabled by a pixelated plasmonic metasurface. Nat. Nanotechnology. 18, 71–78 (2023). https://doi.org/10.1038/s41565-022-01256-4
3. Beiranvand, B.; Khabibullin, R.A.; Sobolev, A.S. Local Field Enhancement Due to the Edge States of Nanoplasmonic Crystal. Photonics 2023, 10, 263. https://doi.org/10.3390/photonics10030263
4. Zhao, T., Meng, D., Hu, Z. et al. Enhanced chiroptic properties of nanocomposites of achiral plasmonic nanoparticles decorated with chiral dye-loaded micelles. Nat Commun 14, 81 (2023). https://doi.org/10.1038/s41467-022-35699-z
Explain the relationship between Figure 3 and Figure 4.
Why is the shape of each cell unit effective in the results, especially Figure 5.
What is the difference between your work and similar works?
After the introduction, you immediately went to the result and discussion! Give a description of how you design before this section
Author Response
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Author Response File: Author Response.pdf
Reviewer 4 Report
In this manuscript, we seek conditions under which a high Q value and a strong electric field enhancement can be obtained by localized plasmon resonance and surface lattice resonance generated by the periodic arrangement of metal nanoparticles.
Although the content is very educational, if you explain the following points, it may be possible to publish it as a paper.
We should explain what causes the dip in transmittance near 1200 nm in Fig.1.
In order to obtain high Q values and strong electric field enhancement, we found that it is necessary to reduce the scattering cross section in the dimers and the gaps between the dimers. Regarding the strong electric field enhancement, the manuscript seems to be asking for conditions in which both ELSPR and ESLR are strong. I don't understand why ELSPR and ESLR are stronger in dimer with small gap. This point should be elaborated upon. ELSPR does not have to be a dimer, but the electric field is enhanced by the localized plasmon of the particle, and the ESLR is the electric field enhancement by the surface lattice resonance by the dimer. It seems to me that this is inconsistent with the enhancement being obtained.
I think it would be more convincing if there is experimental data, but is there any experimental data?
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 3 Report
All changes are added. I accept this manuscript to be published as paper.
Reviewer 4 Report
It is a pity that experimental data is not shown, but I understand that this manuscript is a paper on theoretical analysis. I hope that in the future the authors will publish a paper comparing their results with experimental data. Since all points that should be corrected have been corrected, this manuscript can be published.
