Thematische Bibliographien / Geometric capacitance

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Auswahl der wissenschaftlichen Literatur zum Thema „Geometric capacitance“

Autor: Grafiati

Veröffentlicht am 7. Juni 2025

Zuletzt aktualisiert am 2. August 2025

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Zeitschriftenartikel zum Thema "Geometric capacitance"

Rahman, Md Mosaddequr, and Sazzadur Chowdhury. "Square Diaphragm CMUT Capacitance Calculation Using a New Deflection Shape Function." Journal of Sensors 2011 (2011): 1–12. http://dx.doi.org/10.1155/2011/581910.

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A new highly accurate closed-form capacitance calculation model has been developed to calculate the capacitance of capacitive micromachined ultrasonic transducers (CMUTs) built with square diaphragms. The model has been developed by using a two-dimensional polynomial function that more accurately predicts the deflection curve of a square diaphragm deformed under the influence of a uniform external pressure and also takes account of the fringing field capacitances. The model has been verified by comparing the model-predicted deflection profiles and capacitance values with experimental results p

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Connor, Paula, Jona Schuch, Bernhard Kaiser, and Wolfram Jaegermann. "The Determination of Electrochemical Active Surface Area and Specific Capacity Revisited for the System MnOx as an Oxygen Evolution Catalyst." Zeitschrift für Physikalische Chemie 234, no. 5 (2020): 979–94. http://dx.doi.org/10.1515/zpch-2019-1514.

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AbstractIn the last decades several different catalysts for the electrochemical water splitting reaction have been designed and tested. In so-called benchmark papers they are compared with respect to their efficiency and activity. In order to relate the different catalyst to each other the definition of well-defined procedures is required. Two different methods are mainly used: Either the normalization with respect to the geometric surface area or to the catalyst loading. Most often only one of these values is available for a sample and the other one cannot be estimated easily. One approach in

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Elvin, Niell, Alex Elvin, and Bruno Zamorano Senderos. "Capacitance changes in thin piezoelectric transducers embedded in isotropic host materials." Journal of Intelligent Material Systems and Structures 29, no. 5 (2017): 816–29. http://dx.doi.org/10.1177/1045389x17721045.

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Constraining a piezoelectric material from freely expanding causes a reduction in capacitance. This reduction in capacitance has implications in energy harvesting, active vibration control, and ultrasonic sensing. This article investigates the reduction in capacitance when a thin piezoelectric disk is embedded in an isotropic host material. Both simplified (one-dimensional axisymmetric) and computational (finite element two-dimensional axisymmetric) analyses have been presented and used to calculate the expected reduction in capacitance of thin embedded piezoelectric disks for a number of cera

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Matiss, I. "Non-Contact Measurement of the Thickness and Dielectric Parameters of Dielectric Plates and Shells." Latvian Journal of Physics and Technical Sciences 52, no. 2 (2015): 49–58. http://dx.doi.org/10.1515/lpts-2015-0011.

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Abstract The paper describes a new approach for non-destructive testing of the structural and geometric parameters of dielectric objects using capacitance techniques. The novelty of this approach lies in the design of a capacitance sensor comprising an array of electrodes with changeable potential distribution on them during a measurement process. This makes solvable the problem of measuring independently three input parameters. To demonstrate the capabilities of the developed measurement algorithms, the case studies based on computer simulation have been carried out.

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Kumar, N., and A. M. Jayannavar. "Statistics of Mesoscopic Fluctuations of Quantum Capacitance." Modern Physics Letters B 11, no. 02n03 (1997): 53–56. http://dx.doi.org/10.1142/s0217984997000086.

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The Thouless formula (G = (e2/h)(E c /Δ) for the two-probe dc conductance G of a d-dimensional mesoscopic cube is re-analysed to relate its quantum capacitance C Q to the reciprocal of the level spacing Δ. To this end, the escape time-scale τ occurring in the Thouless correlation energy (E c = ℏ/τ) is interpreted as the time constantτ = RC Q with RG ≡ 1, giving at once C Q = (e2/2π Δ). Thus, the statistics of the quantum capacitance is directly related to that of the level spacing, which is well known from the Random Matrix Theory for all the three universality classes of statistical ensembles

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Goldshtein, Alexander, Galina Vavilova, Alexander Rumkin, and Oldrich Starý. "Detection of Insulation Defects in Automated In-Process Testing of Electric Wire during its Extrusion." Materials Science Forum 942 (January 2019): 141–50. http://dx.doi.org/10.4028/www.scientific.net/msf.942.141.

