Article
Engineering, Multidisciplinary
Jitendra Singh Tamang, Rudra Sankar Dhar, Akash Kumar Bhoi, Arun Kumar Singh, Somenath Chatterjee
Summary: Chalcogenide Glasses have gained recent interest in chemical and bio-sensing applications, particularly in the development of SPR Sensors. This paper illustrates the optical properties of chalcogenide and graphene materials using a Kretschmann SPR configuration, along with MATLAB environment and CTM method.
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Haoyuan Cai, Mengwei Wang, Zhuohui Wu, Jing Liu, Xiaoping Wang
Summary: We propose a high-sensitivity SPR biosensor based on a multilayer structure consisting of Au, MoS2, and graphene. Numerical simulations and experiments demonstrate that the sensor has a sensitivity about 2 times higher than the conventional Au-based SPR sensor, and the presence of MoS2 enhances the sensitivity. The fabricated sensor shows a very low limit of detection for okadaic acid.
Article
Acoustics
Emelina P. Vienneau, Kathryn A. Ozgun, Brett C. Byram
Summary: Thermal noise and acoustic clutter degrade ultrasonic image quality and cannot be separately measured in vivo. We derived and validated a method to quantify the individual contributions of thermal noise and acoustic clutter to image degradation by leveraging coherence characteristics.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Article
Physics, Multidisciplinary
S. T. Chui, Zhifang Lin, Zian Ji
Summary: We demonstrate the concept of resonance in noise through the example of current induced by an external electromagnetic field and noise current in split ring resonators. Both the signal and noise show resonances at the same frequencies, but their ratio varies with frequency and external driving field. This unexpected result suggests that the signal to noise ratio is not solely determined by the resonance frequency, highlighting the need for further research to improve device design.
Article
Instruments & Instrumentation
Rui Wang, Chunlan Liu, Yong Wei, Yudong Su
Summary: This study investigates the sensitivity enhancement effect of gold nanorods on fiber SPR sensors using simulation and experiments. It reveals that the aspect ratios of gold nanorods have a significant impact on sensing performance. After parameter optimization, the optimal refractive index sensitivity of 4465.53 nm/RIU was achieved, demonstrating the sensitivity enhancement effect of the gold nanorods.
Article
Chemistry, Physical
Han Liang, Yue Feng, Hongchen Liu, Wei Han, Tao Shen
Summary: This article presents a highly sensitive photonic crystal fiber humidity sensor based on surface plasmon resonance (SPR). By coating and optimizing the structural parameters, the sensor exhibits high sensitivity and humidity sensitivity. The graphene coating helps to enhance the sensitivity of the sensor. This sensor can be widely used in intelligent detection and security monitoring.
Article
Engineering, Electrical & Electronic
Carlos Biurrun-Quel, Carlos del-Rio
Summary: In this paper, we investigate the noise analysis of multibeam passive beamforming networks and propose a proper formulation to avoid overestimating the noise generated by the network. We demonstrate that the inherent spatial diversity of this type of networks can improve the signal-to-noise ratio, similar to digital architectures, with a penalty due to insertion loss. Two generalized equivalent circuits are proposed and a numerical example is presented to illustrate this phenomenon.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Thermodynamics
Jiaming Bi, Jiaxin Liu, Peng liu, Yankun Jiang
Summary: This study used a plate heat exchanger from a commercial vehicle made by one of the biggest Chinese manufacturers as the research object. By establishing a simplified model, conducting grid independence tests, and analyzing 25 structural parameter combinations, it was found that the Chevron angle has the strongest influence on the comprehensive performance.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Optics
Seyyed Mohammad Ghasem Mousavi-Kiasari, Kamyar Rashidi, Davood Fathi, Hussein Taleb, Seyed Mohammad Mirjalili, Vahid Faramarzi
Summary: This paper presents optimal graphene-based multilayer SPR biosensors for highly sensitive detection of biomolecules. The biosensor structures are optimized using a multi-objective gray wolf optimizer, aiming to maximize sensitivity and minimize FWHM. The optimized structures exhibit high sensitivity, low FWHM, and are easy to implement. The results pave the way for the development of highly-sensitive SPR biosensors.
