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Journal articles on the topic 'Dendrites size modification'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Holovko, V. "NANOMODIFICATION OF WELD METAL DENDRITE STRUCTURE." Deutsche internationale Zeitschrift für zeitgenössische Wissenschaft 48 (January 16, 2023): 41–46. https://doi.org/10.5281/zenodo.7541168.

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The shape of dendrite grains in low-alloy steel submerged-arc weld deposits has been examined; it is found that the dendrite grain morphology can be modified because of dispersed refractory inclusions inoculation in the weld pool. Influences of inoculated inclusions on dendrites grain size are also discussed. An increase in the dendrite size has been found to increases content of toughness ferrite structure in weld met

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2

Zhang, Jing, Zhou Yi Pang, Chi Chi Sun, Ning Liu, and Hong Mei Chen. "Effect of Strontium Modification on the Morphology of Primary Si in Hypereutectic Al-Si Alloys." Materials Science Forum 993 (May 2020): 12–21. http://dx.doi.org/10.4028/www.scientific.net/msf.993.12.

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In the present study, hypereutectic Al-Si alloys were modified by strontium and the effect of the strontium content and holding time on the morphology of primary Si was investigated. Primary Si is modified to imperfect octahedron with primary dendrites or secondary dendrites when the amount of Sr exceeds 0.04wt.%. With extending the holding time, there is no significant difference with the morphology of primary Si. However, the size of primary Si decreases remarkably when the holding time prolongs to 120min. Further analysis reveals that the Sr content has a considerable impact on the morpholo

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3

Maniara, Rafal, Leszek Adam Dobrzański, Jerry Sokolowski, Wojciech Kasprzak, and Witold T. Kierkus. "Influence of Cooling Rate on the Size of the Precipitates and Thermal Characteristic of Al-Si Cast Alloys." Advanced Materials Research 15-17 (February 2006): 59–64. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.59.

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In this work effect of cooling rate on the size of the grains, SDAS, β phases and thermal characteristic results of Al-Si cast alloys have been described. The solidification process was studied using the cooling and crystallization curve at cooling rate ranging from 0,1 °Cs-1 up to 1 °Cs-1. The main observation made from this work was that when cooling rate is increased the aluminum dendrites nucleation temperature and solid fraction at the dendrite coherency point increases, which implies that mass feeding is extended. In addition to that, it was observed that solidus temperature and size of

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4

Chen, Zhong Wei, Hai Fang Zhang, and Jiang Chao Zhao. "Electron Back Scattering Diffraction Analysis of A357 Alloy Modified by Sr." Advanced Materials Research 160-162 (November 2010): 831–35. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.831.

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Microstructure of A357 alloy modified by Sr has been investigated by the Electron Back Scattering Diffraction (EBSD) mapping technique using a Field Emission Gun Scanning Electron Microscopy (FEG-SEM). An appropriate sample preparation technique by ion milling was applied to obtain a sufficiently smooth surface for EBSD mapping. Results show that the eutectic morphology in microstructure of A357 alloy modified by Sr was changed to fine fibrous, and the grain size was refined. By comparing the orientation of the aluminum in the eutectic to that of the primary aluminum dendrites, the nucleation

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5

Promakhov, Vladimir, Marina Khmeleva, Ilya Zhukov, Vladimir Platov, Anton Khrustalyov, and Alexander Vorozhtsov. "Influence of Vibration Treatment and Modification of A356 Aluminum Alloy on Its Structure and Mechanical Properties." Metals 9, no. 1 (2019): 87. http://dx.doi.org/10.3390/met9010087.

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A series of casting experiments was conducted with A356 aluminum alloys by applying vibration treatment and using Al-TiB2 composite master alloys. The main vibration effects include the promotion of nucleation and a reduction in as-cast grain size. Using composite master alloys with titanium diboride microparticles allows further reduction in the average grain size to 140 µm. The reasons for this behavior are discussed in terms of the complex effect on the melt, considering the destruction of dendrites, and the presence of additional crystallization centers. Tensile tests were performed on the

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Liu, Niu Can, Guang Sheng Kang, and Zhong Xia Liu. "Study on Microstructure and Impact Toughness of In Situ Mg₂Si Particle Reinforced Al-Si Matrix Composites." Advanced Materials Research 557-559 (July 2012): 215–18. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.215.

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The microstructure and impact toughness of in-situ Mg2Si/Al-Si composites were studied in the different content of Sb. The results show that Sb can improve the microstructure and impact toughness of Mg2Si/Al-Si composites. When the content of Sb is 0.4%, the morphology of primary Mg2Si changes from dendrites to fine particles, the average size of Mg2Si particles is refined from 52μm to 25μm, and the impact toughness of the composites increases from 6.3572J/cm2 to 11.4394J/cm2. The improvement of impact toughness can be attributed to the fine-grain strengthening. However, excessive Sb is disadv

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7

Yang, Xiong, Shu Sen Wu, Shu Lin Lü, Liang Yan Hao, and Xiao Gang Fang. "Modification of LPSO Structure in Mg-Ni-Y Alloy with Strontium." Materials Science Forum 941 (December 2018): 869–74. http://dx.doi.org/10.4028/www.scientific.net/msf.941.869.

