Effect of Thicknesses of Liquid Crystal Layers on Shift of Resonance Frequencies of Metamaterials
, Chia-Rong Lee 1,* and Chia-Yi Huang 2,*Round 1
Reviewer 1 Report
This publication is continuation of article [7] published one month ago on same system. Regrettably, some sentences are recycled from previous publication. Otherwise, the manuscript is easy to read and presents a smart study of the influence of LC layer thickness on resonance frequency shifts and birefringence. This work would certainly deserve publication. However, the following points have to be considered before acceptation.
- For curve interpretations, authors postulate an "alignment effect increasing from thickness 310 µm to 1487 µm", explained by the fact that "alignment layers cannot extend their long-range force throughout the whole LC layers". This is likely, but authors should detail their thoughts. Logically, rubbing should align nematic domains up to a certain distance from surface above which they are not aligned. In this case, the alignment effect would consist in a different weighting of aligned and unaligned domains.
- To demonstrate and precise their assumptions, authors should do a simple control experiment. Since they have studied transmittance of the LC cells, they should also show polarizing optical microscopy pictures of these LC cells. The description of the schlieren or whatever textures observed should shed light on the alignment variation in the series.
3. Authors show nice transmittance measurements but only conclude that "alignment layers in the LC cells have a limited long-range force in the LC layers". However, since the intensity attenuation is proportional to thickness of unaligned domains, it is very easy to calculate their proportion relatively to aligned (transparent) domains. This might then allow to confirm/refine/correct the discussion of frequency shift variation.
Author Response
Please see the attached file
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Please find the review report as attached. Thanks.
Comments for author File: Comments.pdf
Author Response
Please see the attached file
Author Response File: Author Response.pdf
Reviewer 3 Report
Please see my uploaded review report.
Comments for author File: Comments.pdf
Author Response
Please see the attached file
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Authors adequately revised their manuscript. I recommend acceptation in present form.
Reviewer 2 Report
The revised manuscript basically addressed my concerns. I suggest this manuscript be published.