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The paper describes the electro-capacitive method for monitoring wire capacitance, which is implemented using the CAP-10 device, employed for in-process testing of the single core electric wire capacitance. Focus is made on the operating principle of the CAP-10 device. The possibility of using the CAP-10 device for detecting local defects in wire insulation is proved. Insulation defects such as foreign inclusions in the form of copper shavings, air cavities inside insulation and those at the core–insulation boundary are modeled. The impact of the defect geometric parameters on the wire capacit

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Gutten, Miroslav, Daniel Korenciak, Roman Konarik, and Jan Kanuch. "Comparative Analysis of Distribution Transformers with Varying Ratings and Insulation States via Frequency Domain Spectroscopy and Capacitance Ratio." Applied Sciences 15, no. 9 (2025): 4715. https://doi.org/10.3390/app15094715.

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This paper presents a comparative analysis of distribution transformers with varying power ratings and insulation conditions using Frequency Domain Spectroscopy (FDS). The investigation was conducted both by comparing transformers with different performance ratings (from 100 to 1000 kVA) and insulation quality at a constant ambient temperature, and by evaluating insulation properties of a transformer across varying temperatures. The FDS method allows for separate assessments of oil quality and moisture content in solid insulation. An advantage of using capacitance measured by FDS for insulatio

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Labidi, Mondher, and Fethi Choubani. "Electrical equivalent model of meta-materials based on circular SRR." International Journal of Microwave and Wireless Technologies 8, no. 6 (2015): 909–13. http://dx.doi.org/10.1017/s1759078715000604.

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This work focuses on the circuit modeling and full-wave analysis behavior of circular split ring resonator (SRR). We investigate an equivalent circuit model that allows calculating the resonant frequency from the geometric parameters. Equivalent LC parameters of inductance and capacitance are derived using conformal mapping and constitutive equations. Lumped element equivalent circuit models of resonator are investigated highlighting the behavior of inductance and capacitance. In order to validate our proposed analytical LC model, a comparison of theoretical and simulation results has been per

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Fang Gong, Hao Yu, Lingli Wang, and Lei He. "A Parallel and Incremental Extraction of Variational Capacitance With Stochastic Geometric Moments." IEEE Transactions on Very Large Scale Integration (VLSI) Systems 20, no. 9 (2012): 1729–37. http://dx.doi.org/10.1109/tvlsi.2011.2161352.

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Xu, Donghui. "Geometric amplitude factor in anLCRcircuit with time-dependent inductance, capacitance and resistance." Journal of Physics A: Mathematical and General 35, no. 45 (2002): L669—L671. http://dx.doi.org/10.1088/0305-4470/35/45/106.

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Dissertationen zum Thema "Geometric capacitance"

Zhuang, Wei. "A 3-d capacitance extraction algorithm based on kernel independent hierarchical method and geometric moments." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/5794.

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A three dimensional (3-D) capacitance extraction algorithm based on a kernel independent hierarchical method and geometric moments is described. Several techniques are incorporated, which leads to a better overall performance for arbitrary interconnect systems. First, the new algorithm hierarchically partitions the bounding box of all interconnect panels to build the partition tree. Then it uses simple shapes to match the low order moments of the geometry of each box in the partition tree. Finally, with the help of a fast matrix-vector product, GMRES is used to solve the linear system. Experim

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Omer, Ahmed Adan 1964. "Capacitance calculations for three-dimensional VLSI interconnection geometries." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/291396.

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An integral equation formulation for the calculation of the capacitance of three-dimensional VLSI geometries is presented. A proper combination of 2D and 3D methods is used for efficient numerical computations. The method of moments is used for the solution of the integral equation. In addition, Green's functions that satisfy the boundary conditions at the dielectric interfaces are implemented in order to minimize the number of unknowns involved in the numerical solution. The mathematical formulation presented here and the associated computer program are appropriate for obtaining the capacitan

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Chang, Chee Kean. "SPARSE DIRECT SOLUTION METHODS FOR CAPACITIVE EXTRACTION PROBLEMS ON CLOSELY-SPACED GEOMETRIES WITH HIGH ASPECT RATIOS." UKnowledge, 2017. http://uknowledge.uky.edu/ece_etds/108.

