bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance Comparison of Variants Based on Swarm Intelligence Algorithm of Mathematical and Structural Optimization
Authors: Tran Van Phuc , Huynh Van Thu , Tangaramvong Sawekchai 
Published: February 2022

Abstract
In this paper, three different variants of the canonical particle swarm optimization (PSO) algorithm are compared in terms of their optimal solutions to engineering optimization problems. The PSO often face to premature convergence due to its weak capability in local exploitation, which leads to a low optimization precision or even failure. Moreover, the computational burden is also one of the obstacles for the PSO when solving complex problems. To overcome these drawbacks, the original PSO algorithm is integrated with the knowledge sharing and auxiliary mechanisms of comprehensive learning (CL) and Gaussian local search (GLS) strategies to form the so-called GLS-PSO, CLPSO, and GLS-CLPSO algorithms. To demonstrate the accuracy and robustness of the three variants, their performance is tested on a benchmark spatial truss structure with continuous variables. The obtained optimization results are then compared with those by other PSO variants in the literature.
Fabrication and characterization of e-glass composites cylindrical tubes using three different methods
Authors: Ganesh Kumar K. , Lau Z.L. , Megat Ahmad M.M.H. , Yuhazri M Y 
Published: February 2022

Abstract
The mechanical properties of the composites might have variations due to their manufacturing methods. In this paper, the glass fiber reinforced epoxy composite tubes are fabricated by using three different methods which are hands lay-up, vacuum bagging, and compression molding. The tensile properties such as the tensile strength, Young modulus, and the tensile response of thermal spiking were determined by carrying out the tensile testing. The test was conducted according to ASTM D3039 standard. The specimens were undergone heat treatment with 50°C, 100°C, and 150°C before undergoing the test. All the results were compared with the untreated specimen at room temperature. The untreated compression molding fabricated composite has obtained the highest tensile strength with a value of 273.518 MPa. The tensile strength of all types of specimens starts to reduce when the treatment temperature reaches to 150°C. The performance in terms of the specimen’s tensile properties shows that the compression molding method is the best approach.
A review on transition metal oxides based nanocomposites, their synthesis techniques, different morphologies and potential applications
Authors: Yadav S , Rani N , Saini K 
Published: February 2022

Abstract
In the field of nanotechnology and nanoscience, transition metal oxides based nanocomposites (TMONCs) are promising for various application uses such as Supercapacitors, Sensors, Bactericidal properties, Photocatalytic Degradation, Solar Cells etc. Modification of transition metal oxide nanoparticles (TMONPs) to TMONCs by doping/mixing of another transition metal and metal oxide, carbon based nanoparticles, conducting polymers etc. to achieve enhanced surface area, increasing surface activities or number of active surface sites, reducing electron-hole recombination, increasing charge transfer processes etc. have been reported in literature. These improved properties are the possible reason for the enhancement in its practical applications efficiencies. This review summarizes recent development on transition metal oxides based nanocomposites for different potential applications. Also synthesis methods of transition metal oxide based nanocomposites have obtained an increasing attractions to achieve cost effectiveness and environment friendly routes of synthesis with high rate of production, high yield of product and also less toxic waste production. Transition metal oxides nanocomposites have been fabricated by various methods such as Microwave assisted synthesis technique, Sol-Gel method, Biosynthesis method, Co-precipitation process, Simple Chemical method etc. Different morphologies of transition metal oxides based nanocomposites have been summarized in this review article.
Herein, this paper discuss about several reported synthesis techniques, various characterization techniques used for structural and surface properties identifications, different morphologies and various potential applications of transition metal oxide based nanocomposites.
Flexural and shear strength properties of unidirectional carbon fiber reinforced polymer composite interleaved with recycled carbon fiber and short virgin aramid fiber non-woven mats
Authors: Attahu C Y , Yang J , Wong KH , Thein C K 
Published: February 2022

