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125 articles for “light absorption”
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Crash and Vibrational Analysis of Car Body
Abstract: This paper describes about the relevance of the crash analysis required for the safety of the automobile during the time of the crash. During the crash of an automobile, some parts in the front of an automobile body will have plastic deformation and absorb a lot of energy. Hence, it is necessary to check the car structure for its crash ability so that safety is achieved together with fuel economy. …
Published in Trends in Mechanical Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 26–35 Read article
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Fabrication of Paper Bricks from Paper Waste and Cement
Abstract: Paper bricks are key construction materials for buildings in general and for low cost housing in particular. To keep up with sustainable development movements and increasing competitive pressure in the industry, building materials of the future have to be of lighter weight, more energy efficient and lower cost. The use of recycled materials is also critical for long-term sustainability. The objective of this study is to develop lightweight paper brick …
Published in Recent Trends in Civil Engineering & Technology · Vol. 4, Issue 2, 2014 · pp. 7–11 Read article
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Light-Matter Interactions in Molecular Photochemistry
Abstract: Molecular photochemistry explores the ways of molecules interaction with light, absorb photons, and excited‐state processes, and ultimately conversion of photon energy into chemical change. Core concepts of this innovative and relevant field are matter interaction like electronic, vibrational, and rotational transitions; non‐adiabatic couplings; energy & electron transfer; and light–matter coupling in weak and strong regimes. This article briefly surveys the multiplicity of these interactions, from the fundamentals of photon absorption …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 3, Issue 2, 2025 · pp. 33–42 Read article
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Study of Adsorption of Nickel on Soil in Rural Area of Hadoti Region: An Ethical Approach to Reduce Soil Pollution
Abstract: Nickel (Ni), one of the toxic heavy metals, is widely distributed in soil and aquatic ecosystems. The chemical nature of the soil has a significant impact on the environment. The adsorption reaction of nickel in alkaline soils is the main topic of this research. The removal of Ni (II) from aqueous solutions uses soil as an adsorbent. Batch adsorption studies were used to study the effects of various factors, including …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 1, 2023 · pp. 25–30 Read article
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Tuning the physical properties of spray pyrolysed nanocrystalline CdO thin films by varying the substrate temperature
Abstract: Spray pyrolysis technique has been employed to deposit cadmium oxide (CdO) thin films on glass substrates preheated to different temperatures (250, 350, 400 and 500°C). Structural, morphological, optical and electrical characterization studies were performed on the films to study the behavior of the films. The thicknesses of the films prepared at different substrate temperatures vary from 497 to 465 nm. X-ray diffraction analysis reveals that the films are polycrystalline exhibiting …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 1, 2020 · pp. 31–41 Read article
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Simulation of Electric Field Induced by Electromagnetic Radiation on Spherical Nanoparticles
Abstract: AbstractIn this article, the interaction of light and matter of nanoparticles is simulated for the electric field induced by electromagnetic radiation on spherical nanoparticles. The absorption, scattering and extinction efficiencies are demonstrated for initial wavelength of the incident of light from 300 nm to the final wavelength at 900 nm range for the silver material of 250 nm (spherical nanoparticles) radius with 1.0 refractive index. These optical properties vary according …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 20–24 Read article
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Study of the CuS/CdSe Quantum Dots on the Optical Properties of Green Synthesis
Abstract: Chalcogenides based nanomaterials, such as CdSe are emerging as an important material offering transformative potential across multiple domains, such as photocatalysis, optoelectronics, sensing, and photo luminesce. In this study we synthesised CuS/CdSe quantum dots by varying CuS concentration through plant mediated green method. The copper sulfide synthesized at varying concentrations of the Se source, exhibited bonding configuration that are comparable to those of the Cd source. The goal of this …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 176–184 Read article