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Effects of Sr levels on microstructure of the LPSO structure-containing Mg98.5-xNi0.5Y1.0Srx(x=0, 0.05, 0.10, 0.20 at.%) alloy were studied by SEM/EDS and XRD. Without Sr addition, the Mg98.5Ni0.5Y1.0alloy consists of α-Mg and LPSO structure and the block LPSO structure is distributed along the grain boundary. After adding 0.05 at.% Sr element into Mg98.5Ni0.5Y1.0alloy, the amount of dendrites decreased. With the increase of Sr content, the size of α-Mg grains decreases firstly and then increases. Meanwhile, the LPSO structure is refined. The addition of Sr element also results in the obvious

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8

Davoisne, Carine, Neelam Yadav, and Mathieu Morcrette. "Failure Modes in Sulfide-Based All Solid-State Batteries (ASSB) Investigated By Operando SEM." ECS Meeting Abstracts MA2023-02, no. 3 (2023): 474. http://dx.doi.org/10.1149/ma2023-023474mtgabs.

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Studies on solid state batteries (ASSB) which began back in 190’s has seen a tremendous growing interest for multiple reasons such as the safety and the ability to use the metallic anodes for enhancing the gravimetric energy density. However, it exists different issues linked with poor performance of the batteries, which could be the results of interfacial challenges such as poor ion transport, dendrite formation, electrochemical degradation and chemo-mechanical degradation[1]. Among the potential parameters impacting the cycling process, the influence of the particle size of solid electrolyte

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Tiedje, Niels Skat, Jesper Henri Hattel, John A. Taylor, and Mark A. Easton. "Modelling Eutectic Growth in Unmodified and Modified Near-Eutectic Al-Si Alloy." Materials Science Forum 765 (July 2013): 160–64. http://dx.doi.org/10.4028/www.scientific.net/msf.765.160.

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A numerical model that describes solidification of primary aluminium grains and nucleation and growth of eutectic cells is used to analyse the solidification of an Al-12.5wt% Si alloy. Nucleation of eutectic cells is modelled using an Oldfield-type nucleation model where the number of nuclei in the melt is determined by the amount of active nuclei and the local undercooling from the surface to the centre of a plate casting. Eutectic grains are modelled as spheres growing between the dendrites. The growth velocity of the eutectic cells is a function of undercooling. Experimentally determined gr

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Ma, Dou Qin, Jing Pei Xie, and Wen Yan Wang. "Effect of Modification on Mechanical Behavior of ZA303 under High Temperature." Materials Science Forum 704-705 (December 2011): 1079–82. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.1079.

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In this paper , by SEM、EDS、XRD and Shimadzu AG-I250KN precision universal testing machine , the metallurgical structure, fracture appearance, the mechanical properties of the ZA303 under high temperature were systematically studied .The results shows that :The microstructure of ZA303 at room temperature are : α phase + (α＋η) eutectoid + ε phase + η phase. After adding modifying elements B、Ti in ZA303：the microstructure of the alloy is from gross dendrites to uniform equiaxed grains , the quantity, morphology and distribution of the (α + η) have greatly change: the quantity of (α + η) is less,

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11

Jing, Qing Xiu, Geng Feng Deng, and Yong Liang. "Modification Microstructures in In Situ Mg₂Si Reinforced Al-Si Alloy Composites." Advanced Materials Research 139-141 (October 2010): 718–22. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.718.

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Effects of several different additions on microstructures in in-situ Mg2Si/A1-Si composites were investigated. The results show that rare earth elements have a selective modification effect on eutectic Mg2Si and Si structures. Al-Ti-B modifier should be introduced appropriately more into the composite, so as to effectively refine primary α-Al grains. As (SrCl2+RE) added increases from 0.4wt% to 2.0wt%, morphology of primary Mg2Si in a 12.0Mg2Si/A1-7.6Si composite is changed from polyhedron (or octahedron) to more irregular polyhedron with a size decrease from about 21μm to 6μm, while eutectic

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12

M. Idriss, A. N., and S. Mridha. "Microstructure of TIG Melted Composite Coating on Steel Produced Using 1.0 and 1.5 mg/mm² TiC at an Energy Input of 2640 J/mm." Advanced Materials Research 576 (October 2012): 467–70. http://dx.doi.org/10.4028/www.scientific.net/amr.576.467.

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Surface modification by reinforcing ceramic particulates can give protection against wear and corrosion of metal. In this work, two different amounts of TiC powder of nominal size 45 to 100 µm were embedded on AISI 4340 steel surfaces by melting under a Tungsten Inert Gas (TIG) welding torch with an energy input of 2640 J/mm. The microstructure, geometry and hardness of the single track composite layers were investigated. The resolidified melt tracks were hemispherical in shape. With increasing TiC content, the melt dimensions reduced a little but the microstructure had a remarkable change. Th

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13

Khorram, Ali, and Morteza Taheri. "Surface modification of IN713 LC superalloy with Metco 204NS by laser surface alloying." Laser Physics 32, no. 10 (2022): 106001. http://dx.doi.org/10.1088/1555-6611/ac8fe5.

