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Journal articles on the topic 'Nano-micro chemical reactors'

Author: Grafiati

Published: 24 April 2022

Last updated: 18 July 2025

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1

Gongora-Rubio, Mario Ricardo, Juliana de Novais Schianti, Houari Cobas Gomez, and Andre da Costa Teves. "LTCC-3D Coaxial Flow Focusing Microfluidic Reactor for Micro and Nanoparticle Fabrication and Production Scale-Out." Journal of Microelectronics and Electronic Packaging 10, no. 3 (2013): 102–8. http://dx.doi.org/10.4071/imaps.383.

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Miniaturization of chemical processes is becoming a must for green chemistry and sustainable industry processes, so technological research in this direction is well received. Continuous microreactor systems hold many potential benefits over batch reactors, in that they allow: high surface-to-volume ratio, fine adjustment of chemical reaction residence times, small thermal inertia, and fast changes in temperature. Advantages of multilayer green ceramics for microprocess applications include: that the LTCC substrate is chemically inert to most solvents, that it has a high contact angle, that it

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Gongora-Rubio, Mario Ricardo, Juliana de Novais Schianti, Houari Cobas Gomez, and Andre da Costa Teves. "LTCC-3D FLOW FOCUSING FLUIDIC MICROREACTOR FOR NANOPARTICLE FABRICATION AND PRODUCTION SCALE-OUT." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2013, CICMT (2013): 000110–17. http://dx.doi.org/10.4071/cicmt-2013-wp12.

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Miniaturization of chemical processes is becoming a must for green chemistry and sustainable industry processes, so technological research in this direction is well received. Continuous microreactor systems hold many potential benefits over batch reactors allowing: high surface-to-volume ratio, fine adjustment of chemical reaction residence times, small thermal inertia and fast changes in temperature. Advantages of multilayer green ceramics for microprocess applications include: LTCC substrate is chemically inert to most solvents, it has a high contact angle, presents low thermal coefficient o

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3

Okulov, V. L., B. R. Sharifullin, N. Okulova, et al. "Influence of nano- and micro-roughness on vortex generations of mixing flows in a cavity." Physics of Fluids 34, no. 3 (2022): 032005. http://dx.doi.org/10.1063/5.0083503.

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Experiments were carried out in a water-filled elongated cup of a “kitchen scale,” where motion was created by a rotating disk with various micro- and nano-roughness in the top of the cup. The obtained results have shown that for some patterns of nanostructures, there is a noticeable growth of a vortex, generated by the disk, while other roughnesses do not make visible changes in the flow structure. The results are of interest in assessing the efficiency of surfaces with nanoscale roughnesses. Indeed, the first type of nano-roughness may become useful for enhancing soft mixing in chemical and

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Cuomo, Francesca, Andrea Ceglie, Antonella De Leonardis, and Francesco Lopez. "Polymer Capsules for Enzymatic Catalysis in Confined Environments." Catalysts 9, no. 1 (2018): 1. http://dx.doi.org/10.3390/catal9010001.

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Catalysis is at the base of a series of biological and technological application processes. In recent years, the tendency has developed to carry out catalyzed reactions within confined structures, thus forming systems called micro or nanoreactors. Compartmentalized structures are cavities delimited by a wall where specific functions are introduced with a defined concentration and in the desired sites. These containers are generally referred to as nano or microcapsules, assuming the function of reactors in the presence of chemical reactions. Among the various types of existing structures, one o

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Gupta, Vibhuti, Roohi Gupta, Rahul Grover, Rajat Khanna, Vijeta Jangra, and Aditya Mittal. "Delivery of Molecules to Cancer Cells Using Liposomes from Bacterial Cultures." Journal of Nanoscience and Nanotechnology 8, no. 5 (2008): 2328–33. http://dx.doi.org/10.1166/jnn.2008.18273.

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Liposomes have a variety of applications as model systems to study enclosed biological membranes, as delivery vehicles for a variety of drugs and as micro- and nano-reactors, amongst others. However, preparation of liposomes requires use of expensive raw material (synthetic lipids) from specialized commercial suppliers, and ability to make reproducible preparations remains a specialized art till date. In this work, we prepared liposomes using natural lipids extracted from the bacteria Escherichia coli (E. coli), which are extremely economical compared to the synthetic lipids. We demonstrate ro

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Tuleushova, Nazym, Aisara Amanova, Ibrahim Abdellah, et al. "Radiolysis-Assisted Direct Growth of Gold-Based Electrocatalysts for Glycerol Oxidation." Nanomaterials 13, no. 11 (2023): 1713. http://dx.doi.org/10.3390/nano13111713.