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Innovations and Comparative Analyses in Foam Concrete: A Review of Emerging Techniques and Materials
Abstract: Foam concrete, recognized for its lightweight and eco-friendly properties, is gaining prominence as a sustainable construction material. However, challenges such as low mechanical strength, performance variability, and limited environmental resistance have prompted significant innovations in recent years. This study synthesizes findings from three key studies focused on enhancing foam concrete’s performance through nanomaterials, natural fibers, and alternative lightweight aggregates. The incorporation of nano-silica and nano-calcium carbonate into coal gangue foam …
Published in Trends in Transport Engineering and Applications · Vol. 12, Issue 3, 2025 Read article
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Optimized Receivers for Underwater Visible Light Communication
Abstract: For uses like ocean exploration, environmental monitoring, and underwater data transfer, wireless communication under water is crucial. Conventional acoustic and radio frequency communication methods suffer from low bandwidth, high latency, and severe signal attenuation in underwater environments. With its high data rate and low propagation delay, Visible Light Communication (VLC) provides a promising alternative. In this work, an underwater VLC system is implemented using Light Emitting Diodes (LEDs) with intensity …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 1, 2026 · pp. 22–33 Read article
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Paper Waste for Bricks Production Evaluation of Paper Waste as An Alternative Aggregate in Bricks Production
Abstract: This study focused on the use of paper waste to partially replace ordinary Portland cement for producing a new lightweight concrete, otherwise called papercrete. The objective was to evaluate its effect on some hardened properties of papercrete. A laboratory experiment was conducted where paper waste was added in varying proportions of 20%, 30% and 40% as partial replacement for cement. After combining with sand, cement and water, the mixture was …
Published in Recent Trends in Civil Engineering & Technology · Vol. 12, Issue 1, 2022 · pp. 29–39 Read article
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Behavior of Surface Polaritons on Cylindrical Semiconducting Materials at Nanoscale with Radius Dependence Frequency
Abstract: Surface plasmon resonance (SPR) is a physical property of the surface to investigate the important properties of optical behaviors for nanomaterial and biomaterial. It involves the excitation of electrons within a thin metal sheet by incident light at a specific angle, prompting them to propagate parallel to the surface. This sensitivity to external factors, such as changes in the refractive index of the surrounding medium due to molecular adsorption, underscores …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 2, 2024 · pp. 1–7 Read article
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Review on Replacement of Coarse Aggregate with Palm Kernel Shells: An Environmentally Sustainable Approach
Abstract: The palm shell, extracted from fruit seed can be categorized as a natural lightweight aggregate. To prepare the lightweight aggregates the mass compactness is between 1450 kg m−3 to 1750 kg m−3, which restricted it as low-density concrete. As the curing period of concrete progresses, there is a rise in the strength recognized the strength in the compression results of the cementitious material in 90 days of testing. Referring to …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 2, 2023 · pp. 1–6 Read article
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Modern Physics Approaches to Light-Matter Interaction
Abstract: Light-matter interaction is crucial to numerous fundamental and applied phenomena in contemporary physics, encompassing quantum optics and materials science. This study examines modern methods for comprehending and controlling the interaction between electromagnetic radiation and matter, focusing on both theoretical frameworks and experimental progress. The interaction between light and matter is a fundamental aspect of contemporary physics, forming the basis for phenomena that include the essential principles of vision and photosynthesis, …
Published in Research & Reviews : Journal of Physics · Vol. 14, Issue 3, 2025 · pp. 10–19 Read article
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The Evaluation of the Light Parameters and Pleural Fluid Cholesterol to Determine the Differences Between Exudative and Transudative Pleural Discharge
