Academic literature on the topic 'Strain dependent dielectric constant'

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Journal articles on the topic "Strain dependent dielectric constant"

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A., Agrawal*1 N.Yadav2 &. S.Ghosh3. "DIFFUSION-INDUCED MODULATIONAL INSTABILITY IN SEMICONDUCTOR QUANTUM PLASMA WITH STRAIN DEPENDENT DIELECTRIC CONSTANT." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 10 (2017): 381–89. https://doi.org/10.5281/zenodo.1012553.

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In the present paper we report the diffusion-induced modulational instability (MI) of an intense laser beam in materials (BaTiO<sub>3</sub>) with high dielectric constant using quantum hydrodynamic model of plasmas including Bohm potential and Fermi degenerate pressure. For the study of modulation interaction, we have considered that the origin of this nonlinear interaction lies in the third order nonlinear electrical susceptibility arising due to diffusion-induced nonlinear current density and strain dependent polarization of the medium. We have studied the qualitative behavior of parametric
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Pal, A. K., and M. Ganguly. "Bleustein-Gulyaev Waves in Materials with Strain-Dependent Dielectric Constant." Physica Status Solidi (a) 103, no. 1 (1987): 167–73. http://dx.doi.org/10.1002/pssa.2211030118.

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Li, Chun, Fan Yang, and Wan Lin Guo. "Strain-Induced Modulations of Electro-Optic and Nonlinear Optical Properties of ZnO: A First-Principles Study." Applied Mechanics and Materials 29-32 (August 2010): 1803–8. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1803.

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Strain-dependent electro-optic constant r33 and nonlinear optical coefficient d33 of ZnO are investigated systematically using density-functional theory based linear-response perturbation method. Miscellaneous properties, such as dielectric constants, elastic constants, piezoelectric coefficients, nonlinear optical coefficients, and electro-optic constants of other II-VI compound semiconductors (both Wurtzite and Zinc-blende structures) are also calculated for comparison with the results of unstrained ZnO. Extensive first-principles calculations show that both r33 and d33 of ZnO decrease almos
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Sharma, S. B., R. Adhikari, K. R. Sigdel, and R. Bhatta. "Strain Induced Electronic and Optical Properties of 2D Silicon Carbide Monolayer Using Density Functional Theory." Journal of Nepal Physical Society 7, no. 1 (2021): 60–65. http://dx.doi.org/10.3126/jnphyssoc.v7i1.36977.

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Using the first principle calculation, we investigated the structural, electronic, and strain-dependent optical properties of the two-dimensional hexagonal Silicon Carbide (SiC) Monolayer. We found that the biaxial compressive strain loading gradually changes the direct bandgap SiC into indirect bandgap semiconductor. The compressive strain increases the bandgap but reduces the values of static dielectric constant and refractive index. Conversely, the biaxial tensile strain loading decreases the bandgap but increases the value of static dielectric constant and refractive index. The result show
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Artemenko, O. L., and B. B. Sevruk. "Parametric Phonon-Helicon Interaction in Centrosymmetric Crystals with Strain-Dependent Dielectric Constant." Acta Physica Polonica A 90, no. 3 (1996): 531–39. http://dx.doi.org/10.12693/aphyspola.90.531.

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Ghosh, S., and R. B. Saxena. "Parametric Instabilities of Laser Beams in Material with Strain-Dependent Dielectric Constant." physica status solidi (a) 96, no. 1 (1986): 111–19. http://dx.doi.org/10.1002/pssa.2210960113.

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Sahu, R. K., K. Patra, S. Bhaumik, A. K. Pandey, and D. K. Setua. "Stress-Strain Behaviour of Dielectric Elastomer for Actuators." Applied Mechanics and Materials 789-790 (September 2015): 837–41. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.837.

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Dielectric elastomer (DE) is gaining importance for potential strategic and commercial application as actuators. This paper reports the experimental investigation on different mechanical phenomena at large deformation of a commercially available acrylic dielectric elastomer material, VHB 4910 (3M) which is widely used for dielectric elastomer actuator (DEA) research. Attempts are made for accurate and precise experimental determination of nonlinear stress-strain, strain rate dependent hysteresis behaviour and cyclic softening of this material. It is observed that with the increase in strain ra
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Abbas, Yasir, Muhammad Kamran, Tanveer Akhtar, and Muhammad Anis-ur-Rehman. "Study of Temperature Dependent Dielectric Spectroscopy of Cerium Doped Bismuth Calcium Cobaltite." Materials Science Forum 1067 (August 10, 2022): 197–203. http://dx.doi.org/10.4028/p-292841.