Abstract
Carbon fiber reinforced polymer composites (CFRPs) are one of the most widely used composite types and wastes associated with them (CFRPs) get generated through either their manufacturing or end-of-service-life. Predominately due to environmental concerns and governmental regulations, recycling these CFRPs is needed and to make use of the recycled carbon fibers (rCFs), a wet paper-making technique was used to convert the rCFs into a 60 g/m2non-woven mat. For comparison purposes, the same technique was used to convert short virgin aramid fibers (vAFs) into a 60 g/m 2 non-woven mat. Each mat was sandwiched with two resin films and then interleaved with 12-ply unidirectional (UD) prepreg tapes (carbon/epoxy). The assemblage was molded into composite laminates using a vacuum bagging assisted compression molding technique, and the samples for the tests were cut using a waterjet machine accordingly. Compared with the control, the results indicate an increment in the flexural modulus, and the specific flexural modulus for the CFRPs with non-woven mats: the flexural modulus increased by approximately 8.2% and 12.0% for the CFRP with rCF and vAF mats, respectively; the specific flexural modulus increased around 9.5% and 13.3%, respectively for the CFRP with rCF and vAF mats. On the other hand, the shear strength approximately decreased by 6.4% and 6.0% for the CFRP with rCF and vAF mats, respectively. The negative shear strength performances of the composite laminates with non-woven mats reflected on their flexural strength performances: the flexural strength increased about 1.1% and decreased by approximately 7.9% for the CFRP with vAF and rCF mats, respectively. To resolve the negative shear strength performances, it is recommended that the surfaces of the mats be treated with a coupling agent to improve their interfacial adhesions.
Performance optimization of operating parameters: Al 6061-Red Mud composite under sliding wear
Authors: Panwar N , Bala S , Chauhan A 
Published: February 2022

Abstract
Aluminium 6061-red mud composite has been fabricated by using stir casting method. Uniform distribution of red-mud particles has been observed by Scanning electron microscopy. Energy dispersive spectroscopy confirms presence of constituent elements of red mud. Wear testing of samples has been done on pin-on-disk type wear tester. The weight loss due to wear first decrease then increase with increasing percentage reinforcement. From experimentation, authors have found that the weight loss first decreases and then increase with aging time. Also, weight loss increases with applied load, sliding speed and sliding distance. In ANOVA analysis, the variables: load and sliding distance are found significant while particle size, aging time, percentage reinforcement and sliding velocity are not found significant. The order of significance is load, sliding distance, percentage reinforcement, sliding speed, aging time and particle size. Optimum value of weight loss is predicted by using Taguchi technique and confirmed by experimentally obtained results.
A fuzzy logic approach for investigating the tribological behavior of polymer composite
Authors: Jagadeesh G V , Teja Rakesh Kumar T , Aneesh T Sai , Dheeraj Srinivas N , Harish V , Ravi Kumar A 
Published: February 2022

Abstract
The application spectrum of natural fiber reinforced polymer composites has been increasing tremendously because of enhanced tribologicalbehavior. The present study investigates the wear and coefficient of friction of castor oil fiber reinforced composites for developing as new tribo-material. Composites with 40 vol.% with short fiber length of 5mm were fabricated by hand lay-up method. The tribology tests were performed with pin on disc tribometer at normal loads (15N, 30N & 45N) and sliding distances (1000m, 2000m & 3000m). A fuzzy logic model has been developed to predict and analyze the wear and friction characteristics at unknown test cases. Each input variable was divided into three linguistic variables and each output variable was divided into five linguistic variables. A triangular membership function was used for defining all the variables. The capabilities of fuzzy logic model were tested by confirmatory experiments. The model predicted the wear results with an error of 3.12% and coefficient of friction by 2.19%.
Investigation of Self-heating Effects in Ultrathin FDSOI MOSFETS
Authors: Kumar Vinod , Rana Ashwani K. 
Published: February 2022