Abstract: Background: Pleural effusion occurs when an imbalance between pleural fluid production and absorption leads to the accumulation of excess fluid in the pleural cavity. Pleural effusions are commonly classified into two types: transudative or exudative, depending on the underlying mechanism of fluid formation. While transudates typically result from systemic factors like heart failure or liver cirrhosis, exudates are usually caused by local factors such as infection, malignancy, or inflammation. Differentiating …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 14, Issue 3, 2024 · pp. 30–35 Read article
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Using Machine Learning to Guess Photochemical Reaction Pathways
Abstract: Photochemical reactions are crucial to many activities in the fields of energy conversion, environmental cleanup, and synthetic chemistry. However, predicting their causes and results effectively is still very hard since they entail excited electronic states, nonadiabatic transitions, and complicated potential energy surfaces. Machine learning (ML) has been a powerful technique to go along with classic quantum chemistry methods in the last few years. It offers better prediction capability and lower …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 3, Issue 2, 2025 · pp. 01–12 Read article
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Hydrothermal modification of carbon fiber fabrics by ZnO nanorods for mechanical strengthening of CFRP laminates
Abstract: Hexagonal ZnO nanorods were produced on plain woven carbon fiber using a two-step seed-assisted hydrothermal procedure. By varying the process parameters such as molar concentrations, number of seeding cycles, and growth duration at a controlled growth temperature of 90 °C, it is feasible to produce ZnO nanostructures with a range of morphologies, including nanowires, hexagonal nanorods, and nanoflowers. The developed morphologies were examined using field emission scanning electron microscopy and …
Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 127–139 Read article
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Bio-Derived TPS–Lignin Hybrid Composites Reinforced with Modified Coir and Plantain Fibers for Eco-Efficient Structural Applications
Abstract: This study develops bio-derived polymer composites using a thermoplastic starch–lignin (TPS–lignin) matrix reinforced with alkali-treated coir and plantain fibers for sustainable load-bearing applications. The TPS–lignin matrix was formulated using cassava starch, glycerol, and 10 wt% lignin, while coir and plantain fibers were surface-modified using 5 wt% NaOH to enhance interfacial compatibility. Composite laminates were fabricated with varying fiber loadings (10–40 wt%) through melt-mixing and hot-press compression. Tensile, thermal, morphological, and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 136–145 Read article
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Pulse Oximeter using PSoC
Abstract: A pulse oximeter to measure the oxygen saturation in blood as well as heart rate was developed using PSoC. The method proposed here is to transmit light of two different wavelengths through the finger and tissues and to measure the change in absorption intensities. The signals are obtained as photoplethysmograph (PPG) waveforms. The pulse oximeter finds the variations in both the waveforms and calculates the SpO2 and heart rate of …
Published in Journal of Instrumentation Technology & Innovations · Vol. 3, Issue 1, 2013 · pp. 14–17 Read article
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A Study of Carbon Nanotubes in Photovoltaic Devices
Abstract: AbstractArrays of periodic one-dimensional nano materials provide light–matter interaction in terms of tunable optical properties which are attractive for planning efficient optoelectronic devices. This paper is based on n-i-p thin-film amorphous silicon utilizes scaffolds of vertically aligned carbon nanotube (CNT) array for a fabrication of bottom-up grown Nano pillar (NP) array solar cells. The varying effect of the CNT extent over a wide range from 800 to 2000 nm on …
Published in Trends in Opto-electro & Optical Communication · Vol. 10, Issue 1, 2020 · pp. 1–13 Read article
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Optical and Photocatalytic Activity Of Cmc Capped Zinc Selenide Nanoparticles Under UV Light Irradiation Using Congo Red Dye
Abstract: In this work, we report the, optical, structural morphology and photocatalytic activity of CMC capped zinc selenide nanoparticles, which have been synthesized by hydrothermal method. CMC is acted as capping agent. The nanoparticles were characterized using XRD, SEM with EDAX, AFM, TEM and UV-Vis absorption spectroscopy. The structural properties of nanoparticles have been characterized by X-ray diffraction (XRD) analysis. The XRD patterns show a hexagonal Wurtzite crystal structure. The surface …
Published in Journal of Catalyst & Catalysis · Vol. 6, Issue 3, 2019 · pp. 25–35 Read article