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Abstract Ceramics are one of the best engineering materials for coating gas turbine blades. In this study, the Metco204NS ceramic coating (Zr2O + 8%Y2O3) was applied by the laser surface alloying (LSA) method on IN713 LC nickel-based superalloy. To influence the heat input on the structure of the ceramic coating and its substrate, and as well as the rejuvenated zone (RZ), different variables were used in LSA. The results showed that with an increase in heat input by the laser, the sensitivity to liquation cracks in the heat affected zone and solidification cracks in the RZ decreases. The most

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14

Fracchia, Elisa, Federico Simone Gobber, and Mario Rosso. "Effects of Casting-Additives on the Microstructure Evolution of Hypoeutectic Aluminium-Silicon Alloys." Metals 10, no. 5 (2020): 618. http://dx.doi.org/10.3390/met10050618.

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Since the industries are called to produce environmentally friendly products, the research is moving toward new improved materials. In this panorama, aluminium alloys find applications for a large range of products. In the automotive, as well as in the aerospace, sector, aluminium alloys are largely adopted, thanks to their high specific properties and their light weight. Moreover, common casting techniques permit us to realize complex high-quality components. These components may be realized by using casting techniques adopting casting-additives, such as modifiers or refiners. In this work, t

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15

Takashima, Kai, Manabu Kodama, and Shuichiro Hirai. "Performance Improvement of Lithium Metal Anode All-Solid-State Batteries By High-Speed Blowing of Abrasive Grains." ECS Meeting Abstracts MA2022-02, no. 4 (2022): 481. http://dx.doi.org/10.1149/ma2022-024481mtgabs.

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All-solid-state lithium metal batteries (ASSLiMBs) are one of the candidates for a next-generation automotive battery. In particular, oxide-based SEs have relatively high electrochemical stability against lithium metal. Thus, ASSLiMB with oxide SE is expected to be long life and high energy density battery. Poor contact between the lithium metal and oxide SE is an issue to realize ASSLiMB with oxide SE. This poor contact causes high overvoltage at the SE-Li interface, and lithium dendrite grows into the SE, and it reaches to the cathode, then causing a short circuit at high-speed charging that

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16

Poudel, Dhruba P., and Richard T. Taylor. "Thiol-Ene Click-Inspired Late-Stage Modification of Long-Chain Polyurethane Dendrimers." Reactions 3, no. 1 (2021): 12–29. http://dx.doi.org/10.3390/reactions3010002.

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The construction of well-defined polyurethane dendrimers is challenging due to the high reactivity of externally added or in situ formed isocyanates leading to the formation of side products. With a primary focus of dendrimer research being the interaction of the periphery and the core, we report the synthesis of a common polyurethane dendron, which allows for the late-stage variation of both the periphery and the core. The periphery can be varied simply by installing a clickable unit in the dendron and then attaching to the core and vice-versa. Thus, a common dendron allows for varying periph

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Parashar, Ashish K., Preeti Patel, Arun K. Gupta, Neetesh K. Jain, and Balak Das Kurmi. "Synthesis, Characterization and in vivo Evaluation of PEGylated PPI Dendrimer for Safe and Prolonged Delivery of Insulin." Drug Delivery Letters 9, no. 3 (2019): 248–63. http://dx.doi.org/10.2174/2210303109666190401231920.

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Background: The present study was aimed at developing and exploring the use of PEGylated Poly (propyleneimine) dendrimers for the delivery of an anti-diabetic drug, insulin. Methods: For this study, 4.0G PPI dendrimer was synthesized by successive Michael addition and exhaustive amidation reactions, using ethylenediamine as the core and acrylonitrile as the propagating agent. Two different activated PEG moieties were employed for PEGylation of PPI dendrimers. Various physicochemical and physiological parameters UV, IR, NMR, TEM, DSC, drug entrapment, drug release, hemolytic toxicity and blood

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18

Amjad, A. M. "DENDRIMERS IN ANTICANCER TARGETED DRUG DELIVERY: ACCOMPLISHMENTS, CHALLENGES AND DIRECTIONS FOR FUTURE." Pharmacy & Pharmacology 9, no. 1 (2021): 4–16. http://dx.doi.org/10.19163/2307-9266-2021-9-1-4-16.

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Dendrimers are nanoparticles with unique features including globular 3D shape and nanometer size. The availability of numerous terminal functional groups and modifiable surface engineering permit modification of dendrimer surface with several therapeutic agents, diagnostic moieties and targeting substances.The aim. To enlighten the readers regarding design, development, limitations, challenges and future directions regarding anticancer bio-dendrimers.Materials and methods. The data base was represented by such systems as Medline, Cochrane Central Register of Controlled Trials, Scopus, Web of S

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Galenko, Petr, Mikhail Krivilyov, and Konstantin Emelyanov. "Bifurcations in a structure of a free-growing dendrite during solidification of a binary system." Izvestiya VUZ. Applied Nonlinear Dynamics 7, no. 2-3 (1999): 122–36. http://dx.doi.org/10.18500/0869-6632-1999-7-2-122-136.