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The electrocatalytic oxidation of glycerol by metal electrocatalysts is an effective method of low-energy-input hydrogen production in membrane reactors in alkaline conditions. The aim of the present study is to examine the proof of concept for the gamma-radiolysis-assisted direct growth of monometallic gold and bimetallic gold–silver nanostructured particles. We revised the gamma radiolysis procedure to generate free-standing Au and Au-Ag nano- and micro-structured particles onto a gas diffusion electrode by the immersion of the substrate in the reaction mixture. The metal particles were synt

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Popa-Simil, Liviu. "ENGINEERED NANO-MATERIALS FOR ENERGY AND THEIR POTENTIAL IMPACT ON ACTUAL ENVIRONMENTAL ISSUES." International Journal of Research -GRANTHAALAYAH 9, no. 11 (2021): 53–71. http://dx.doi.org/10.29121/granthaalayah.v9.i11.2021.4374.

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It is known for more than 2000 years that Damascus swords’ performances were not possible without the existence and usage of the “Damascus steel”, the first man made nano-hetero structural material that generalized is clearly showing that materials determine ultimate properties of the objects that made of. The actual world energy is manly based carbon emission materials, as coal, heavy oil, methane gas, with negative environment impact. Solar, wind and geothermal energy have also a negative impact on environment and have to be smartly used to minimize it. Nuclear energy, has lower CO2 emission

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Akay, Galip. "Green Ammonia, Nitric Acid, Advanced Fertilizer and Electricity Production with In Situ CO2 Capture and Utilization by Integrated Intensified Nonthermal Plasma Catalytic Processes: A Technology Transfer Review for Distributed Biorefineries." Catalysts 15, no. 2 (2025): 105. https://doi.org/10.3390/catal15020105.

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An Integrated Process Intensification (IPI) technology-based roadmap is proposed for the utilization of renewables (water, air and biomass/unavoidable waste) in the small-scale distributed production of the following primary products: electricity, H2, NH3, HNO3 and symbiotic advanced (SX) fertilizers with CO2 mineralization capacity to achieve negative CO2 emission. Such a production platform is an integrated intensified biorefinery (IIBR), used as an alternative to large-scale centralized production which relies on green electricity and CCUS. Hence, the capacity and availability of the renewa

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Wang, Gang, Pengcheng Hao, Yanping Liang, et al. "The new life of traditional water treatment flocculant polyaluminum chloride (PAC): a green and efficient micro–nano reactor catalyst in alcohol solvents." RSC Advances 12, no. 2 (2022): 655–63. http://dx.doi.org/10.1039/d1ra08038e.

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CHKHAIDZE, Ekaterine, Nino NEPARIDZE, Manana SIRADZE, and Tamar LOLADZE. "Reactions of chemical transformation of unsaturated co-polyesteramide." Journal of Technical Science and Technologies 4, no. 2 (2016): 23–26. http://dx.doi.org/10.31578/jtst.v4i2.78.

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The article deals with the obtaining of functional polymers, which are prospective in the form of biodegradable carrier polymers for covalent bonding of medicaments and bioactive compounds with them, as well as for pharmaceuticals delivery systems, micro- and nano capsulation etc. They are obtained as a result of chemical transformation by means of additive reaction of unsaturated/saturated polyesteramide containing unsaturated bonds with thioglycolic acid, 2-mercaptoethanol and β-alanine.

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11

Abdolhosseinzadeh, Maryam, and Niloofar Khodamoradi. "Synthesis & Study of Nano Size Copper Oxide Particle via Chemical Method." Advanced Materials Research 829 (November 2013): 187–91. http://dx.doi.org/10.4028/www.scientific.net/amr.829.187.

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Copper oxide nanoparticles have been synthesized using micro reactors made of bis (2-ethylhexyle) sulfosuccinate (AOT)/water/n-Hexane microemulsions. The controls of particles size was achieved by varying water to surfactant molar ratio (W0). At constant of surfactant concentration the increases in value of W0increased the population of micelles and resulted in lager particle size. Their sizes and appearance were characterized by TEM, SEM, Zetasizer, uv-visible methods. Scanning electron microscopy (SEM) showed the spherical morphology of as prepared CuO nanoparticles. The Transmission electro

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Barua, Himel, and Alex Povitsky. "Continuum and Molecular Modeling of Chemical Vapor Deposition at Nano-Scale Fibrous Substrates." Mathematical and Computational Applications 28, no. 6 (2023): 112. http://dx.doi.org/10.3390/mca28060112.

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Chemical vapor deposition (CVD) is a common industrial process that incorporates a complex combination of fluid flow, chemical reactions, and surface deposition. Understanding CVD processes requires rigorous and costly experimentation involving multiple spatial scales, from meters to nanometers. The numerical modeling of deposition over macro-scale substrates has been conducted in the literature and results show compliance with experimental data. For smaller-scale substrates, where the corresponding Knudsen number is larger than zero, continuum modeling does not provide accurate results, which

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Emami, Samira, and Mir Mohammad Alavi Nikje. "Environmentally benign chemical recycling of polycarbonate wastes: comparison of micro- and nano-TiO2 solid support efficiencies." Green Processing and Synthesis 8, no. 1 (2019): 108–17. http://dx.doi.org/10.1515/gps-2018-0028.

