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Статті в журналах з теми "Amorphous modification"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Velev, Valentin. "THERMO - MECHANICAL MODIFICATION OF AMORPHOUS POLYESTER FIBRES: I. DEFORMATION BEHAVIOUR." Journal scientific and applied research 4, no. 1 (2013): 223–28. http://dx.doi.org/10.46687/jsar.v4i1.101.

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The deformation behaviour of as-spun amorphous poly (ethylene terephthalate) (PET) yarns subjected to simultaneous thermal and mechanical treatments has been studied. The samples heat mechanical treatments were realized using constructed and produced in the author’s laboratory device. Thermal deformation experiments were carried out on conditions of linear samples heating from room temperature up to 200 0C while they were subjected to a well-defined constant tensile force. It was observed very interesting and seemingly strange dependence of the final fibre length from the values of the applied

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2

Velev, Valentin, Anton Popov, Pencho Kyurkchiev, Lyubomira Veleva та Rusalia Mateva. "THERMO-MECHANICALLY MODIFICATION OF AMORPHOUS POLYESTER FIBRES: ІІ. CALORIMETRIC INVESTIGATIONS". Journal scientific and applied research 4, № 1 (2013): 229–34. http://dx.doi.org/10.46687/jsar.v4i1.102.

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The present work is devoted to the investigation of the structure developments in as-spun amorphous poly (ethylene terephthalate) (PET) occurred as a result of heat mechanical treatments. The deformation behavior of as-spun amorphous poly (ethylene terephthalate) (PET) yarns subjected to simultaneous thermal and mechanical treatments has been studied. It was found that the applied tensile force simultaneously with the linear heating of the studied PET yarns strongly affects the samples deformation behaviour. Differential scanning calorimetry (DSC) has been used to study the structural rearrang

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3

Darusman, Fitrianti, Iyan Sopyan, Nadya Azzahra, and Taofik Rusdiana. "The solid-state modification for solubility enhancement of practically insoluble glimepiride: A systematic review." Journal of Pharmacy & Pharmacognosy Research 13, no. 2 (2025): 497–512. http://dx.doi.org/10.56499/jppres24.2101_13.2.497.

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Context: Solubility is a crucial physicochemical property of pharmaceuticals that directly influences the absorption and bioavailability of drugs within the human body. Glimepiride, an oral anti-diabetic agent included in the Biopharmaceutics Classification System (BCS) class II, is practically insoluble in water. Various solid-state modification techniques have been implemented to improve the solubility of glimepiride, namely by the formation of co-crystals, co-amorphous, inclusion complexes, and solid dispersions. Aims: To systematically review the enhancement of glimepiride solubility after

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4

Hertsyk, О. М., Yu O. Kulyk, S. A. Korniy, V. K. Nosenko, N. L. Pаndiak, and M. S. Tashak. "Low-temperature modification of cobalt amorphous alloys." Physicochemical Mechanics of Materials 61, no. 2 (2025): 57–63. https://doi.org/10.15407/pcmm2025.02.057.

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High-temperature modification (T = 77 K) of strip-like Co72Fe5Si11B12, Co73,6Fe3,2Mn3,2Si5B15 and Co73,6(Fe, Ni, Mo, Mn)5,7(Si0,2B0,8)21 amorphous alloys was performed for the first time. Corrosion resistance of such modified strips in 0.15 M aqueous solution of NaCl was evaluated by different physicochemical methods. It was established that as a result of low-temperature processing some change in the morphology and elemental composition, as well as the orderliness of the structure of cobalt amorphous alloys occurs, which leads to a change in the electrochemical parameters. The possibility of

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5

Kozyukhin, Sergey A., Petr I. Lazarenko, Yuri V. Vorobyov, et al. "Laser-induced modification of amorphous GST225 phase change materials." Matériaux & Techniques 107, no. 3 (2019): 307. http://dx.doi.org/10.1051/mattech/2019008.