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Using a model of local nonequilibrium solidification of supercooled binary system the dynamics of a motion of the liquid—solid interface having dendritic structure is investigated. The morphological spectrum of side—branch surface of a free—growing dendrite is defined. The modification of dendritic structure is considered in an association with two controlling parameters: an initial undercooling and position from the tip of dendrite which is define local undercooling at the phase interface. Due to the values of these parameters the interface can become unstable, periodic, and bifurcate with do

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20

Schwindt, Peter C., and Wayne E. Crill. "Modification of Current Transmitted From Apical Dendrite to Soma by Blockade of Voltage- and Ca2+-Dependent Conductances in Rat Neocortical Pyramidal Neurons." Journal of Neurophysiology 78, no. 1 (1997): 187–98. http://dx.doi.org/10.1152/jn.1997.78.1.187.

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Schwindt, Peter C. and Wayne E. Crill. Modification of current transmitted from apical dendrite to soma by blockade of voltage- and Ca2+-dependent conductances in rat neocortical pyramidal neurons. J. Neurophysiol. 78: 187–198, 1997. The axial current transmitted to the soma during the long-lasting iontophoresis of glutamate at a distal site on the apical dendrite was measured by somatic voltage clamp of rat neocortical pyramidal neurons. Evidence for voltage- and Ca2+-gated channels in the apical dendrite was sought by examining the modification of this transmitted current resulting from the

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21

Easton, Mark, John F. Grandfield, David H. StJohn, and Barbara Rinderer. "The Effect of Grain Refinement and Cooling Rate on the Hot Tearing of Wrought Aluminium Alloys." Materials Science Forum 519-521 (July 2006): 1675–80. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.1675.

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Using modifications to the Rappaz-Drezet-Gremaud hot tearing model, and using empirical equations developed for grain size and dendrite arm spacing (DAS) on the addition of grain refiner for a range of cooling rates, the effect of grain refinement and cooling rate on hot tearing susceptibility has been analysed. It was found that grain refinement decreased the grain size and made the grain morphology more globular. Therefore refining the grain size of an equiaxed dendritic grain decreased the hot tearing susceptibility. However, when the alloy was grain refined such that globular grain morphol

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Шарипзянова, Г. Х., Ж. В. Еремеева, Р. А. В. Турлуев, Е. А. Гусева, and Ю. И. Карлина. "EFFECT OF MODIFYING ADDITIVES OF DYSPROSIUM TITANATE ON THE STRUCTURE OF SILUMIN AK12." Metallurg, no. 4 (April 29, 2024): 87–92. http://dx.doi.org/10.52351/00260827_2024_4_87.

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В настоящее время силумины, являющиеся алюминиевыми сплавами, наиболее широко используются в машиностроении, строительных конструкциях и других отраслях промышленности. Применение силуминов часто ограничено из-за наличия в них крупнокристаллических структур, таких как дендриты α-Al, игольчатые кристаллы эвтектического Si и интерметаллидных фаз. Проведен значительный объем работ по изучению влияния различных добавок и их взаимосвязи с микроструктурой и механическими свойствами в Fe-содержащих интерметаллидных фазах (Al–Si–Fe и Al–Si–Fe–Mn). Однако исследование влияния различных добавок на морфо

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23

Kim, Junghwan, Kihwan Kwon, Kwanghyun Kim, Seungmin Han, Patrick Joohyun Kim, and Junghyun Choi. "Size Effect of a Piezoelectric Material as a Separator Coating Layer for Suppressing Dendritic Li Growth in Li Metal Batteries." Nanomaterials 13, no. 1 (2022): 90. http://dx.doi.org/10.3390/nano13010090.

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Li metal has been intensively investigated as a next-generation rechargeable battery anode. However, its practical application as the anode material is hindered by the deposition of dendritic Li. To suppress dendritic Li growth, introducing a modified separator is considered an effective strategy since it promotes a uniform Li ion flux and strengthens thermal and mechanical stability. Herein, we present a strategy for the surface modification of separator, which involves coating the separator with a piezoelectric material (PM). The PM-coated separator shows higher thermal resistance than the p

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Kim, Artem Eduardovich, Ludmila Jurievna Dobosh, and Valeri Mikhailovich Golod. "Filtration Permeability of Dendritic Structure in Condition of Diffusion-Capillary Coalescence of Secondary Side Branches." Key Engineering Materials 822 (September 2019): 23–29. http://dx.doi.org/10.4028/www.scientific.net/kem.822.23.

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The problem state of computer analysis of shrinkage defects in castings is analysed based on a review of theoretical and experimental studies the filtration permeability of solidifying alloys. It is shown that the use of the dimensionless permeability coefficient and its modification by introducing various corrections to the Karman-Kozeni equation, obtained for the stationary morphology of non-intersecting filtration channels, is inapplicable for the conditions of continuous change of their geometry during formation of dendrite structure. A computer model of the permeability for the mesoscale

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Sunaina, Chaurasiya. "Dendrimer as drug delivery tool." Abstracts of International Conferences & Meetings (AICM) 1, no. 4 (2021): 14. https://doi.org/10.5281/zenodo.5149897.

