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Dissertations / Theses on the topic 'Impedance characteristic'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Hickerson, Anna Iwaniec Burdick Joel Wakeman. "An experimental analysis of the characteristic behaviors of an impedance pump /." Diss., Pasadena, Calif. : California Institute of Technology, 2005. http://resolver.caltech.edu/CaltechETD:etd-05232005-141405.

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2

Forsberg, Alexander. "Utvärdering av HyperLynx Signal Integrity genom jämförelse av simulerade och uppmätta signaler." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Data- och elektroteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-21206.

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Simulering är en viktig del av utvecklingsarbetet för nya datorkort hos Centre of Excellence - Computers på Saab AB i Jönköping. Ju tidigare i utvecklingsarbetet som defekter och svagheter hos designen hittas desto enklare och mindre kostsamma blir ändringarna att införa. På CoE används simulerings och analysverktyget HyperLynx från Mentor Graphics för att simulera alla kritiska nät. På så sätt kan svagheter hos en design hittas redan innan prototypstadiet. För att simulatorn ska vara användbar krävs dock en kunskap om hur dess resultat korrelerar med verkligheten. Det leder till den övergripa

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3

Puváková, Alžbeta. "Příprava a optimalizace perovskitových solárních článků." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433525.

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Perovskite solar cells are part of third generation of solar cells and thanks to their atractive properties they are potencional candidates for replacement of silicon solar cells. Inverted planar structure of perovskite solar cells is possible to prepare by low temperature methods and by solution processing techniques. Main aim of this thesis was to prepare and characterize inverted planar perovskite solr cells with a different modification of structure. Perovskite solar cells was prepared with following structures: reference perovskite solar cells, perovskite solar cells with only a perovskit

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Holínský, Jan. "Měření pasivních kmitočtových výhybek pro reproduktorové soustavy." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442518.

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The content of the master´s thesis is to approach the issue of measuring the characteristics of passive frequency crossover. The work describes individual types of measured characteristics and their possibility of measurement. Then the work describes design of modules for measurement characteristics of passive frequency crossover (shunt, resistive load and amplifier). These modules were made and tested for its functions. For the amplifier is then made a second design for fulfilment requirements. The second version isn’t made in this work. At the end of the work was prepared the theoretical par

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Kermani, Behnoud. "Application of P-wave Reflection Imaging to Unknown Bridge Foundations and Comparison with Other Non-Destructive Test Methods." Master's thesis, Temple University Libraries, 2013. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/234113.

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Civil Engineering<br>M.S.C.E.<br>Proper design of bridge structures requires an appreciation for the possible failure mechanisms that can develop over the lifetime of the bridge, many of which are related to natural hazards. For example, scour is one of the most common causes of bridge failures. Scour occurs due to the erosion of soil and sediment within a channel with flowing water. During a flood event, the extent of scour can be so great that it can destabilize an existing bridge structure. In order to evaluate the scour potential of a bridge, it is necessary to have information regarding t

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Guzej, Michal. "Rotující odtržení v prostoru odstředivého kompresoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230025.

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This thesis deals with a procedure for determining the complete processing of aerodynamic flow instabilities (rotating stall and surge) in a centrifugal compressor. At small flows the performance of a compressor system is limited by the surge line, which is caused by flow instabilities. Numerical solution is obtained using the method of transfer matrix. This system is simulated through several models with local resistances that represent the dissipation of pressure energy. Pulses are excitated in these models by the pressure jump placed before the centrifugal compressor. From the frequency-amp

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7

Rezaei, Niya Seyed Mohammad. "Process modeling of impedance characteristics of proton exchange membrane fuel cells." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/53653.

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The impedance characteristics of proton exchange membrane (PEM) fuel cells are studied and analyzed in this thesis. The modeling approaches presented in literature are thoroughly reviewed and categorized as the measurement-modeling and process-modeling approaches. In the former category, a hypothetical equivalent circuit which has the impedance characteristics similar to measured impedances is presented. Since the equivalent circuit is not directly resulted from the physical and chemical properties of the PEM fuel cells, the majority of the measurement-modeling approaches lead to dubious concl

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8

Villamil, Susan Simmons. "Impedance characteristics and grain boundary effects in titanate-based multilayer ceramic capacitors." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/94507.

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The major goal of this study was to gain a better understanding of the effects that grain boundaries have on conduction in multilayer ceramic (MLC) capacitors. Electrical measurements were made so that current-voltage curves and impedance plots could be constructed. It was found that the current-voltage curves of new COG and X7R multilayer ceramic capacitors are both ohmic at low voltages and super-ohmic at intermediate voltages. Ohmic behavior prevails at high voltages for both types. Such behavior can be attributed to grain boundaries. Grain boundary resistance was clearly exhibited by X

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9

Habtemariam, Filmon A. "HIGH-FREQUENCY IMPEDANCE CHARACTERISTICS AND HEALTH CONDITION MONITORING OF OVERHEAD POWER LINES." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1472735633.