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In this paper, we have studied the crystallization behavior of amorphous GST225 thin films upon irradiation with nanosecond laser pulses. Crystalline and melt-quenched amorphous regions were produced by exposure to laser single or multipulses, and were characterized by the optical microscopy and by the micro-Raman spectroscopy. Transition region between the amorphous and crystalline parts of the laser-modified area was investigated by atomic force microscopy. Using irradiation by single laser pulses with varying fluence, it was verified that crystallization was possible if the fluence is more

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6

Iqbal, Muhammad, J. I. Akhter, A. Qayyum, Y. Javed, M. Rafiq, and A. A. Khuram. "Surface Modification and Characterization of Bulk Amorphous Materials." Key Engineering Materials 510-511 (May 2012): 43–50. http://dx.doi.org/10.4028/www.scientific.net/kem.510-511.43.

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Bulk metallic glasses (BMGs) are well known for their promising properties. Surface properties can be further improved by using certain techniques such as electron beam melting (EBM), laser beam melting (LBM), ion irradiation, ion implantation and neutron irradiation. BMGs especially Zr-based BMGs have numerous applications as structural materials. In this manuscript, the results are presented on microstructural investigations and phase formations in Zr-based BMGs modified by using above mentioned techniques. Microstructure was studied by scanning electron microscopy (SEM). Phase analysis was

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7

HERTSYK, Оksana, Myroslava KOVBUZ, and Mariya LOPACHAK. "CHEMICAL MODIFICATION OF THE AMORPHOUS METALLIC ELECTRODES." Proceedings of the Shevchenko Scientific Society. Series Сhemical Sciences 2021, no. 66 (2021): 57–67. http://dx.doi.org/10.37827/ntsh.chem.2021.66.057.

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8

Silva, S. R. P., J. Robertson, G. A. J. Amaratunga, et al. "Nitrogen modification of hydrogenated amorphous carbon films." Journal of Applied Physics 81, no. 6 (1997): 2626–34. http://dx.doi.org/10.1063/1.363927.

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9

Corcoran, J. C., and S. A. Lee. "Pressure-Induced Modification of Hydrogenated Amorphous Carbon." Spectroscopy Letters 26, no. 4 (1993): 565–74. http://dx.doi.org/10.1080/00387019308011554.

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10

ROZANSKI, ARTUR, and ANDRZEJ GALESKI. "Modification of amorphous phase of semicrystalline polymers." Polimery 57, no. 6 (2012): 433–40. http://dx.doi.org/10.14314/polimery.2012.433.

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11

Leezenberg, Pieter B., William H. Johnston, and George W. Tyndall. "Chemical modification of sputtered amorphous-carbon surfaces." Journal of Applied Physics 89, no. 6 (2001): 3498–507. http://dx.doi.org/10.1063/1.1338989.

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12

Luksha, Oleg, Valentin Ivanitsky, and Sergey Kolinko. "Structural modification of AsSe amorphous films." Journal of Non-Crystalline Solids 136, no. 1-2 (1991): 43–52. http://dx.doi.org/10.1016/0022-3093(91)90117-o.

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13

HERTSYK, Oksana, Victor NOSENKO, Myroslava KOVBUZ, Natalia PANDIAK, and Myroslava TASHAK. "ELECTROCHEMICAL PARAMETERS OF A MODIFIED AMORPHOUS ALLOY IN AQUEOUS SOLUTIONS OF DIFFERENT NATURES." Proceedings of the Shevchenko Scientific Society. Series Сhemical Sciences 2024, no. 75 (2024): 17–27. http://dx.doi.org/10.37827/ntsh.chem.2024.75.017.