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<strong>Introduction: </strong>Dendrimers, are the three-dimensional, hyperbranched globular novel nano-polymeric system. The physiochemical characteristic of dendrimers as nanoscopic size, high degree of branching, aqueous solubility, biocompatibility, and great versatility structural modification attract the attention of researchers to apply as a platform for the transport of bioactive molecules and enhances the solubility of hydrophobic active drugs. In addition, the availability of multiple functional groups at the periphery and cavities in the interior and the control over the dendrimers&

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Janaszewska, Lazniewska, Trzepiński, Marcinkowska, and Klajnert-Maculewicz. "Cytotoxicity of Dendrimers." Biomolecules 9, no. 8 (2019): 330. http://dx.doi.org/10.3390/biom9080330.

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Drug delivery systems are molecular platforms in which an active compound is packed into or loaded on a biocompatible nanoparticle. Such a solution improves the activity of the applied drug or decreases its side effects. Dendrimers are promising molecular platforms for drug delivery due to their unique properties. These macromolecules are known for their defined size, shape, and molecular weight, as well as their monodispersity, the presence of the void space, tailorable structure, internalization by cells, selectivity toward cells and intracellular components, protection of guest molecules, a

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Muslimov, Ilham Aliagaevich, Volker Nimmrich, Alejandro Ivan Hernandez, Andrew Tcherepanov, Todd Charlton Sacktor та Henri Tiedge. "Dendritic Transport and Localization of Protein Kinase Mζ mRNA". Journal of Biological Chemistry 279, № 50 (2004): 52613–22. http://dx.doi.org/10.1074/jbc.m409240200.

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Protein kinase Mζ (PKMζ) is an atypical protein kinase C isoform that has been implicated in the protein synthesis-dependent maintenance of long term potentiation and memory storage in the brain. Synapse-associated kinases are uniquely positioned to promote enduring consolidation of structural and functional modifications at the synapse, provided that kinase mRNA is available on site for local input-specific translation. We now report that the mRNA encoding PKMζ is rapidly transported and specifically localized to synaptodendritic neuronal domains. Transport of PKMζ mRNA is specified by two ci

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Kim, Youngkwon, Beum Jin Park, Ji-Sang Yu, and Kyusoon Shin. "Polysiloxane-Coated PI Nonwoven Separators with Higher Thermal and Electrochemical Stability for Lithium Ion Battery Application." ECS Meeting Abstracts MA2023-02, no. 2 (2023): 336. http://dx.doi.org/10.1149/ma2023-022336mtgabs.

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Polyolefin separators are widely used for most of commercial application owing to their excellent mechanical properties, electrical insulation, and internal porous structures. The raw polyolefin materials have economic viability and possess facile mechanical extension suitable for processing as a film [1]. However, the inherent thermal property of polyolefin inevitably results in the severe thermal deformation of the separators upon the elevation of LiB temperature that has been pointed out as a major cause of fire in LiBs with the possibility of short circuits caused by lithium dendrites [2].

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Gao, Xiujie, Fei Wang, Yibo Xing, et al. "Modification of Cu-Based Current Collectors and Their Application in High-Performance Zn Metal Anode: A Review." Coatings 14, no. 10 (2024): 1300. http://dx.doi.org/10.3390/coatings14101300.

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Zinc-based batteries (ZBBs) have proven to be tremendously plausible for large-scale electrochemical energy storage applications due to their merits of desirable safety, low-cost, and low environmental impact. Nevertheless, the zinc metal anodes in ZBBs still suffer from many issues, including dendrite growth, hydrogen evolution reactions (HERs), corrosion, passivation, and other types of undesirable side reactions, which severely hinder practical application. The modification of Cu-based current collectors (CCs) has proven to be an efficient method to regulate zinc deposition and prevent dend

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SZYMAŃSKI, PAWEŁ, MAGDALENA MARKOWICZ, and ELŻBIETA MIKICIUK-OLASIK. "NANOTECHNOLOGY IN PHARMACEUTICAL AND BIOMEDICAL APPLICATIONS: DENDRIMERS." Nano 06, no. 06 (2011): 509–39. http://dx.doi.org/10.1142/s1793292011002871.

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Nanotechnology, a separate field of knowledge since 1980s, involves utilization of nanomaterials not only in electronics and catalysis, but also in biomedical research including drug delivery, bioimaging, biomedical-diagnostics and tissue engineering. Multidisciplinary of this science has led to the development of different areas of technology and might contribute to innovations that will, as a final consequence, help humanity. Dendrimers are large and complex molecules that are characterized by well-defined nanoscale architecture, monodispersity and structural versatility. These highly intere

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Teruel-Juanes, R., B. Pascual-Jose, R. Graf, J. Reina, M. Giamberini, and A. Ribes-Greus. "Effect of Dendritic Side Groups on the Mobility of Modified Poly(epichlorohydrin) Copolymers." Polymers 13, no. 12 (2021): 1961. http://dx.doi.org/10.3390/polym13121961.

