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570 articles for “micro structure”
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Sustainable Carbon Materials for Catalysis, Energy Conversion, and Environmental Remediation
Abstract: Among the most ancient and adaptable materials used by humans, carbon finds use in a wide range of industries, including electronics, energy production, medicine, water purification, air filtration, and catalysis. Among them, activated carbon's highly developed microporous structure, remarkably large specific surface area, and adjustable surface functions have drawn a great deal of attention from both science and industry. Activated carbon materials have been widely used as molecular sieves, adsorbents …
Published in Emerging Trends in Chemical Engineering · Vol. 13, Issue 2, 2026 · pp. 47–52 Read article
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Synthesis, Characterization of Mesoporous Zeolite BEA and Its Application in Multicomponent Reactions
Abstract: Strongly acidic mesoporous zeolite beta (MZB or Beta/MCM-41composite) with bimodal pore structure and stepwise distributed acidity has been synthesized by novel route using zeolite BEA as silica-alumina source. The material was characterized by various techniques. Powder XRD showed the existence of well-structured microphase zeolite Beta and mesophase MCM-41 in the composite materials. The performance of the composite material as a catalyst was investigated for the synthesis of various biologically active …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 3, 2014 · pp. 25–45 Read article
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Design and Analysis of a Low Loss Polarization Maintaining Waveguide for Transmission of THz Waves
Abstract: AbstractThis paper presents the design of a novel porous core kagome lattice photonic crystal fiber (PCF) which acts as a low loss and polarization maintaining teraheartz (THz) waveguide. Using finite element method (FEM), properties of the proposed PCF are simulated in details including the effective material loss (EML), confinement loss, single mode propagation. Cyclic olefin copolymer, also known as TOPAS material have been chosen for the air micro structured inhibited …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 13–22 Read article
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Influence of Die Design Parameters and Mechanical Properties of AA5083 Through Equal Channel Angular Pressing Technique
Abstract: Refinement of the grain structure in bulk Materials is achieved using the Equal Channel Angular Pressing process. The material is pass through a die in this procedure that has two channels that meet at a particular angle. Finer grains are formed as a result of the material's deformation when it passes through die. The creation of ultra-fine grains is influenced by a number of die design characteristics. The effects of …
Published in International Journal of Manufacturing and Production Engineering · Vol. 2, Issue 2, 2024 · pp. 33–47 Read article
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An Overview of Elliptical Low Pass Filter by using Defected Ground Structure Method
Abstract: Calculation and differentiation of the response of elliptical low pass filter (LPF) with and without using defected ground structure (DGS) was done. In the present work, return loss, bandwidth and gain have been evaluated. All the designs are printed on the FR4 lossy substrate of dielectric constant ( ) of 4.3, substrate thickness of 1.6 mm and loss tangent of 0.02. Moreover, the effect of controlling parameters namely slots and …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 2, 2017 · pp. 13–16 Read article
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Punjab’s Wetlands as Inland Analogues of Marine Ecosystems: Status, Stressors and CommunityLed Conservation.
