Nanofibers enabled advanced gas sensors: A review

Lang, Kening; Liu, Tianyi; Padilla, Daniel J.; Nelson, Marriana; Landorf, Christopher W.; Patel, Rishi J.; Ballentine, Mark L.; Kennedy, Alan J.; Shih, Wu-Sheng; Scotch, Adam; Zhu, Jiadeng

doi:10.1016/j.asems.2024.100093

Cited by 4 publications

(1 citation statement)

References 134 publications

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“…Nanomaterial-based hybrid nanofibers and sensor arrays are employed to detect and treat VOCs [13][14][15][16]. Some of these systems have also proven to be valuable for monitoring specific VOC mixtures from exhaled breath in airborne virus detection [17].…”

Section: Introductionmentioning

confidence: 99%

Real-world evaluation of a QCM-based biosensor for exhaled air

Juste-Dolz,

Teixeira,

Pallás-Tamarit

et al. 2024

Anal Bioanal Chem

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The biosensor, named “virusmeter” in this study, integrates quartz crystal microbalance technology with an immune-functionalized chip to distinguish between symptomatic patients with respiratory diseases and healthy individuals by analyzing exhaled air samples. Renowned for its compact design, rapidity, and noninvasive nature, this device yields results within a 5-min timeframe. Evaluated under controlled conditions with 54 hospitalized symptomatic COVID-19 patients and 128 control subjects, the biosensor demonstrated good overall sensitivity (98.15%, 95% CI 90.1–100.0) and specificity (96.87%, 95% CI 92.2–99.1). This proof-of-concept presents an innovative approach with significant potential for leveraging piezoelectric sensors to diagnose respiratory diseases. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Real-world evaluation of a QCM-based biosensor for exhaled air

Juste-Dolz,

Teixeira,

Pallás-Tamarit

et al. 2024

Anal Bioanal Chem

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Unveiling the Stability of Proper Polyethyleneimine‐Functionalized Carbon Nanotube Composites‐Derived Chemiresistive CO₂ Sensors

Liu,

Lang,

Patel

et al. 2024

Advanced Sensor Research

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Branched polyethyleneimine (PEI), consisting of numerous imine groups, is employed for CO2 gas detection, attributed to the interaction between imine groups and CO2. Incorporating functionalized carbon nanotubes (f‐CNTs) into PEI developed in recent years has remarkably enhanced sensor performance. However, the active characteristic of imine groups makes the sensor susceptible to aging. In this research, the aging of PEIs with different molecular weights is systematically studied and compared along with their thermal stability and structure migration under various conditions, explored using thermogravimetric analysis and Fourier‐transform infrared spectroscopy. Furthermore, an ink composed of high‐molecular‐weight PEI and f‐CNTs is successfully developed, which shows outstanding printability according to its rheology results. The stability of the ink is assessed by a Turbiscan analyzer and compared with the ink composed of low‐molecular‐weight PEI. The ink with high‐molecular‐weight PEI is utilized to prepare CO2 sensors via screen printing, which are then tested by in‐house‐built electronics. The sensors achieve a detection range of 300–2000 ppm CO2, which could indicate robust sensing performance even after 40 continuous testing cycles. It should be noted that the resultant sensors have realized a wider measurement range and superior stability than other reported PEI/CNT‐based CO2 sensors, further facilitating their practical applications.

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Light-Activated Nanofibers: Advances in Photo-Responsive Electrospun Polymer Technologies

Sharif Bakhsh,

Tavakoli Dare,

Jafari

et al. 2024

Polymer-Plastics Technology and Materials

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Nanofibers enabled advanced gas sensors: A review

Cited by 4 publications

References 134 publications

Real-world evaluation of a QCM-based biosensor for exhaled air

Real-world evaluation of a QCM-based biosensor for exhaled air

Unveiling the Stability of Proper Polyethyleneimine‐Functionalized Carbon Nanotube Composites‐Derived Chemiresistive CO₂ Sensors

Light-Activated Nanofibers: Advances in Photo-Responsive Electrospun Polymer Technologies

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Nanofibers enabled advanced gas sensors: A review

Cited by 4 publications

References 134 publications

Real-world evaluation of a QCM-based biosensor for exhaled air

Real-world evaluation of a QCM-based biosensor for exhaled air

Unveiling the Stability of Proper Polyethyleneimine‐Functionalized Carbon Nanotube Composites‐Derived Chemiresistive CO2 Sensors

Light-Activated Nanofibers: Advances in Photo-Responsive Electrospun Polymer Technologies

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Product

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Unveiling the Stability of Proper Polyethyleneimine‐Functionalized Carbon Nanotube Composites‐Derived Chemiresistive CO₂ Sensors