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The macromolecular dynamics of dendronized copolymer membranes (PECHs), obtained by chemical modification of poly(epichlorohydrin) with the dendron 3,4,5-tris[4-(n-dodecan-1-yloxy)benzyloxy] benzoate, was investigated. In response to a thermal treatment during membrane preparation, these copolymers show an ability to change their shape, achieve orientation, and slightly crystallize, which was also observed by CP-MAS NMR, XRD, and DSC. The phenomenon was deeply analyzed by dielectric thermal analysis. The dielectric spectra show the influence of several factors such as the number of dendritic s

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Chang, Shu Jui, Hsi Chen, and Nae-Lih (Nick) Wu. "Industry-Level Safety Enhancement of High-Energy Li-Ion Batteries Via Material-Level Surface Modification." ECS Meeting Abstracts MA2024-02, no. 7 (2024): 807. https://doi.org/10.1149/ma2024-027807mtgabs.

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Developing high-energy-density lithium-ion batteries (LIBs) to meet the needs of electric vehicles (EVs) and sustainable energy storage applications brings more safety issues simultaneously. On the anode side, graphite has the advantages of a high abundance and low lithiation electrochemical potential, which reduces the cost of LIBs and brings higher energy. However, graphite is vulnerable to the plating of metallic Li dendrite, which could easily arise from over-lithiation due to heterogeneity in the anode electrode or fast charging. Li dendritic deposits could penetrate through the separator

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Fracchia, Elisa, Federico Simone Gobber, and Mario Rosso. "Effect of Alloying Elements on the Sr Modification of Al-Si Cast Alloys." Metals 11, no. 2 (2021): 342. http://dx.doi.org/10.3390/met11020342.

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Strontium-based modifier alloys are commonly adopted to modify the eutectic silicon in aluminum-silicon casting alloys by changing the silicon shape from an acicular to a spherical form. Usually, the modifier alloy necessary to properly change the silicon shape depends on the silicon content, but the alloying elements’ content may have an influence. The AlSr10 master alloy’s modifying effect was studied on four Al-Si alloys through the characterization of microstructural and mechanical properties (micro-hardness and impact tests). The experimental results obtained on gravity cast samples highl

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Çolak, M., and D. Dışpınar. "Taguchi Approach for Optimization of Parameters that Effect Grain Size of Cast A357 Alloy." Archives of Foundry Engineering 17, no. 4 (2017): 35–42. http://dx.doi.org/10.1515/afe-2017-0127.

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AbstractGrain refining and modification are common foundry practice for improving properties of cast Al-Si alloys. In general, these types of treatments provide better fluidity, decreased porosity, higher yield strength and ductility. However, in practice, there are still some discrepancies on the reproducibility of the results from grain refining and effect of the refiner’s additions. Several factors include the fading effect of grain refinement and modifiers, inhomogeneous dendritic structure and non-uniform eutectic modification. In this study, standard ALCAN test was used by considering Ta

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Lu, Yi, Shengping Wen, Wu Wei, et al. "The Synergistic Refinement and Modification of Al-7Si Alloys Caused by Trace Er and B." Metals 15, no. 4 (2025): 413. https://doi.org/10.3390/met15040413.

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In this investigation, it was found that the co-addition of Er and B causes both the modification and refinement of the Al-7Si alloy. The B element mainly forms a small amount of the AlB2 phase within the alloy, which can be used as a nucleation site for grains during casting, so the addition of B can significantly reduce the grain size of the Al-7Si alloy. However, the number density of AlB2 phase is too low, so its effect on improving the eutectic Si size and reducing the secondary dendrite arm spacing (SDAS) is not significant. The addition of 0.1 wt% Er can form a large amount of Al3Er pha

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Nguyen, Bach, Nguyen Tran, et al. "Partial Surface Modification of Low Generation Polyamidoamine Dendrimers: Gaining Insight into their Potential for Improved Carboplatin Delivery." Biomolecules 9, no. 6 (2019): 214. http://dx.doi.org/10.3390/biom9060214.

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Carboplatin (CAR) is a second generation platinum-based compound emerging as one of the most widely used anticancer drugs to treat a variety of tumors. In an attempt to address its dose-limiting toxicity and fast renal clearance, several delivery systems (DDSs) have been developed for CAR. However, unsuitable size range and low loading capacity may limit their potential applications. In this study, PAMAM G3.0 dendrimer was prepared and partially surface modified with methoxypolyethylene glycol (mPEG) for the delivery of CAR. The CAR/PAMAM G3.0@mPEG was successfully obtained with a desirable si

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Sim, Hui-Tae, Myungkeun Oh, Ye-Eun Park, et al. "Li Metal Surface Modification to Stabilize Lithium-Argyrodite Interface for Sulfide-Based All-Solid-State Lithium Metal Batteries." ECS Meeting Abstracts MA2024-02, no. 8 (2024): 1214. https://doi.org/10.1149/ma2024-0281214mtgabs.

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Since the commercialization of lithium-ion batteries, they have faced limitation in safety and energy density. All-solid-state lithium metal batteries (ASSLMBs) can be a solution to address these issues. Among many types of solid electrolytes, sulfide-based solid electrolytes have been attracted great attention because of their high ion conductivity and ductile property. However, many researchers have reported that the interface between lithium metal and solid electrolyte is highly unstable. The lithium dendrite growth can be also occurred in the ASSLMBs by voids, cracks, grain boundaries in s

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Rzychoń, Tomasz, and Radosław Janik. "The Influence of Calcium on the Primary Mg₂Si Phase in the Hypereutectic Mg-Si Alloys." Solid State Phenomena 229 (April 2015): 71–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.229.71.

