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Artykuły w czasopismach na temat „Dielectric polymers”

Autor: Grafiati

Data publikacji: 6 września 2023

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1

Dou, Lvye, Yuan-Hua Lin, and Ce-Wen Nan. "An Overview of Linear Dielectric Polymers and Their Nanocomposites for Energy Storage." Molecules 26, no. 20 (2021): 6148. http://dx.doi.org/10.3390/molecules26206148.

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As one of the most important energy storage devices, dielectric capacitors have attracted increasing attention because of their ultrahigh power density, which allows them to play a critical role in many high-power electrical systems. To date, four typical dielectric materials have been widely studied, including ferroelectrics, relaxor ferroelectrics, anti-ferroelectrics, and linear dielectrics. Among these materials, linear dielectric polymers are attractive due to their significant advantages in breakdown strength and efficiency. However, the practical application of linear dielectrics is usu

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2

Choi, Junhwan, and Hocheon Yoo. "Combination of Polymer Gate Dielectric and Two-Dimensional Semiconductor for Emerging Field-Effect Transistors." Polymers 15, no. 6 (2023): 1395. http://dx.doi.org/10.3390/polym15061395.

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Two-dimensional (2D) materials are considered attractive semiconducting layers for emerging field-effect transistors owing to their unique electronic and optoelectronic properties. Polymers have been utilized in combination with 2D semiconductors as gate dielectric layers in field-effect transistors (FETs). Despite their distinctive advantages, the applicability of polymer gate dielectric materials for 2D semiconductor FETs has rarely been discussed in a comprehensive manner. Therefore, this paper reviews recent progress relating to 2D semiconductor FETs based on a wide range of polymeric gate

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3

Liu, Di-Fan, Qi-Kun Feng, Yong-Xin Zhang, Shao-Long Zhong, and Zhi-Min Dang. "Prediction of high-temperature polymer dielectrics using a Bayesian molecular design model." Journal of Applied Physics 132, no. 1 (2022): 014901. http://dx.doi.org/10.1063/5.0094746.

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Machine learning has shown its great potential in the accelerated discovery of advanced materials in the field of computational molecular design. High-temperature polymer dielectrics are urgently required with the emerging applications of energy-storage dielectric film capacitors under high-temperature conditions. Here, we demonstrate the successful prediction of polymers with a high dielectric constant ( ɛ) and high glass transition temperature ( Tg) using a Bayesian molecular design model. The model is trained on a joint data set containing 382 computed ɛ values using density functional pert

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4

Yang, Zhijie, Dong Yue, Yuanhang Yao, et al. "Energy Storage Application of All-Organic Polymer Dielectrics: A Review." Polymers 14, no. 6 (2022): 1160. http://dx.doi.org/10.3390/polym14061160.

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With the wide application of energy storage equipment in modern electronic and electrical systems, developing polymer-based dielectric capacitors with high-power density and rapid charge and discharge capabilities has become important. However, there are significant challenges in synergistic optimization of conventional polymer-based composites, specifically in terms of their breakdown and dielectric properties. As the basis of dielectrics, all-organic polymers have become a research hotspot in recent years, showing broad development prospects in the fields of dielectric and energy storage. Th

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5

Katunin, Andrzej, and Katarzyna Krukiewicz. "Electrical percolation in composites of conducting polymers and dielectrics." Journal of Polymer Engineering 35, no. 8 (2015): 731–41. http://dx.doi.org/10.1515/polyeng-2014-0206.

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Abstract This article deals with the electrical conductivity of a composite of two polymers, one of which is a conducting polymer, whereas the second is a dielectric. The problem was formulated within the framework of electrical percolation, i.e., the percolation thresholds, which allow for a high electrical conductivity, is under investigation. For this purpose, a numerical model was developed, and its parameters were analyzed and discussed. Based on the determined thresholds, it was possible to evaluate the weight ratios of the conducting-dielectric polymers in a composite. The proposed appr

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6

Li, Rui, Jian Zhong Pei, Yan Wei Li, Xin Shi, and Qun Le Du. "Preparation, Morphology and Dielectric Properties of Polyamide-6/Poly(Vinylidene Fluoride) Blends." Advanced Materials Research 496 (March 2012): 263–67. http://dx.doi.org/10.4028/www.scientific.net/amr.496.263.

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A novel all-polymeric material with high dielectric constant (k) has been developed by blending poly (vinylidene fluoride) (PVDF) with polyamide-6 (PA6). The dependence of the dielectric properties on frequency and polymer volume fraction was investigated. When the volume fraction of PA6 is 20%, the dielectric property is better than others. The SEM investigations suggest that the enhanced dielectric behavior originates from significant interfacial interactions of polymer-polymer. The XRD demonstrate that the PA6 and PVDF affect the crystalline behavior of each component. Furthermore, the stab

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7

Закревский, В. А., В. А. Пахотин та Н. Т. Сударь. "Долговечность полимеров в переменном электрическом поле". Журнал технической физики 90, № 2 (2020): 251. http://dx.doi.org/10.21883/jtf.2020.02.48818.224-19.

