Relevant bibliographies by topics / Dielectric measurement

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Dielectric measurement'

Author: Grafiati
Published: 4 June 2021
Last updated: 22 February 2023

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Journal articles on the topic "Dielectric measurement"

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Kundenko, M., O. Egorova, I. Shinkarenko, I. Boroday, and A. Kundenko. "MEASUREMENT OF DIELECTRIC PERMEABILITY OF BIOLOGICAL SUBSTANCES." UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE 99, no. 3 (2018): 89–93. http://dx.doi.org/10.31521/2313-092x/2018-3(99)-15.

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Mandrić Radivojević, Vanja, Slavko Rupčić, Mario Srnović, and Goran Benšić. "Measuring the Dielectric Constant of Paper Using a Parallel Plate Capacitor." International journal of electrical and computer engineering systems 9, no. 1 (2018): 1–10. http://dx.doi.org/10.32985/ijeces.9.1.1.

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This article is a result of measuring the dielectric constant of a dielectric used in studying the influence of dielectrics on the antennae reflection coefficients. A paper having a density of 0.797 g/cm3, moisture content of 0% and temperature of 210C, is used as a dielectric. Although the literature provides a lot of data on the dielectric properties of wood and paper, without direct measurement of the dielectric constant it is impossible to know its amount for the dielectric used in the defined frequency range. Dielectric constant measurements are performed in the frequency range from 100 Hz to 100 kHz, while the frequency range of its impact on the aperture antenna reflection coefficients is up to 2 GHz. The frequency range from 100 KHz to 10 GHz is interpolated and fitted by using measurements and available literature data and by respecting physical influences and phenomena and functional changes of the dielectric constant of paper within the given range
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Grigoriev, Andrey D. "NEW WAVEGUIDE METHOD FOR DIELECTRIC PARAMETER MEASUREMENT." Journal of the Russian Universities. Radioelectronics, no. 5 (December 6, 2018): 33–38. http://dx.doi.org/10.32603/1993-8985-2018-21-5-33-38.

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Perfect knowledge of dielectric parameters is necessary for its application in various devices. In spite of the whole range of measurement techniques, their practical implementation in the microwave frequency band runs into some difficulties. This article describes a new method for nonmagnetic dielectrics permittivity and loss tangent measurement in the microwave frequency band. A dielectric specimen slab is placed in the short-circuited waveguide section normal to its axis and fills the whole cross-section of the waveguide at approximately quarter wavelength from its short-circuited endpoint. By means of the vector network analyzer the waveguide section reflection factor is measured. Objective function is de-termined as difference between calculated and measured module and phase of the reflection factor. Specific code for ob-jective function calculation and its minimization is worked out. Minimization of this function by varying dielectric parameters makes it possible to find real values of these parameters. The method needs no de-embedding and can be used with non-calibrated waveguide-to-coax transitions. Also it is less sensitive to the noise component of reflected signal. The testing results show that new method’s error does not exceed 0.2 % for relative permittivity and 1% for dielectric loss tangent.
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Krupka, Jerzy. "Microwave Measurements of Electromagnetic Properties of Materials." Materials 14, no. 17 (September 6, 2021): 5097. http://dx.doi.org/10.3390/ma14175097.

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A review of measurement methods of the basic electromagnetic parameters of materials at microwave frequencies is presented. Materials under study include dielectrics, semiconductors, conductors, superconductors, and ferrites. Measurement methods of the complex permittivity, the complex permeability tensor, and the complex conductivity and related parameters, such as resistivity, the sheet resistance, and the ferromagnetic linewidth are considered. For dielectrics and ferrites, the knowledge of their complex permittivity and the complex permeability at microwave frequencies is of practical interest. Microwave measurements allow contactless measurements of their resistivity, conductivity, and sheet resistance. These days contactless conductivity measurements have become more and more important, due to the progress in materials technology and the development of new materials intended for the electronic industry such as graphene, GaN, and SiC. Some of these materials, such as GaN and SiC are not measurable with the four-point probe technique, even if they are conducting. Measurement fixtures that are described in this paper include sections of transmission lines, resonance cavities, and dielectric resonators.
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Russell, P. E., Z. J. Radzimski, D. A. Ricks, and J. P. Vitarelli. "Electron beam testing of multilevel metal integrated circuits." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 830–31. http://dx.doi.org/10.1017/s0424820100088464.