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Amorphous metal alloys (AMА) have high corrosion resistance, which can be significantly higher than that of stainless steels. Since ferromagnetic amorphous Fe-based alloys are widely used as soft magnetic materials, their operation is associated with the use of external magnetic fields. Such external influences can change, in particular, the corrosion resistance of amorphous materials. In addition to permanent, amorphous materials can be under the influence of variable magnetic fields. Preliminary exposure in magnetic fields, in particular, alternating ones, can be used to modify AMА. In this

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14

Rubish, V. M., M. M. Pop, R. P. Pisak, et al. "Structural Studies of Mercury-Modified Amorphous Films of the Selenium-Antimony System." Physics and Chemistry of Solid State 25, no. 1 (2024): 164–69. http://dx.doi.org/10.15330/pcss.25.1.164-169.

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The structure of mercury-modified amorphous films of the Se-Sb system was studied using the methods of X-ray diffractometry and Raman spectroscopy. It was ascertained that the structure of the phase that formed in the amorphous matrix of the films after their exposure in mercury vapor corresponds to the structure of crystalline mercury selenide in cubic modification. The structure of nominally pure and mercury-modified amorphous Se100Sbx films (x = 3, 5, 7, 9) was investigated using X-ray diffractometry and Raman spectroscopy. It is shown that the matrix of nominally pure films is built

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15

Tinchev, Savcho, Petranka Nikolova, Evgenia Valcheva, Yuliana Dyulgerska, and Elitsa Petrova. "Laser - induced modification of hydrogenated amorphous carbon films." Journal of Physics: Conference Series 253 (November 1, 2010): 012039. http://dx.doi.org/10.1088/1742-6596/253/1/012039.

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16

Tanaka, Hidekazu, and Masatoshi Chikazawa. "Modification of amorphous aluminum phosphate with alkyl phosphates." Materials Research Bulletin 35, no. 1 (2000): 75–84. http://dx.doi.org/10.1016/s0025-5408(00)00186-0.

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17

Yao, Suwei, Shuilin Zhao, Libin Ren, Hetong Guo, and M. Kowaka. "Surface modification of amorphous FeW alloy deposits." Surface and Coatings Technology 79, no. 1-3 (1996): 205–8. http://dx.doi.org/10.1016/0257-8972(95)02465-4.

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18

Quercia, G., P. Spiesz, G. Hüsken, and H. J. H. Brouwers. "SCC modification by use of amorphous nano-silica." Cement and Concrete Composites 45 (January 2014): 69–81. http://dx.doi.org/10.1016/j.cemconcomp.2013.09.001.

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19

Bhattacharya, Rabi S., A. K. Rai, J. S. Zabinski, and Neil T. McDevitt. "Ion beam modification of fullerene films and their frictional behavior." Journal of Materials Research 9, no. 7 (1994): 1615–18. http://dx.doi.org/10.1557/jmr.1994.1615.

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C60 films were deposited on a variety of substrates by thermal evaporation. The presence of C60 in the films was confirmed by Transmission Electron Microscopy and Raman spectroscopic analysis. The C60 films exhibited an average friction coefficient of 0.4–0.5. The films were irradiated with 2 MeV Ag+ and B+ ions at various doses. High energy ion bombardment created damage that resulted in partly crystalline to amorphous films, dependent on the mass and dose of ions. The amorphous films showed a friction coefficient of <0.1. Partly crystalline films showed a friction coefficient at the same

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20

Velev, Valentin, Anton Popov, Pencho Kyurkchiev, and Lyubomira Veleva. "THERMO-MECHANICAL MODIFICATION OF AMORPHOUS POLYESTER FIBRES: III. STRUCTURE INVESTIGATIONS USING WIDE ANGLE X-RAY SCATTERING." Journal scientific and applied research 4, no. 1 (2013): 235–40. http://dx.doi.org/10.46687/jsar.v4i1.103.