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An explanation of the difference in the electrical properties of polymers in the DC and AC electric fields is proposed. Energy release during recombination of electrons and holes injected into a polymer dielectric is considered as a factor accelerating the processes of electric aging of these dielectrics in an AC field. It is shown that nonradiative relaxation of electron excited states causes breaks of bonds in macromolecules and formation of free radicals. Due to the lower ionization energy of free radicals (compared to the original molecules), the rate of charge accumulation in the polymer

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8

BIJWE, JAYASHREE, and NEELAM PHOUGAT. "Dielectric Properties of Iron Phthalocyanine Compounds." Journal of Porphyrins and Phthalocyanines 02, no. 03 (1998): 223–30. http://dx.doi.org/10.1002/(sici)1099-1409(199805/06)2:3<223::aid-jpp69>3.0.co;2-a.

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Monomeric and polymeric iron phthalocyanine compounds were synthesized and their dielectric properties were measured in the frequency range from 100 Hz to 10 MHz between 25 and 200 °C. The dielectric constant and dielectric loss showed strong frequency and temperature dependences. Interestingly, large dielectric constants were observed around 100 °C for both monomers and polymers. A dielectric constant as high as 5000 at 110 Hz was observed for the iron phthalocyanine polymer. The origin of the large dielectric constant in metallophthalocyanines is discussed.

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9

Ali, Amjad, Mirza Nadeem Ahmad, Tajamal Hussain, et al. "Materials Innovations in 2D-filler Reinforced Dielectric Polymer Composites." Materials Innovations 02, no. 02 (2022): 47–66. http://dx.doi.org/10.54738/mi.2022.2202.

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Polymer dielectric possess advantages of mechanical flexibility, low temperature processing, and cost. However, for practical applications dielectric constant of polymers is not high enough. To raise the dielectric constant, polymers are often composited with fillers of various morphologies (one-dimensional, two-dimensional, three-dimensional) and types (inorganic, organic, carbon, conductive, non-conductive). Recently discovered two-dimensional (2D) materials including graphene, transition metal dichalcogenides, MXenes, ferroelectric ceramics, etc. have been discovered. These materials have e

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10

Li, He, Yao Zhou, Yang Liu, Li Li, Yi Liu, and Qing Wang. "Dielectric polymers for high-temperature capacitive energy storage." Chemical Society Reviews 50, no. 11 (2021): 6369–400. http://dx.doi.org/10.1039/d0cs00765j.

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The growing demand for advanced electronics requires dielectrics operating at high temperatures. The development of high-temperature dielectric polymers is reviewed from the perspective of structure design, dielectric and capacitive performance.

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11

Закревский, В. А., В. А. Пахотин та Н. Т. Сударь. "Старение и разрушение (пробой) полимерных пленок в переменном электрическом поле". Физика твердого тела 61, № 10 (2019): 1953. http://dx.doi.org/10.21883/ftt.2019.10.48276.445.

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An explanation is proposed for the difference in the electrical strength properties of polymers in DC and AC fields. Energy release during recombination of electrons and holes injected into a polymer dielectric is considered as a factor accelerating the process of electrical aging of these dielectrics in AC field. It is shown that the nonradiative relaxation of electronic excited states, which causes bond breaks in macromolecules and the formation of free radicals, leads to the formation of deep electron traps in a polymer dielectric, as a result of which the ionization of macromolecules in th

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12

Chen, Xin, Qiyan Zhang, Ziyu Liu, Yifei Sun, and Q. M. Zhang. "High dielectric response in dilute nanocomposites via hierarchical tailored polymer nanostructures." Applied Physics Letters 120, no. 16 (2022): 162902. http://dx.doi.org/10.1063/5.0087495.

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This paper presents a hierarchically designed polymer nanocomposite approach in which nanofillers at ultralow volume loading generate large dielectric enhancement in blends of high temperature dielectric polymers with tailored nanostructures. We blend poly(1,4-phenylenen ether sulfone) (PES) with polymers, such as polyetherimide (PEI), that possess more coiled chain conformations to tailor polymer nano-morphologies. Making use of such blends as the matrix, dilute nanocomposites with 0.65 vol. % loading of alumina nanoparticles (20 nm size) generate a marked enhancement in dielectric performanc

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13

PRATAP, A., N. J. JOSHI, P. B. RAKSHIT, G. S. GREWAL, and V. SHRINET. "DIELECTRIC BEHAVIOR OF NANO BARIUM TITANATE FILLED POLYMERIC COMPOSITES." International Journal of Modern Physics: Conference Series 22 (January 2013): 1–10. http://dx.doi.org/10.1142/s2010194513009859.