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Abstract Polycarbonate (PC) wastes, including optical discs (CDs) and digital optical discs (DVDs), were chemically recycled into valuable materials such as 4,4′-(propane-2,2-diyl)diphenol (BPA) and etherified derivatives of BPA using sodium hydroxide (NaOH) as the alkali metal catalyst and nanostructured titanium dioxide (nano-TiO2) and microstructured titanium dioxide (micro-TiO2) as the solid supports in the binary green system consisting of water and 2,2′-oxydi(ethan-1-ol) (DEG) under conventional heating method, and data were compared. In this study, the effects of various parameters, suc

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14

Barbosa, Divani C., M. R. Baldan, V. J. Trava-Airoldi, and Evaldo Jose Corat. "Micro, Nano and Ultranano-Crystalline Diamond Deposition." Materials Science Forum 802 (December 2014): 168–73. http://dx.doi.org/10.4028/www.scientific.net/msf.802.168.

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This is a comparative experimental study of the micro, nanoand ultranano-crystalline diamond deposition. The Hot Filament Chemical Vapor Deposition (HFCVD) reactor deposits the films using different deposition parameters. Scanning Electron Microscopy and Field Emission Scanning Electron Microscopy let morphology inspection. Visible-Raman scattering loaded to estimating relative induced stress, by the graphite peak shift and associated with the defect incorporation and sp2bond enhancement. The x-ray diffraction confirmed the diamond crystallinity, where Scherrer ́s equations estimate crystallit

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Zhang, Shuai, Gulijiazi Yeerkenbieke, Shuai Shi, Zhaoyang Wang, Lijin Yi, and Xiaoxia Lu. "Adsorption of Pyrene and Arsenite by Micro/Nano Carbon Black and Iron Oxide." Toxics 12, no. 4 (2024): 251. http://dx.doi.org/10.3390/toxics12040251.

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Polycyclic aromatic hydrocarbons (PAHs) and arsenic (As) are common pollutants co-existing in the environment, causing potential hazards to the ecosystem and human health. How their behaviors are affected by micro/nano particles in the environment are still not very clear. Through a series of static adsorption experiments, this study investigated the adsorption of pyrene and arsenite (As (III)) using micro/nano carbon black and iron oxide under different conditions. The objectives were to determine the kinetics and isotherms of the adsorption of pyrene and As (III) using micro/nano carbon blac

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Banerjee, Deepankar, and Sabyasachi Sarkar. "Chemical and Biochemical Onslaught of Anthropogenic Airborne Species on the Heritage Monument of the Taj Mahal." Heritage 2, no. 3 (2019): 2137–59. http://dx.doi.org/10.3390/heritage2030129.

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The science on the anthropogenic airborne aerosols impacting the World Heritage marble monument, the Taj Mahal, at Agra, has been studied in the light of modern physico-chemical approaches. The study is an effort to understand unrecognized airborne species which were found on the surface of the Taj Mahal monument. These species have been analyzed in the light of current analytical methods to impart characterization features and their possible impacts on the surface of the marble. Chemical constituents of these substrates, which were incorporated over the top surface of the monument, have been

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Lundgaard, Stefan, Soon Hock Ng, Damien Cahill, et al. "Electrical Breakdown Spectroscopy of Nano-/Micro-Thermites." Technologies 9, no. 2 (2021): 34. http://dx.doi.org/10.3390/technologies9020034.

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We describe the optical and electrical analysis of a micro-explosion of silicon and micro-thermite micro-bridges with a spectral temporal resolution within a 2 ms time range. The intensity of peaks and their mean lifetimes are calculated to identify the contributing atomic and molecular species. Singly ionised atoms and molecules were the main contributor to spectroscopic signature of emission. It is shown that micro-bridges can be used to characterise small (safe) < 10 mg amounts of energetic materials. Use of ions at low ionisation numbers of Si as well as Cu-oxides with different metal-t

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Kumar, S., P. Kumar, and R. Pratap. "Reliability Failure in Microelectronic Interconnects by Electric Current Induced Chemical Reaction." IOP Conference Series: Materials Science and Engineering 1206, no. 1 (2021): 012026. http://dx.doi.org/10.1088/1757-899x/1206/1/012026.