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The microstructure of Mg-5Si alloy consists of the primary coarse Mg2Si phase, α-Mg solid solution and eutectic α-Mg + Mg2Si, in which eutectic Mg2Si phase solidifies in the form of Chinese script particles. When 0.2 wt.% of Ca was added to the Mg-5Si alloy the size of primary Mg2Si phase remained unchanged. The modification effect of calcium on the primary Mg2Si phase was effective only in the Mg-5Si-0.5Ca alloy. The morphology of the primary Mg2Si phase is changed from the coarse dendrite shape to polyhedral shape and the size of primary crystals is significantly reduced. The addition of 0.6

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Prіgunova, А. G., Y. A. Zhydkov, V. D. Babiuk, L. K. Shenevidko, and T. G. Tsir. "Management the structure and properties of cast aluminum alloy AM4.5Kd (VAL10) by modification with fine crystalline ligatures." Metaloznavstvo ta obrobka metalìv 103, no. 3 (2022): 3–17. http://dx.doi.org/10.15407/mom2022.03.003.

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To management the structure, mechanical and operational properties of the high-strength cast aluminum alloy АМ4.5Кд (ВАЛ10), the work uses a modification method based on the principle of structural inheritance, using rapidly cooled (Vcool. ≥ 10^5 °С/s) fine-crystal ligatures AlTi5 and AlZr10, and as well as ligatures of the chemical composition of the base alloy with nanoscale size of intermetallics and Alα crystals. Studies have shown that the introduction of fine-crystalline additives into the melt leads to a transition from a dendritic to a non-dendritic structure, a significant decrease in

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Zenze, Mkhuseli, Aliscia Daniels, and Moganavelli Singh. "Dendrimers as Modifiers of Inorganic Nanoparticles for Therapeutic Delivery in Cancer." Pharmaceutics 15, no. 2 (2023): 398. http://dx.doi.org/10.3390/pharmaceutics15020398.

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The formulation of nanoscale systems with well-defined sizes and shapes is of great interest in applications such as drug and gene delivery, diagnostics and imaging. Dendrimers are polymers that have attracted interest due to their size, shape, branching length, amine density, and surface functionalities. These unique characteristics of dendrimers set them apart from other polymers, their ability to modify nanoparticles (NPs) for biomedical applications. Dendrimers are spherical with multiple layers over their central core, each representing a generation. Their amphiphilic nature and hollow st

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Chen, Diantao, Jiawei Zhang, Qian Liu, Fan Wang, Xin Liu, and Minghua Chen. "The Introduction of a BaTiO3 Polarized Coating as an Interface Modification Strategy for Zinc-Ion Batteries: A Theoretical Study." International Journal of Molecular Sciences 25, no. 20 (2024): 11172. http://dx.doi.org/10.3390/ijms252011172.

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Aqueous zinc-ion batteries (AZIBs) have become a promising and cost-effective alternative to lithium-ion batteries due to their low cost, high energy, and high safety. However, dendrite growth, hydrogen evolution reactions (HERs), and corrosion significantly restrict the performance and scalability of AZIBs. We propose the introduction of a BaTiO3 (BTO) piezoelectric polarized coating as an interface modification strategy for ZIBs. The low surface energy of the BTO (110) crystal plane ensures its thermodynamic preference during crystal growth in experimental processes and exhibits very low rea

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Song, Wenru, Hwai-Loong Kong, Heather Carpenter, et al. "Dendritic Cells Genetically Modified with an Adenovirus Vector Encoding the cDNA for a Model Antigen Induce Protective and Therapeutic Antitumor Immunity." Journal of Experimental Medicine 186, no. 8 (1997): 1247–56. http://dx.doi.org/10.1084/jem.186.8.1247.

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Dendritic cells (DCs) are potent antigen-presenting cells that play a critical role in the initiation of antitumor immune responses. In this study, we show that genetic modifications of a murine epidermis-derived DC line and primary bone marrow–derived DCs to express a model antigen β-galactosidase (βgal) can be achieved through the use of a replication-deficient, recombinant adenovirus vector, and that the modified DCs are capable of eliciting antigen-specific, MHC-restricted CTL responses. Importantly, using a murine metastatic lung tumor model with syngeneic colon carcinoma cells expressing

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Li, Dongdong, Yuan Gao, Chuan Xie, and Zijian Zheng. "Au-coated carbon fabric as Janus current collector for dendrite-free flexible lithium metal anode and battery." Applied Physics Reviews 9, no. 1 (2022): 011424. http://dx.doi.org/10.1063/5.0083830.