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Fundamentally, voltage contrast is a well established technique for determination of voltages on metal surface which can be directly probed with an electron beam. However, actual integrated circuits (IC) consist of two or more conducting layers (metal and doped polysilicon) separated by dielectrics and covered by a dielectric passivation layer. Our work has addressed: i) the removal of dielectric layers (depassivation) by reactive ion etching (RIE) or selectively by focused ion beam etching to allow access to exposed metal lines; ii) modelling effort to understand how the materials and geometric parameters of multilevel IC's affect voltage contrast measurements, and iii) improvements in retarding field spectrometer based measurement techniques.
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Novák, Ján. "Electric Properties Measurement of Lentil." Acta Technologica Agriculturae 21, no. 1 (March 1, 2018): 18–23. http://dx.doi.org/10.2478/ata-2018-0004.

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AbstractThis paper contains the results of the electric properties measurement of lentil set. Electric measurements with use of these materials are of fundamental importance in relation to the analysis of quantity of absorbed water and dielectric heating characteristics. The aim of this paper was to perform the measurements of conductivity, dielectric constant and loss tangent on samples of lentil, the electrical properties of which had not been sufficiently measured. Measurements were performed under various moisture contents, and the frequency of electric field ranged from 1 MHz to 16 MHz, using a Q meter with coaxial probe. It was concluded that conductivity, relative permittivity and loss tangent increased with an increase in moisture content, and dielectric constant and loss tangent decreased as the frequency of electric field increased.
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Yokomizo, Satoshi, Takuya Hoshina, Hiroaki Takeda, Katsuya Taniguchi, Youichi Mizuno, Hirokazu Chazono, Osamu Sakurai, and Takaaki Tsurumi. "Evolution of Internal Stress and Influence on Dielectric Properties by Number of Dielectric Layers in MLCC." Key Engineering Materials 445 (July 2010): 31–34. http://dx.doi.org/10.4028/www.scientific.net/kem.445.31.

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We researched the phenomenon that the permittivity of dielectric layers in multilayer ceramic capacitor (MLCC) increases with the number of dielectric layers. Finite element method (FEM) shows that the internal residual stress in MLCC was generated by the difference of thermal expansion coefficient between internal electrodes and dielectric layers. We developed a electric measurement system with applying external stress for understanding the stress influence on dielectric properties. The compressive stress along electric field increased the polarization. The polar nano regions (PNRs) in shell composition dielectrics were easily influenced by stress. Based on these results, the relationship between the number of dielectric layers and their permittivity in MLCCs was explained.
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Lee, Chih-Kuo, Jack McGhee, Christos Tsipogiannis, Shiyu Zhang, Darren Cadman, Athanasios Goulas, Tom Whittaker, et al. "Evaluation of Microwave Characterization Methods for Additively Manufactured Materials." Designs 3, no. 4 (September 25, 2019): 47. http://dx.doi.org/10.3390/designs3040047.

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Additive manufacturing (AM) has become more important and common in recent years. Advantages of AM include the ability to rapidly design and fabricate samples much faster than traditional manufacturing processes and to create complex internal geometries. Materials are crucial components of microwave systems and proper and accurate measurement of their dielectric properties is important to aid a high level of accuracy in design. There are numerous measurement techniques and finding the most appropriate method is important and requires consideration of all different factors and limitations. One limitation of sample preparation is that the sample size needs to fit in the measurement method. By utilizing the advantage of additive manufacturing, the material can be characterized using different measurement methods. In this paper, the additive manufacturing process and dielectric measurement methods have been critically reviewed. The test specimens for measuring dielectric properties were fabricated using fused filament fabrication (FFF)-based additive manufacturing and were measured using four different commercial dielectric properties measurement instruments including split post dielectric resonator (SPDR), rectangular waveguide, TE01δ cavity resonator, and open resonator. The measured results from the four techniques have been compared and have shown reasonable agreement with measurements within a 10 percent range.
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Hao, Jing, Xiangdong Xu, and Nathaniel Taylor. "An Electrode Setup for Non-contact Dielectric Response Measurement." Proceedings of the Nordic Insulation Symposium, no. 26 (August 8, 2019): 88–93. http://dx.doi.org/10.5324/nordis.v0i26.3284.