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Abstract The electric field-induced chemical reaction in Cr thin film by a micro/nano-probe has been recently reported with detailed characterization. Although the phenomenon is employed for micro-nano fabrication, this can act as a reliability failure, where Cr is used as an adhesion layer or main interconnects in microelectronic circuits. Here, we present an investigation on the role of electric current density for such failure using a specifically designed sample. A 100 μm width and 100 nm thin Cr film is deposited perpendicular to the Pt film of similar dimensions. The anode probe (20 μm d

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19

Trombino, Sonia, Roberta Sole, Maria Luisa Di Gioia, Debora Procopio, Federica Curcio, and Roberta Cassano. "Green Chemistry Principles for Nano- and Micro-Sized Hydrogel Synthesis." Molecules 28, no. 5 (2023): 2107. http://dx.doi.org/10.3390/molecules28052107.

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The growing demand for drug carriers and green-technology-based tissue engineering materials has enabled the fabrication of different types of micro- and nano-assemblies. Hydrogels are a type of material that have been extensively investigated in recent decades. Their physical and chemical properties, such as hydrophilicity, resemblance to living systems, swelling ability and modifiability, make them suitable to be exploited for many pharmaceutical and bioengineering applications. This review deals with a brief account of green-manufactured hydrogels, their characteristics, preparations, impor

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Zhang, Zhao, Xudong Qin, Silu Ma, Yang Liu, Liping Wang, and Xinyang Zhao. "Synergistic Effect of WS2 and Micro-Textures to Inhibit Graphitization and Delamination of Micro-Nano Diamond-Coated Tools." Crystals 13, no. 7 (2023): 1034. http://dx.doi.org/10.3390/cryst13071034.

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Diamond-coated tools often fail due to coating graphitization and delamination caused by poor coating adhesion, large contact stress, and thermochemical reactions. To address these issues, this research utilized a combination of micro-nano double-layer diamond coating, WS2 coating, and micro-textures. The WS2 coating inhibits the graphitization of the diamond coating through a transfer film mechanism, while the micro-textures and nanocrystalline diamond coating store WS2, resulting in a prolonged lubrication life. Additionally, the influence of micro-texture on coating-substrate residual stres

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Yee, Maxine Swee-Li, Ling-Wei Hii, Chin King Looi, et al. "Impact of Microplastics and Nanoplastics on Human Health." Nanomaterials 11, no. 2 (2021): 496. http://dx.doi.org/10.3390/nano11020496.

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Plastics have enormous impacts to every aspect of daily life including technology, medicine and treatments, and domestic appliances. Most of the used plastics are thrown away by consumers after a single use, which has become a huge environmental problem as they will end up in landfill, oceans and other waterways. These plastics are discarded in vast numbers each day, and the breaking down of the plastics from micro- to nano-sizes has led to worries about how toxic these plastics are to the environment and humans. While, there are several earlier studies reported the effects of micro- and nano-

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Yoshino, Masahiko, and Nobuyuki Moronuki. "Special Issue on Novel Fabrication Processes for Tailored Functional Materials and Surfaces." International Journal of Automation Technology 14, no. 2 (2020): 147. http://dx.doi.org/10.20965/ijat.2020.p0147.

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The properties of a mechanical material depend not only on its chemical components but also on the micro/nano structures of its surface and interior. Attempts have been made in recent years to develop new surface/material functions through mechanical processes. For example, technologies to control various characteristics, such as friction, water repellency, and optical properties, have been developed by constructing micro/nano periodic structures on the surfaces of materials. Since these properties depend on the geometry of the surface morphology, micro/nano fabrication processes can produce a

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Van der Borght, Alexopoulos, Toch, Thybaut, Marin, and Galvita. "First-Principles-Based Simulation of an Industrial Ethanol Dehydration Reactor." Catalysts 9, no. 11 (2019): 921. http://dx.doi.org/10.3390/catal9110921.

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The achievement of new economically viable chemical processes often involves the translation of observed lab-scale phenomena into performance in an industrial reactor. In this work, the in silico design and optimization of an industrial ethanol dehydration reactor were performed, employing a multiscale model ranging from nano-, over micro-, to macroscale. The intrinsic kinetics of the elementary steps was quantified through ab initio obtained rate and equilibrium coefficients. Heat and mass transfer limitations for the industrial design case were assessed via literature correlations. The indus

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Li, S. W., J. H. Xu, Y. J. Wang, and G. S. Luo. "Modeling of nano-particle precipitation process in a membrane dispersion micro-structured reactor." Powder Technology 195, no. 3 (2009): 213–20. http://dx.doi.org/10.1016/j.powtec.2009.06.001.

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Ahmed AbdelKawy, Mohamed. "Production of Pure Nano-Iron by Using Ball Milling Machine, Chemical Batch Reactor and K-M Micro Reactor." American Journal of Applied Chemistry 3, no. 3 (2015): 8. http://dx.doi.org/10.11648/j.ajac.s.2015030301.12.