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Amorphous poly (ethylene terephthalate) (PET) yarns were used as precursor specimens. The aim of the present experiment is to investigate the heat mechanically induced structural changes in the studied samples. The thermal deformation experiments were carried out on conditions of linear samples heating from room temperature up to 2000C while they were subjected to a well-defined constant strain force. Using of wide angle X-ray scattering (WAXS) and differential scanning calorimetry (DSC) methods ware investigated the structural rearrangements in the studied samples caused by the fibers drawing

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21

Wang, Dawei, Runqing Liu, Song Wang, and Xin Ma. "Mechanical Properties of Ultra-High-Performance Concrete with Amorphous Alloy Fiber: Surface Modification by Silane Coupling Agent KH-550." Materials 17, no. 16 (2024): 4037. http://dx.doi.org/10.3390/ma17164037.

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Amorphous alloy fiber has the advantages of high tensile strength and high corrosion resistance compared with steel fiber, but its interfacial bonding with cement matrix is poor and requires surface modification treatment. In this study, the surface modification of amorphous alloy fiber was carried out by using silane coupling agent KH-550 solution, and its effect on the mechanical properties of ultra-high-performance concrete was investigated. The results showed that the amorphous alloy fibers modified with 15% concentration silane coupling agent KH-550 solution can effectively improve the me

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22

Iwaki, Masaya. "Ion Beam Modification of Carbon Materials." Solid State Phenomena 107 (October 2005): 107–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.107.107.

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A study has been made of surface properties of carbon materials modified by ion beams. Substrates used were natural diamonds, glass-like carbon plates and polymer sheets. Ion species were chemically-active elements such as C, N and O, inert gas elements such as He, Ne and Ar, and metallic elements such as Cr and Ti. It was found that diamond becomes electrically conductive in ion implanted layers, which are amorphous or graphite-like structures. Electrical conductivity depends on implanted species, doses and target temperatures. It was found that glass-like carbon consisting of graphite and di

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23

Li, Hexing, Weilin Dai, Chun Shen, Shiyao Zhou, and Jingfa Deng. "Modification on Ni-P Amorphous Catalyst with SiO2and Pd." Chemistry Letters 26, no. 2 (1997): 133–34. http://dx.doi.org/10.1246/cl.1997.133.

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24

Janik-Czachor, M., A. Szummer, A. Molnar, et al. "Electrochemical modification of Cu–Zr amorphous alloys for catalysts." Electrochimica Acta 45, no. 20 (2000): 3295–304. http://dx.doi.org/10.1016/s0013-4686(00)00439-4.

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25

Grigonis, A. "Modification of amorphous a-C:H films by laser irradiation." Lithuanian Journal of Physics 47, no. 3 (2007): 343–50. http://dx.doi.org/10.3952/lithjphys.47321.

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26

Popov, C., W. Kulisch, S. Bliznakov, et al. "Surface modification of nanocrystalline diamond/amorphous carbon composite films." Diamond and Related Materials 17, no. 7-10 (2008): 1229–34. http://dx.doi.org/10.1016/j.diamond.2008.01.078.

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27

Il'chishin, I. P., V. I. Mel'nik, K. I. Nelipovich, and M. T. Shpak. "Phosphorescence of X-modification and amorphous films of benzophenone." Journal of Applied Spectroscopy 55, no. 5 (1991): 1128–31. http://dx.doi.org/10.1007/bf00658409.

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28

Milenov, T. I., I. A. Avramova, A. Dikovska, et al. "Modification of graphene-like, hydrogenated amorphous, hydrogenated tetrahedral amorphous carbon and amorphous carbon thin films by UV-C light." Surfaces and Interfaces 24 (June 2021): 101073. http://dx.doi.org/10.1016/j.surfin.2021.101073.

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29

Chinnathambi, Subashchandrabose. "Dual Modification of Tau by Pseudophosphorylation and Glycation Does Not Enhance Amorphous Aggregation." Cellular Physiology and Biochemistry 58, no. 2 (2024): 182–92. http://dx.doi.org/10.33594/000000693.