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The dielectric response measurement is a widely used technique for characterizing dielectric materials. However, the contact problems between samples and electrodes existing in the use of conventional electrode setup limit the accuracy of the measurement. This paper studies an electrode arrangement that avoids direct contacts of the sample with the electrodes on both sides. The edge effect of this arrangement is calculated by the FEM model. The equations to derive the complex permittivity are presented. The measurement instrument is described and the influence of the small voltage between its measure and guard terminals is analyzed. The error sensitivities of the non-contact and contact methods are compared. The results show that this electrode arrangement can be used to perform non-contact measurements, the edge effect of it is not significant, and the guard voltage is not an obstacle to obtain results with high accuracy. Overall, the non-contact electrode arrangement combined with the IDAX 300 can potentially improve the accuracy of dielectric response measurements although the non-contact methods can increase the sensitivities to errors.
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Cohick, Zane W., Samuel C. Schaub, Brad W. Hoff, Frederick W. Dynys, Anthony E. Baros, Maxwell Telmer, Haylie Orozco, et al. "High temperature W-band complex permittivity measurements of thermally cycled ceramic-metal composites: AlN:Mo with 0.25 to 4.0 vol% Mo from 25 °C to 1000 °C in air." Measurement Science and Technology 33, no. 1 (October 19, 2021): 015901. http://dx.doi.org/10.1088/1361-6501/ac2ca6.

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Abstract An apparatus for measuring the W-band (75–110 GHz) complex permittivity of dielectrics at 1000 °C was developed. This apparatus allows for measurements at approximately twice the temperature of previously published high temperature free-space measurement systems while maintaining similar precision. Challenges were addressed related to high temperature measurements, including temperature uniformity, the accuracy of temperature measurements, and preventing temperature related changes to mm-wave measurement systems. The details of complex permittivity extraction from the measured S-parameters are discussed. Sources of error related to permittivity measurement and mathematical models were identified and are discussed in detail herein. Thermally-cycled, mm-wave absorbing, aluminum nitride ceramic composites containing varying levels of molybdenum additives were measured over the range of 25 °C–1000 °C. These measurements were compared to the same composites before thermal cycling. It was found that ceramic composites are largely stable after thermal cycling in terms of dielectric properties despite the presence of visible surface modifications.
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Dissertations / Theses on the topic "Dielectric measurement"

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Chowdhry, Bhawani Shankar. "On-line measurement of dielectric relaxation." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277344.

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Coln, Michael Christian Wohnsen. "A high performance dielectric measurement system." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15251.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.
Includes bibliographical references.
by Michael Christian Wohnsen Coln.
Ph.D.
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Mercer, Sean R. "Online microwave measurement of complex dielectric constant." Doctoral thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/8342.

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This dissertation examines the problem of on-line measurement of complex dielectric constant for the purpose of dielectric discrimination or product evaluation using microwave techniques. Various methods of signal/sample interaction were studied and consideration was given to the problem of sorting irregularly shaped discrete samples. The use of microwave transmission and reflection measurements was evaluated. The signal reflection methods were deemed to be best suited to applications with constant geometry feed presentation ( ie. a continuous, homogeneous product stream with little variation in surface geometry).
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Umaña, Juan Antonio. "Measurement of complex dielectric permittivity of pavement materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0004/MQ32519.pdf.

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Stafford, Robert Bruce. "Time domain metrology for dielectric spectroscopy of particulates." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06062008-171849/.

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Waldron, Isaac James. "Ring Resonator Method for Dielectric Permittivity Measurements of Foams." Digital WPI, 2006. https://digitalcommons.wpi.edu/etd-theses/666.

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Dielectric permittivity measurements provide important input to engineering and scientific disciplines due to the effects of permittivity on the interactions between electromagnetic energy and materials. A novel ring resonator design is presented for the measurement of permittivity of low dielectric constant foams. A review of dielectric material properties and currently available measurement methods is included. Measurements of expanded polystyrene are reported and compared with results from the literature; good agreement between measurements and published results is shown.
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Helgeson, Anders. "Analysis of dielectric response measurement methods and dielectric properties of resin-rich insulation during processing." Doctoral thesis, KTH, Electric Power Systems, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2972.

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The dielectric diagnostic methods ofpolarisation/depolarisation currents and recovery voltage,which are time domain methods, and capacitance and tandmeasurements at different frequencies, which is a frequencydomain method, have been studied here. In the first part of thethesis, these measurement methods are analysed and evaluated.Three different types of insulation systems are included in theevaluation, oil/paper ("high" loss), resin-rich mica tape("medium" loss) and cross-linked polyethylene, XLPE, ("low"loss). These three systems have different dielectric responsein both shape and magnitude. Conclusions are made regardingchoice of measurement method depending on the dielectricresponse of the insulation material. Examples are also given ofhow to estimate conductivity and the dielectric responsefunction in the time domain from measurements with a finitecharging period.