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Hu, Zhong, and Lin Wei. "Review on Characterization of Biochar Derived from Biomass Pyrolysis via Reactive Molecular Dynamics Simulations." Journal of Composites Science 7, no. 9 (2023): 354. http://dx.doi.org/10.3390/jcs7090354.

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Biochar is a carbon-rich solid produced during the thermochemical processes of various biomass feedstocks. As a low-cost and environmentally friendly material, biochar has multiple significant advantages and potentials, and it can replace more expensive synthetic carbon materials for many applications in nanocomposites, energy storage, sensors, and biosensors. Due to biomass feedstock species, reactor types, operating conditions, and the interaction between different factors, the compositions, structure and function, and physicochemical properties of the biochar may vary greatly, traditional t

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Pape, Florian. "Nano- and Micro-Tribological Investigations of Boundary Layers on Axial Bearing Washers Tested under WEC Critical Conditions." Lubricants 10, no. 8 (2022): 198. http://dx.doi.org/10.3390/lubricants10080198.

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The formation of boundary layers on bearing surfaces due to the operational conditions has a significant influence on bearing lifetimes and frictional properties. Zinc dialkyldithiophosphate is an anti-wear additive widely used in oil and grease formulations that forms beneficial surface boundary layers. Under certain circumstances, this additive can cause early bearing failure due to white etching cracks (WEC) formation. By influencing chemical reactions and diffusion processes, the boundary films are suspected to be a reason for the emergence of WECs. The properties of these layers under WEC

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А.М., Ефремов, Мурин Д.Б. та Бетелин В.Б. "Кинетика и концентрации активных частиц в плазме галогенводородов". Труды НИИСИ РАН 9, № 4 (2019): 92–99. http://dx.doi.org/10.25682/niisi.2019.4.0013.

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Проведено сравнительное исследование кинетики активных частиц в плазме HX (X = F, Cl, Br) в условиях, характерных для процессов плазмохимического и реактивно-ионного травления микро- и нано-структур. Установлены зависимости концентраций исходных веществ и продуктов плазмохимических реакций от концентрации электронов. Выявлены факторы, определяющие различия стационарного состава плазмы в исследуемых системах. The comparative study of active species kinetics in HX (X = F, Cl, Br) plasmas under the conditions of plasma-chemical and reactive-ion etching processes for micro-and nano-structuring was

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Serour, Nourwanda M., Ahmed S. E. Hammad, Ahmed H. El-Shazly, Dina A. El-Gayar, and Shaaban A. Nosier. "Novel Green Micro-Synthesis of Graphene-Titanium Dioxide Nano- Composites with Photo-Electrochemical Properties." Current Nanoscience 15, no. 6 (2019): 606–17. http://dx.doi.org/10.2174/1573413715666181212123137.

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Background: Graphene-Titanium dioxide nano-composite forms a very promising material in the field of photo-electrochemical research. Methods: In this study, a novel environment-friendly synthesis method was developed to produce well-distributed anatase nano-titanium dioxide spherical particles on the surface of graphene sheets. This novel method has great advantages over previously developed methods of producing graphenetitanium dioxide nanocomposites (GTNCs). High calcination temperature 650°C was used in the preparation of nano titanium dioxide, and chemical exfoliation for graphene synthesi

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Pourali, Nima, Volker Hessel, and Evgeny V. Rebrov. "The Effects of Pulse Shape on the Selectivity and Production Rate in Non-oxidative Coupling of Methane by a Micro-DBD Reactor." Plasma Chemistry and Plasma Processing 42, no. 3 (2022): 619–40. http://dx.doi.org/10.1007/s11090-022-10242-6.

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AbstractThe conversion of methane to ethylene has been investigated in a micro-DBD reactor with electrodes containing charge injector parts and excited with a negatively nano-second pulse voltage superimposed on a positive dc voltage. The effect of changing the characteristics of pulsed voltage such as pulse rise time (5–7 ns), total pulse width (12–14 ns), and pulse fall time (5–7 ns) on generation rate and products selectivity of the methane plasma has been studied. The kinetic model includes twenty species (electron, ions, radicals, and neutrals). The results showed that change in input pul

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Zhang, Lisheng, Yiyuan Zhang, Xueyan Wang, and Duan Zhang. "Plasma-Driven Photocatalysis Based on Gold Nanoporous Arrays." Nanomaterials 11, no. 10 (2021): 2710. http://dx.doi.org/10.3390/nano11102710.