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10

Lee, Iljae. "Acoustic characteristics of perforated dissipative and hybrid silencers." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1117631229.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xvi, 195 p.; also includes graphics. Includes bibliographical references (p. 183-195). Available online via OhioLINK's ETD Center

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11

Fitzgerald, Anthony. "Extraction of tissue electrical characteristics from pixels of MFEIT images." Thesis, Queensland University of Technology, 1997.

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12

Hänninen, Seppo. "Single phase earth faults in high impedance grounded networks : characteristics, indication and location /." Espoo [Finland] : Technical Research Centre of Finland, 2001. http://www.vtt.fi/inf/pdf/publications/2001/P453.pdf.

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13

Okazaki, Tomohisa. "Characteristics of Electrical Anisotropy in Magnetotelluric Responses." Kyoto University, 2018. http://hdl.handle.net/2433/232256.

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Maxted, Katsuo J. "Experimental Investigation on Acoustic Characteristics of Convergent Orifices in Bias Flow." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439304400.

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15

Çelebi, Hasan Basri. "Noise and Multipath Characteristics of Power Line Communication Channels." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1594.

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With the recent developments in technology, information and communication technologies (ICTs) are becoming more widespread and one of the basic building blocks of every humans life. The increasing demand in broadband communication calls for new technologies. Power line communication (PLC) is one of the potential candidates for next generation ICTs. Although communication through power lines has been investigated for a long time, PLC systems were never taken into account seriously because of its harsh communication medium. However, with the development of more robust data transmission schemes,

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Kraśniewski, Jarosław. "Measurements of transient thermal characteristics of microwave transistors : PhD thesis summary." Rozprawa doktorska, [s.n.], 2009. http://dlibra.tu.koszalin.pl/Content/1196.

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Steininger, Gavin Arthur Mervyn Wyverstone. "Determination of the acoustical diffusion and impedance characteristics of surfaces by Bayesian inversion of a modified Helmholtz equation." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/11995.

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A surface diffusion coefficient is used in architectural-acoustics to evaluate the effectiveness of diffusing surfaces. The inclusion of the diffusion characteristics is also important for the accuracy of room prediction models. Another important parameter is the absorption or impedance of a surface. In settings with significant low-frequency noise, phase effects are important; consequently impedance values of surfaces are necessary for accurate modeling. A review of existing models for specular and diffuse reflection is made. A new diffusion coefficient is defined and included in three new fo

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18

Zhang, Yitian. "STUDIES TO IMPROVE EXHAUST SYSTEM ACOUSTIC PERFORMANCE BY DETERMINATION AND ASSESSMENT OF THE SOURCE CHARACTERISTICS AND IMPEDANCE OPTIMIZATION." UKnowledge, 2016. http://uknowledge.uky.edu/me_etds/77.

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It is shown that the relationship between an impedance change and the dynamic response of a linear system is in the form of the Moebius transformation. The Moebius transformation is a conformal complex transformation that maps straight lines and circles in one complex plane into straight lines and circles in another complex plane. The center and radius of the mapped circle can be predicted provided that all the complex coefficients are known. This feature enables rapid determination of the optimal impedance change to achieve desired performance. This dissertation is primarily focused on the ap

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19

Conrad, Joël. "Modélisation d'un transformateur de courant à charge variable." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0171.

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Les transformateurs de courant débitent généralement dans une charge de faible impédance. Si cette condition n'est pas remplie, l'induction dans le tore et le courant magnétisant ne sont plus négligeables. Ce mémoire traite ce cas de figure avec en plus des courants éventuellement non sinusordaux et avec une composante contin!le. Un modèle analytique s'étoffe au fur et à mesure afin de tenir compte de ces spécificités. - D'abord nous analysons le comportement de la chaîne de mesure avec des courants sinusoidaux, nous développons un modèle analytique non linéaire de l'impédance magnétisante et

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20

Tamilselvan, Karthi. "The Impacts of Ultra High Voltage AC line characteristics on line distance protection." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194315.

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With the growing load demand, Ultra high Voltage (UHV) transmission lines are utilized in many countries around the world for bulk power transmission from remote locations over long distance. UHV transmission lines have typical features and it poses a challenge to the power system design with respect to protection, insulation and reactive power compensation, etc. Protection is a key issue in UHV transmission since a relay failure can interrupt and damage the power system. There are distance and differential protection schemes in the transmission line which account for security of the power sys

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Shen, Boyang. "Study of second generation high temperature superconductors : electromagnetic characteristics and AC loss analysis." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/276688.

