Ammonia measurement in exhaled human breath using PCF sensor for medical applications

Abbaszadeh, Aryan; Makouei, Somayeh; Meshgini, Saeed

doi:10.1016/j.photonics.2021.100917

Cited by 21 publications

(6 citation statements)

References 45 publications

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“…In addition, NH 3 is an important biomarker. Changes in the amounts of certain vapours in the exhaled breath indicate the state of disease; thus, the analysis of the exhaled human breath is a fast, non-invasive, and cheap route for the early detection of many diseases [14]. High amounts of NH 3 are associated with liver and kidney damage, Reye's syndrome, and various congenital metabolic conditions including urea cycle disorders [15,16].…”

Section: Nh 3 Gasmentioning

confidence: 99%

Resistive gas sensors for the detection of NH₃ gas based on 2D WS₂, WSe₂, MoS₂, and MoSe₂: a review

Mirzaei,

Alizadeh,

Ansari

et al. 2024

Nanotechnology

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Transition metal dichalcogenides (TMDs) with a two-dimensional (2D) structure and semiconducting features are highly favorable for the production of NH3 gas sensors. Among the TMD family, WS2, WSe2, MoS2, and MoSe2 exhibit high conductivity and a high surface area, along with high availability, reasons for which they are favored in gas-sensing studies. In this review, we have discussed the structure, synthesis, and NH3 sensing characteristics of pristine, decorated, doped, and composite-based WS2, WSe2, MoS2, and MoSe2 gas sensors. Both experimental and theoretical studies are considered. Furthermore, both room temperature and higher temperature gas sensors are discussed. We also emphasized the gas-sensing mechanism. Thus, this review provides a reference for researchers working in the field of 2D TMD gas sensors.

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Section: Nh 3 Gasmentioning

confidence: 99%

Resistive gas sensors for the detection of NH₃ gas based on 2D WS₂, WSe₂, MoS₂, and MoSe₂: a review

Mirzaei,

Alizadeh,

Ansari

et al. 2024

Nanotechnology

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“…As shown in the follow-up of respiratory disease, a spectrum of pulmonary manifestations, ranging from dyspnea and hypoxia to fibrotic lung damage are commonly persistent symptoms and signs . Therefore, pulmonary function tests (PFTs) have been one of the necessary examinations and quick indications for the diagnosis for respiratory diseases, − such as asthma, cardiac arrest, respiratory adverse events, , clinical deterioration, , and chronic obstructive pulmonary disease (COPD). , This review highlights the measuring methods for pulmonary capacity and pulmonary ventilation using WOS technologies. Pulmonary capacity refers to the total gas volume in the lungs, and pulmonary ventilation generally means the amount of air inhaled or exhaled per minute.…”

Section: Pulmonary Functionmentioning

confidence: 99%

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

et al. 2022

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Recent advances in the Medical Internet of Things (MIoT) and big data enable a prospering platform for pervasive healthcare and facilitate the transformation from hospital-centered to human-centered healthcare. Wearable devices as human interfaces provide first-hand data and real-time monitoring, which are key technologies in the MIoT. Several remarkable surveys have been conducted to summarize the recent progress in wearable sensors and systems for the MIoT and pervasive medicine. However, few have focused on wearable optical sensing (WOS) technologies, which is an emerging sensing modality in wearable devices. WOS can achieve high precision, high compatibility, high anti-interference, and low motion artifacts for human vital signal acquisition, which are particularly useful in special scenarios such as intensive care units (ICUs). These technologies can also be integrated with smart fabrics or mobile computing for out-of-hospital healthcare. This work provides the first literature review of WOS for pervasive medicine. We aim to systematically summarize the emerging WOS technologies in the MIoT for disease diagnosis and health monitoring. Specifically, this review covers the technical bases and design principles of major WOS technologies and their application domains for monitoring and treatment. We also discuss the opportunities and challenges, especially in the COVID-19 outbreak.

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“…The measurement of NH3 is crucial in applications like air quality monitoring [2], [3], regulation of agricultural and livestock practices [4], [5], [6], human breath analysis for medical applications [7], [8], and wastewater monitoring [9], [10]. In addition, the chemical industry produces ammonia in large quantities to produce fertilizers and for use in refrigeration systems.…”

Section: Introductionmentioning

confidence: 99%

Low Cost, Flexible, Room Temperature Gas Sensor: Polypyrrole-Modified Laser-Induced Graphene for Ammonia Detection

Santos-Ceballos,

Salehnia,

Romero

et al. 2024

IEEE Sensors J.

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The electrochemical synthesis of polypyrrole (PPy) on laser-induced graphene (LIG) electrodes is investigated in this study, along with the gas sensing applications of these modified laser-tailored materials. A simple and scalable method for the lowcost, large-scale production of polypyrrole LIG nanocomposites (PPy@LIG NCs) is proposed. This nanocomposite is subsequently applied to design chemo-resistive flexible gas sensors to detect ammonia (NH3) levels at room temperature. Following a brief gas exposure, PPy@LIG NCs sensors demonstrate changes in resistance with a sensitivity 14 times higher than that of pure LIG. Moreover, excellent repeatability in results and a low detection limit of 1 ppm were achieved. The LIG formation and electrochemical synthesis of PPy were confirmed through Raman spectroscopy and FTIR spectroscopy. The analysis by FE-SEM and TEM verified the formation of PPy@LIG NCs. In conclusion, this work introduces the novel PPy@LIG nanocomposites and its application in gas sensing, showcasing their unique selectivity, enhanced sensitivity, and cost-effective production. These attributes mark a significant step forward, presenting new possibilities for the development of advanced gas-sensing systems aimed at improving air quality monitoring.

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Ammonia measurement in exhaled human breath using PCF sensor for medical applications

Cited by 21 publications

References 45 publications

Resistive gas sensors for the detection of NH₃ gas based on 2D WS₂, WSe₂, MoS₂, and MoSe₂: a review

Resistive gas sensors for the detection of NH₃ gas based on 2D WS₂, WSe₂, MoS₂, and MoSe₂: a review

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

Low Cost, Flexible, Room Temperature Gas Sensor: Polypyrrole-Modified Laser-Induced Graphene for Ammonia Detection

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Ammonia measurement in exhaled human breath using PCF sensor for medical applications

Cited by 21 publications

References 45 publications

Resistive gas sensors for the detection of NH3 gas based on 2D WS2, WSe2, MoS2, and MoSe2: a review

Resistive gas sensors for the detection of NH3 gas based on 2D WS2, WSe2, MoS2, and MoSe2: a review

Wearable Optical Sensing in the Medical Internet of Things (MIoT) for Pervasive Medicine: Opportunities and Challenges

Low Cost, Flexible, Room Temperature Gas Sensor: Polypyrrole-Modified Laser-Induced Graphene for Ammonia Detection

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Product

Resources

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Resistive gas sensors for the detection of NH₃ gas based on 2D WS₂, WSe₂, MoS₂, and MoSe₂: a review

Resistive gas sensors for the detection of NH₃ gas based on 2D WS₂, WSe₂, MoS₂, and MoSe₂: a review