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Background/Aims: The neurofibrillary tangles consisting of Tau protein are an important pathology in Alzheimer’s disease. The paired helical filaments of Tau form most of the NFTs. These PHFs of Tau are found to carry numerous post-translational modifications, which stabilize them and aid in aggregation. The mechanistic function of Tau is to bind and stabilize the axonal microtubules. Hyperphosphorylation of Tau causes it to compromise its physiological function and accumulate in the neurons in the form of aggregates. Such residue-specific phosphorylation has been studied by employing Tau pseu

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30

Kolesnikova, E. V., Alla A. Sitnikova, V. I. Sokolov, and M. V. Zamoryanskaya. "Modification of Silicon Oxide by High Energy Electron Beam." Solid State Phenomena 108-109 (December 2005): 729–34. http://dx.doi.org/10.4028/www.scientific.net/ssp.108-109.729.

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During interaction between thin film SiO2 and electron beam with high power density, amorphous silicon dioxide modifies. Silicon nanoclusters are formed in radiated area. Result of this interaction is formation of Si/SiO2 nanocomposite. We studied modified SiO2 by TEM, microdiffraction and cathodoluminescence.

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31

Tang, Bin, Longxue Gao, Junqing Liu, et al. "Surface modification of garnet with amorphous SnO2via atomic layer deposition." Journal of Materials Chemistry A 8, no. 35 (2020): 18087–93. http://dx.doi.org/10.1039/c9ta13347j.

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We sputter amorphous SnO<sub>2</sub> layer onto the surface of solid electrolytes via atomic layer deposition, which reduces interfacial resistance, prevents interface reactions with metallic lithium and provides high stability for long cycling.

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32

Исхаков, Р. С., С. В. Столяр, Л. А. Чеканова та И. Г. Важенина. "Спин-волновой резонанс в одномерных магнонных кристаллах, на примере мультислойных пленок Co-P". Физика твердого тела 62, № 10 (2020): 1658. http://dx.doi.org/10.21883/ftt.2020.10.49915.115.

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The CoP-based layered magnetic films, what is more the every layer has certain atomic and chemical structure, were studied by spin-resonance method. The covers were synthesized two type: magnonic crystals (amorphous Co(P)/fcc Co(P))N and gradient Co(P)-based films and they allow us to observe two different modification SWR spectrum. In one case it is SWR spectrum like Hn(n)~n2 when modification is result from created first stop-zone of a magnonic crystal. In the second case the dependence of resonance fields Hn of the spin-wave modes on mode number n has the form Hn(n)~n2/3. The thermal anneal

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33

Ciobanu, Roxana, Ilarion Mihăilă, Cătălin Borcia, and Gabriela Borcia. "Adhesion Properties and Stability of Polar Polymers Treated by Air Atmospheric Pressure Plasma." Polymers 16, no. 11 (2024): 1552. http://dx.doi.org/10.3390/polym16111552.

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This study continues the discussion on the surface modification of polymers using an atmospheric pressure plasma (APP) reactor in air. These results complement prior research focusing on nonpolar polymers. Polymers, such as polyethylene terephthalate, polyetheretherketone, and polymethyl methacrylate, containing structurally bonded oxygen are studied, representing a range of properties such as oxygen content, crystalline/amorphous structure, polarity, functionality, and aliphatic/aromatic structure. APP induces superior wetting properties on the hydrophilic polymer surfaces with rapid and unif

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34

Wei, B., K. Komvopoulos, and I. G. Brown. "Microstructure modification of amorphous carbon films by ion-implantation techniques." Journal of Materials Research 14, no. 5 (1999): 2181–90. http://dx.doi.org/10.1557/jmr.1999.0294.

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Microstructure modification of amorphous carbon films containing about 30 at.% hydrogen (a-CHx) and nonhydrogenated amorphous carbon (a-C) films was accomplished with a vacuum arc metal plasma implanter and a cathodic arc plasma system, respectively. The films were implanted with Si, Ti, Hf, W, and Al of ion doses approximately equal to 1 and 3 × 1016 ions/cm2 and mean ion kinetic energies in the range of 3–70 keV, depending on the implantation method. Simulation results demonstrated a profound effect of the size of implant species, ion dose, mean ion kinetic energy, and implantation processes

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35

Timoshchik, Olga A., Tatiana D. Batueva, Elena A. Belogurova, and Alexander G. Kasikov. "Adsorption of Vanadium (V) on Amorphous and Modified Silica." Water 16, no. 24 (2024): 3628. https://doi.org/10.3390/w16243628.