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Rapid growth of electronic industry requires development of new materials that combine the high dielectric constant intrinsic to ferroelectric ceramic materials with easy processing characteristics of polymers. Ceramic-polymeric composites possess interesting properties for a variety of electronic applications including passive electronic devices. In fact, polymer-ceramic materials have drawn lot attention for use in microelectronic packaging, because they can give higher performance with lower cost, size and weight. In this work, attempts are made to prepare ceramic polymer composites followe

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14

Lu, T.-M., and J. A. Moore. "Vapor Deposition of Low-Dielectric-Constant Polymeric Thin Films." MRS Bulletin 22, no. 10 (1997): 28–31. http://dx.doi.org/10.1557/s0883769400034163.

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For devices with feature sizes below 0.18 μm, it is desirable to have materials with a dielectric constant below 2.5 as interlayer dielectrics. Polymeric materials are possible candidates. There are two main strategies to grow polymeric films. The most widely used method is the spin-on technique. The other method is by vapor deposition. Although vapor deposition is less common, it has several attractive features that look quite promising, especially when the wafer size becomes very large.There are several advantages to vapor-deposited polymers:(1) The deposition of the polymers is a dry proces

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15

Ahmed, Hameed M., and Shuja-Aldeen B. Aziz. "Dielectric Properties of Commercial non-Polar Polymers." Journal of Zankoy Sulaimani - Part A 11, no. 1 (2008): 1–8. http://dx.doi.org/10.17656/jzs.10175.

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16

Susarla, Sandhya, Thierry Tsafack, Peter Samora Owuor, et al. "High-K dielectric sulfur-selenium alloys." Science Advances 5, no. 5 (2019): eaau9785. http://dx.doi.org/10.1126/sciadv.aau9785.

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Upcoming advancements in flexible technology require mechanically compliant dielectric materials. Current dielectrics have either high dielectric constant, K (e.g., metal oxides) or good flexibility (e.g., polymers). Here, we achieve a golden mean of these properties and obtain a lightweight, viscoelastic, high-K dielectric material by combining two nonpolar, brittle constituents, namely, sulfur (S) and selenium (Se). This S-Se alloy retains polymer-like mechanical flexibility along with a dielectric strength (40 kV/mm) and a high dielectric constant (K = 74 at 1 MHz) similar to those of estab

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17

Albeltagi, Ahmed, Katherine Gallegos-Rosas, and Caterina Soldano. "High-k Fluoropolymers Dielectrics for Low-Bias Ambipolar Organic Light Emitting Transistors (OLETs)." Materials 14, no. 24 (2021): 7635. http://dx.doi.org/10.3390/ma14247635.

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Organic light emitting transistors (OLETs) combine, in the same device, the function of an electrical switch with the capability of generating light under appropriate bias conditions. In this work, we demonstrate how engineering the dielectric layer based on high-k polyvinylidene fluoride (PVDF)-based polymers can lead to a drastic reduction of device driving voltages and the improvement of its optoelectronic properties. We first investigated the morphology and the dielectric response of these polymer dielectrics in terms of polymer (P(VDF-TrFE) and P(VDF-TrFE-CFE)) and solvent content (cyclop

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18

Bonardd, Sebastián, Viviana Moreno-Serna, Galder Kortaberria, David Díaz Díaz, Angel Leiva, and César Saldías. "Dipolar Glass Polymers Containing Polarizable Groups as Dielectric Materials for Energy Storage Applications. A Minireview." Polymers 11, no. 2 (2019): 317. http://dx.doi.org/10.3390/polym11020317.

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Materials that have high dielectric constants, high energy densities and minimum dielectric losses are highly desirable for use in capacitor devices. In this sense, polymers and polymer blends have several advantages over inorganic and composite materials, such as their flexibilities, high breakdown strengths, and low dielectric losses. Moreover, the dielectric performance of a polymer depends strongly on its electronic, atomic, dipolar, ionic, and interfacial polarizations. For these reasons, chemical modification and the introduction of specific functional groups (e.g., F, CN and R−S(=O)2−R´

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19

Zhang, Xuan, Ziqi Wen, Hongxing Zhang, et al. "Dielectric Properties of Azo Polymers: Effect of the Push-Pull Azo Chromophores." International Journal of Polymer Science 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/4541937.