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Various effects caused by surface plasmons including enhanced electromagnetic field, local heating, and excited electrons/holes can not only redistribute the electromagnetic field in the time domain and space but also redistribute the excited carriers and drive chemical reactions. In this study, firstly, an Au nanoporous array photocatalyst with the arrayed gauge was prepared by means of the anodic alumina template. Then, the formation of 4,4′-dimercaptoazobenzene (DMAB) by the surface plasmon-driven photocatalysis under 633 nm laser irradiation was investigated by means of Raman spectroscopy

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Hossain, Khan Rajib, Md Abu Shyeed, Md Al Amin, et al. "Nanomaterials Function in Additive Manufacturing." Journal of Kufa-Physics 15, no. 02 (2023): 23–39. http://dx.doi.org/10.31257/2018/jkp/2023/v15.i02.13538.

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Nanomaterials are substances that have at least one dimension that falls within the three-dimensional nanoscale range or fundamental structural components made of substances that fall inside this range. Micro-nano 3D printing technology can realize the processing of 3D micro-nano structures with nanometer precision and has broad application prospects in many fields. Metals and polymers can be easily connected through bonding reactions to obtain metal-metal or covalent bonds in 3D printing. These potent chemical bonds make 3D-printed structures stable, and 3D printing of metals and plastics is

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Li, Kezhi, Dongsheng Zhang, Lingjun Guo, and Hejun Li. "Micro- and Nano-structure Characterization of Isotropic Pyrocarbon Obtained via Chemical Vapor Deposition in Hot Wall Reactor." Journal of Materials Science & Technology 26, no. 12 (2010): 1133–38. http://dx.doi.org/10.1016/s1005-0302(11)60013-3.

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Can, Ulas, and Cevdet Kaynak. "Performance of polylactide against UV irradiation: Synergism of an organic UV absorber with micron and nano-sized TiO2." Journal of Composite Materials 54, no. 18 (2020): 2489–504. http://dx.doi.org/10.1177/0021998319899140.

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The main purpose of this study was to investigate mechanical and thermal performance of polylactide specimens against UV irradiation; first when only adding benzotriazole benzotriazole-based organic UV absorber (UVA), micro (200 nm) and nano (50 nm) sized titania (TiO2) particles alone, and then to reveal possible synergism when they are added together. Compounds were prepared by twin-screw extruder melt mixing, while the 2 mm thick specimens were shaped by compression molding. Specimens were exposed to UV irradiation under fluorescent lamps (UVB-313) with 0.50 W/m2 for the periods of 12 and 2

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Arantes, Tatiane M., Nazir M. Santos, Adriana F. Azevedo, Mauricio R. Baldan, and Neidenei G. Ferreira. "Fourier Transform Infrared Spectroscopic Study of Boron-Doped Micro/Nano/Ultrananocrystalline Diamond Prepared by Chemical Vapor Deposition." Materials Science Forum 802 (December 2014): 140–45. http://dx.doi.org/10.4028/www.scientific.net/msf.802.140.

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Boron-doped diamond (BDD) films were grown with different grain sizes. The films were deposited on silicon substrate after a suitable pre-treatment in a hot filament assisted by chemical vapor deposition (CVD) reactor in Ar/H2/CH4gas mixtures. The addition of argon to the growth gas mixture clearly revealed the transition from nanocrystalline (BDND) to ultrananocrystalline (BDUND) diamond films. Raman spectroscopy results of BDD, BDND and BDUND exhibited a good quality diamond films considering the diamond defined peak. Fourier Transform Infrared Spectroscopy (FTIR) spectra indicated carbonyl

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Yang, S. W., D. H. Lim, D. J. Yoo, Y. Kang, C. G. Lee, and G. M. Kang. "Opto-magnetic properties of nano-structured MgO:Al powders prepared in a micro drop fluidized reactor." Advanced Powder Technology 29, no. 3 (2018): 499–505. http://dx.doi.org/10.1016/j.apt.2018.02.022.

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Kishan Davda, Kushal Patel, and Ramesh Kumar V. "The Role of Micro Propulsion in Enabling Autonomous Operations of Nanosatellites." Acceleron Aerospace Journal 3, no. 6 (2024): 679–87. https://doi.org/10.61359/11.2106-2467.

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Micro-Electro-Mechanical Systems (MEMS)-based propulsion devices have significant potential for providing high specific power. The application of Micro Power Generation technology to space propulsion systems can enhance orbit and station-keeping capabilities, potentially at lower costs. New-generation spacecraft and satellites are becoming smaller and require micro-propulsion systems for all aspects of their operations. The development of micro-propulsion systems with associated combustors for micro-electricity generation, utilizing liquid fuel, presents major challenges in fuel injection, mix

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Lv, Chao, Hong-Xin Yin, Yan-Long Liu, Xu-Xin Chen, Ming-He Sun, and Hong-Liang Zhao. "Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles." Crystals 12, no. 6 (2022): 843. http://dx.doi.org/10.3390/cryst12060843.