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Composite lithium metal anodes with three-dimensional (3D) conductive fabric present great potential to be used in high-energy-density flexible batteries for next-generation wearable electronics. However, lithium dendrites at the top of the fabric anode increase the risk of separator piercing and, therefore, cause a high possibility of short circuits, especially when undergoing large mechanical deformation. To ensure the safe application of the flexible lithium metal batteries, we herein propose a 3D Janus current collector by a simple modification of the bottom side of carbon fabric (CF) with

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Wang, Yixian, and David Mitlin. "Mechanical Milling - Induced Microstructure Changes in Argyrodite Lpscl Solid-State Electrolyte Critically Affect Electrochemical Stability." ECS Meeting Abstracts MA2024-02, no. 8 (2024): 1241. https://doi.org/10.1149/ma2024-0281241mtgabs.

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In the early stages of sulfide solid-state electrolyte (SSE) research, sulfides like Li6PS5Cl (LPSCl) were primarily synthesized in laboratories using fine precursors such as Li2S, LiCl, and P2S5, employing meticulous synthetic procedures involving milling and sintering. This approach resulted in grams of as-synthesized SSE materials with a uniform particle size distribution and well-controlled morphology. Consequently, large-scale synthesis methods for LPSCl SSE have been developed, leading to the availability of commercial LPSCl SSE. Nonetheless, compared to lab-scale synthesis, commercial p

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Tao, Jin. "Study of Modification Mechanism of Ultrafine Silica Modified by PAMAM." Applied Mechanics and Materials 217-219 (November 2012): 252–55. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.252.

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Ultrafine silicon dioxide were modified by -NH2-teminated poly(amido-amine) (PAMAM) dendrimers to improve their dispersibility in the coatings. The modification mechanism was studied through density functional theory (DFT) in the gas phase. Virous initial configurations of ion bound to PAMAM were established to investigate the structures and the energetics of the complexes. Two stable conformers are found: types A ( is bound to the amine site) and C ( is bound to the amide site). Types A and C indicate the chemical bond formation of Si-N and Si-O, respectively.

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Gao, Zhi Guo. "Numerical Analysis of Stray Grain Formation during Laser Welding Nickel-Based Single-Crystal Superalloy Part II: Multicomponent Dendrite Growth." Materials Science Forum 1033 (June 2021): 31–39. http://dx.doi.org/10.4028/www.scientific.net/msf.1033.31.

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Multicomponent dendrite growth is theoretically predicted to optimize solidification cracking susceptibility during ternary Ni-Cr-Al nickel-based single-crystal superalloy weld pool solidification. The distribution of dendrite trunk spacing along the weld pool solidification interface is clearly symmetrical about the weld pool centerline in beneficial (001)/[100] welding configuration. The distribution of dendrite trunk spacing along the weld pool solidification interface is crystallography-dependent asymmetrical from bottom to top surface of the weld pool in detrimental (001)/[110] welding co

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Gao, Yue, Xiao Sang, Yifan Chen, et al. "Polydopamine modification electrospun polyacrylonitrile fibrous membrane with decreased pore size and dendrite mitigation for lithium ion battery." Journal of Materials Science 55, no. 8 (2019): 3549–60. http://dx.doi.org/10.1007/s10853-019-04218-9.

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Rajković, Nemanja, Bojana Krstonošić, and Nebojša Milošević. "Box-Counting Method of 2D Neuronal Image: Method Modification and Quantitative Analysis Demonstrated on Images from the Monkey and Human Brain." Computational and Mathematical Methods in Medicine 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/8967902.

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This study calls attention to the difference between traditional box-counting method and its modification. The appropriate scaling factor, influence on image size and resolution, and image rotation, as well as different image presentation, are showed on the sample of asymmetrical neurons from the monkey dentate nucleus. The standard BC method and its modification were evaluated on the sample of 2D neuronal images from the human neostriatum. In addition, three box dimensions (which estimate the space-filling property, the shape, complexity, and the irregularity of dendritic tree) were used to e

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Cho, Hoon, Byoung Soo Lee, and Hyung Ho Jo. "Modification of A3003 Alloy for Development of High Toughness Al Alloy Tube." Materials Science Forum 546-549 (May 2007): 615–18. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.615.

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The strength of aluminum alloys was improved by a severe deformation process while the decrease of elongation leads to the defect. Modification of A3003 alloy was attempted in order to develop a high strength and high formability Al alloy tube for the application of air-conditioning systems in transportation, such as passenger planes and automobiles. An A3003 alloy was modified by Ti addition, grain refiner. As a result of modification, the modified A3003 alloy was able to suitably satisfy the mechanical strength requirements, including elongation. Grain size and secondary dendrite arm spacing

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Han, Ruihui, Dewen Zhang, Jie Sheng, Guangcheng Zhu, Ziheng Wang, and Deyang Dong. "Characterization of LDPE and SiO₂/LDPE AC Dendritic Growth after Tensile Stressing." Journal of Physics: Conference Series 3008, no. 1 (2025): 012040. https://doi.org/10.1088/1742-6596/3008/1/012040.

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Abstract Large-length power cables inevitably generate residual mechanical stress in the insulation layer during the manufacturing and laying process, especially during the production of factory joints. This paper addresses the AC dendrite initiation, growth influence, mechanism of action, and improvement mechanism of low-density polyethylene (LDPE) and SiO2/LDPE after the action of tensile stress. The crystalline morphology was observed by scanning electron microscope (SEM), and the results showed that the unstretched LDPE has an obvious spherical crystal structure and the diameter of the sph

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