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The relationship between the structure and the dielectric properties of the azo polymers was studied. Four azo polymers were synthesized through the azo-coupling reaction between the same precursor (PAZ) and diazonium salts of 4-aminobenzoic acid ethyl ester, 4-aminobenzonitrile, 4-nitroaniline, and 2-amino-5-nitrothiazole, respectively. The precursor and azo polymers were characterized by 1H NMR, FT-IR, UV-vis, GPC, and DSC. The dielectric constant and dielectric loss of the samples were measured in the frequency range of 100 Hz–200 kHz. Due to the existence of the azo chromophores, the diele

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20

Wang, Chao, Guanghu He, Sheng Chen, Di Zhai, Hang Luo, and Dou Zhang. "Enhanced performance of all-organic sandwich structured dielectrics with linear dielectric and ferroelectric polymers." Journal of Materials Chemistry A 9, no. 13 (2021): 8674–84. http://dx.doi.org/10.1039/d1ta00974e.

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We develop advanced polymer capacitors for flexible electrostatic high temperature energy storage applications via designing all-organic sandwich structured films consisting of ferroelectric and linear dielectric polymers.

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21

Ganesh, S. D., M. N. K. Harish, B. J. Madhu, Husnasarvari Maqbool, K. V. Pai, and M. Y. Kariduraganavar. "Poly(Arylene Ether Sulfone)s with HEPES Pendants: Synthesis, Thermal, and Dielectric Studies." ISRN Polymer Science 2013 (May 29, 2013): 1–7. http://dx.doi.org/10.1155/2013/897034.

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Polyethersulfone with active carboxylic acid pendants was prepared from solution polymerization via nucleophilic displacement polycondensation reaction among 4,4′-dichlorodiphenyl sulfone (DCDPS) and 4,4′-bis(4-hydroxyphenyl) valeric acid (BHPA). The conditions necessary to synthesize and purify the polymer were investigated in some details. The synthesized polyethersulfone comprises sulfone and ether linkages in addition to reactive carboxylic acid functionality; this reactive carboxylic acid group was exploited to hold the HEPES moiety via ester linkage and is achieved by simple DCC coupling

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22

Butorin, Denis. "Automated control system to monitor dielectric losses in polymers." MATEC Web of Conferences 216 (2018): 02003. http://dx.doi.org/10.1051/matecconf/201821602003.

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The basic property of the processed polymers when it comes to high-frequency heat treatment is their dielectric losses. The purpose of the present study is elaboration of automated control system to monitor dielectric losses in polymers during heating. The technique developed in the given paper implies linear uniform heating of the studied material by contact method with the given velocity and when heating is off, periodic short-term action of high-frequency electric field on the polymer after each temperature growth of polymer per preset degree. The studies conducted in the automatic mode all

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23

Hacker, Nigel P. "Organic and Inorganic Spin-On Polymers for Low-Dielectric-Constant Applications." MRS Bulletin 22, no. 10 (1997): 33–38. http://dx.doi.org/10.1557/s0883769400034175.

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Low-dielectric-constant materials (k < 3.0) have the advantage of facilitating manufacture of higher performance integrated-circuit (IC) devices with minimal increases in chip size. The reduced capacitance given by these materials permits shrinkage of spacing between metal lines to below 0.25 μm and the ability to decrease the number of levels of metal in a device. The technologies being considered for low-k applications are chemical vapor deposition (CVD) or spin-on of polymeric materials. For both types of processes, there are methods and materials capable of giving k < 3.0 dielectric

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Endo, Kazuhiko. "Fluorinated Amorphous Carbon as a Low-Dielectric-Constant Interlayer Dielectric." MRS Bulletin 22, no. 10 (1997): 55–58. http://dx.doi.org/10.1557/s0883769400034217.

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Low-k organic polymers such as polytetrafluoroethylene (PTFE) are promising materials for use as interlayer dielectrics (ILD) because their dielectric constants are generally lower than those of inorganic materials. However poor adhesion with Si substrates, poor thermal stability, and production difficulties have hindered their use in microelectronics.On the other hand, plasma-enhanced chemical vapor deposition (PECVD) of polymer films (plasma polymerization) has many advantages that help to overcome these problems. Plasma-enhanced chemical vapor deposition uses a glow discharge to create acti

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Gubanov, O. M., D. S. Alymov, and V. N. Gadalov. "Effects of electrical discharges and deformation on the electrophysical and mechanical properties of high-pressure polyethylene." Glavnyj mekhanik (Chief Mechanic), no. 12 (November 16, 2021): 50–57. http://dx.doi.org/10.33920/pro-2-2112-04.

