Venue: ESPC 2022 Competition

Reviews:

final_score: rating: 2: Borderline. Accept this work only if room. 
review_content: summary: SENSING AND CAPTURING THE GASEOUS STATE OF CARBON THROUGH NOVEL BIO CATALYTIC RESISTIVE SENSOR is border line because it does meet the general requirements of the challenge. There is a clear need for low cost green based gas sensors for measuring and storing CO2. However, the implementation is laboratory based using Soxhlet distillation and does not use IoT, networking, data analysis, or data visualisation which are goals of the student-based environmental monitoring challenge. 
strengths: SENSING AND CAPTURING THE GASEOUS STATE OF CARBON THROUGH NOVEL BIO CATALYTIC RESISTIVE SENSOR introduces an a  next generation of detection techniques for monitoring volatile organic compounds (VOCs) using green, bio-inspired miracle leaf extracts, which are then coated with copper coil for the detection of carbon dioxide at ambient temperature. 

The market potential bio catalytic resistive sensors in unknown, however the application of biosensors in medical domain in high value. 

The method description is clear indicating that approach was designed before the competition. Although It is unclear why the miracle leaf was chosen, where it came from, and justification for the amount used.   

It is possible that with a clear justification a patent  application for industrial manufacturing could be made. 

weaknesses: SENSING AND CAPTURING THE GASEOUS STATE OF CARBON THROUGH NOVEL BIO CATALYTIC RESISTIVE SENSOR is more of a chemistry solution and not within the domain of IoT and computation.  

The solution suggest great promise for addressing monitoring of CO2 concentration.  However, it's development is not immediately translatable to ‘outside-the-lab’ scenarios that differ from controlled laboratory settings. There are challenges include enabling long-term storage of the plant extracts.  There is an absence of autonomous functionality.. 

This research appears to have occurred before the competition.
review_title: null

final_score: rating: 4: Accept + Potential Winner. This work can be presented and it is a strong contender to win this competition.
review_content: summary: The author has presented the sensing mechanism towards the carbon dioxide capture using plant extract. 
strengths: 1. The idea of using the plants extracts seems interesting.
2. The report has been written in well manner.

weaknesses: 1. Should have given more clarity on Fig.1
2. Explanation on the type of planta are missing.
3. Ambient testing and analysis is required to understand the performance in various environmental condition.
review_title: null

final_score: rating: 2: Borderline. Accept this work only if room. 
review_content: summary: The authors present their approach for building a $CO_2$ sensor by coating copper coils with plant extracts and using the change in resistance to quantify the amount of $CO_2$ in the air. 
strengths: - The problem of air quality monitoring is increasingly becoming important, and there is a need to explore different approaches to measure the amount $CO_2$ in the air.
- The authors have presented the motivated well, and discussed their approach. 
- They have a working demonstration to support their hypothesis.  
weaknesses: - I would recommend the authors to avoid flowery language such as miracle leaf in scientific venues. 
- What is the source of the data for Figure 1? What are the metrics for each of the variables?
- **The key shortcoming is the methology is not clear. Which plants were used for the experiments? Why and how were they selected? Why was the given method used? What is the chemical composition of the plant extracts?**
- The video was difficult to follow. It would have been nice to see a table which shows the resistance of the coil before coating, the resistance of the coils after coating, and the resistance when $CO_2$ is passed through the coil. These values are present in the report and video, however they are scattered and it would be nice to have them in one location for comparison. 
- It is also not clear how sensitive is the coil the $CO_2$ in the air and not concentrated $CO_2$?
review_title: null

final_score: rating: 3: Accept. This work can be presented during the event, but it is not a contender to win the competition.
review_content: summary: This report presents a methods to use plant extracts to improve the functionality of resistive gas sensors, especially for detecting CO2. 
strengths: 1. The logic of the report is very clear and well described. 
2. The idea is very interesting to use the plan extraction to detect the CO2.
weaknesses: 1. it is not so clear to observe from the spider-web diagrams shown in Figure 1 that the resistive gas sensor exhibits attractive advantages compared with other gas sensors. 
2. The experiment only shows that the resistance increases when CO2 passes, which means that this methods could be used for detection of CO2. However, some shortage exists, for example a) how the proposed method works in different situations, such as different temperature and different CO2 concentrations, b) how the propose method compared with other methods, c) the proposed method is low-cost, however, the plan extraction is volatile, which means that this method might be not stable and hard to be used in real deployment. 
3. it would be nice to use some terminology to describe the results, such as response (%) = | resistance of the sensors when CO2 pass- resistance of the sensors without CO2 pass|/resistance of the sensors without CO2 pass X100
review_title: null

final_score: rating: 3: Accept. This work can be presented during the event, but it is not a contender to win the competition.
review_content: summary: The report presents a way of detecting CO2 by the change in the resistance when CO2 is passed over a bio-coated resistor. The three synthesized leaf extracts were coated with three different copper coils separately, and it was investigated for the detection of carbon dioxide at ambient temperature using a laboratory-made sensor setup. 
strengths: 1. The report is decently written
2. The results look interesting.
weaknesses: 1. Formatting could have been much better. Also, there are simple typos. The presentation could have been bit better.
2. It is not clear on what basis plants were selected. What is a miracle plant?
3. The results are unclear regarding repeatability. 
4. Video presentation does not have audio. 
5. There is no comparison with existing schemes.
review_title: null

Decision: Accept