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Micro–nano cerium oxide particles with regular morphology and good dispersity have been widely used in polishing and other industrial fields. Microwave heating is an effective, controllable and green heating technology. The Venturi reactor used for microwave heating developed by our team was the core equipment utilized to study the effects of pyrolysis conditions on the purity and microstructure of cerium oxide particles. The experiments were carried out and the products were characterized using XRD, SEM and EDS. Microwave heating, fluid flow and chemical reaction were coupled using numerical

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Hammud, Kafa Khalaf. "A Brief Journey in Nanomaterials: Base and Recent Research Trends." Iraqi Journal of Industrial Research 10, no. 2 (2023): 64–75. http://dx.doi.org/10.53523/ijoirvol10i2id288.

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Nano – term is a mimicking dimensional philosophy of natural structure. With same context, nanomaterials in research and processing display a mimic philosophy with particular function(s) in human and other living creatures such as DNA, ribosome, antibody, enzyme, protein, glucose, haemoglobin, and bone (hydroxyapatite or collagen). Also, some microorganisms (bacteria or viruses) are in nano-sized that enabling them for easily entrance to their hosts. According to range definition (1-100(nm)), type, application, toxicity beside environmental impact for short – and long term, nanomaterial and na

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Yelemessova, Zh, B. Milikhat, A. Yerken, Z. Mansurov, and A. Imangazy. "ENERGETIC COMPOSITE MATERIALS FOR MICRO-INITIATION SYSTEMS: COMPOSITION-PERFORMANCE RELATIONSHIPS." Chemical Journal of Kazakhstan, no. 2 (June 30, 2025): 62–80. https://doi.org/10.51580/2025-2.2710-1185.23.

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Introduction. Micro-initiation systems are crucial for the advancement of smart combustible technologies, enabling highly localized and controlled initiation of energetic reactions at the microscale. These systems are essential in applications such as micro-chips, MEMS devices, and smart munitions, and they depend on energetic composite materials (ECMs) that effectively balance performance and safety. Objective of the study. This review examines the relationships between composition and performance in energetic materials (ECMs) used in micro-initiation systems. It focuses on the chemical, stru

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Zhang, Yong-Qi, Xuan Wang, Ping-Lan Yu, and Wei-Feng Sun. "Water-Tree Resistant Characteristics of Crosslinker-Modified-SiO2/XLPE Nanocomposites." Materials 14, no. 6 (2021): 1398. http://dx.doi.org/10.3390/ma14061398.

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Trimethylolpropane triacrylate (TMPTA) as a photoactive crosslinker is grafted onto hydrophobic nanosilica surface through click chemical reactions of mercapto double bonds to prepare the functionalized nanoparticles (TMPTA-s-SiO2), which are used to develop TMPTA-s-SiO2/XLPE nanocomposites with improvements in mechanical strength and electrical resistance. The expedited aging experiments of water-tree growth are performed with a water-knife electrode and analyzed in consistence with the mechanical performances evaluated by means of dynamic thermo-mechanical analysis (DMA) and tensile stress–s

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Neri, Giulia, Enza Fazio, Antonia Nostro, et al. "Shedding Light on the Chemistry and the Properties of Münchnone Functionalized Graphene." Nanomaterials 11, no. 7 (2021): 1629. http://dx.doi.org/10.3390/nano11071629.

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Münchnones are mesoionic oxazolium 5-oxides with azomethine ylide characteristics that provide pyrrole derivatives by a 1,3-dipolar cycloaddition (1,3-DC) reaction with acetylenic dipolarophiles. Their reactivity was widely exploited for the synthesis of small molecules, but it was not yet investigated for the functionalization of graphene-based materials. Herein, we report our results on the preparation of münchnone functionalized graphene via cycloaddition reactions, followed by the spontaneous loss of carbon dioxide and its further chemical modification to silver/nisin nanocomposites to con

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Kozytskyi, S. V. "Synthesis of micro- and nano-sized zinc sulfide crystallites by the method of self-propagating high-temperature synthesis." Physics of Aerodisperse Systems, no. 61 (December 9, 2023): 32–42. http://dx.doi.org/10.18524/0367-1631.2023.61.290948.

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The paper presents the results that demonstrate how ZnS crystallites of different sizes can be obtained by the method of self-propagating high-temperature synthesis (SHS). The SHS is possible due to an exothermic reactions occurring in mixtures of Zn and S powders, due to a large amount of heat released (enthalpy of formation being 202 kJ/mol). Pressed powders of Zn and S are placed in a stoichiometric ratio into a reactor filled with Ar or N under a pressure of P>0.5 MPa. After initiated by ignition, the chemical reaction propagates through the mixture to produce a sample in the form of an

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Chen, B. J., X. W. Sun, C. X. Xu, and B. K. Tay. "Growth and characterization of zinc oxide nano/micro-fibers by thermal chemical reactions and vapor transport deposition in air." Physica E: Low-dimensional Systems and Nanostructures 21, no. 1 (2004): 103–7. http://dx.doi.org/10.1016/j.physe.2003.08.077.