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Bulk specimens of Bi2Ca2-xCexCoO6 (x = 0.00, 0.20) were prepared in pure phase form using co-precipitation method. The monoclinic structure of all samples is revealed via X-Ray Diffraction (XRD) analysis. The crystallite size, lattice constant, lattice strain, and volume of the unit cell were all determined using XRD analysis. On sintered at 750°C for 2 hours, the average crystallite size was 32-38nm. The precision analyzer was used to determine the loss tangent tan (δ), dielectric constant (ε'), AC conductivity (σac) in the 20Hz-3MHz range. The conduction process of electrical conductivity wa
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Ghosh, S., and S. Dixit. "Modulational instability of a laser beam in a piezoelectric material with strain dependent dielectric constant." Physics Letters A 118, no. 7 (1986): 354–56. http://dx.doi.org/10.1016/0375-9601(86)90324-5.

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Sanghvi, R., and S. Ghosh. "Amplitude modulation and demodulation of electromagnetic waves in magnetised material with strain-dependent dielectric constant." physica status solidi (a) 118, no. 1 (1990): 235–40. http://dx.doi.org/10.1002/pssa.2211180128.

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Dissertations / Theses on the topic "Strain dependent dielectric constant"

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Liu, Hongrui. "EFFECTS OF STRAIN ON DIELECTRIC PROPERTIES OF FERROELECTRIC Ba0.5Sr0.5TiO3 FILMS." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/451.

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Owing to the large electric-field-dependent permittivity, ferroelectric thin films have attracted a great deal of attention on applications in miniature tunable microwave components with high performance and cost reduction, such as phase shifters, tunable oscillators, delay lines, and antennas. These tunable devices require large change in the dielectric constant with applied field and a low loss at microwave frequencies. As one of the promising ferroelectric materials, barium strontium titanate thin film, especially Ba0.5Sr0.5TiO3 (BST) films, have raises great research interests due to its h
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Books on the topic "Strain dependent dielectric constant"

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1939-, Gregory William D., Gannon University. College of Science and Engineering., and Plastics Recycling Foundation (Rutgers University), eds. Report to the Plastics Recycling Foundation from Gannon University for sorting plastic containers for recycling using frequency dependent dielectric constant measurements: Summary report for the first year July 1, 1990 through June 30, 1991. Gannon University, College of Science and Engineering, 1991.

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Book chapters on the topic "Strain dependent dielectric constant"

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Tigner, B., D. J. Salvino, S. Rogge, and D. D. Osheroff. "Low-Temperature History-Dependent Dielectric Constant in Amorphous SiO2 and SiO1.8 Films." In Springer Series in Solid-State Sciences. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84888-9_112.

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Nath, Dipak, and Raghunandan Das. "Structural, Morphological and Magnetic Behaviour of Rare Earth Substituted Perovskite Nanoparticles: A Brief Review." In A Basic Handbook of Science, Technology and Innovation for Inclusive Development [Volume: 2], 2nd ed. International Academic Publishing House (IAPH), 2025. https://doi.org/10.52756/bhstiid.2025.e02.003.

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Perovskite nanoparticles serve as an important platform for investigating solid-state crystallography and structural chemistry. The partial substitution of metal cations with rare-earth (RE) elements such as Eu, Sm, Ce, Er, Dy, La, and Nd induces lattice distortions, leading to strain that significantly influences the electrical and dielectric properties of these materials. The chemical and physical characteristics of these dopants within the perovskite oxide (PO) matrix facilitate controlled modifications in structural, magnetic, and electrical behaviors. Doping advanced perovskite materials
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Bhattacharjee, Sweta, Saikot Chatterjee, and Asoke Banerjee. "Comparison of Upper and Lower Body Strength Between Morning Walkers and Sedentary Aged Women." In A Basic Handbook of Science, Technology and Innovation for Inclusive Development [Volume: 2], 2nd ed. International Academic Publishing House (IAPH), 2025. https://doi.org/10.52756/bhstiid.2025.e02.008.