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The method of moment (MoM) [1] is a widely used method in electromagnetics to solve static and dynamic electromagnetic problems on varying geometries. However, in closely spaced geometries coupled with large aspect ratios, e.g. a large parallel plate capacitor with very small separation gap, the problem exhibits several challenges. Firstly, the close proximity of the field and source elements presents problems with convergence in numerical evaluations of the interactions between them. Secondly, the aspect ratio of the geometry gives an approximation whereby to far field points, the source cont

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Buchteile zum Thema "Geometric capacitance"

Yu, Wenjian, and Xiren Wang. "Statistical Capacitance Extraction Based on Continuous-Surface Geometric Model." In Advanced Field-Solver Techniques for RC Extraction of Integrated Circuits. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54298-5_9.

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Wieleba Paweł and Sikora Jan. "“BEMLAB” – Universal, Open source, Boundary Element Method library applied in Micro-Electro-Mechanical Systems." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-750-5-173.

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BEMLAB [1] is the open source project implementing Boundary Element Method (BEM) [2,3] comprehensively. BEMLAB binary packages and the source code are distributed under GNU LGPL (Lesser General Public License) license terms. The project provides universal library and the reference application, which is the easiest way for solving problems using BEM. The article presents example BEMLAB application in modelling comb capacitors used in Micro-Electro-Mechanical Systems (MEMS). Finally capacitance will be calculated using BEM results. Particularly Asymptotic Boundary Conditions (ABC) will be used t

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Atesmen, M. Kemal. "A Finite Difference Method to Solve 2-Dimensional Transient Heat Transfer Equation." In Case Studies in Transient Heat Transfer With Sensitivities to Governing Variables. ASME, 2023. http://dx.doi.org/10.1115/1.886786_ch9.

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The lumped capacitance method and analytical solutions cannot be applied to transient and multi-dimensional heat transfer problems with complicated geometries and boundary conditions. In this chapter, we will cover the explicit finite difference method application to a 2-dimensional transient heat transfer problem with multiple boundary conditions. Let us investigate the cooling of a stainless- steel rectangular prism bar with 1 m by 1 m square insulated ends from an initial temperature of 500 C down to 100 C at its center. The rectangular prism bar is subject to free and forced convection hea

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Sarid, Dror. "Mechanical Properties of Levers." In Scanning Force Microscopy. Oxford University PressNew York, NY, 1994. http://dx.doi.org/10.1093/oso/9780195092042.003.0001.

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Abstract The heart of a scanning force microscope is a sharp tip that interacts with a force at the surface of a sample. The tip, therefore, must have certain material properties, such as conductivity and permeability, that determine the strength of the interaction. The tip is mounted on a flexible beam whose geometrical and material properties make it possible to probe the force with a high sensitivity. The interaction of the tip with the force is sensed by the resultant deflection of the beam on which the tip is mounted. The role of the beam is to translate the force acting on the tip into a

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Konferenzberichte zum Thema "Geometric capacitance"

Du, Gang, Bin Hao, Sen Yang, et al. "The Relationship of the Partial Capacitances with Overhead Line Geometric Parameters." In 2025 7th International Conference on Information Science, Electrical and Automation Engineering (ISEAE). IEEE, 2025. https://doi.org/10.1109/iseae64934.2025.11042108.

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Bi, Yu, P. Harpe, and N. P. van der Meijs. "Efficient sensitivity-based capacitance modeling for systematic and random geometric variations." In 2011 16th Asia and South Pacific Design Automation Conference ASP-DAC 2011. IEEE, 2011. http://dx.doi.org/10.1109/aspdac.2011.5722262.

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Gridchin, Aleksandr V., Aleksei N. Koleda, Evgenii S. Barbin, Tamara G. Nesterenko, and Vladimir A. Kolchuzhin. "Geometric Parameterized Macromodel of Uniaxial Capacitance Accelerometer Based on Modal Superposition." In 2023 IEEE XVI International Scientific and Technical Conference Actual Problems of Electronic Instrument Engineering (APEIE). IEEE, 2023. http://dx.doi.org/10.1109/apeie59731.2023.10347838.

