Relevant bibliographies by topics / Low-frequency permittivity

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Academic literature on the topic 'Low-frequency permittivity'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Low-frequency permittivity"

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Chern, Gung, H. Mathias, L. R. Testardi, L. Seger, and J. Schlenoff. "Low-frequency dielectric permittivity of C60." Journal of Superconductivity 8, no. 2 (1995): 207–10. http://dx.doi.org/10.1007/bf00732372.

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Sedelnikova, Olga V., Kseniya I. Baskakova, Artem V. Gusel’nikov, Pavel E. Plyusnin, Lyubov G. Bulusheva, and Alexander V. Okotrub. "Percolative Composites with Carbon Nanohorns: Low-Frequency and Ultra-High Frequency Response." Materials 12, no. 11 (2019): 1848. http://dx.doi.org/10.3390/ma12111848.

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We systematically studied the electromagnetic properties of carbon nanohorns (CNHs) and polystyrene composites filled with CNHs in static regime, low frequency and microwave regions. CNHs were synthesized using the direct current arc-discharge method using solid graphite rods and graphite rods filled by melamine mixed with graphite powder. Transmission electron microscopy and thermo-gravimetric analysis showed that CNH agglomerates are the main product, while the addition of melamine promotes the formation of graphite balls. Graphitic contamination causes the internal leakage of inter-agglomer
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Sun, Kai, Ao Ma, Pengtao Yang, et al. "Flexible Copper Nanowire/Polyvinylidene Fluoride Membranous Composites with a Frequency-Independent Negative Permittivity." Polymers 15, no. 23 (2023): 4486. http://dx.doi.org/10.3390/polym15234486.

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With the increasing popularity of wearable devices, flexible electronics with a negative permittivity property have been widely applied to wearable devices, sensors, and energy storage. In particular, a low-frequency dispersion negative permittivity in a wide frequency range can effectively contribute to the stable working performance of devices. In this work, polyvinylidene fluoride (PVDF) was selected as the flexible matrix, and copper nanowires (CuNWs) were used as the conductive functional filler to prepare a flexible CuNWs/PVDF composite film with a low-frequency dispersion negative permi
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Emerson, D. W., and H. K. Welsh. "Low‐frequency permittivities of skarns and associated rocks." GEOPHYSICS 53, no. 9 (1988): 1233–40. http://dx.doi.org/10.1190/1.1442564.

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The lossy dielectric properties of dry heterogeneous skarns and associated rocks vary significantly when the real (ε′) and quadrature (ε″) permittivity responses are measured between 1 Hz and 160 kHz. Ores containing iron oxides and/or sulfides show very large permittivity values and high loss tangents with some dc conductivity. Unmineralized skarns manifest large ε′ and moderate ε″ values. Country rock, limestones, and granitoids show relatively low permittivities. The dielectric responses are ascribed generally to Maxwell‐Wagner mechanisms. No clear, convincing correlations are apparent betw
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D’Alvia, Livio. "Low-Frequency Measurement of Moistened Wood-Based Materials." Metrology 5, no. 1 (2025): 1. https://doi.org/10.3390/metrology5010001.

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This article examines how water content is a crucial parameter for the preservation of wooden artworks and buildings, focusing on non-invasive ways of measuring water content through capacitive methods. A personalized, low-cost probe to measure the dielectric properties of oak and poplar wood at various water content levels and frequencies is described. The accuracy of the probe is confirmed by testing it with reference materials like air, PTFE, PLA, glass and Bakelite, demonstrating an accuracy error below 2%. Next, the probe is used to evaluate the relationship between water content and perm
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Prabhakar, Om Prakash, Dhananjay Sahu, and Raj Kumar Sahu. "Triboelectric nanogenerator to harness energy from low-frequency and low-amplitude vibrating sources." Transactions on Energy Systems and Engineering Applications 6, no. 1 (2025): 1–16. https://doi.org/10.32397/tesea.vol6.n1.669.

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Dielectric Elastomer Generator (DEG) stands out as a promising electromechanical device to harness energy from non-conventional sources owing to its ability to convert mechanical energy into electrical power. DEG with no rotating part demonstrates a high performance-to-weight ratio with ease in fabrication and compactness that sets it apart from traditional energy harvesting techniques. Triboelectric nanogenerators (TENGs) belong to a self-powered class of DEG that capitalizes on low-frequency and amplitude mechanical sources. Existing models for predicting the performance of TENGs often assum
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Shivashankar, H., Kevin Amith Mathias, Pavankumar R. Sondar, M. H. Shrishail, and S. M. Kulkarni. "Study on low-frequency dielectric behavior of the carbon black/polymer nanocomposite." Journal of Materials Science: Materials in Electronics 32, no. 24 (2021): 28674–86. http://dx.doi.org/10.1007/s10854-021-07242-1.