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Perovskite nanoparticles serve as an important platform for investigating solid-state crystallography and structural chemistry. The partial substitution of metal cations with rare-earth (RE) elements such as Eu, Sm, Ce, Er, Dy, La, and Nd induces lattice distortions, leading to strain that significantly influences the electrical and dielectric properties of these materials. The chemical and physical characteristics of these dopants within the perovskite oxide (PO) matrix facilitate controlled modifications in structural, magnetic, and electrical behaviors. Doping advanced perovskite materials
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Newnham, Robert E. "Tensors and physical properties." In Properties of Materials. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198520757.003.0007.

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In this chapter we introduce the tensor description of physical properties along with Neumann’s Principle relating symmetry to physical properties. As pointed out in the introduction, many different types of anisotropic properties are described in this book, but all have one thing in common: a physical property is a relationship between two measured quantities. Four examples are illustrated in Fig. 5.1. Elasticity is one of the standard equilibrium properties treated in crystal physics courses. The elastic compliance coefficients relate mechanical strain, the dependent variable, to mechanical
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"NanoDielectric Theories." In Design and Investment of High Voltage NanoDielectrics. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3829-6.ch004.

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This chapter sheds light on the recent nanotechnology theoretical models for interphase power law IPL model, inhomogeneous interphase, and multi-nanoparticles technique. Moreover, this chapter reviews deliberate hypothetical researches of the effective dielectric constant for polymer/filler nanocomposites and its reliance on “filler concentration, the interphase interactions, polymer filler dielectric constant, and interphase dielectric constant.” This chapter also investigates the prediction of the dielectric constant of new nanocomposite materials dependent upon exponential power law model.
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Newnham, Robert E. "Stress and strain." In Properties of Materials. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198520757.003.0012.

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Stress (force per unit area) and strain (change in length per unit length) are both symmetric second rank tensors like the dielectric constant, but they are not property tensors. Experimenters are at liberty to apply different types of forces to a specimen, therefore there is no reason that the stress tensors (and the resulting strain tensor) must conform to the crystal symmetry. Stress and strain tensors do not obey Neumann’s Law. They are sometimes called field tensors to distinguish them from property tensors like the dielectric constant. Property tensors are relationships between field ten
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Patil, Shalini. "VISCO ELASTIC BEHAVIOUR OF POLYMERS." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 1. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bdcs1ch11.

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In Polymeric materials mechanical properties exhibit two ideal special cases hence these are known as visco elastic materials. The property of stress is a function of strain and function of time for visco elastic material. The very common characteristic features of visco elastic materials are a time dependent strain response to a constant stress and a constant strain response to a time dependent stress. When the applied stress is less or zero to the materials, the material recovers slowly with a time. This type of effects also observed in metals at very high temperatures whereas in plastics th
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Kawabe S., Kongkitkul W., Hirakawa D., and Tatsuoka F. "Rate-dependent behaviour of clay during cyclic 1D compression." In Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering. IOS Press, 2009. https://doi.org/10.3233/978-1-60750-031-5-303.

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Drained constant-rate-of-strain one-dimensional compression tests at different strain rates with and without large unload/reload cycles and many sustained loading (SL) stages, as well as standard consolidation tests, were performed on reconstituted and undisturbed soft clays. Significantly rate-dependent stress-strain behaviour of Isotach type, not due to delayed dissipation of excessive pore water pressure but due to the viscous properties of clay, was observed. The creep axial strain rate at SL stages while otherwise the effective axial stress &amp;sigma;&amp;prime;awas increasing at positiv
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Khanmamadova, E. A., and R. G. Abaszade. "Advanced Design, Materials, and Manufacturing Techniques for Next-Generation Antennas." In Advances in Mechatronics and Mechanical Engineering. IGI Global, 2024. https://doi.org/10.4018/979-8-3693-6035-4.ch002.

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This chapter explores the fabrication techniques for microstrip structures in antenna design, focusing on their application in modern communication systems. It explores traditional methods like lithography, CNC milling and emerging technologies like SSAIL and laser ablation. The research focuses on broadband, omnidirectional antennas, particularly those using BiT ECM technology, which promises better miniaturization and performance in microwave communications. The study also investigates advancements in dielectric resonator antennas for 2.4 GHz applications, revealing problems in dielectric co
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Moualhi, Khouloud, and Mouldi Zouaoui. "Conduction Mechanisms and Permittivity: Conductivity Correlation in the Gd-Based Perovskite Structure." In Advanced Ceramics Materials - Emerging Technologies [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1007457.