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In this work, we investigate V(V) sorption on amorphous and modified silica. Silicon dioxide was obtained from the metallurgical slag. The impact of modification on vanadium sorption was studied. The surface was modified with hydrazides (HDs) and dimethylhydrazides (DMHDs) of the tertiary carbonic Versatic acids CH3R1R2CC(O)OH of the C10–19 fractions. The optimal sorption conditions on the unmodified sorbent were pH 4, 1 h, and 40 °C. The sorption capacity of V(V) ions increased with surface modification. For modified sorbents, the range of action shifted to a more acidic area (2.0–3.0), where

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36

Prihatiningsih, Maria Christina, Chaidir Pratama, Noor Anis Kundari, et al. "Rifampicin adsorption and release study using Santa Barbara amorphous-16 modified Al (SBA-16-Al) for a drug delivery system." RSC Advances 14, no. 11 (2024): 7371–82. http://dx.doi.org/10.1039/d3ra08360h.

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37

Cui, Heng, Hang Li, Jiuding Liu, Yudong Zhang, Fangyi Cheng, and Jun Chen. "Surface modification of Li-rich manganese-based cathode materials by chemical etching." Inorganic Chemistry Frontiers 6, no. 7 (2019): 1694–700. http://dx.doi.org/10.1039/c9qi00333a.

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38

Gunderov, Dmitry, and Vasily Astanin. "Influence of HPT Deformation on the Structure and Properties of Amorphous Alloys." Metals 10, no. 3 (2020): 415. http://dx.doi.org/10.3390/met10030415.

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Recent studies showed that structural changes in amorphous alloys under high pressure torsion (HPT) are determined by their chemical composition and processing regimes. For example, HPT treatment of some amorphous alloys leads to their nanocrystallization; in other alloys, nanocrystallization was not observed, but structural transformations of the amorphous phase were revealed. HPT processing resulted in its modification by introducing interfaces due to the formation of shear bands. In this case, the alloys after HPT processing remained amorphous, but a cluster-type structure was formed. The o

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39

Siuzdak, Katarzyna, Jakub Wawrzyniak, Łukasz Haryński, Zuzanna Bielan, and Katarzyna Grochowska. "The Impact of Side-Selective Laser Tailoring of Titania Nanotubes on Changes in Photoelectrocatalytic Activity." Micromachines 14, no. 2 (2023): 274. http://dx.doi.org/10.3390/mi14020274.

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Over the last few decades, titanium(IV) oxide-based materials have gained particular attention due to their stability, corrosion resistance, photocatalytic activity under UV light, and possibilities for modification. Among various structures, TiO2 nanotubes (NTs) grown on Ti foil or glass substrates and obtained through a simple anodization process are widely used as photocatalysts or photoanodes. During the anodization process, the geometry of the nanotubes (length, distribution, diameter, wall thickness, etc.) is easily controlled, though the obtained samples are amorphous. Heat treatment is

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40

Muhammad, Fahmi Fariq. "Morphology Impact on the Absorption Behaviour of Post-Thermally Treated Tris(8-Hydroxyquinoline) Gallium Films." International Letters of Chemistry, Physics and Astronomy 58 (September 2015): 47–51. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.58.47.

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This work reports on the impact of surface morphology on the optical absorption of vacuum deposited tris (8-hydroxyquinoline) gallium (Gaq3) films. Morphological investigation was performed for films treated under nitrogen gas in the temperature range from 85 °C to 255 °C. The results of field emission scanning electron microscopy (FESEM) and x-ray diffraction (XRD) technique ascertained the formation of amorphous nanostructures. Considerable modification in the absorption behaviour of Gaq3 films was observed upon morphological changes. The results of these modifications were ascribed to the i

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Muhammad, Fahmi Fariq. "Morphology Impact on the Absorption Behaviour of Post-Thermally Treated Tris(8-Hydroxyquinoline) Gallium Films." International Letters of Chemistry, Physics and Astronomy 58 (September 2, 2015): 47–51. http://dx.doi.org/10.56431/p-ye29b0.