Abstract
This paper contains the design consideration of 18nm FDSOI MOSFET for mitigating the self-heating effects. As the device scaling reaches towards the nano regime, self-heating effects are quite significant. Increase in the lattice temperature will lead to decrease in the mobility and degradation of the drain current. Self-heating effects are investigated in FDSOI MOSFET by comparing different physical parameter variations like gate length, spacer thickness, buried oxide thickness and source/drain/metal contacts. It is being observed that the heat sinks used as metal contacts can reduce lattice temperature up to 62% and spacer size thickness can reduce it by 10%. However the buried oxide box thickness and gate length modifications do not have considerable impact on the self-heating.
MXene based Heterostructures for electrode materials of Batteries: A Review
Authors: Shanto M. A. H. , Chowdhury M.I. , Antu A.B , Niloy Naimur R. , Alam N. , Ullah M.A. , Anowar M.S. 
Published: February 2022

Abstract
Growing concerns about fossil fuel’s environmental impact, along with the recent breakthrough of electric vehicles, have turned research focus to energy storage solutions. Despite the fact that batteries were invented about 200 years ago, modern technologies are required to store energy in a larger grid with a high density. The electrode materials used in energy storage devices such as batteries and supercapacitors play a major role in their overall performance. A lot of materials have been explored but due to appealing electrical and electrochemical properties, MXene has received a lot of interest for energy storage devices. Because of their layered structure and high conductivity, MXenes are promising candidates for energy storage applications. Two-dimensional heterostructured materials are more advantageous than individual building blocks for batteries and supercapacitors. In this review work, we looked at different MXene based heterostructures and their electrochemical performance as electrode materials of batteries. A particular application of MXene in Lithium-ion batteries has been studied. Synthesis and characteristics of MXenes are briefly discussed here. Finally, future prospects and challenges are highlighted.
Exergy modeling and simulation of a horizontal concentric tube heat exchanger
Authors: Upadhyay Ankit , Gour Sankalp , Kumar Ankul , Kumar Deepak , Tiwari Aseem Chandra 
Published: February 2022

Abstract
The present study deals with the exergy modeling and simulation of a horizontal concentric tube heat exchanger. In this context, a fundamental thermodynamics-based exergy model is developed here to predict the irreversibility and entropy generation numberfor various fluid flow arrangements of a concentric tube heat exchanger. To develop the same, a second law of thermodynamics-based approach is utilized. Additionally, a finite volume method-based simulation of the same heat exchanger is also performed using a computer-aided engineering software named ANSYS R15.0. At last, the analytical and simulation results are compared and validated with experimental results, and a good agreement is achieved.
DFT Investigations of BeSnN2 Chalcopyrite Compound for Optoelectronic Applications
Authors: Lathwal Sanjay , Gaur Aditi , Khan Karina , Goyal Sunil Kumar , Soni Amit , Sahariya Jagrati 
Published: February 2022

Abstract
The ternary chalcopyrite compounds are a very renowned category to perform the theoretical investigation in order to find out a proper and apt compound for optoelectronic application. Solar cell is a very interesting field to compensate the energy supplying needs in place of other electricity generating sources. Several semiconductor compounds have been investigated and amongst them we have done a theoretical investigation of pure BeSnN2 using DFT based computational tool i.e. Wien2k. The exchange correlation used for our study is Perdew Burke Ernzerhoff: Generalized Gradient Approximation (PBE-GGA). We have done electronic and optical investigation of the compound using the basic lattice parameters and other essential input parameters. The investigation has offered a bandgap of 1.005 eV which is suitable to quote for the optoelectronic applications. Optical properties like absorption, dielectric tensor (both real and imaginary), refraction and reflection have been investigated.
Effect of Alkyl Substitution to the Active Layer Material for Improved Efficiency in Bilayer Organic Solar Cell
Authors: Rugma S , Devu B , Sreekala C O 
Published: February 2022