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Studies of the mechanical electrophysical properties of polymers and their modifications under the simultaneous influence of electrical discharges and mechanical force are presented. It is shown that a decrease in the electrophysical characteristics of the studied polymer materials in the presence of a tensile mechanical force leads to the accumulation of bulk charges in them and the formation of submicrocracks. This is indicated by the established relationship between the processes of formation and development of submicrocracks with the accumulation of bulk charge in polymers. These processes

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Albarrán Preza, Esthela, Enrique Vigueras-Santiago, and Susana Hernández López. "Synthesis and Characterization of Azobenzene-Containing Polydiacetylene Polymers." Advanced Materials Research 976 (June 2014): 46–51. http://dx.doi.org/10.4028/www.scientific.net/amr.976.46.

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Polydiacetylenes are a type of highly conjugated polymers, and highly polar species are obtained when these polymers contain donor-acceptor azobenzene entities. In this paper the synthesis, characterization and evaluation of the dielectric constant of two polydiacetylenes containing azobenzenes as pendant groups are discussed. The Azobenzene chromophores are covalently bonded to the main chain, and their polarity is defined by an electro-donor (amine) and an electro-acceptor group (nitro or chlorine) bonded to the ends of a conjugated azobenzene structure. Both polymers were processed into pla

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Kulkarni, Anandrao S., M. V. N. Ambika Prasad, Hajeebaba K. Inamdar, and Vijendra A. Chaudhari. "Studies on AC Conductivity and Dielectric Properties of Conducting Polyaniline-AgO Nanocomposites." Advanced Materials Research 1169 (March 18, 2022): 21–25. http://dx.doi.org/10.4028/p-63kf34.

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Polymers with metal oxide materials constitute a new class of polymer composite materials, that integrates materials science and technology. Chemical oxidation of aniline is carried out for PANI (PANI) and in-situ polymerization for PANI/AgO nanocomposite materials. Characterization tools such as XRD and SEM were used. The AC conductivity and dielectric behavior are investigated in the frequency range 100 to 2MHz at room temperature. It is observed that, the AgO nanoparticles in the PANI matrix have a greater influence on the AC conductivity and dielectrics.

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Shi, W., C. Fang, S. Guo, et al. "Investigation on dielectric properties of the polyetherketone nanocomposite with lead titanate ultrafines." Canadian Journal of Physics 79, no. 5 (2001): 847–55. http://dx.doi.org/10.1139/p01-040.

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The dielectric properties of polymer composites with inorganic nanoparticles were investigated. In the demonstration of the dielectric constant expression of the nanocomposite polymer, the dielectric contributions of the displacement polarization, the orientation polarization, and the space polarization in the nanocomposite polymer were all considered. In the demonstration, two dielectric relaxation models were used, that of Debye for inorganic nanoparticles and the HavriliakNegami function model for polymers. Then the expression of the complex dielectric constant of the nanocomposite polymer

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Shi, Yuhao, Yingkai Zheng, Jialiang Wang, et al. "Hysteresis-Free, High-Performance Polymer-Dielectric Organic Field-Effect Transistors Enabled by Supercritical Fluid." Research 2020 (August 30, 2020): 1–10. http://dx.doi.org/10.34133/2020/6587102.

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Organic field-effect transistors (OFETs) are of the core units in organic electronic circuits, and the performance of OFETs replies critically on the properties of their dielectric layers. Owing to the intrinsic flexibility and natural compatibility with other organic components, organic polymers, such as poly(vinyl alcohol) (PVA), have emerged as highly interesting dielectric materials for OFETs. However, unsatisfactory issues, such as hysteresis, high subthreshold swing, and low effective carrier mobility, still considerably limit the practical applications of the polymer-dielectric OFETs fo

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Burke, Andrew. "Prospects for the Development of High Energy Density Dielectric Capacitors." Applied Sciences 11, no. 17 (2021): 8063. http://dx.doi.org/10.3390/app11178063.

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In this paper, the design of high energy density dielectric capacitors for energy storage in vehicle, industrial, and electric utility applications have been considered in detail. The performance of these devices depends primarily on the dielectric constant and breakdown strength characteristics of the dielectric material used. A review of the literature on composite polymer materials to assess their present dielectric constants and the various approaches being pursued to increase energy density found that there are many papers in which materials having dielectric constants of 20–50 were repor

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Abdullah, Ahmed Q. "Effect of UV radiation on dielectric properties of PU/nano-TiO2 composites." Iraqi Journal of Physics (IJP) 15, no. 33 (2019): 49–53. http://dx.doi.org/10.30723/ijp.v15i33.139.

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The dielectric constant of most polymers is very low; the addition of TiO2 particles into the polymers provides an attractive and promising way to reach a high dielectric constant. Polymer-based materials with a high dielectric constant show great potential for energy storage applications. Four samples were prepared, one of them was polyurethane (PU) and the other were PU with different weight percent (wt %) of TiO2 (0.1, 0.2, 0.3) powder AFM test was used to distinguish the nanoparticles. The result shows that the most shape of these nanoparticles are spherical and the roughness average is 0.