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This chapter investigates the dielectric properties of GdCa2Cu3Oδ, a recently discovered material showcasing colossal permittivity. Through a detailed examination, we explore the original mechanisms behind its remarkable dielectric behavior, crystal structure, and microstructure properties. The temperature-dependent dielectric measurements revealed a constant permittivity value at room temperature (104), indicative of colossal permittivity behavior. We discuss the origin of this phenomenon in terms of intrinsic and extrinsic mechanisms, including defect-related effects, charge carrier hopping,
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Conference papers on the topic "Strain dependent dielectric constant"

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Holzleitner, S., W. Kranister, G. Mori, and P. Schmuki. "Applying a Multi Method Approach to Chloride Induced SCC of Two Austenitic Cr-Ni-Mo-N Stainless Steels." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08486.

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Abstract There is a large number of investigation methods in chloride induced stress corrosion cracking (CISCC) research. In many papers only a very limited number of testing methods is applied. The goal of the present paper is to show results of several testing methods on one specific corrosion system. Constant load tests (CLT) at different polarization conditions, slow strain rate tests (SSRT) at different strain rates, scanning electron microscopy (SEM) and field emission scanning electron microscopy (FE-SEM) for fracture surface characterization, energy filtered transmission electron micro
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Audouard, Jean-Pierre, and Michel Verneau. "Evaluation of the Corrosion Resistance of High Nitrogen Containing Stainless Steels in Chloride and H2S/CO2 Environments." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97036.

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Abstract Stainless steels can be considered as good candidates for use in H2S-CO2 containing gas fields provided that their limits of use are accurately known. As the main problem for these materials is the resistance to stress corrosion cracking, laboratory tests were conducted on various stainless steels either austenitics or duplexes in NACE TM 01-77 solution as well as in simulating field environments. The combination of Constant Load and Slow Strain Rate tests results permitted stating conservative limiting environmental conditions for SCC expressed as PH2S and temperature values. Moreove
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Kagay, Brian, Kip Findley, and Steve Coryell. "Comparison of Slow Strain Rate, Incremental Step Load, and Rising Displacement Hydrogen Embrittlement Testing of UNS N07718." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11535.

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Abstract The influence of loading mode and specimen geometry on the measured hydrogen embrittlement susceptibility of UNS N07718 (alloy 718) has been assessed. Slow strain rate (SSR) experiments were performed with smooth specimens, while incremental step load (ISL) testing and rising displacement (RD) testing were performed on circular notch tensile (CNT) specimens with cathodic hydrogen charging. Several microstructures of alloy 718 with different strength levels and amounts of grain boundary δ phase precipitation were evaluated. Fracture modes were also evaluated with scanning electron micr
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Malviya, P. S., and N. Yadav. "Colloidal effects on modulational instability in semiconductor plasma having strain dependent dielectric constant." In EMERGING INTERFACES OF PHYSICAL SCIENCES AND TECHNOLOGY 2019: EIPT2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000472.

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Jackson, S. A. "Piezobirefringence and phase matching for second harmonic generation in strained-layer superlattices." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.wb2.

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In strained-layer superlattices (SLS's), lattice-mismatch induced strain in pseudomorphically grown structures gives rise to a preferred axis because of tetragonal distortion, making the SLS a birefringent material. As a consequence, the indices of refraction for the ordinary and the extraordinary rays are different. They vary as a function of strain. The indices of refraction may be derived from the complex dielectric constant. The imaginary part of the dielectric constant may be calculated from a knowledge of allowed energy states in the system. In the presence of strain, the energy levels c
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Gonzalez, David, Brittany Newell, Jose Garcia, Lucas Noble, and Trevor Mamer. "3-D Printing of Dielectric Electroactive Polymer Actuators and Characterization of Dielectric Flexible Materials." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8011.

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Dielectric electroactive polymers are materials capable of mechanically adjusting their volume in response to an electrical stimulus. However, currently these materials require multi-step manufacturing processes which are not additive. This paper presents a novel 3D printed flexible dielectric material and characterizes its use as a dielectric electroactive polymer (DEAP) actuator. The 3D printed material was characterized electrically and mechanically and its functionality as a dielectric electroactive polymer actuator was demonstrated. The flexible 3-D printed material demonstrated a high di
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Cho, Jeong Ho. "Ferroelectric Properties of Lead-free Non-stoichiometric Bi0.5+x(Na0.78K0.22)0.5-3xTiO3 Ceramics for Energy Conversion." In 3rd World Conference on Engineering, Technology and Applied Science. Eurasia Conferences, 2024. https://doi.org/10.62422/978-81-974314-7-0-010.