Article
Telecommunications
K. Asha, Narayan Krishnaswamy, N. K. Suryanarayana
Summary: This work presents an analysis of microcantilever beams and ARROW microcantilever waveguides. By applying varying electric voltage, the microcantilever beams made of silicon nitride material can be deformed, leading to displacement. By integrating MEMS cantilever with ARROW waveguide, a new ARROW microcantilever waveguide is created, which demonstrates high sensitivity and quality factor. The parameters are studied by changing the air gap distance between the cantilever waveguide and output waveguide. The proposed ARROW microcantilever waveguide achieves a maximum FDTD sensitivity of 73.78 nm/RIU.
WIRELESS PERSONAL COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Xuefen Zhu, Zhengpeng Lu, Teng Hua, Fan Yang, Gangyi Tu, Xiyuan Chen
Summary: This paper develops a semi-hardware meaconing platform and proposes a novel GPS meaconing spoofing detection method based on Improved Ratio combined with Carrier-to-noise Moving variance (C/N-0 - MV). The effectiveness has been validated theoretically and experimentally, showing a high detection rate when the meaconing signal has a certain power gain.
Article
Computer Science, Hardware & Architecture
Bechir Hamdaoui, Abdurrahman Elmaghbub, Siefeddine Mejri
Summary: This article discusses the limitations of existing DNN feature design methods for wireless device classification and proposes novel approaches to improve robustness and accuracy. By customizing DNN models based on the unique structures of RF communication signals and spectrum emissions, the proposed feature designs substantially enhance classification performance. The strategies presented show great potential for further improving DNN-based wireless device classification and address open research challenges in the field.
Article
Chemistry, Analytical
Frowin Ellermann, Philip Saul, Jan-Bernd Hoevener, Andrey N. Pravdivtsev
Summary: Benchtop NMR (btNMR) spectrometers have revolutionized NMR usage and significantly reduced costs. However, magnetic field cycling (MFC) experiments with precise timing and control over the magnetic field have not been available on btNMRs. This study presents a setup that enables MFC on btNMRs for chemical analysis and hyperpolarization, utilizing modern manufacturing techniques.
ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Joao Gois, Lucas Pereira
Summary: This article proposes a noise metric to assess the proportion of dataset noise relative to appliance consumption in Nonintrusive Load Monitoring (NILM). The results demonstrate that the proposed metric effectively quantifies noise proportion with respect to specific appliances across various data scenarios and complements other noise metrics in interpreting NILM experiments.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Multidisciplinary
Ziyang Wang, Jiarong Ye, Kunyan Zhang, Li Ding, Tomotaroh Granzier-Nakajima, Jeewan C. Ranasinghe, Yuan Xue, Shubhang Sharma, Isabelle Biase, Mauricio Terrones, Se Hoon Choi, Chongzhao Ran, Rudolph E. Tanzi, Sharon X. Huang, Can Zhang, Shengxi Huang
Summary: The study introduces a platform that utilizes graphene-assisted Raman spectroscopy and machine learning to rapidly screen Alzheimer's disease (AD) biomarkers in transgenic animal brains. By contacting monolayer graphene with brain slices, the accuracy of machine learning classification is significantly improved. The study also identifies AD biomarkers based on spectral feature importance map, providing important insights for AD research.
Article
Engineering, Electrical & Electronic
Ibrahim M. Mehedi, Mohd Heidir Mohd Shah
Summary: This paper introduces an adaptive generalized dynamic inversion (AGDI) control method for angular position tracking of the rotary flexible joint system while suppressing joint vibrations. The AGDI control utilizes equivalent control to enforce constraint dynamics and incorporates switching term based on sliding mode control for robustness. Experimental results demonstrate that AGDI control performs well in achieving desired response curves.
IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Md Amzad Hossain, Mehedi Hassan, Ibrahim Mustafa Mehedi, Md Mustafizur Rahman, Fatema Tuz Zahura, Md Rafiqul Islam Sheikh
Summary: By utilizing electronic coordinated control of governor and blade, this study examines four proposed techniques for reducing output fluctuations in a wind integrated hybrid power system. Through simulation analysis, case 2 proves to be the best in terms of wind farm output power characteristics, grid frequency fluctuations, and wind farm energy levels.