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AbstractRecently, polymer-based dielectric materials have become one of the key materials to play an essential role in clean energy production, energy transformation, and energy storage applications. The end usage is the energy storage capability because it is a trade-off between dielectric permittivity, dielectric loss, and dissipation factor. Hence, it is of prime importance to study the dielectric properties of polymer materials by adding filler material at a low-frequency range. In the present study, polydimethylsiloxane/carbon black nanocomposites are prepared using the solution cast meth
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Chen, Min, Kai Sun, Xuai Wang, and Yanmin Wang. "Communication—Tunable Negative Permittivity of Cobalt and Epoxy Composites at 3 kHz ∼ 1 MHz Frequency Regions." ECS Journal of Solid State Science and Technology 10, no. 12 (2021): 123007. http://dx.doi.org/10.1149/2162-8777/ac3e45.

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Negative permittivity in percolation composites has drawn much attention owing to their potential application. This study set out to explore whether tunable negative permittivity can be realized in metal composites at 3 kHz ∼ 1 MHz frequency regions. When the content of cobalt is 80 wt%, the permittivity turns to negative in the test band. These findings show that the Co conductive network has formed and provides large numbers of free electrons. Meanwhile, the percolation composites with negative permittivity show inductive characteristic. This research supports the idea that tunable low-frequ
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Brito, Pedro C., Magdalena Mechetti, and Carlos M. Gotter. "Low Frequency Permittivity and Conductivity of Essential Lemon Oil." Journal of Essential Oil Research 19, no. 3 (2007): 202–5. http://dx.doi.org/10.1080/10412905.2007.9699260.

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Boltaev, A. P., F. A. Pudonin, and I. A. Sherstnev. "Low-frequency giant effective permittivity of island metal films." Physics of the Solid State 57, no. 10 (2015): 2099–105. http://dx.doi.org/10.1134/s1063783415100066.

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Dissertations / Theses on the topic "Low-frequency permittivity"

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Флюнт, О. Є. "Залежність параметрів низькочастотної дисперсії від одновісного тиску у кристалах GaSe". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40691.

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В частотному діапазоні діелектричного спектра, в якому домінує низькочастотна дисперсія (НЧД), дійсна та уявна частини відносної діелектричної проникності зростають з пониженням частоти змінного електричного поля відповідно до степеневого закону 1/1-n з малими значеннями n. З пониженням частоти на декілька порядків дійсна та уявна частини діелектричної проникності матеріалу можуть зрости на, приблизно, таке ж саме значення порядків. Не зважаючи на великі значення діелектричної проникності та діелектричних втрат на низьких частотах, детальні дослідження НЧД часто вказують саме на об’ємний хар
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Abbas, Mohamed Helmy Ahmed M. "Novel RF/Microwave Circuits And Systems for Lab on-Chip/on-Board Chemical Sensors." Thesis, 2013. http://hdl.handle.net/1969.1/151075.

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Recent research focuses on expanding the use of RF/Microwave circuits and systems to include multi-disciplinary applications. One example is the detection of the dielectric properties of chemicals and bio-chemicals at microwave frequencies, which is useful for pharmaceutical applications, food and drug safety, medical diagnosis and material characterization. Dielectric spectroscopy is also quite relevant to detect the frequency dispersive characteristics of materials over a wide frequency range for more accurate detection. In this dissertation, on-chip and on-board solutions for microwave chem
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Book chapters on the topic "Low-frequency permittivity"

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Tiwari, Sandip. "High permittivity dielectrics." In Semiconductor Physics. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198759867.003.0018.

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This chapter discusses high permittivity dielectrics such as hafnium oxide and zirconium oxide and how the phonons of such materials, their band and polarization behavior and silicon interact. High permittivity materials are used as dielectrics with semiconductors. A prominent use for these materials is in suppressing tunneling while enhancing the field effect. High permittivity arises strongly from ionic polarization. So, the low frequency response for high permittivity materials is very different from that of silicon dioxide. Transition metal oxides’ high permittivity comes together with sof
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Barbato Lucio, Minucci Simone, Rubinacci Guglielmo, Tamburrino Antonello, and Ventre Salvatore. "Numerical Behavior of Models of Composite Materials in E'NDT at “Low” Frequencies." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-407-7-77.