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Song, Yu, Xi Lu, Zhibao Liu, et al. "Efficient Removal of Cr(VI) by TiO2 Based Micro-Nano Reactor via the Synergy of Adsorption and Photocatalysis." Nanomaterials 12, no. 2 (2022): 291. http://dx.doi.org/10.3390/nano12020291.

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The low-toxicity treatment of chromium-containing wastewater represents an important way of addressing key environmental problems. In this study, a core-shell structural ZIF-8@TiO2 photocatalyst was synthesized by a simple one-step hydrothermal method. The obtained composite photocatalyst possessed improved photocatalytic activity compared with TiO2. The results indicated that the optimized ZIF-8@TiO2 composite exhibited the highest removal efficiency with 93.1% of Cr(VI) after 120 min under UV-vis irradiation. The removal curves and XPS results indicated that the adsorbed Cr(VI) on the ZIF-8

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Salerno, Simona, and Loredana De Bartolo. "Biohybrid Membrane Systems and Bioreactors as Tools for In Vitro Drug Testing." Current Pharmaceutical Design 23, no. 2 (2017): 319–27. http://dx.doi.org/10.2174/1381612822666161025155616.

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In drug development, in vitro human model systems are absolutely essential prior to the clinical trials, considering the increasing number of chemical compounds in need of testing, and, keeping in mind that animals cannot predict all the adverse human health effects and reactions, due to the species-specific differences in metabolic pathways. The liver plays a central role in the clearance and biotransformation of chemicals and xenobiotics. In vitro liver model systems by using highly differentiated human cells could have a great impact in preclinical trials. Membrane biohybrid systems constit

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Garcia-Alles, Luis F., Miguel Fuentes-Cabrera, Gilles Truan, and David Reguera. "Inferring assembly-curving trends of bacterial micro-compartment shell hexamers from crystal structure arrangements." PLOS Computational Biology 19, no. 4 (2023): e1011038. http://dx.doi.org/10.1371/journal.pcbi.1011038.

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Bacterial microcompartments (BMC) are complex macromolecular assemblies that participate in varied chemical processes in about one fourth of bacterial species. BMC-encapsulated enzymatic activities are segregated from other cell contents by means of semipermeable shells, justifying why BMC are viewed as prototype nano-reactors for biotechnological applications. Herein, we undertook a comparative study of bending propensities of BMC hexamers (BMC-H), the most abundant shell constituents. Published data show that some BMC-H, like β-carboxysomal CcmK, tend to assemble flat whereas other BMC-H oft

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Esposito, Elisabetta, Markus Drechsler, Carmelo Puglia, and Rita Cortesi. "New Strategies for the Delivery of Some Natural Anti-oxidants with Therapeutic Properties." Mini-Reviews in Medicinal Chemistry 19, no. 13 (2019): 1030–39. http://dx.doi.org/10.2174/1389557519666190228160242.

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Nature offers tremendous potential in the medicine field. Natural antioxidant molecules inhibit or quench free radical reactions and delay or inhibit cellular damage. In the last few years, researchers have been focusing on the health benefits of natural products. Particularly some dietary nutrients, such as curcumin, crocin, resveratrol, quercetin, coenzyme Q10, vitamin C, as well as some polysaccharides have been evaluated for their numerous and unique therapeutic properties. This review focuses on examples of pharmaceutical applications of natural anti-oxidants, with special regards to thei

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Skryabina, N. E., Vladimir M. Pinyugzhanin, and Daniel Fruchart. "Relationship between Micro-/Nano-Structure and Stress Development in TM-Doped Mg-Based Alloys Absorbing Hydrogen." Solid State Phenomena 194 (November 2012): 237–44. http://dx.doi.org/10.4028/www.scientific.net/ssp.194.237.

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In the most recent years, MgH2has attracted considerable attention for reversible hydrogen storage purposes because of a large 7.6 w% H-uptake, single plateau reaction at low pressure and abundance of metal. If the Mg ↔ H reactions take place at rather high temperature (> 300°C), the kinetic remains very low. However, early transition metal based additives (Ti, V, Nb...) improve dramatically the kinetics of hydrogen absorption/desorption, while having no essential impact on the reversible sorption capacity. Systematic analysis of many experimental data led to question chemical, physical, me

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Nakamura, Hiroyuki, Xianying Li, Hongzhi Wang, et al. "A simple method of self assembled nano-particles deposition on the micro-capillary inner walls and the reactor application for photo-catalytic and enzyme reactions." Chemical Engineering Journal 101, no. 1-3 (2004): 261–68. http://dx.doi.org/10.1016/j.cej.2003.11.022.

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