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
(2022)
Article
Engineering, Electrical & Electronic
Lway Faisal Abdulrazak, Md Biplob Hossain, Md Shofiqul Islam, Abdulhameed Fouad Alkhateeb, Ibrahim M. Mehedi, Sourav Roy, Md Sanwar Hossain, Md Amzad Hossain
Summary: A novel microstructure photonic crystal fiber-surface plasmon resonance sensor was developed in this study, demonstrating high wavelength sensitivity and amplitude sensitivity. The sensor showed excellent sensitivity and figure of merit at the optimal gold thickness, with strong linear fit within the detection range. Therefore, this sensor may be competitive in detecting analyte refractive index.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Computer Science, Information Systems
Ibrahim Mustafa Mehedi, Nordin Saad, Muawia Abdelkafi Magzoub, Ubaid M. Al-Saggaf, Ahmad H. Milyani
Summary: This work discusses the simulation and experimental demonstration of a genetic algorithm hybrid fuzzy-fuzzy controller (GA-HFFC) system to achieve speed control of a variable-speed induction motor (IM) drive based on a space vector pulse width modulation (SVPWM) technique. The proposed control approach, utilizing field-oriented control (FOC) principles and fuzzy controllers, shows practicality and effectiveness in diverse operating conditions.
Article
Mathematics
Mahendiran T. Vellingiri, Ibrahim M. Mehedi, Thangam Palaniswamy
Summary: In recent years, alternative engine technologies have been developed to resolve issues related to conventional vehicles. Electric vehicles (EVs) and hybrid electric vehicles (HEVs) are effective solutions for reducing carbon emissions in the transportation sector. It is also important to transition from traditional houses to smart houses and from classical vehicles to EVs or HEVs. By combining renewable energy sources such as solar photovoltaics, wind energy systems, and various forms of bio-energies with EVs or HEVs, the overall carbon footprint can be significantly reduced.
Article
Physics, Multidisciplinary
Md Mottahir Alam, Md Siam Talukder, Md Samsuzzaman, Asif Irshad Khan, Navin Kasim, Ibrahim Mustafa Mehedi, Rezaul Azim
Summary: This paper describes a wideband W-shaped slot-loaded solid U-shaped rectangular patch antenna for a microwave-based head imaging application. The antenna has a large bandwidth, omnidirectional radiation properties, and stable radiation characteristics. Experimental results show that the antenna performs well in head imaging applications.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Sourav Roy, S. M. Tasmeeh Ahsan, Ashraful Hossain Howlader, Diponkar Kundu, Shakil Mahmud Boby, Md. Rasidul Islam, Md. Shahrukh Adnan Khan, Shuvagoto Dhar, Md. Amzad Hossain
Summary: Semipolar InGaN-made green light-emitting diodes (LEDs) have attracted significant attention for their potential as replacements for polar (0001)-oriented LEDs due to reduced efficiency droop and green gap phenomenon. However, theoretical investigations comparing internal quantum efficiency, output power, and 3 dB bandwidth in non-c-plane-oriented InGaN green LEDs are lacking. This study examines the impact of strain-induced polarization field on major optical and electronic characteristics of In0.29Ga0.71N/GaN green LED along different crystal orientations using a modified ABC model. The results demonstrate that (1122)-oriented InGaN green LED exhibits superior performance in terms of internal quantum efficiency, droop ratio, light emission spectra, output power, and I-V profile.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Computer Science, Artificial Intelligence
Md. Mustafizur Rahman, Ajay Krishno Sarkar, Md. Amzad Hossain, Mohammad Ali Moni
Summary: This paper proposes a method for recognizing emotions based on EEG, using three non-linear features and eight ensemble learning approaches. The experimental results show that the Higuchi fractal dimension achieves the highest accuracy among the three features.