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In this paperthe numerical modeling of composite materials in view of Nondestructive Testing is considered. The composite material is assumed to be modeled at the macroscopic scale by a possibly complex dielectric permittivity tensor. The material is probed by means of an electromagnetic field having wavelength much larger than the relevant geometrical dimensions. As well known, the numerical modeling is critical especially in this “low-frequency” regime where a strong ill-conditioning of the relevant stiffness matrix typically occur (the so-called low-frequency breakdown p
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Witos Miroslaw, Roskosz Maciej, Fryczowski Krzysztof, and Zurek Zbigniew Hilary. "NDE & SHM of Technical Objects Using Low-Cost Impedance Method." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2017. https://doi.org/10.3233/978-1-61499-767-2-75.

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The theoretical base of the low frequency impedance method and possibilities of its use in the diagnostics of paramagnetic and ferromagnetic alloys (including welds) used in transport and power engineering has been explained in the article. The main attention has been paid to the measurement of stresses in the material using low-cost measurement path, e.g. handheld automated LCR meter. During laboratory tests with five signal frequencies designated relationships describing the impact of stress on the parameters of impedance. Example results are illustrated. For quantitative analysis of observe
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A.H. Alzahrani, Hassan. "CuO and MWCNTs Nanoparticles Filled PVA-PVP Nanocomposites: Morphological, Optical, Dielectric, and Electrical Characteristics." In Carbon Nanotubes - Recent Advances, New Perspectives and Potential Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105810.

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Copper dioxide (CuO) nanoparticles and multiwall carbon nanotubes (MWCNTs)-filled poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP) blend matrix (50/50 wt%)-based polymer nanocomposites (PNCs) have been prepared employing the solution-cast method. The X-ray diffraction explores the semicrystalline morphologies of these PNCs. The FTIR, SEM, and AFM measurements of PNCs expose the development of the miscible mix, polymer-polymer and polymer-nanoparticle interactions, and the influence of CuO and MWCNTs nanofillers on the morphology aspects on the main chain of PVA/PVP blend. The nanofi
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Rizwan, M. "Superconducting Metamaterials and their Applications." In Superconductors. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644902110-11.

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Superconductors have been in the field for more than a century now and superconducting metamaterials are a class of materials that have extremely low losses. Superconducting materials exhibit supreme properties such as currents that can last for twenty-six years and quantum phenomenon that makes it very suitable for making metamaterials. Superconductor composites are materials in which a material with a substantial permeability and negative effective permittivity material is combined with a superconductor which reduce losses in metamaterials at resonance frequency. There are many angles to exp
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Zhang, Xingyun, Qunting Ren, Tiexing Wang, and Yang Bai. "A Low-Cost Microwave Sensor Based on Complementary Circular Spiral Resonator." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2024. https://doi.org/10.3233/faia241318.

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We propose a microwave sensor on the basis of complementary circular spiral resonator (CCSR) for substrate determination and thickness identification in this paper. The developed sensor consists of a microstrip transmission line and CCSR. By taking advantage of High Frequency Structure Simulator (HFSS), the designed device operates at 2.9 GHz with high Q factor. Through simulation, a strong electric field is generated besides CCSR, making this region very susceptible to the transformation in nearby dielectric substrate. When different substrates to be tested are put on sensing area, resonance
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Singh, Sukhmander, Ashish Tyagi, and Bhavna Vidhani. "Physics of Absorption and generation of Electromagnetic Radiation." In Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99037.

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The chapter is divided into two parts. In the first part, the chapter discusses the theory of propagation of electromagnetic waves in different media with the help of Maxwell’s equations of electromagnetic fields. The electromagnetic waves with low frequency are suitable for the communication in sea water and are illustrated with numerical examples. The underwater communication have been used for the oil (gas) field monitoring, underwater vehicles, coastline protection, oceanographic data collection, etc. The mathematical expression of penetration depth of electromagnetic waves is derived. The
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Kosamiya, Vishvajitsinh, and Jing Wang. "High-k, Low-Loss Ceramic-Thermoplastic Composite Feedstock Filaments for Fused Deposition Modeling of Microwave and mm-Wave Devices." In Additive Manufacturing - Present and Sustainable Future, Materials and Applications [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1008537.

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Maturing of additive manufacturing (AM) techniques has increased their utilization for fabricating radio frequency (RF) and microwave devices. Solid composites used in material extrusion AM have experienced considerable expansion over the past decade, incorporating functional properties into 3D-printed objects. There are encouraging indications from AM material research that electrically efficient AM materials can be discovered. These materials would be useful for producing microwave components in the future. One of the enabling techniques for fabricating these materials is to incorporate nano
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Conference papers on the topic "Low-frequency permittivity"

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Xiao, Y., F. Norouzian, E. G. Hoare, A. Bystrov, M. Gashinova, and M. Cherniakov. "Automotive Paint Permittivity Estimation in Low-THz frequency." In 2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT). IEEE, 2024. http://dx.doi.org/10.1109/ucmmt62975.2024.10737755.