Abstract: Aquatic and wetland ecosystems in Punjab, India, represent ecologically significant yet increasingly degraded socioecological systems embedded within an intensively managed agrarian landscape. Despite their recognised importance, existing studies largely treat these systems using conventional freshwater ecological frameworks, with limited integration of microbiologically mediated processes and broader ecosystem theories. A key research gap, therefore, lies in the lack of interdisciplinary approaches that can holistically interpret wetland structure, function, and governance across …
Published in International Journal of Marine Life · Vol. 3, Issue 1, 2026 · pp. 31–51 Read article
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Design and Analysis of Microstrip Band Reject Filter with Modified Rectangular and Hexagonal Shape Ground Structure
Abstract: In this proposed paper, the performance of band stop filter with modified ground structure is examined; the modified ground structure includes four rectangular and a hexagonal etched shapes in ground plane. Parameters of the proposed design were calculated at the cut off frequencies of f1=1.16 GHz, f2=1.89 GHz and also proposed designs having substrate height of 1.6 mm, loss tangent of 0.02 and dielectric constant of 4.4. Results are calculated …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 2, 2017 · pp. 1–5 Read article
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Design and Analysis of Microstrip Band Stop Filter with Modified Circle and Dumbbell Shape Ground Structure
Abstract: In this proposed paper the performance of Band stop filter with modified ground structure is analyzed in this specific work; the modified ground structure includes a circle and dumbbell etched shapes in ground plane. Parameters of the proposed configuration were calculated at the cut off frequencies of f1=1 GHz, f2=1.62GHz and also proposed designs having substrate height of 1.6 mm, loss tangent of 0.02 and dielectric constant of 4.4. Results …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 26–31 Read article
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Gain Enhanced 2.4 GHz Slotted Rectangular Microstrip Patch Antenna with FR-4 Epoxy Substrate
Abstract: Applications that use the Internet of Things (IoT) must be combined with wireless networking technologies. This makes it easy to get to the application data. The wireless communication system is a key part of the infrastructure for the Internet of Things. It acts as a bridge for two-way connections to gather data and send control messages. In this work, HFSS software is used to create a rectangular microstrip patch antenna …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 1, 2023 · pp. 20–26 Read article
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Multi-Sensor System for Underwater Pothole Detection to Enhance Road Safety During Monsoon Seasons
Abstract: Monsoon seasons across India and similar tropical regions severely compromise road safety by causing water accumulation that conceals dangerous potholes beneath stagnant pools, leading to frequent vehicle damage, tire punctures, and fatal accidents. Traditional detection methods relying on smartphone accelerometers, ultrasonic sensors, or machine vision fail under flooded conditions due to acoustic signal reflection at water surfaces and optical distortions from glare and turbidity. This research proposes an innovative multi-sensor …
Published in International Journal of Mechanical Dynamics and Systems Analysis · Vol. 4, Issue 1, 2026 · pp. 25–32 Read article
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Analysis of Thermally Actuated Micromirrors
Abstract: Use of microelectromechanical system (MEMS) to craft deformable mirror is in the embryonic stage. However, MEMS micromirrors hold significant advantages in speed, compactness, and economy in comparison to macroscale counterparts. The MEMS micromirrors are fabricated by silicon batch processing or micrometer scale lithographic pattering technique which offer flexibility in low volume manufacturing and inter batch variations. The project is a structural study and involves the modeling of various geometries for …
Published in Journal of Mechatronics and Automation · Vol. 6, Issue 3, 2019 · pp. 17–23 Read article
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Evaluating Fiber Volume Fraction and Defects in Fiber Reinforced Polymer Composites for T Joint applications
Abstract: Fiber-reinforced polymer (FRP) composites have been integral to industries such as aviation, aerospace, shipbuilding, and automotive due to their strength, durability, lightweight, and corrosion resistance. This study examines the production and microstructural analysis of polymer composites using FRP and manual lamination methods. While manual lamination is quick and economical, it relies on operator skill, resulting in low mechanical properties. Microstructure analysis via 3D optical and scanning electron microscopes revealed that …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1222–1235 Read article
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Design Optimization of Microstrip Antenna with EBG and DGS Using the Genetic Algorithm to Reduce the Mutual Coupling
Abstract: The purpose of this paper is to construct, create, and reproduction of different antenna structures using electromagnetic band gap (EBG) materials and defected ground structures (DGS). Microstrip antennas are processed in order to improve performance by changing the shape of the geometry of the antenna, in particular to reduce the mutual coupling between the elements. The propagation of electromagnetic waves in a specified frequency range have the unique ability to …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 1, 2016 · pp. 11–30 Read article