EXPERT SYSTEMS WITH APPLICATIONS
(2022)
Article
Materials Science, Ceramics
M. Burhanuz Zaman, Vipin Shrotriya, Amzad Hossain, Ibrahim M. Mehedi, Md. Mottahir Alam
Summary: The synthesis and characterization of Cu2SnS3 (CTS) thin film photocatalysts via a simple and economical spin coating sol gel method was conducted. The films showed a single phase pristine tetragonal CTS structure with Cu, Sn, and S oxidation states of +1, +4, and -2 respectively. The films exhibited polycrystalline nature and had an optimum energy band gap suitable for visible light photocatalysis. They showed high efficiency in degrading methylene blue (MB) dye under visible light illumination and maintained their activity after multiple reuse.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Nebras Sobahi, Mohd Imran, Mohammad Ehtisham Khan, Akbar Mohammad, Md. Mottahir Alam, Taeho Yoon, Ibrahim M. Mehedi, Mohammad A. Hussain, Mohammed J. Abdulaal, Ahmad A. Jiman
Summary: We synthesized Fe3O4/graphene nanocomposite for peroxide sensor with high selectivity and sensitivity. The nanocomposites were produced through a modified co-precipitation method and characterized using various techniques. The as-fabricated flexible electrode showed excellent electrocatalytic activity and exhibited a good linear range, high sensitivity, and low detection limit for H2O2 detection. The biosensor is cost-effective, stable, and highly reproducible.
Article
Medicine, General & Internal
Ibrahim M. Mehedi, K. Prahlad Rao, Fahad Mushhabbab Alotaibi, Hadi Mohsen Alkanfery
Summary: This study explores the use of wireless capsule endoscopy (WCE) in diagnosing, monitoring, and evaluating gastrointestinal disorders. It utilizes a miniature camera fitted in a wireless capsule that travels through the digestive tract to capture images. Research, design, simulation, testing, and analysis were conducted to enhance the WCE. The findings indicate that a spherical WCE shape and smaller size, high resolution, and frame rate can provide more accurate pictures, prolong battery life, and even reconstruct 3D images, making it more advantageous than commercial capsule-shaped endoscopic devices for wireless applications.
Article
Engineering, Biomedical
Jing Yang, Muhammad Awais, Md. Amzad Hossain, Por Lip Yee, Ma. Haowei, Ibrahim M. Mehedi, A. I. M. Iskanderani
Summary: This paper presents Think2Type, an efficient Brain-Computer Interface (BCI) technology that allows users to translate their intentions into Morse code text using brain signals. It helps individuals with visual inefficiencies or different abilities overcome difficulties in using smartphones and computers and reduces their reliance on others.
BIOMEDICAL SIGNAL PROCESSING AND CONTROL
(2023)
Article
Chemistry, Inorganic & Nuclear
Anjan Kumar, Mohammed Al-Bahrani, Md. Amzad Hossain, Ibrahim M. Mehedi, Ahmed I. M. Iskanderani, Juan Carlos Orosco Gavilan, Gurumurthy B. Ramaiah
Summary: C70 fullerenes are effective sensors and adsorbents for formaldehyde, and their sensitivity can be enhanced by nitrogen or boron doping. Nitrogen-doped C70 fullerenes are effective in removing formaldehyde from the air. In this study, the potential of transition metal-functionalized porphyrin C70 fullerenes (MF-PC70Fs) for sensing and removing formaldehyde was investigated. The HOMO-LUMO gaps and absorption energies of MF-PC70Fs were computed, and it was found that Ti-functionalized PC70Fs had the highest adsorption strength, while Ni-functionalized PC70Fs had the lowest. Cr-, Fe-, and Zn-functionalized PC70Fs showed potential for formaldehyde sensing, with Fe- and Zn-functionalized materials being more favorable.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Mathematics, Applied
Abdul Latif, Ibrahim M. Mehedi, Mahendiran T. Vellingiri, Rahtul Jannat Meem, Thangam Palaniswamy
Summary: This article introduces an enhanced remora optimization algorithm with stacked bidirectional long short-term memory (EROA-SBiLSTM) approach for accurate temperature prediction of permanent magnet synchronous machine (PMSM) drives. The presented technique utilizes artificial intelligence and deep learning methods to achieve effective temperature prediction by analyzing correlations and optimizing parameters. Experimental results on electric motor temperature dataset verify the effectiveness of the proposed EROA-SBiLSTM technique.