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Анотація:

This work reports on the impact of surface morphology on the optical absorption of vacuum deposited tris (8-hydroxyquinoline) gallium (Gaq3) films. Morphological investigation was performed for films treated under nitrogen gas in the temperature range from 85 °C to 255 °C. The results of field emission scanning electron microscopy (FESEM) and x-ray diffraction (XRD) technique ascertained the formation of amorphous nanostructures. Considerable modification in the absorption behaviour of Gaq3 films was observed upon morphological changes. The results of these modifications were ascribed to the i

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Kong, Won-Suk, Tae-Jun Ju, Jun-Hyo Park, Jae-Wook Lee, and Ho Gyu Yoon. "Modification of biaxially oriented polypropylene films using dicyclopentadiene based hydrogenated hydrocarbon resin." Journal of Polymer Engineering 35, no. 9 (2015): 859–66. http://dx.doi.org/10.1515/polyeng-2014-0264.

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Abstract The morphologies, crystalline structures, and thermal and rheological behaviors of isotactic polypropylene (iPP) blended with dicyclopentadiene based hydrogenated hydrocarbon resin (HCR) were investigated using scanning electron microscopy (SEM), wide-angle X-ray diffractometry, and differential scanning calorimetry in detail. Furthermore, the transparency, mechanical properties, and water vapor and oxygen permeability of biaxially oriented polypropylene films, fabricated from these iPP/HCR blends using a biaxial drawing machine, were examined. It was found that crystallinity varies w

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Slepičková Kasálková, Nikola Slepičková, Klaudia Hurtuková, Dominik Fajstavr, et al. "Carbon Transformation Induced by High Energy Excimer Treatment." Materials 15, no. 13 (2022): 4614. http://dx.doi.org/10.3390/ma15134614.

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The main aim of this study was to describe the treatment of carbon sheet with a high-energy excimer laser. The excimer modification changed the surface chemistry and morphology of carbon. The appearance of specific carbon forms and modifications have been detected due to exposure to laser beam fluencies up to 8 J.cm−2. High fluence optics was used for dramatic changes in the carbon layer with the possibility of Q-carbon formation; a specific amorphous carbon phase was detected with Raman spectroscopy. The changes in morphology were determined with atomic force microscopy and confirmed with sca

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Zabotnov, S. V., P. K. Kashkarov, A. V. Kolobov, and S. A. Kozyukhin. "Structural Transformations and Formation of Microstructures and Nanostructures in Thin Films of Chalcogenide Vitreous Semiconductors." Nanobiotechnology Reports 18, no. 6 (2023): 829–41. http://dx.doi.org/10.1134/s2635167623600542.

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Abstract Chalcogenide vitreous semiconductors (ChVSs) are of both fundamental and applied interest as materials in which reversible structural transformations within the amorphous phase and phase transitions to the crystalline state can be effectively implemented and various microstructures and nanostructures can be obtained as a result of external effects. One of the most promising methods for such ChVS modifications is the pulsed-laser-irradiation technique, which is a noncontact technology of local impact and makes it possible to change the structural, optical, and electrical properties of

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Stepina, Irina Vasilevna. "Change in Crystalline Structure of Cellulose Caused by Wood Preservation." Materials Science Forum 923 (May 2018): 51–55. http://dx.doi.org/10.4028/www.scientific.net/msf.923.51.