Furthermore, relations between time domain and frequencydomain and the possibilities of Fourier transforming data fromone domain to the other are discussed. Fourier transforming isdone with a spline approximation technique, the Hamonapproximation and by fitting base functions that have analyticFourier transforms to measured data. These techniques arereviewed with special attention to the problem of estimatingdata outside the measurement window.

The second part of the thesis includes studies of the changeof dielectric properties during the manufacturing stage of acomposite insulation used in high voltage rotating machines.The insulation consists of a resin-rich mica tape with wovenglass or polyester film (PET) as carrier material. The aim wasto improve the quality of the composite insulation byoptimising the heat and pressure cycle used in theproduction.

A test cell has been designed and built to be able toprocess simple parallel plate samples under conditions similarto the factory process. With a maximum heating rate of 9°C/min and a maximum cooling rate of 20° C/min arbitrarytemperature paths could be programmed. All samples wereprocessed under static pressure in the MPa range.

The chemical reaction during curing of the resin-rich micatape was studied with differential scanning calorimetry (DSC).A simple reaction rate model was fit to the DSC measurementsmaking it possible to calculate the degree of curing during anarbitrary temperature path.

The change of dielectric response with time during curingunder different temperature paths and at a constant pressurewas monitored. Both laboratory experiments and factorymeasurements have been made and based on these measurements asimple network model is proposed to explain the measureddielectric response in terms of material structure and degreeof curing.

Keywords: Dielectric response, diagnostic methods, Hamon,Fourier transform, rotating-machine, insulation, resin-rich,mica tape, curing, process, monitoring, differential scanningcalorimetry (DSC), network model.

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Rimbi, Morris. "Wood microwave dielectric heating and measurement of material properties." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50231.

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Thesis (PhD)--University of Stellenbosch, 2004.
ENGLISH ABSTRACT: Microwave heating technology is extensively used in households, is well-established in certain industries and is being explored in others. lts attraction is that it is quick, energy efficient, clean and can be used to heat materials of both high and low thermal conductivities. Successful application of the technology requires knowledge of both material properties and microwave equipment. Commercial fixtures for measuring dielectric properties are not widely available and are usually created in-house. The domestic oven magnetron is easily available and can be used in prototype microwave systems but applicators for specific applications need development. This thesis covers three main areas, namely; dielectric measurement fixtures, microwave applicators and chokes, and drying of wood. The first part of the thesis presents four dielectric measurement fixtures, one commercial and the others in-house. The design and calibration of the in-house fixtures is presented. An intercomparison of the performance of the four fixtures is carried out by measuring the permittivities of well characterised dielectrics: teflon and perspex. The most convenient fixture is used to measure the dielectric properties of wood at different moisture contents. The second part covers the design of a slotted waveguide fed microwave applicator and a choke. The design of the slotted feed is carried out analytically with and without mutual coupling between the slots. A semi-empirical design using a finite element package is done independent of the analytical approach and the results are compared. The choke is rigorously characterised using a procedure which avoids de-embedding. The third and last section reports on the wood drying experiments carried out in the applicator, simulated and mapped heating patterns of drying wood, and a mock-up industrial wood drying facility.
AFRIKAANSE OPSOMMING: Mikrogolfverhittingstegnologie word wyd gebruik in huishoudings, is goed gevestig in sekere nywerhede en moontlike gebruike daarvan op ander gebiede word gedurig ondersoek. Die vernaamste voordele is dat dit vinnig, energiedoeltreffend en skoon is en dat dit gebruik kan word om materiale van beide hoë en lae termiese geleidingsvermoë te verhit. Suksesvolle toevoeging van die tegnologie vereis kennis van beide materiale-eienskappe en mikrogolftoerusting. Kommersiële apparaat vir die meet van diëlektriese eienskappe is nie wyd beskikbaar nie en word gewoonlik "binnenshuis" ontwikkel. Die huishoudelike mikrogolfoond magnetron is geredelik beskikbaar en kan in prototipe mikrogolfstelsels gebruik word, maar toevoegers geskik vir spesifieke gebruike moet ontwikkel word. Hierdie proefskrif dek drie hoofgebiede, naamlik: diëlektriese metingsapparaat, mikrogolftoevoegers en smoorders, en die droging van hout. Die eerste deel van die proefskrif handeloor vier diëlektriese metingsapparate, een kommersiëel en die ander "binnenshuis". Die ontwerp en kalibrasie van die "binnenshuis" apparate word aangebied. 'n Tussenvergelyking van die verrigtinge van die vier apparate word gedoen deur die meting van baie bekende diëlektrikums: teflon en perspex. Die mees gerieflike apparaat word gebruik vir die meet van die diëlektriese eienskappe van hout teen verskillend voginhoude. Die tweede deel dek die ontwerp van 'n smoorder en 'n mikrogolf toevoeger wat deur 'n gegleufde golfgeleier gevoer word. Die ontwerp van die gegleufde golfgeleier word beide met en sonder wedersydse koppeling tussen die gleuwe, analities gedoen. 'n Semi-empiriese ontwerp wat van 'n eindige-element pakket gebruik maak, is onafhanklik van die analitiese benadering gedoen. Die resultate word dan vergelyk. Die smoorder word deur 'n prosedure wat "de-embedding" vermy, streng gekarakteriseer. Die derde en laaste afdeling behandel die eksperimentele droging van hout binne die toevoeger. Simulasies en verhittingspatrone van die hout wat gedroog word, sowel as die "mock-up(model van die voorgestelde)" nywerheids houtdroogkamer, word gegee.
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Hartley, Jon. "Simultaneous structural and dielectric measurement of ammonia storage materials." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/89378/.