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Liu, Tian, Weston Wood, Bin Li, Brooks Lively, and Wei-Hong Zhong. "Electrical and dielectric sensitivities to thermal processes in carbon nanofiber/high-density polyethylene composites." Science and Engineering of Composite Materials 18, no. 1-2 (2011): 51–60. http://dx.doi.org/10.1515/secm.2011.007.

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AbstractOwing to the huge interface region existing in a polymer nanocomposite, the effects of thermal processes on properties of nanocomposites are much more complicated than in a pure polymer. It is therefore important to determine the effects of thermal processes on nanocomposites with different interfacial interactions between the nanofillers and the polymer matrix. It is also important to explore the performance changes for nanocomposites under elevated temperatures over pure polymers. In this investigation, we examined the correlation of thermal treatment with dielectric properties of ca

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Thabet, Ahmed, and Youssef Mobarak. "Experimental Dielectric Measurements for Cost-fewer Polyvinyl Chloride Nanocomposites." International Journal of Electrical and Computer Engineering (IJECE) 5, no. 1 (2015): 13. http://dx.doi.org/10.11591/ijece.v5i1.pp13-22.

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<span>Polymer nanocomposites possess promising high performances as engineering materials, if they are prepared and fabricated properly. In this research, it has been processed samples of nanocomposite polymers as electrical insulating materials for application on the electric power cables by using the latest techniques of nanotechnology. This paper has been investigated enhanced dielectric and electrical properties of Polyvinyl chloride PVC as matrix have shown that trapping properties are highly modified by the presence of costless nanofillers clay and fumed silica. An experimental wor

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Li, Zongze, Gregory M. Treich, Mattewos Tefferi, et al. "High energy density and high efficiency all-organic polymers with enhanced dipolar polarization." Journal of Materials Chemistry A 7, no. 25 (2019): 15026–30. http://dx.doi.org/10.1039/c9ta03601f.

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Feng, Yudi, Ke Jin, Jia Guo, and Changchun Wang. "All-carbocycle hydrocarbon thermosets with high thermal stability and robust mechanical strength for low-k interlayer dielectrics." Polymer Chemistry 12, no. 33 (2021): 4812–21. http://dx.doi.org/10.1039/d1py00877c.

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Two kinds of hydrocarbon precursors were synthesized and cured at elevated temperatures to give cross-linked all-aliphatic/aromatic-ring polymers with a low dielectric constant for next-generation interlayer dielectrics.

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HERBEI, Elena Emanuela. "Dielectric PMMA Thin Layers Obtained by Spin Coating for Electronic Applications." Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science 45, no. 4 (2022): 87–91. http://dx.doi.org/10.35219/mms.2022.4.14.

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Thin polymeric films with dielectric properties become a very important part of today’s devices, being indispensable in industry, electrical applications and not only. Nowadays polymeric materials have attracted attention in academic and industrial research due to the miniaturization at the micro and nanoscale of different electronic devices. Polymers in general are used for their light weight, good mechanical strength, dielectric properties, and optical properties, which make them multifunctional materials.This paper presents research on polymethyl methacrylate (PMMA) thin films obtained by t

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TUHVATULLIN, Midhat, Yuri ARKHANGELSKY, Rustam AIPOV, and Eduard KHASANOV. "Innovations in designing microwave electro-technological units with hybrid chambers." Spanish Journal of Agricultural Research 21, no. 1 (2023): e0202. http://dx.doi.org/10.5424/sjar/2023211-19683.

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Aim of study: Microwave (MW) electro-technological units based on electromagnetic radiation of ultrahigh-frequency can involve thermal MW modification of dielectrics and non-thermal MW modification of polymers.  Area of study: Russian Federation. Material and methods: The paper considers a method for making a unit with a hybrid chamber, where thermal and non-thermal MW modifications were carried out simultaneously, and the remaining energy after non-thermal MW modification of polymers was used for heating the dielectric.  Main results: A microwave electro-technological unit w

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38

Deeba, Farah, Kriti Shrivastava, Minal Bafna, and Ankur Jain. "Tuning of Dielectric Properties of Polymers by Composite Formation: The Effect of Inorganic Fillers Addition." Journal of Composites Science 6, no. 12 (2022): 355. http://dx.doi.org/10.3390/jcs6120355.

