Published: Jan. 1, 2024
Language: Английский
Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 408, P. 135548 - 135548
Published: Feb. 27, 2024
Language: Английский
Citations
12
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 10, 2024
Abstract Chemoresponsive dyes offer the potential to selectively detect volatile organic compounds (VOCs) unique certain disease states. Among different VOC sensing techniques, colorimetric offers advantage of facile recognition. However, it is often challenging discern color changes by naked eye. Here, highly sensitive sensor arrays from dye‐incorporated colloidal photonic crystals (dye‐cPhCs) are reported. cPhCs scalably fabricated on a 4‐inch wafer spin‐coating silica nanoparticles (NPs) dispersed in photo‐cross‐linkable monomer, where gradient shear flow along film thickness creates densely‐packed square NPs top layers, whereas bulk quasi‐amorphous with larger periodicities. The broadened reflection peak allows for augmented dye absorption originating overlap between bandgap edge cPhC and peak, leading more noticeable change upon exposure VOCs. array generates distinct difference maps acetaldehyde, acetone, acetic acid, respectively, without any data amplification. limit detection acid 1, 0.1, 0.02 ppm, respectively. Moreover, can be diagonalized visually intuitive pattern recognition, principal component analysis at reduced dimensionality demonstrated.
Language: Английский
Citations
9
ACS Sensors, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 18, 2024
The evaluation of selectivity/cross-sensitivity is one the most important tests for gas sensor development, particularly that based on chemiresistive technology. It known sensors suffer from low selectivity when they provide sensitivity to several analytes. Typically, testing involves independently assessing a sensor's response specific gas. However, there growing need evaluate performance with interfering gases or mixtures since are always exposed in practice. Despite great importance characterization, currently, no standard methods at conditions target coexists compounds, which mimics real conditions. We outlined four main researchers use cross-sensitivity sensors. highlights key aspects test performance, assessment methodologies, and procedure features, attempting classify them by their distinct characteristics. This review covers essentials properties, adsorption desorption processes, molecule interactions. Finally, we tried address lack standardized protocols evaluating sensors' guide researchers.
Language: Английский
Citations
7
Materials Science in Semiconductor Processing, Journal Year: 2024, Volume and Issue: 178, P. 108429 - 108429
Published: April 16, 2024
Language: Английский
Citations
4
Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1013, P. 178475 - 178475
Published: Jan. 1, 2025
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160923 - 160923
Published: Feb. 1, 2025
Language: Английский
Citations
0
Advanced Electronic Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 9, 2025
Abstract Flexible gas sensing technologies are essential for a wide range of environments and applications, from wearable devices to large‐scale industrial systems. Among various approaches, colorimetric stands out its distinct advantages, including energy‐free operation, intuitive visual feedback, high resistance environmental disturbances. Leveraging ultrathin resonators, achieves enhanced chromaticity angular stability. In this study, flexible sensor is introduced based on resonator array integrated with polyvinyl alcohol (PVA). This nearly 100% coverage the standard RGB color gamut, enabling precise visually distinguishable detection. Fabricated substrate, it demonstrates remarkable robustness, maintaining consistent under incident light angle variations up 60°. capability, combined rapid response times 180 ms PVA swelling 210 shrinking, highlights sensor's adaptability diverse industrial‐scale monitoring. Furthermore, evaluated volatile organic compounds (VOCs) imaging conditions, showcasing potential image‐based analysis accurate VOC Notably, demonstrated ability detect concentrations that indistinguishable using single by simultaneously analyzing data four arrays.
Language: Английский
Citations
0
Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113698 - 113698
Published: April 1, 2025
Language: Английский
Citations
0
Sensors, Journal Year: 2023, Volume and Issue: 23(17), P. 7319 - 7319
Published: Aug. 22, 2023
Real-time monitoring of volatile organic compounds (VOCs) is crucial for both industrial production and daily life. However, the non-reactive nature VOCs their low concentrations pose a significant challenge developing sensors. In this study, we investigated adsorption behaviors typical (C2H4, C2H6, C6H6), on pristine Pt-decorated SnS monolayers using density functional theory (DFT) calculations. Pristine have limited charge transfer long distances to VOC molecules, resulting in insensitivity. The introduction Pt atoms promotes transfer, creates new energy levels, increases overlap states, thereby enhancing electron excitation improving gas sensitivity. exhibited high sensitivities 241,921.7%, 35.7%, 74.3% towards C2H4, C6H6, respectively. These values are 142,306.9, 23.8, 82.6 times higher than those monolayers, Moreover, moderate energies adsorbing C2H6 C6H6 molecules ensure that possess good reversibility with short recovery time at 298 K. When heated 498 K, C2H4 desorbs from surface monolayer 162.33 s. Our results indicate could be superior candidates sensing selectivity, sensitivity, reversibility.
Language: Английский
Citations
9
Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 377, P. 115721 - 115721
Published: Oct. 1, 2024
Language: Английский
Citations
2