Optical Fingerprint for Gas Identification at Room Temperature Using Light-Activated a-IGZO Thin Films and Machine Learning

Sensors and Actuators A Physical, Journal Year: 2025, Volume and Issue: unknown, P. 116482 - 116482

Published: March 1, 2025

Language: Английский

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Integrating Vacancies and Defect Levels in Heterojunctions to Synergistically Enhance the Performance of H₂S Chemiresistors for Periodontitis Diagnosis

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Exhaled breath is considered an important source of samples and a reservoir biomarkers, especially for disease diagnosis. In this study, we developed ultrasensitive point-of-care gas sensor the analysis hydrogen sulfide (H2S), which typical biomarker periodontitis. A high-performance metal oxide semiconductor (MOS)-based chemiresistive H2S was by integrating Fe-doped MoO3-x onto TiO2 nanotube arrays. The substitution Fe atoms into not only induced oxygen vacancies, but also generated defect levels in MoO3-x/TiO2 heterostructure, thus synergistically activating sensing reaction at room temperature under ambient light. resulting exhibited ultrahigh sensitivity, fast response/recovery ability, wide-range response to concentrations up 400 ppm. Furthermore, device maintained more than 95% its original 70% relative humidity. With subparts-per-billion limit detection (the LOD 0.34 ppb), present represents most sensitive chemiresistor reported date room-temperature, real-time monitoring concentration changes healthy subjects, as well distinguishing periodontitis patients individuals. This study utilizes synergistic action defects provide effective route developing MOS-based sensors

Language: Английский

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Nano biosensors: Classification, electrochemistry, nanostructures, and optical properties

Results in Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 103428 - 103428

Published: Nov. 1, 2024

Language: Английский

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Structure-regulated enhanced Raman scattering on a semiconductor to study temperature-influenced enantioselective identification

Chemical Science, Journal Year: 2024, Volume and Issue: 15(19), P. 7308 - 7315

Published: Jan. 1, 2024

Combining structural regulation with photo induced charge transfer (PICT), a surface and interference co-enhanced Raman scattering (SICERS) platform was developed on corrugated TiO 2 nanotube arrays (c-TiO NTs).

Language: Английский

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MnOx-encapsulated LaMnO3 core-shell structures with Au interactions for enhanced CO oxidation catalysis

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: 366, P. 125018 - 125018

Published: Jan. 2, 2025

Language: Английский

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MOF nanoflowers-based flexible portable NO sensors for human airway inflammation detection

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156184 - 156184

Published: Sept. 1, 2024

Language: Английский

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Enhancing sensitivity and selectivity in gas sensors: A novel approach using metal oxide-conducting polymer composites

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 172, P. 113726 - 113726

Published: Dec. 9, 2024

Language: Английский

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Developing Solid-State Single-, Arrayed-, and Composite-Nanopore Sensors for Biochemical Sensing Applications

Accounts of Materials Research, Journal Year: 2024, Volume and Issue: 5(6), P. 761 - 771

Published: May 16, 2024

ConspectusIons, small molecules, and biomacromolecules are important components of the human body. They usually play roles in various physiological pathological events, showing a close relationship with health. However, due to ultralow concentrations these substances presence interfering chemicals, accurate reliable measurement ions molecules remains huge challenge. Nanopore sensors, which combine nanofluidic electrochemical technologies, have received great deal attention recent years. sensing is generally realized by measuring behaviors nanopores, endows this technique advantages high sensitivity, fast response, sampling frequency, experimental simplicity. In addition, owing confinement effect, interaction between analytes nanopore greatly enhanced, can further improve even achieving single-entity analysis. With development materials science, micro/nanoprocessing mass transport theories at nanoscale, sensors established themselves as promising tool for analysis ions, biomolecules, nanoparticles. materials, core be classified into three categories based on pore structure: single arrayed composite nanopores. Single nanopores include two-dimensional (2D) material glass/quartz nanopipettes. The single-pore structure offer sensitivity spatial resolution, making suitable Arrayed consist large number orderly arranged pores, including polymer metal oxide Arrayed-nanopore possess advantages, easy preparation, low cost, throughput, them widely applicable biochemical environmental Composite other hand, such conductive polymers plasmonic metals, enhance accuracy sensing. Through introducing recognition elements analyte produce predictable changes properties, diameter, shape, surface charge, wettability, resulting readable ion-current signals.In Account, we summarize advancements nanopore-sensing mechanisms, practical applications, mainly work published our group. We first briefly introduce single-, arrayed-, composite-nanopore their corresponding fabrication methods then functionalization techniques employed incorporate sites within Then, provide glimpse fundamentals sensing, ion mechanisms different strategies. Whereafter, present applications sensors. Finally, discuss challenges opportunities improving performance an outlook future technique.

Language: Английский

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Homochiral light-sensitive metal-organic framework photoelectrochemical gated transistor for enantioselective discrimination of monosaccharides

Biosensors and Bioelectronics, Journal Year: 2024, Volume and Issue: 258, P. 116336 - 116336

Published: April 25, 2024

Language: Английский

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Integrating Photoelectrochemical Feature on a Hydrovoltaic Chip with High-Salinity Adaption as a Self-Powered Device for Formaldehyde Monitoring

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(5), P. 2520 - 2528

Published: May 9, 2024

Alternative energy sources are required due to the decline in fossil fuel resources. Therefore, devices that utilize hydrovoltaic technology and light have drawn widespread attention because they emission-free solar is inexhaustible. However, previous investigations mainly focused on accelerating water evaporation rate at electrode interface. Here, a cooperative photoelectrochemical effect chip achieved using NH2-MIL-125-modified TiO2 nanotube arrays (NTs). This device demonstrated significantly improved evaporation-triggered electricity generation. Under LED illumination, open-circuit voltage (VOC) of NH2-MIL-125/TiO2NTs active layer was enhanced by 90.3% (up 400.2 mV). Furthermore, prepared showed good high-salinity tolerance, maintaining 74.6% its performance even 5 M NaCl. By introducing Schiff-based reaction between formaldehyde, fully integrated flexible sensor successfully fabricated for formaldehyde monitoring, low limit detection 5.2 × 10–9 achieved. novel strategy improving offers completely new general approach construct self-powered point-of-care sensing.

Language: Английский

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