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Gouws, Gideon, Malcolm Ingham, Sean Buchanan, Ann Hibbard, Andy Mahoney, and Alec Gough. "Low frequency permittivity measurements of sea ice." In 2009 IEEE Sensors. IEEE, 2009. http://dx.doi.org/10.1109/icsens.2009.5398226.

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Tu, C. S., T. H. Wang, V. H. Schmidt, and R. R. Chien. "Origin of low-frequency dielectric permittivity in BiFeO3 multiferroic ceramics." In Nanoscale Phenomena in Polar Materials. IEEE, 2011. http://dx.doi.org/10.1109/isaf.2011.6014103.

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Jacobsen, Scott J., Keith Bartenhagen Bartenhagen, Barbara I. Anderson, et al. "Deep Salinity-Independent Water Saturation From Low-Frequency-Dielectric Rock Properties." In 2022 SPWLA 63rd Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2022. http://dx.doi.org/10.30632/spwla-2022-0004.

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From the first wireline log in 1927, formation evaluation always had to provide estimates for water saturation to identify and quantify hydrocarbon-bearing reservoir rocks. Formation conductivity (or resistivity) was the single leading quantity for input to various saturation models. However, conductivity by itself intrinsically combines water saturation with water salinity, a parameter which petrophysicists constantly struggle to determine in many situations. The arrival of wireline dielectric measurements provided complementary petrophysical and electromagnetic information, which at high fre
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Araki, Hitoshi, Yohei Kiuchi, Akira Shimada, Hisashi Ogasawara, Masaya Jukei, and Masao Tomikawa. "Low Permittivity and Dielectric Loss Polyimide with Patternability for High Frequency Applications." In 2020 IEEE 70th Electronic Components and Technology Conference (ECTC). IEEE, 2020. http://dx.doi.org/10.1109/ectc32862.2020.00105.

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Kozlov, Mikhail, and Gregor Schaefers. "Influence of low permittivity medium conductivity on radio frequency induced power deposition." In 2016 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium). IEEE, 2016. http://dx.doi.org/10.1109/usnc-ursi.2016.7588526.

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Abdallah, Wael, Ping Zhang, Gong Li Wang, and Shouxiang Mark Ma. "Downhole Characterization of Clays and Formation Water Salinity Using Low Frequency Permittivity Dispersion." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213213-ms.

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Abstract Clays in reservoir rocks have a significant impact on formation evaluation. An important property of clay minerals is their ability to adsorb ions on their exposed surface, which is measured by its cation exchange capacity (CEC). This property can affect saturation calculation if not properly accounted for. Many techniques have been developed for clay characterization, but it remains a focus of frontline research to find an accurate method for quantifying clays in situ and is the main objective of this study. Extensive numerical studies have been conducted and the results have indicat
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Ghiner, Alexandre V., and Antonio Jefersen de Deus Moreno. "Narrow low-frequency resonance of dielectric permittivity in 1-asparagine monohydrated nonlinear optical crystals." In ICONO '98: Laser Spectroscopy and Optical Diagnostics--Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, edited by Konstantin N. Drabovich, V. I. Emelyanova, and Vladimir A. Makarov. SPIE, 1999. http://dx.doi.org/10.1117/12.342343.

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Keil Laurens, Judith E., and Kurt E. Oughstun. "Analytic frequency dispersion model of liquid water." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.thff4.

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The experimentally observed frequency dispersion of both the real index of refraction and absorption of triply distilled liquid water over the frequency domain from ω=1×102Hz to ω=1 × 1022 Hz is described using analytic models for both the rotational and resonance polarization phenomena. In the low-frequency domain ωε[0,ω R ], where ωR~ 1 × 1013 Hz, the real index of refraction monotonically decreases with increasing frequency, which is indicative of rotational polarization phenomena. The complex-valued dielectric permittivity over this frequency domain is found to be accurately described by t
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Wang, Ming, Wenhu Yang, Shuhui Yu, Rong Sun, and Wei-Hsin Liao. "Low loss CCTO@Fe3O4/epoxy composites with matched permeability and permittivity for high frequency applications." In 2015 16th International Conference on Electronic Packaging Technology (ICEPT). IEEE, 2015. http://dx.doi.org/10.1109/icept.2015.7236795.

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