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Polymer blend or composite, which is a combination of two or more polymers and fillers such as semiconductors, metals, metal oxides, salts and ceramics, are a synthesized product facilitating improved, augmented or customized properties, and have widespread applications for the achievement of functional materials. Polymer materials with embedded inorganic fillers are significantly appealing for challenging and outstanding electric, dielectric, optical and mechanical applications involving magnetic features. In particular, a polymer matrix exhibiting large values of dielectric constant (ε′) wit

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Адамьян, Ю. Э., С. И. Кривошеев та С. Г. Магазинов. "Особенности описания импульсной электрической прочности полимерных диэлектриков". Письма в журнал технической физики 47, № 5 (2021): 48. http://dx.doi.org/10.21883/pjtf.2021.05.50679.18621.

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The scenario based on the macro molecules field ionization model is proposed to describe the polymer dielectrics pulse breakdown. The decisive role of the real dielectric space-field inhomogeneity on formation of the ionization “sources” and redistribution of charge carries is taken into account. The justification of the choice of the defining model parameters - energy gap width and frequency factor is carried out. The possibility of using these parameters to describe the pulse electric strength of polymers in both uniform and sharply non-uniform electric fields (on the example of polymethylme

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Dang, Zhi-Min, Jin-Kai Yuan, Jun-Wei Zha, Peng-Hao Hu, Dong-Rui Wang, and Zhong-Yang Cheng. "High-permittivity polymer nanocomposites: Influence of interface on dielectric properties." Journal of Advanced Dielectrics 03, no. 03 (2013): 1330004. http://dx.doi.org/10.1142/s2010135x13300041.

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Flexible dielectric composites with high permittivity have been extensively studied due to their potential applications in high-density energy capacitors. In this review, effects of interface characteristics on the dielectric properties in the polymer-based nanocomposites with high permittivity are analyzed. The polymer-based dielectric composites are classified into two types: dielectric–dielectric (DD, ceramic particle-polymer) composites and conductor–dielectric (CD, conductive particle-polymer) composites. It is highly desirable for the dielectric–dielectric composites to exhibit high perm

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Leong, D. B., M. A. Helfand, R. L. McConville, and F. W. Mercer. "The structure and chemistry of polymer metal interfaces: A combined EM and XPS investigation." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 1 (1992): 196–97. http://dx.doi.org/10.1017/s0424820100121387.

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Polymer to metal relationships for applications from coating finishes to electronic devices require interfacial synergy. Polymer application requirements range in temperature, thermal stability, thermal expansion, moisture absorption, oxidative stability, etc. and choice of metal and deposition technique must take into account these characteristics. While the ability to deposit metal in a controllable fashion is well established the present study focuses on what takes place at the polymer metal interface. Polymer/metal interactions on polyimide systems have been studied in detail for the past

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Trajkovska, Anka. "Inorganic dopants in polymer cholesteric liquid crystals." Macedonian Journal of Chemistry and Chemical Engineering 34, no. 2 (2015): 381. http://dx.doi.org/10.20450/mjcce.2015.629.

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<p>A variety of dopants are used for different types of polymers to change their properties. Inorganic dopants are usually used to change the dielectric properties of the polymers. These compositions find different applications especially in electronic systems due to ease of polymer processing, increased functionality and low cost of novel materials that are with relatively high dielectric constant compared to the base polymer material.</p><p>In this study, polymer cholesteric liquid crystal (PCLC) is used as a host material that is doped by different inorganic dopants, BaTiO

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Abdullah, Nadhim A., and Fatima H. Malk. "Optical Properties of Blend of PMMA:PVDF." University of Aden Journal of Natural and Applied Sciences 25, no. 1 (2022): 189–96. http://dx.doi.org/10.47372/uajnas.2021.n1.a16.

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In this study, thin films of PMMA Poly (methyl methacrylate)- Polyvinylidene fluoride(PMMA-PVDF), PMMA polymer and soluble PVDF polymer were prepared at (5%)Toluene and polymeric blends in 1:1 volume ratio of polymers and in different proportions of polymers. The studied films were prepared by the Spin coating method, and the optical parameters of the thin films were measured within a range (300-900)nm and the thickness of the films were constant (223 nm). Absorbance (A), linear absorption coefficient (α), refractive index (n), extinction coefficient (K), real and imaginary dielectric constant

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Chooseng, C., S. Chaipo, and C. Putson. "Ferroelectric properties and breakdown strength of layer-by-layer poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) and polyurethane (PU) for energy storage application." Journal of Physics: Conference Series 2145, no. 1 (2021): 012043. http://dx.doi.org/10.1088/1742-6596/2145/1/012043.