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The principal aims of this thesis are to design, build and experiment with simultaneous measurement systems, designed to measure ammonia adsorption in a wide range of sample materials. These simultaneous measurement systems will integrate dielectric spectroscopy methods with structural analysis techniques in order to obtain a more complete understanding of the dynamic adsorption processes that occur. Some of the new and most promising materials for ammonia storage applications are tested in this thesis in order to understand the possible strengths and weaknesses that these materials have in becoming used in real world applications. Dielectric spectroscopy in this thesis is achieved by using microwave resonant structures. These devices measure permittivity, dielectric losses and electrical conduction by way of the cavity perturbation technique. Structural analysis is conducted by way of neutron and X-ray diffraction, both of these measurement techniques give insight into the crystal structure of materials. With these two measurement techniques, changes in bulk material properties (measured from the dielectric spectroscopy) can be compared and contrasted with changes in the crystal structure (measured from the diffraction techniques). The materials tested within the simultaneous measurement systems were alkali earth and transition metal halides. On introducing gaseous ammonia to these materials, the dielectric properties and molecular structure changed. Using the combined information from multiple measurement techniques, a wide range of physical phenomena was able to be observed and analysed. This included assessment of the total amount of ammonia adsorbed, the amount of chemisorbed ammonia to physisorbed ammonia and if the ammoniated material was stable after the ammoniation process. Phase transformations involving coordination geometry were observed, as well as suppression of hole conduction processes due to ammoniation.
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Seligman, Jeffrey M. "Spectral Characterization of Dielectric Materials Using Terahertz Measurement Systems." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/566237.

