A differential evolution particle swarm optimization (DEPSO) is presented for the design of a high-phase-sensitivity surface plasmon resonance (SPR) gas sensor. The gas sensor is based on a bilayer metal film with a hybrid structure of blue phosphorene (BlueP)/transition metal dichalcogenides (TMDCs) and MXene. Initially, a Ag-BlueP/TMDCs-Ag-MXene heterostructure is designed, and its performance is compared with that of the conventional layer-by-layer method and particle swarm optimization (PSO). The results indicate that optimizing the thickness of the layers in the gas sensor promotes phase sensitivity. Specifically, the phase sensitivity of the DEPSO is significantly higher than that of the PSO and the conventional method, while maintaining a lower reflectivity. The maximum phase sensitivity achieved is 1.866 × 10 deg/RIU with three layers of BlueP/WS and a monolayer of MXene. The distribution of the electric field is also illustrated, demonstrating that the optimized configuration allows for better detection of various gases. Due to its highly sensitive characteristics, the proposed design method based on the DEPSO can be applied to SPR gas sensors for environmental monitoring.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10611094 | PMC |
| http://dx.doi.org/10.3390/s23208401 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optomechanical energy enhanced BF-QEPAS for fast and sensitive gas sensing.
Photoacoustics
February 2025
College of Control Science & Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.
Traditional beat frequency quartz-enhanced photoacoustic spectroscopy (BF-QEPAS) are limited by short energy accumulation times and the necessity of a decay period, leading to weaker signals and longer measurement cycles. Herein, we present a novel optomechanical energy-enhanced (OEE-) BF-QEPAS technique for fast and sensitive gas sensing. Our approach employs periodic pulse-width modulation (PWM) of the laser signal with an optimized duty cycle, maintaining the quartz tuning fork's (QTF) output at a stable steady-state level by applying stimulus signals at each half-period and allowing free vibration in alternate half-periods to minimize energy dissipation.
View Article and Find Full Text PDFNbCT/MoSe composites for a highly sensitive NH gas sensor at room temperature.
Talanta
December 2024
Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China. Electronic address:
The detection of ammonia (NH)gas holds significant importance in both daily life and industrial production. In this study, the NbCT/MoSe sensor was synthesized using a one-step hydrothermal method and applied for NH detection. The morphology and elemental composition of the composites were analyzed through a series of characterization techniques including XRD, TEM, SEM, and XPS, confirming the successful synthesis of NbCT/MoSe composite with the optimal mass ratio.
View Article and Find Full Text PDFNumerical optimization of anti resonant hollow core fiber for high sensitivity methane detection.
Sci Rep
December 2024
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran.
This study presents an innovative methane gas sensor design based on anti-resonant hollow-core fiber (AR-HCF) technology, optimized for high-precision detection at 3.3[Formula: see text]. Our numerical analysis explores the geometric optimization of the AR-HCF's structural parameters, incorporating real-world component specifications.
View Article and Find Full Text PDFAdsorption and Sensing Performance of Transition Metal Decorated Graphene Quantum Dots for AsH, NH, PH, and HS.
Langmuir
December 2024
Department of Physics, National Institute of Technology, Jamshedpur-831014, India.
We have conducted a systematic study employing density functional theory (DFT) and quantum theory of atoms in molecules (QTAIM) to explore the gas sensing capabilities of nitrogen-doped single vacancy graphene quantum dots (SV/3N) decorated with transition metals (TM = Mn, Co, Cu). We have studied the interactions between TM@SV/3N and four different target gases (AsH, NH, PH, and HS) through the computation of adsorption energies, charge transfer, noncovalent interaction, density of states, band gap, and work function for 12 distinct adsorption systems. Our comprehensive analysis included an in-depth assessment of sensors' stability, sensitivity, selectivity, and reusability for practical applications.
View Article and Find Full Text PDFThe Role of Biosilica and Its Potential for Sensing Technologies: A Review.
J Biotechnol
December 2024
Laboratory of Electrochemistry and Nanotechnology, Institute of Technology and Research (ITP), Aracaju, Sergipe, Brazil; Process Engineering Graduate Program (PEP), Tiradentes University, Aracaju, Sergipe, Brazil.
Efficiently managing agricultural waste while innovating to derive value-added products is a significant challenge in the 21 century. In recent decades, these by-products have been increasingly explored as alternative sources for materials such as biosilica. Biosilica is renowned for its high surface area, biocompatibility, chemical stability, and modifiable surface, which makes it suitable for various applications.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!