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Abstract Ferroelectric polymers are one of the next- generation pulsed capacitor materials for the potential application in capacitive energy storage. This polymer with higher saturated polarization, smaller remnant polarization, and higher electrical breakdown are the most promising candidates. In this work, the dielectric properties and energy storage capacity of the bilayer polymer films of Poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) and polyurethane (PU) were studied. These bilayer polymers were prepared by layer- by- layer method at the condition of variable layer thickn

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Chougule, Shivanand M., Anna Twinkle, Riya Thomas, and Manoj Balachandran. "Quantifying the role of nanocarbon fillers on dielectric properties of poly(vinylidene fluoride) matrix." Polymers and Polymer Composites 30 (January 2022): 096739112210875. http://dx.doi.org/10.1177/09673911221087597.

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Development of polymers with excellent dielectric properties is a challenge for advanced electronic devices. Impregnating conducting fillers like carbon nanoparticles can enhance the dielectric constant, retaining low loss due to its compatibility and favorable polarization within the polymer matrix. The multifunctional characteristics of coal-derived nanocarbon can improve permittivity and facilitate large-scale production at a lower cost. The incorporation of coal-based nanocarbon in the polymer matrix and its dielectric response is seldom investigated. In this work, different ratios (10:90,

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Yin, Xiaodong, Yali Qiao, Matthew R. Gadinski, Qing Wang, and Chuanbing Tang. "Flexible thiophene polymers: a concerted macromolecular architecture for dielectrics." Polymer Chemistry 7, no. 17 (2016): 2929–33. http://dx.doi.org/10.1039/c6py00233a.

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Highly flexible and transparent free-standing films can be readily obtained from oligothiophene-containing norbornene polymers and their hydrogenated derivatives prepared by ROMP. The rigidness/softness of the polymer backbone and polar side chains dictate dielectric properties.

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You, Yong, Chenhao Zhan, Ling Tu, et al. "Polyarylene Ether Nitrile-Based High-k Composites for Dielectric Applications." International Journal of Polymer Science 2018 (July 10, 2018): 1–15. http://dx.doi.org/10.1155/2018/5161908.

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Flexible polymer-based composites exhibiting high dielectric constant as well as low dielectric loss have been intensively investigated for their potential utilization in electronics and electricity industry and energy storage. Resulting from the polar -CN on the side chain, polyarylene ether nitrile (PEN) shows relatively high dielectric constant which has been extensively investigated as one of the hot spots as dielectric materials. However, the dielectric constant of PEN is still much lower than the ceramic dielectrics such as BaTiO3, TiO2, and Al2O3. In this review, recent and in-progress

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Martyniuk, G. V., and O. I. Aksimentyeva. "Influence of conductive polymer filler on electrical conductivity and microhardness of composites with dielectric polymeric matrices." Chernivtsi University Scientific Herald. Chemistry, no. 818 (2019): 80–86. http://dx.doi.org/10.31861/chem-2019-818-11.

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Nowadays special attention is given to the so-called "smart-materials" or "intellectual" materials, which have the ability to purposefully change their physical and physical-chemical properties depending on changing external conditions. Сonductive conjugated polymers - polyaniline (РАNi) and its derivatives may alter their properties in response to external action - exhibit sensory sensitivity, electrochromic, thermochromic and solvachromic effects. When creating РАNi composites with industrial polymer matrices, an important issue is to determine the physical and mechanical properties, in part

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MARTYNІUK, Galyna, and Olena AKSIMENTYEVA. "INFLUENCE OF CONDUCTIVE POLYMER FILLER ON ELECTRICAL CONDUCTIVITY AND MICROHARDNESS OF COMPOSITES WITH DIELECTRIC POLYMERIC MATRICES." Proceedings of the Shevchenko Scientific Society. Series Сhemical Sciences 2020, no. 60 (2020): 14–21. http://dx.doi.org/10.37827/ntsh.chem.2020.60.014.

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Nowadays special attention is given to the so-called “smart-materials” or “intellectual” materials, which have the ability to purposefully change their physical and physical-chemical properties depending on changing external conditions. Conductive conjugated polymers–polyaniline (РАNi) and its derivatives may alter their properties in response to external action–exhibit sensory sensitivity, electrochromic, thermochromic and solvatochromic effects. When creating РАNi composites with industrial polymer matrices, an important issue is to determine the physical and mechanical properties, in partic

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Le, Quoc Toan, F. Drieskens, T. Conard, et al. "Modification of Post-Etch Residues by UV for Wet Removal." Solid State Phenomena 187 (April 2012): 207–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.187.207.

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In back-end of line processing, the polymer deposited on the dielectric sidewalls during the etch must be removed prior to subsequent processing steps to achieve high adhesion and good coverage of materials deposited in the etched features [1,. Typically, this is done by a combination of short plasma treatment and diluted wet clean, or by wet cleans alone. On the one hand, for porous dielectric stacks, a mild plasma treatment that preserves the integrity of the low-k dielectrics would not be sufficient to efficiently remove this residue. Furthermore, aqueous cleaning solutions is not efficient

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