Abstract
Organic based thin film solar cells have achieved considerable power conversion efficiency (PCE). As there is a desire to the benefits of on-demand energy production, future world energy consumption will continue to rise. Bilayer organic solar cell has two active layers in between conductive electrodes. Present report, is a simulation study to compare the PCE of bilayer organic solar cells by varying one of its active layer material using General-Purpose Photovoltaic Device Model or GPVDM software. The materials used for active layer are MEH-M3EH-PPV, MEH-DOO-PPV, MEH-PPV and M3EH-PPV based on the degree of alkyl substitutions. Data of absorption spectrum, refractive index spectrum and photoluminescence spectrum are added as input and obtained the simulation results. Values of power conversion efficiencies, fill factor and other photovoltaic parameter values for each bilayer organic solar cell is obtained. Transmittance spectrum, reflectance spectrum, Current density-Voltage plot, variation of charge density and total charge density with applied voltage are attained from the simulation and compared. The results give out effect of side chain alkyl substitution on efficiency of bilayer organic solar cell. MEH-DOO-PPV with longest alkyl side chain substitution has maximum power conversion efficiency. This intuition helps to design suitable bilayer organic solar cell, which has got its relevant applications in the optoelectronics.
Raman Photoluminescence - An Efficient way to distinguish Natural diamonds and Lab Grown diamonds
Authors: Akesh Kumar G. , Prabavathy N. , Biswal Laxmidhar 
Published: February 2022

Abstract
The advancements in Science and Technology introduced Lab grown diamonds (LGDs) that meet with diverse applications. The LGD’s possess similar electrical, optical and mechanical characteristics compared to natural diamonds mined from earth. There is a possibility of LGDs infiltration in the Natural diamond pipeline in the jewellery industry. Hence, it becomes crucial to detect LGDs. The present article illustrates the importance of Raman Photoluminescence over absorption spectroscopy and Fluorescence/Phosphorescence imaging for identification of diamond nature. In the current work, a single Laser source of 532 nm was used to obtain the distinct molecular information of Natural diamonds and Lab Grown diamonds.
Up-conversion and Tunable Up-conversion Emission from Nitrogen Functionalized Graphene Quantum Dots
Authors: Siddique A B , Prasad K L V , Joseph S M , Kishore D , Das B , Mubarak S , Mukhuti K , Ray M 
Published: February 2022

Abstract
In amidst of conflicts of opinion regarding the presence of up-conversion in carbonaceous nanostructure. We have critically and precisely asserted that there is a real up-conversion in the nitrogen functionalized graphene quantum dots (NGQDs), which is found to be its inherent feature and not a measurement artefact. We have demonstrated that NGQDs exhibit real up-conversion in the blue-green region. To define the perspective of the study a variant of GQDs, NGQDs was synthesized using facile, one-pot synthetic methods. We have critically examined the up-conversion emission in NGQDs, interestingly, N-GQDs exhibited very superior optical properties such as high quantum yield of 97%, up-conversion emission at 535 nm and tunable up-conversion that exhibited a red shift of 12 nm. The two-photon excitation process is the governing phenomenon behind the real up-conversion in NGQDs which is suggested by the quadratic dependence of the integrated intensity on excitation power. Up-conversion can enhance the efficiency of the photovoltaic solar cell by even converting infrared region of sunlight to electricity. Moreover, tunable up-conversion open the door for promising applications of NGQDs in tunable fibre lasers, multicolour displays and multiphoton optical data storage.
Focusing of Radially polarized Light Using Gaussian laser beam Near its focal length
Authors: Endale Getu , Mohan Devendra , Yadav Sandeep 
Published: February 2022