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Сhemical interaction of cellulose with reactive groups of four-coordinate boron-nitrogen compounds is an intercrystalline process proceeding without destruction of cellulose crystalline structure; probably, the modifier molecules react with easier accessible hydroxyl groups of the amorphous cellulose regions. The formation of B-O-C ether bonds between OH groups of modifiers and more reactive hydroxyl groups of amorphous parts of cellulose results in redistribution of hydrogen bonds and, as a consequence, to rectification of cellulose macromolecules. Thus, when cellulose is treated with composi

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Kuznetsova, I. I., O. K. Lebedeva, D. Yu Kultin, N. S. Perov, and L. M. Kustov. "Effect of surface microstructure for corrosion resistance and magnetic properties of an amorphous cobalt-based Co-Si-Fe-Cr-Al ALLOY." Доклады Российской академии наук. Химия, науки о материалах 514, no. 1 (2024): 50–58. http://dx.doi.org/10.31857/s2686953524010052.

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The surface of an amorphous cobalt-based alloy of nominal composition Co75Si15Fe5Cr4.5Al0.5 was modified by nanostructures at anodizing in an ionic liquid – bis(trifluoromethane sulfonyl)imide 1-butyl-3-methyl- imidazolium. The magnetic (saturation specific magnetization and coercive force) and corrosion (corrosion potential and resistance) characteristics of an amorphous alloy before and after electrochemical modification of the surface by nanostructures are compared. Modification of the alloy surface partially changes its magnetic properties. After corrosion tests, an increase in the value o

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Cao, Yue, Guorong Wang, Qingxiang Ma, and Zhiliang Jin. "An amorphous nickel boride-modified ZnxCd1−xS solid solution for enhanced photocatalytic hydrogen evolution." Dalton Transactions 49, no. 4 (2020): 1220–31. http://dx.doi.org/10.1039/c9dt04311j.

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Wang, Wen Yu, Xin Jin, Shuan Qing Hou, Yu Feng Zhang, and Xiao Xu Sha. "Effect of Acid Modification on the Properties of Potato Starch Pastes and Starch Film." Advanced Materials Research 287-290 (July 2011): 2648–51. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2648.

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The effect of acid modification using 1mol/L HCl on viscosity, thermal properties and mechanical properties of potato starch pastes and starch film were investigated. After acid modification, the surface of starch granules did not show more roughness and viscosity of starch pastes become lower. The results of DSC indicated that acid should act on amorphous region of starch firstly and would act on the crystallization region with the longer treatment time. In the very close viscosity scope, the mechanical properties of starch films were increased obviously after acid modification.

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Li, Xiang, and Xiaonan Dang. "Effect of Potassium Permanganate Modification on Plasticized Spinning Polyacrylonitrile Fibers with Different Diameters." Polymers 10, no. 12 (2018): 1330. http://dx.doi.org/10.3390/polym10121330.

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Plasticized spinning polyacrylonitrile (PAN) fibers with different diameters were chemically modified by potassium permanganate (KMnO4). The modification effects of different diameter fibers were studied for the first time. Differential scanning calorimetry (DSC) results show that, compared with the large diameter ones, small diameter modified fibers show lower cyclization starting temperature (Ti) and activation energy (E). Both kinds of fibers exhibit better modification effects compared with solution-spun fibers. For the small diameter fibers, chemical modification can occur at low treatmen

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Wang, Li Jun, Jie Qiong Li, Shan Hong Li, Guang Qiang Zhang, and Shu Lin Huang. "Application of Amorphous Alloy in the New Energy-Efficient Electrical Motor." Applied Mechanics and Materials 48-49 (February 2011): 246–48. http://dx.doi.org/10.4028/www.scientific.net/amm.48-49.246.

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Application of amorphous alloy in highly efficient and power dense motors is increasingly being adopted, helping to solve global warming and energy-saving problems. Compared with conventional silicon steel materials, amorphous alloy shows faster flux reversal, lower magnetic loss and more versatile property modification, which result in the possible application in power electronics, telecommunication equipment, electronic article surveillance systems in the future. Some fundamental problems associated with materials processing and device fabrication technology remain to be further improved.

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