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The performance of modern high frequency components and electronic systems are often limited by the properties of the materials from which they are made. Over the past decade, there has been an increased emphasis on the development of new, high performance dielectrics for use in high frequency systems. The development of these materials requires novel broadband characterization, instrumentation, and extraction techniques, from which models can be formulated. For this project several types of dielectric sheets were characterized at terahertz (THz) frequencies using quasi-optical (free-space) techniques. These measurement systems included a Fourier Transform Spectrometer (FTS, scalar), a Time Domain Spectrometer (TDS, vector), a Scalar Network Analyzer (SNA), and a THz Vector Network Analyzer (VNA). Using these instruments the THz spectral characteristics of dielectric samples were obtained. Polarization based anisotropy was observed in many of the materials measured using vector systems. The TDS was the most informative and flexible instrument for dielectric characterization at THz frequencies. To our knowledge, this is the first such comprehensive study to be performed. Anisotropy effects within materials that do not come into play at microwave frequencies (e.g. ~10 GHz) were found, in many cases, to increase measured losses at THz frequencies by up to an order of magnitude. The frequency dependent properties obtained during the course of this study included loss tangent, permittivity (index of refraction), and dielectric constant. The results were largely consistent between all the different systems and correlated closely to manufacturer specifications over a wide frequency range (325 GHz-1.5 THz). Anisotropic behavior was observed for some of the materials. Non-destructive evaluation and testing (NDE/NDT) techniques were used throughout. A precision test fixture was developed to accomplish these measurements. Time delay, insertion loss, and S-parameters were measured directly, from which loss tangent, index of refraction, and permittivity was extracted. The test materials were low-loss dielectric slabs ranging in thickness from 1-60 mils. The substrate sheets were PTFE, fiberglass, and epoxy-ceramic composite substrates. The other group was polyethylene plastic sheets (LDPE/HDPE/UMHW) and 3D printer Photopolymers. The results were verified by using several online THz spectral databases and compared to manufacturer data sheets. Permittivity and loss of some of the test samples varied as a function of polarization angle. 0 - 90 degrees of rotation were tested (i.e., H-V, and 45 degrees polarization). Inter-molecular scattering in the composite materials raised the loss considerably. This effect was verified. Standard, well documented, material types were selected for the project for best comparison. These techniques can also be applied to analyze newer substances such as nanodielectrics.
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Books on the topic "Dielectric measurement"

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Webb, William E. Measurement of dielectric properties of minerals at microwave frequencies. [Avondale, Md.]: U.S. Dept. of the Interior, Bureau of Mines, 1986.

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A, Davis William. Effective conductivity of wire mesh reflectors for space deployable antenna systems. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1994.

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Habib, H. Dielectric measurement techniques for assessment of plasma ablation in carbon fibre composites. Salford: Universityof Salford, 1991.

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Shacklock, J. R. T. A modified courtney test fixture for measurement of the dielectric properties of small resonators. Manchester: UMIST, 1998.

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Marennyĭ, A. M. Diėlektricheskie trekovye detektory v radiat͡s︡ionno-fizicheskom i radiobiologicheskom ėksperimente. Moskva: Ėnergoatomizdat, 1987.

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International, Conference on Dielectric Materials Measurements and Applications (5th 1988 University of Kent at Canterbury). Fifth International Conference on Dielectric Materials, Measurements, and Applications, 27-30 June 1988. London: The Institution, 1988.

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International Conference on Dielectric Materials, Measurements, and Applications (6th 1992 Manchester, England). Sixth International Conference on Dielectric Materials, Measurements, and Applications, 7-10 September 1992, venue, University of Manchester Institute of Science and Technology Conference Center, Manchester, UK. London: The Institution, 1992.

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International Conference on Properties and Applications of Dielectric Materials (2nd 1988 Beijing, China). Proceedings: Second International Conference on Properties and Applications of Dielectric Materials, Beijing, China, September 12-16, 1988. New York, NY (345 E. 47th St., New York 10017): Institute of Electrical and Electronics Engineers, Inc., 1988.

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International Conference on Dielectric Materials, Measurements, and Applications (7th 1996 University of Bath). Seventh International Conference on Dielectric Materials, Measurements, and Applications, 23-26 September 1996, venue, University of Bath, UK. London: The Institution, 1996.

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International Conference on Dielectric Materials, Measurements, and Applications (7th 1996 University of Bath). Seventh International Conference on Dielectric Materials, Measurements and Applications, 23-26 September 1996: Venue, University of Bath, UK. London: Institution of Electrical Engineers, 1996.

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Book chapters on the topic "Dielectric measurement"

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Breeze, Jonathan. "Measurement of Dielectric Properties." In Springer Theses, 43–67. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44547-2_3.

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Hauschild, Wolfgang, and Eberhard Lemke. "Measurement of Dielectric Properties." In High-Voltage Test and Measuring Techniques, 233–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-45352-6_5.

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Hauschild, Wolfgang, and Eberhard Lemke. "Measurement of Dielectric Properties." In High-Voltage Test and Measuring Techniques, 253–70. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97460-6_5.

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Borja, Juan Pablo, Toh-Ming Lu, and Joel Plawsky. "Measurement Tools and Test Structures." In Dielectric Breakdown in Gigascale Electronics, 21–26. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-43220-5_3.

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Schönhals, A., and F. Kremer. "Broadband Dielectric Measurement Techniques (10-6 Hz to 1012 Hz)." In Broadband Dielectric Spectroscopy, 35–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-56120-7_2.

