Foot Drop Stimulation via Piezoelectric Energy Harvester
Round 1
Reviewer 1 Report
It’s a very nice work, some comments need to be answered:
1. Figure-3: what is purpose of PEH housing assembly?
2. Line no.203 – 207: ‘Six layer of PVDF were connected in parallel’. Kindly provide the image of this connection
3. In Table.1, piezo-coeffcient value d31 were provided. Why author does not provide d33 value, though d33 value plays measure role for such type of application.
4. Provide the image of prototype of packaging of detail provided in Table.2
5. Line 253-257: if possible provide the schematic diagram of these forces.
6. in Table.no.2: why contact angle of plates is necessary
Author Response
Dear reviewer,
Please see the attachment.
Kind regards,
Parham Soozandeh
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The article entitled "Foot Drop Stimulation via Piezoelectric Energy Harvester" is focused on the development and implementation of a shoe-mounted piezoelectric energy harvester that, working in tandem with a functional electrical stimulation system, can be used for foot drop stimulation or can power sensors such as blood pressure, glucose meter, or activity trackers. Harvesting energy is one of the most promising techniques in response to the global energy problem without depleting natural resources, and piezoelectric energy harvesters have great potential for practical applications, especially in the field of medical devices. Therefore, the article is interesting and relevant, and the main conclusions were confirmed by experimental, mathematical, and simulation analyses on the prototype. My comment is listed below.
The introduction can be improved. The results of previous studies related to the development of shoe-mounted piezoelectric energy harvesters should be better covered. Additionally, it would be helpful to add references to a comparison between the use of an ankle foot orthosis and the use of functional electrical stimulation for foot drop rehabilitation.
Author Response
Dear reviewer,
Please see the attachment.
Kind regards,
Parham Soozandeh
Author Response File: Author Response.pdf
Reviewer 3 Report
In this manuscript, the authors design and implement a piezoelectric energy harvesting system aiming at stimulating the Tibialis anterios muscle to aid patients struggling with foot drop disability. The findings of this research activity provided a solid baseline for the feasibility of a shoe-mounted PEH and performed experimental, mathematical, and simulation analyses on the prototype. The topic addressed in this manuscript is technologically important and interesting. However, it can be further improved by properly addressing the below comments:
1) The main novelty of the present work should be highlighted. Please also clearly state the literature gap of the current study vis-à-vis the existing literature in the introduction clearly.
2) Lines 70-77, please cite the references immediately after commenting on them.
3) The element type and the number of elements in Figure 7 should be mentioned.
4) Please increase the font size in Figures 10 and 11
5) Reference incomplete. The following papers on energy harvester should be referenced on in the introduction to make the reference more complete:
[1] Narolia, T., Gupta, V.K. and Parinov, I.A., 2020. Design and analysis of a shear mode piezoelectric energy harvester for rotational motion system. Journal of Advanced Dielectrics, 10(03), p.2050008.
[2] Manan, A., Rehman, M.U., Ullah, A., Ahmad, A.S., Iqbal, Y., Qazi, I., Khan, M.A., Shah, H.U. and Wazir, A.H., 2021. High energy storage density with ultra-high efficiency and fast charging–discharging capability of sodium bismuth niobate lead-free ceramics. Journal of Advanced Dielectrics, 11(04), p.2150018.
[3] Chebanenko, V.A., Zhilyaev, I.V., Soloviev, A.N., Cherpakov, A.V. and Parinov, I.A., 2020. Numerical optimization of the piezoelectric generators. Journal of Advanced Dielectrics, 10(01n02), p.2060016.
Author Response
Dear reviewer,
Please see the attachment.
Kind regards,
Parham Soozandeh
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Authors revised the manuscript as per reviewer remarks. The manuscript seems ok for publication.
