The Vibration Isolation Design of a Re-Entrant Negative Poisson’s Ratio Metamaterial

Round 1

Reviewer 1 Report

Please refer to the attchment.

Comments for author File: Comments.pdf

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

Review report on the topic ‘The vibration isolation design of a re-entrant Negative Poisson ratio metamaterial’. The suggestion to improve the quality of the manuscript is listed below:

1.       The introduction section is very weak. Discuss the novelty of the work.

2.       Could you please provide information on the potential or promising applications of this metamaterial?

3.       Provide details about the finite element framework (i.e., governing equations, Bloch periodic BC’s, element types, etc.)  reported for simulating the band structure.

4.       Figures require much more fidelity as currently some are good for an internal report only.

5.       In Section 4, a more in-depth mechanistic analysis is preferable to a shallow parametric analysis. What exactly are the underlying factors that led to bandgap evolution?

6.         Add closely related recent articles on band gap structures tuning and optimization in the ref. list.

(a)   Tunable and active phononic crystals and metamaterials. Applied Mechanics Reviews, 72(4), p.040801.

(b)   "Magnetically tunable longitudinal wave band gaps in hard-magnetic soft laminates" International Journal of Mechanical Sciences,  249, 108262 (2023).

(c)    "Functionally Graded Soft Dielectric Elastomer Phononic Crystals: Finite Deformation, electro-elastic longitudinal waves, and band gaps tunability via electro-mechanical loading" International Journal of Applied Mechanics, 14(5), 2250050 (2022) .

(d)    "Gradient-based topology optimization of soft dielectrics as tunable phononic crystals" Composite Structures 280, 114846 (2022).

(e)    "Low frequency and wide band gap metamaterial with divergent shaped star units: Numerical and experimental investigations " Applied Physics Letters, 115(25) (2019).

 Moderate editing of English language required

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

In this manuscript, the vibration isolation design of a re-entrant negative Poisson ratio metamaterial is investigated. The proposed idea is interesting, attractive, and innovative. Before publishing, it is recommended that authors check the following items:

1-    The text of the manuscript should be reviewed in terms of grammar, spelling, and writing.

2-    The background of research and review of previous works are poor. The performance comparison table is required. It is recommended to use the following up-to-date articles:

DOI: 10.4218/etrij.2018-0013

DOI: 10.1109/TCPMT.2020.3042963

DOI: 10.1016/j.matdes.2023.111810

DOI: 10.3390/ma16134566

DOI: 10.1002/mmce.22006

3-    Theoretical relationships and electromagnetic formulas are very limited. Please provide related relations with the analysis of electric and magnetic fields, Poynting vector, and surface current density.

4-    For all frequencies, report each of the three characteristics Relative Permittivity (Re and Im), Relative Permeability (Re and Im), and Reflection Index.

5-    Explain how suitable this structure is for use in millimeter-wave applications?

    The text of the manuscript should be reviewed in terms of grammar, spelling, and writing.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

Accept. 

Minor editing of English language required