Abstract
The Richards-Wolf diffraction model is used to examine focusing of RPGB radially polarized Gaussian beam of low & large numerical aperture. The longitudinally polarized component becomes predominant at high numerical aperture and high radius. Numerical calculations for varied beam characteristics, numerical aperture (NA), and beam radius (θ
0) show the total optical intensity distribution in the focal region. The whole optical intensity distribution in the focal region is illustrated using numerical computations for various beam parameters, numerical aperture (NA), and beam radius (θ
0)The suggested technique appears to produce subwavelength focal spot of o.51λ& significant focal depth of 21λ. Optical trapping, data storage, biomedical imaging, laser cutting, microscopy, and the manipulation of optical traps with high refractive index particles can all benefit from such beams with a small spot size and large focal depth.
Integrating Silicon In Armchair Graphene Nanoribbon For Solar Cell Applications
Authors: Sharma Preetika , Sapra Gaurav 
Published: February 2022

Abstract
Solar power is not only free but also infinite and use of solar energy indeed has many advantages. Thus, solar technologies are greatly studied for producing low cost and better versions of existing devices that can be integrated in the existing photovoltaic (PV) systems. Many such devices like the solar powered curtains and clothes, cases for laptop and other electronic products are being produced. Silicon today is of course being used rapidly as a PV material for solar cell. However, a continuous effort has been made to use graphene for high efficiency solar cell applications and its use. Graphene on the other hand, is not very good at collecting the electrical current produced inside the solar cell but researchers are looking appropriately on this material. Many ways to modify graphene for this purpose are being studied. Solar cell requires semiconductor materials for exhibiting photovoltaic effect. As graphene is zero band gap material, hence, armchair graphene nanoribbons (AGNR) that are semiconducting are being looked up for solar cell applications. Therefore, in this present work, various attempts have been made to investigate the electronic bandgap by using AGNRs in solar cells. The in-depth analysis of electronic properties has been done where band structure, density of states and geometrical stability on the basis of transmission of energy has been examined. Further, AGNR doping with silicon has been performed in which we have replaced the carbon with silicon. Initially, we started with one-silicon atom as a dopant and then went upto 4 silicon as dopant and the variations has been compared. Thus, through this analysis, the use of doped AGNRs in solar cells is investigated.
FEA simulations of Lower Limb Prosthetics
Authors: Singh Jashan Jyot , Mehta Jaswinder Singh , Kumar Rajesh , Sapra Gaurav 
Published: February 2022

Abstract
Finite element analysis (FEA) is used to study the characteristics of various objects in different working condition for imitating real life like scenarios. The present work describes an overview of FEM simulations for lower limb prosthetics. The review will give a deep insight for stress interface and load distribution on the residual limb. It enables prosthetists to design the socket for effective functional performance. The study suggests that outcomes through FEA simulations under test conditions is needed It has been observed that predicted outcomes using FEA were in agreement with the experimental measurements. Further, the study suggests that outcomes of the FEA analysis under test conditions may be validated through GAIT cycle.
Wearable Human Motion Monitoring Using Vertical Contact Separation Mode Triboelectric Nanogenerator
Authors: Kaur Akshpreet , Gupta Ankur , Ying Cuifeng , Rahmani Mohsen , Sapra Gaurav 
Published: February 2022

Abstract
Wearable human motion monitoringhas become an integral part of the paradigm shift that is on the horizon in the field of healthcare for a wide variety of biomedical applications. In recent years, there has been incessant advancement in smart wearable technology capable of human motion monitoring ranging from strain sensors to piezoelectrics. This paper proposes to fabricate a Triboelectric Nanogenerator based on Vertical Contact Separation (VCS) mode with design characteristics offlexibility, low cost, simple and easy to fabricate design for real - time monitoring of human body movements. The output performance of fabricated VCS - TENG is analysed by finger tapping. In order to conduct human motion monitoring, VCS - TENG is affixed on different body parts, and the corresponding signal is analysed. The developed prototype can be further integrated with advanced electronics to deliver promising technology in the field of healthcare diagnostics and monitoring.