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In order to create A-site vacancy, lead-free Bi0.5+x(Na0.78K0.22)0.5-3xTiO3 ceramics were synthesized by a conventional solid state reaction method. In this paper, we investigated the dielectric and electrical properties of Bi0.5+x(Na0.78K0.22)0.5-3xTiO3 ceramics with an excess Bi3+and a deficiency of Na+ and K+. The structure and morphology of Bi0.5+x(Na0.78K0.22)0.5-3xTiO3 ceramics were characterized by X-ray diffraction and field emission scanning electron microscopy. Also the temperature dependent dielectric constant and loss and the electric field dependent polarization and strain were me
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York, Alexander, Micah Hodgins, and Stefan Seelecke. "Electro-Mechanical Analysis of a Biased Dielectric EAP Actuator." In ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2009. http://dx.doi.org/10.1115/smasis2009-1441.

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Dielectric Electro-Active Polymers (DEAP’s) can achieve substantial deformation (&amp;gt;300% strain) while, compared to their ionic counterparts, sustaining large forces. This makes them attractive for various actuation and sensing applications such as light weight and energy efficient valve and pumping systems. This paper provides a systematic experimental investigation of the quasi-static and dynamic electro-mechanical properties of a commercially available dielectric EAP actuator. In order to completely characterize the fully coupled behavior force vs. displacement measurements at various
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Kim, Hyun-Tai, Kai Liu, Yong-Taek Lee, Gwang Kim, Billy Ahn, and Robert C. Frye. "Structure-dependent dielectric constant in thin laminate substrates." In 2011 IEEE 61st Electronic Components and Technology Conference (ECTC). IEEE, 2011. http://dx.doi.org/10.1109/ectc.2011.5898743.

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Nan Chen, Bo Gao, Shu Zhou, Yu Tian, and Ling Tong. "Development of a temperature dependent dielectric constant measurement system." In 2015 IEEE 6th International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE). IEEE, 2015. http://dx.doi.org/10.1109/mape.2015.7510403.

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Reports on the topic "Strain dependent dielectric constant"

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Friedman, Shmuel, Jon Wraith, and Dani Or. Geometrical Considerations and Interfacial Processes Affecting Electromagnetic Measurement of Soil Water Content by TDR and Remote Sensing Methods. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580679.bard.

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Time Domain Reflectometry (TDR) and other in-situ and remote sensing dielectric methods for determining the soil water content had become standard in both research and practice in the last two decades. Limitations of existing dielectric methods in some soils, and introduction of new agricultural measurement devices or approaches based on soil dielectric properties mandate improved understanding of the relationship between the measured effective permittivity (dielectric constant) and the soil water content. Mounting evidence indicates that consideration must be given not only to the volume frac
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Oliynyk, Kateryna, and Matteo Ciantia. Application of a finite deformation multiplicative plasticity model with non-local hardening to the simulation of CPTu tests in a structured soil. University of Dundee, 2021. http://dx.doi.org/10.20933/100001230.

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In this paper an isotropic hardening elastoplastic constitutive model for structured soils is applied to the simulation of a standard CPTu test in a saturated soft structured clay. To allow for the extreme deformations experienced by the soil during the penetration process, the model is formulated in a fully geometric non-linear setting, based on: i) the multiplicative decomposition of the deformation gradient into an elastic and a plastic part; and, ii) on the existence of a free energy function to define the elastic behaviour of the soil. The model is equipped with two bonding-related intern
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Brosh, Arieh, David Robertshaw, Yoav Aharoni, Zvi Holzer, Mario Gutman, and Amichai Arieli. Estimation of Energy Expenditure of Free Living and Growing Domesticated Ruminants by Heart Rate Measurement. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580685.bard.

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Research objectives were: 1) To study the effect of diet energy density, level of exercise, thermal conditions and reproductive state on cardiovascular function as it relates to oxygen (O2) mobilization. 2) To validate the use of heart rate (HR) to predict energy expenditure (EE) of ruminants, by measuring and calculating the energy balance components at different productive and reproductive states. 3) To validate the use of HR to identify changes in the metabolizable energy (ME) and ME intake (MEI) of grazing ruminants. Background: The development of an effective method for the measurement of
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