Article
Materials Science, Multidisciplinary
Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Yajiang Chen, Ai-Xi Chen, Xiaobing Luo
Summary: This work demonstrates how the current phase transition of atomic Bose-Einstein condensates in a trap can be controlled by applying an oscillatory driving field. The self-trapping effect in momentum space allows for a suppression of oscillations and a nearly constant directed current. Mean-field chaos serves as an indicator of the quantum phase transition. These findings are supported by an effective three-mode model.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinqin Ye, Yi Li, Jun Ding, Heng Yu, Xianqi Dai
Summary: Constructing van der Waals heterostructures is an efficient approach to enhance the properties and broaden the applications of two-dimensional materials. This study explores the structure, stability, electronic, and optical properties of BlueP/MoSSe heterostructures using density functional theory calculations. It is found that the bandgap and band edge of these heterostructures can be effectively modulated by strain and electric field.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Simone Anzellini, Silvia Boccato, Samuel R. Baty, Leonid Burakovsky, Daniele Antonangeli, Daniel Errandonea, Raffaella Torchio
Summary: The melting line of cobalt was investigated through experimental and theoretical methods, revealing a phase transition from hexagonal close-packed structure to face-centered cubic structure at high temperatures. The melting temperatures obtained from both methods showed good agreement and can be described by a Simon-Glatzel equation. Additionally, a thermal equation of state for the face-centered cubic phase of cobalt was determined.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jiajuan Qing, Shisheng Zhou, Jimei Wu, Mingyue Shao
Summary: This paper investigates the nonlinear chaotic vibrations of fractional viscoelastic PET membranes subjected to combined harmonic and variable axial loads. The viscoelasticity of PET membrane is characterized by the fractional Kelvin-Voigt model. The reliability of the numerical strategy is proved by comparing the results with available fractional systems and examples. The influence of system parameters on chaotic behaviors is described using bifurcation diagrams and detailed responses. This research provides a fundamental framework for controlling viscoelastic substrates in flexible manufacturing.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aly R. Seadawy, Syed T. R. Rizvi, Bazgha Mustafa, Kashif Ali
Summary: In this research, the complete discriminant system of polynomial method is used to analyze the dynamic characteristics of the cubic-quintic nonlinear Schrodinger equation with an additional anti-cubic nonlinear term, with a focus on the introduction of various optical solitons and wave structures. The analysis illustrates the importance of the polynomial method and provides dynamic results for the solutions.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Ruihang Huang
Summary: This study utilized bibliometric analysis to examine the development of multi-scale calculation of carbon nanotubes. Using CiteSpace III software, 1253 relevant articles from the SCI Expanded database were analyzed to identify research trends in this field. The findings revealed significant progress in the research of multi-scale calculation of carbon nanotubes from 1999 to 2023. The analysis of keywords, literature co-citation network, and keyword cluster network provided valuable insights into the knowledge base, important research results, and research hotspots in this field. Additionally, the study predicted future hot research directions using keyword breakout analysis. The research provides profound insights and important guidance for researchers and policymakers in the field of multi-scale calculation of carbon nanotubes to promote further innovation and development.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xiaohua Zhou, Erhu Zhang, Shumin Zhao, Lei Zhang
Summary: A theoretic model is proposed to study the adhesion behavior of a vesicle adhering inside another vesicle in 2-D case. The model investigates the equilibrium shape equations and boundary conditions, and reveals the phase diagram and critical adhesion condition in different situations.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xin Yi, Jia-Cheng Huo, Yong-Pan Gao, Ling Fan, Ru Zhang, Cong Cao
Summary: The paper introduces an iterative quantum algorithm based on quantum gradient descent to solve combinatorial optimization problems, verifying the effectiveness and robustness of the algorithm through numerical simulations and comparison with other algorithms. Experimental results on a real quantum computer also demonstrate the feasibility and performance of the algorithm.
RESULTS IN PHYSICS
(2024)