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Gopinath, Anand. "Measurement of Dielectric Properties of Tissue." In Theory and Applications of Heat Transfer in Humans, 379–92. Chichester, UK: John Wiley & Sons Ltd, 2018. http://dx.doi.org/10.1002/9781119127420.ch19.

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Holmes, W. S., S. C. Mukhopadhyay, and S. G. Riley. "Dielectric Properties of Wood for Improved Internal Imaging." In Smart Sensors, Measurement and Instrumentation, 93–104. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32180-1_6.

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Malec, David. "Space Charge Measurement by the Laser-Induced Pressure Pulse Technique." In Dielectric Materials for Electrical Engineering, 271–88. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118557419.ch13.

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Torgovnikov, Grigoriy I. "Measurement of the Dielectric Properties of Wood." In Dielectric Properties of Wood and Wood-Based Materials, 41–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-77453-9_3.

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Ikezawa, S., M. Wakamatsu, and T. Ueda. "Laser-Induced Breakdown Spectroscopy Measurements for Dielectric Materials and Metals." In Smart Sensors, Measurement and Instrumentation, 105–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32180-1_7.

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Conference papers on the topic "Dielectric measurement"

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Michaeli, L., J. Saliga, P. Dolinsky, and I. Andras. "Compensation of dual slope ADC error caused by dielectric absorption." In 2017 11th International Conference on Measurement. IEEE, 2017. http://dx.doi.org/10.23919/measurement.2017.7983536.

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Harper, Elicia, Mahdi Haghzadeh, Ehsan Hajisaeid, Craig Armiento, and Alkim Akyurtlu. "Broadband microwave dielectric characterization method for printable dielectric inks." In 2017 89th ARFTG Microwave Measurement Conference (ARFTG). IEEE, 2017. http://dx.doi.org/10.1109/arftg.2017.8000849.

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Sheen, Jyh. "Microwave Dielectric Properties Measurements Using the Waveguide Reflection Dielectric Resonator." In 2007 IEEE Instrumentation and Measurement Technology Conference. IEEE, 2007. http://dx.doi.org/10.1109/imtc.2007.379350.

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Seyyed-Esfahlan, Mehdi, Mohammad Hossein Nemati, and Ibrahim Tekin. "W-band Silicon dielectric measurement." In 2014 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2014. http://dx.doi.org/10.1109/aps.2014.6904787.

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Huber, E., M. Mirzaee, J. Bjorgaard, M. Hoyack, S. Noghanian, and I. Chang. "Dielectric property measurement of PLA." In 2016 IEEE International Conference on Electro Information Technology (EIT). IEEE, 2016. http://dx.doi.org/10.1109/eit.2016.7535340.

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Glibitskiy, Gennadiy M., E. V. Izhyk, and V. V. Veremey. "Measurement chamber for liquid dielectric." In Millimeter and Submillimeter Waves and Applications: International Conference, edited by Mohammed N. Afsar. SPIE, 1994. http://dx.doi.org/10.1117/12.183057.

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Chukhov, V. V. "Methodic of dielectric permeability measurement." In 2004 14th International Crimean Conference "Microwave and Telecommunication Technology". IEEE, 2004. http://dx.doi.org/10.1109/crmico.2004.183392.

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Torokhtii, Kostiantyn, Nicola Pompeo, and Enrico Silva. "Dielectric-resonator-based measuring devices: Relevance of the dielectric quality." In 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2017. http://dx.doi.org/10.1109/i2mtc.2017.7969900.

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Obrzut, J., and R. Nozaki. "TDR permittivity measurements of dielectric films." In IEEE Instrumentation and Measurement Technology Conference. IEEE, 2006. http://dx.doi.org/10.1109/imtc.2006.328257.

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J. Obrzut. "TDR permittivity measurements of dielectric films." In 2006 IEEE Instrumentation and Measurement Technology. IEEE, 2006. http://dx.doi.org/10.1109/imtc.2006.235522.

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Reports on the topic "Dielectric measurement"

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Patitz, W. E., B. C. Brock, and E. G. Powell. Measurement of dielectric and magnetic properties of soil. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/167219.

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Brisco, B., R. J. Brown, and G. C. Topp. Multi-frequency Portable Dielectric Probes for In-situ Soil Moisture Measurement. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/217759.