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Yu, Wenjian, Chao Hu, and Wangyang Zhang. "Parallel statistical capacitance extraction of on-chip interconnects with an improved geometric variation model." In 2011 16th Asia and South Pacific Design Automation Conference ASP-DAC 2011. IEEE, 2011. http://dx.doi.org/10.1109/aspdac.2011.5722272.

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Costa, H. L., and I. M. Hutchings. "Lubricated Sliding Wear of Textured Surfaces." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63819.

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In this paper, the effects of some geometric characteristics of surfaces textured by photochemical etching on their lubricated sliding behaviour were analysed. Reciprocating tests with sinusoidal velocity variation against cylindrical counterbodies were used. An estimate of the lubricant film thickness was obtained from capacitance measurements. Values of film capacitance, film thickness and coefficient of friction were computed as a function of sliding velocity, averaged over a large number of consecutive strokes after the running-in period. Patterns composed of circles with different fractio

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Zeng, Xiangyin, Jiangqi He, and Baoshu Xu. "Accelerated Convergence for Lumped-Elements Based on-Package RF Passives Design by Using Curve Fitted Formula." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73308.

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Integrating passive components on package is getting more and more attractive. To speed up the lumped-elements-based RF functional blocks, like filters, matching networks and so on, fast synthesis of these lumped elements is necessary. Traditional synthesis method like try-error-try again is not only time consuming but also hard to find an optimal one. This is especially true for spiral inductor design due to many tunable parameters. Design based on library has also some disadvantages, such as lack of information of manufacture tolerances’ impact. This paper describes an optimal synthesis meth

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Moretti, Giacomo, Gastone Pietro Papini Rosati, Marco Alves, Manuel Grases, Rocco Vertechy, and Marco Fontana. "Analysis and Design of an Oscillating Water Column Wave Energy Converter With Dielectric Elastomer Power Take-Off." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42103.

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In this paper, we present a concept of near/off-shore Oscillating Water Column (OWC) Wave Energy Converter (WEC) that is equipped with a Power Take Off (PTO) unit based on Dielectric Elastomer Generators (DEGs). DEGs are soft/deformable generators with variable capacitance able to directly convert the mechanical energy that is employed for their deformation into electrostatic energy. The proposed WEC is based on an existing tubular collector chamber of an OWC system designed by the company Sendekia, that is combined with an Inflatable Circular Diaphragm (ICD) DEG. This simplified design presen

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Baratta, Mirko, Andrea Emilio Catania, and Alessandro Ferrari. "Hydraulic Circuit Design Keys to Remove the Dependence of the Injected Fuel Amount on Dwell Time in Multi-Jet C.R. Systems." In ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ices2006-1426.

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In Multijet Common Rail (C.R.) systems, the capability to manage multiple injections with full flexibility in the choice of the dwell time (DT) between consecutive solenoid current pulses is one of the most relevant design targets. Pressure oscillations triggered by the nozzle closure after each injection event induce disturbances in the amount of fuel injected during subsequent injections. This causes a remarkable dispersion in the mass of fuel delivered by each injection shot when DT is varied. The present works aims at investigating hydraulic circuit design keys to improve multiple injectio

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Prokhorov, E., J. Gonzalez-Hernandez, N. B. Gorev, I. F. Kodzhespirova, and Yu A. Kovalenko. "Capacitance-voltage profiling of GaAs metal-semiconductor field-effect transistors and geometrical interelectrode capacitance." In 1999 9th International Crimean Microwave Conference 'Microwave and Telecommunication Technology'. Conference Proceedings. IEEE, 1999. http://dx.doi.org/10.1109/crmico.1999.815229.

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Bi, Yu, K. van der Kolk, D. Ioan, and N. P. van der Meijs. "Sensitivity computation of interconnect capacitances with respect to geometric parameters." In 2008 IEEE 17th Conference on Electrical Performance of Electronic Packaging (EPEP). IEEE, 2008. http://dx.doi.org/10.1109/epep.2008.4675916.

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Berichte der Organisationen zum Thema "Geometric capacitance"

Nabors, K., and J. K. White. A Fast Multipole Algorithm for Capacitance Extraction of Complex 3-D Geometries. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada208374.

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