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Nutrition Induced Gut Microbiota Modulation in Food Animals: Implications for Viral Susceptibility, Shedding and Transmission Dynamics for Sustainable Development
Abstract: The gut microbiota has emerged as a central mediator linking host nutrition, immune competence, and vulnerability to viral pathogens in food animals. Diet is a primary driver of microbial community structure and function, influencing metabolite production, intestinal barrier integrity, and systemic antiviral immunity. Accumulating evidence indicates that nutrition induced modulation of the gut microbiota can substantially alter viral susceptibility, replication, and shedding patterns, with downstream effects on transmission dynamics within …
Published in International Journal of Virus Studies · Vol. 3, Issue 1, 2026 · pp. 46–56 Read article
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Forage Bioactive Compounds and Rumen Microbiota: Exploring Colonization, Density, and Diversity Dynamics in Dairy Cows
Abstract: The rumen microbiota plays a pivotal role in the health, productivity, and sustainability of dairy cows, with forage serving as a fundamental dietary component influencing microbial dynamics. This review explores the intricate interactions between forage bioactive compounds – such as tannins, saponins, alkaloids, and flavonoids – and the rumen microbiota, focusing on their effects on colonization, microbial density, and diversity. Forage bioactives modulate microbial adhesion, biofilm formation, and growth patterns, …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 15, Issue 3, 2025 · pp. 15–26 Read article
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Fibre Orientation and Void Distribution Analysis in Polymer Composite Structures Using Image Processing
Abstract: Fibre orientation and void distribution are critical microstructural features that govern the mechanical performance and reliability of polymer composite materials. Accurate and simultaneous characterisation of these features remains challenging due to their complex spatial interactions and dependence on processing conditions. In this work, an integrated image-processing framework is proposed for the quantitative analysis of fiber orientation and void distribution in polymer composite structures. High-resolution composite microstructure images are processed through …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 925–933 Read article
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Roll-off Improvement of Open-circuited Stub Bandstop Filter
Abstract: This paper presents an alternative implementation of a shunt open-circuited stub bandstop filter for microwave circuit. By making use of the proposed implementation, a simple and compact bandstop filter with distinct bandstop characteristics is designed at 1.25 cutoff frequency and FBW of 1.2. This paper also focuses on how to increase the roll-off of bandstop filter by increasing the number of the shunt stub. A shunt open-circuited stub is the …
Published in Journal of Electronic Design Technology · Vol. 4, Issue 1, 2013 · pp. 19–25 Read article
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A comprehensive study on elemental analysis and sustainable integration of CETP (common effluent treatment plant) sludge as a substitute to sand in concrete
Abstract: This study examines the utilization of sludge from common effluent treatment plants (CETP) as a fractional substitute for sand in M20 concrete mixtures. Its aim is to address disposal challenges associated with CETP sludge while promoting sustainable use of natural resources. The research assesses the structural and microstructural attributes of concrete mixes containing varying percentages of CETP sludge (0%, 10%, 20%, 30%, 40%, and 50%). Tests conducted include compressive, flexural, …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 49–59 Read article
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Structure–Optical Property Correlation of Co-Doped TiO₂ and ZnO Nanofillers for Advanced Functional Composite Applications
Abstract: This study investigates the enhancement of the structural and optical properties of titanium dioxide (TiO₂) and zinc oxide (ZnO) nanoparticles through cobalt (Co) doping. Pristine TiO₂ and ZnO are widely studied metal oxides; however, their large band gaps and limited visible-light absorption restrict their performance in optoelectronic, photocatalytic, and environmental applications. Co doping is employed as an effective strategy to overcome these limitations by inducing band-gap narrowing, creating defect-related electronic …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1374–1394 Read article
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Evaluation of T-stress using FEM in an Unsymmetrical Cracks Emanating from a Hole Placed Centrally in a Thin Plate
Abstract: Studying the impact of higher order terms of the William’s series expansion on fracture mechanics problems has received more attention in recent years. Research has demonstrated that the constant term T-stress has a significant impact on the stress and strain fields around the crack tip. In response to mixed mode (I/II) loading, a number of fracture criteria had been developed to characterize failure in linear elastic bodies. When evaluating the …
Published in Journal of Materials & Metallurgical Engineering · Vol. 14, Issue 2, 2024 · pp. 09–20 Read article