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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 fractions of soil constituents, as most mixing models assume, but also to soil attributes and ambient temperature in order to reduce errors in interpreting measured effective permittivities. The major objective of the present research project was to investigate the effects of the soil geometrical attributes and interfacial processes (bound water) on the effective permittivity of the soil, and to develop a theoretical frame for improved, soil-specific effective permittivity- water content calibration curves, which are based on easily attainable soil properties. After initializing the experimental investigation of the effective permittivity - water content relationship, we realized that the first step for water content determination by the Time Domain Reflectometry (TDR) method, namely, the TDR measurement of the soil effective permittivity still requires standardization and improvement, and we also made more efforts than originally planned towards this objective. The findings of the BARD project, related to these two consequential steps involved in TDR measurement of the soil water content, are expected to improve the accuracy of soil water content determination by existing in-situ and remote sensing dielectric methods and to help evaluate new water content sensors based on soil electrical properties. A more precise water content determination is expected to result in reduced irrigation levels, a matter which is beneficial first to American and Israeli farmers, and also to hydrologists and environmentalists dealing with production and assessment of contamination hazards of this progressively more precious natural resource. The improved understanding of the way the soil geometrical attributes affect its effective permittivity is expected to contribute to our understanding and predicting capability of other, related soil transport properties such as electrical and thermal conductivity, and diffusion coefficients of solutes and gas molecules. In addition, to the originally planned research activities we also investigated other related problems and made many contributions of short and longer terms benefits. These efforts include: Developing a method and a special TDR probe for using TDR systems to determine also the soil's matric potential; Developing a methodology for utilizing the thermodielectric effect, namely, the variation of the soil's effective permittivity with temperature, to evaluate its specific surface area; Developing a simple method for characterizing particle shape by measuring the repose angle of a granular material avalanching in water; Measurements and characterization of the pore scale, saturation degree - dependent anisotropy factor for electrical and hydraulic conductivities; Studying the dielectric properties of cereal grains towards improved determination of their water content. A reliable evaluation of the soil textural attributes (e.g. the specific surface area mentioned above) and its water content is essential for intensive irrigation and fertilization processes and within extensive precision agriculture management. The findings of the present research project are expected to improve the determination of cereal grain water content by on-line dielectric methods. A precise evaluation of grain water content is essential for pricing and evaluation of drying-before-storage requirements, issues involving energy savings and commercial aspects of major economic importance to the American agriculture. The results and methodologies developed within the above mentioned side studies are expected to be beneficial to also other industrial and environmental practices requiring the water content determination and characterization of granular materials.
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Mopsik, Frederick I., and Brian Dickens. The measurement of the dielectric constant of polymeric films at high fields. Gaithersburg, MD: National Institute of Standards and Technology, 1992. http://dx.doi.org/10.6028/nist.ir.4910.

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He, Rui, Na (Luna) Lu, and Jan Olek. Development of In-Situ Sensing Method for the Monitoring of Water-Cement (w/c) Values and the Effectiveness of Curing Concrete. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317377.

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As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with liquid membrane-forming compounds. For laboratory study, concrete samples are usually cured in saturated lime water or a curing room with a relative humidity (RH) value higher than 95%. Thus, the effectiveness of curing compounds for field concrete needs to be studied. In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for w/c determination of plastic concrete and curing effectiveness evaluation method for hardened concrete.
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Shimabukuko, F. I., and C. Yeh. Attenuation Measurement of Very Low-Loss Dielectric Waveguides by the Cavity Resonator Method in the Millimeter/Submillimeter Wavelength Range. Fort Belvoir, VA: Defense Technical Information Center, March 1989. http://dx.doi.org/10.21236/ada206458.

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Riddle, Bill, and James Baker-Jarvis. Dielectric measurements using a reentrant cavity :. Gaithersburg, MD: National Bureau of Standards, 1996. http://dx.doi.org/10.6028/nist.tn.1384.

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Brisco, B., T. J. Pultz, R. J. Brown, G. C. Topp, and W D Zebchuk. Dielectric Constant Measurements of Soil With Portable Dielectric Probes and TDR Techniques. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/218269.

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Nahman, N. S. Dielectric constant measurements on n-heptane and 2-heptanone. Office of Scientific and Technical Information (OSTI), January 1994. http://dx.doi.org/10.2172/527432.

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Camp, Paul R., and David R. LaBrecque. Determination of the Water Content of Snow by Dielectric Measurements. Fort Belvoir, VA: Defense Technical Information Center, July 1992. http://dx.doi.org/10.21236/ada256299.

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