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This thesis presents a novel study on Second Generation High Temperature Superconductors, which covers their electromagnetic characteristics and AC loss analysis. Lorentz Force Electrical Impedance Tomography (LFEIT) is one of the most promising hybrid diagnostic scanners with burgeoning potential for biological imaging, particularly in the detection of cancer and internal haemorrhages. The author tried a novel combination of superconducting magnets together with the LFEIT system. The reason is that superconducting magnets can generate a magnetic field with high intensity and homogeneity, whic

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22

Marek, Pavel. "Měření přenosových a imitančních charakteristik aktivních obvodových prvků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218000.

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This diploma work deals with active circuit elements and proposals of methods for measuring of some parameters of these elements. In the opening part the work deals with general classification of elements used in electronic circuits, ideal and real current sources and power supplies. Further there are stated basic parameters and characteristics presented by producers in a catalogue sheet for active elements MAX435, OPA660, AD844 and MAA741 element which already belongs to the history of IC. Main attention is paid to active circuit elements with current sources driven by CCCS (Current Controlle

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Mlčkovová, Hana. "Studium dielektrických vlastností krystalů perovskitů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-445134.

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The presented diploma thesis deals with the preparation of perovskite single crystals by inverse thermal crystallization and subsequent study of the basic properties of these hybrid organic-inorganic materials that can be used in various optoelectronic (photodetectors, transistors, lasers, LEDs) or photovoltaic applications. Their behavior in the electric field was studied by impedance spectroscopy. Impedance and capacitance-voltage (C-V) characteristics (frequency dependences) were measured in the dark and in the light. From the impedance dependences for measurements at 0 V voltage in the dar

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Mancl, Vlastimil. "Systém Hefaistos." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400640.

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This master's thesis describes functionality and principle of the Hefaistos measurement system, which is fully automated and modular. Its purpose is to measure frequency responses of materials and its temperature dependence. The thesis describes all the necessary parts of the modular measurement system. Main part of this system is the control application programmed in LabVIEW software environment. Another necessary parts are impedance analyzers for acquiring frequency dependencies and heating chambers for heating measured materials. The control application ensures hardware synchronization betw

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Maráčková, Lucie. "Studium elektrických a dielektrických vlastností plynových senzorů na bázi iontových kapalin." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316154.

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This diploma´s thesis is focused on a study of electrical and dielectric properties of gas sensors based on ionic liquids. Measurements were done on two different types of OECT substrates (0099 and 0160). Three ionic liquids and physiological solution PBS were chosen as electrolytes. Direct current current-voltage characteristic was measured. Switching rations of transistors with this electrolyte were determined by current-voltage characteristic. Alternating resistivity dependence on frequency were measured as well. Better properties showed OECT 0099 substrates.

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Al, Mahmud Shamsul Arefeen. "Wireless Power Transfer : Machine Learning Assisted Characteristics Prediction for Effective Wireless Power Transfer Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286673.

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One of the main challenges in wireless power transfer (WPT) devices is performance degradation when the receiver’s position and characteristics vary. The variations in the system parameters such as load impedance and coupling strength in WPT devices affect performance characteristics such as output voltage and power. When the system parameters are different from the optimal operating conditions, the performances are degraded. Therefore, the load impedance and coupling strength must be monitored to do the necessary optimization and control. However, such control approaches require additional se

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Pospíšil, Jan. "Studium dielektrických vlastností struktur tenkých vrstev organických materiálů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-261290.

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The dissertation is focused on the study of electric and especially dielectric properties of thin film organic materials with their huge potential for optoelectronics and other industrial sectors. The theoretical part deals with the use of organic materials in organic photovoltaic cells, the methods of deposition techniques and characterization. The theoretical knowledge of the dielectric spectroscopy, including methods for determining the physical properties and evaluation of experimental data are also described. The experimental part is devoted to the study of small molecule organic solar ce

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Mitáčková, Martina. "Studium vlastností tranzistorů s iontovými kapalinami." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449404.

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This diploma thesis is focused on the study of electric and dielectric properties of transistors based on ionic liquids. The measurements were performed on organic electrochemical transistors with a semiconducting channel made of PEDOT:PSS, which were firstly prepared on ITO substrates, later they were printed using 3D print. Ionic liquid NO4 (1-butyl-3-methylimidazolium hydrogensulfate) was used for measuring of the properties. Electrical properties were determined by measuring volt-ampere characteristics, dielectric properties were measured by impedance spectroscopy.

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Dirbák, Štefan. "Návrh a realizace plošného měření rezistivity půdy." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413053.

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This diploma thesis deals with research and study of soil impedance measurement and soil resistivity. Currently, the issue of measuring and determining soil resistance is ensured through the gradual measurement of certain soil parameters at individual points of the surface (or depth of the ground). This thesis focuses on the idea of measuring soil resistance on a certain area using a network of electrodes through a suitably designed test, measurement and evaluation system. Such an approach may find application in the need to determine soil parameters (such as resistivity) on a specific demarca

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Ravel, Guillaume. "Conception et caractérisation d'une décharge capacitive à 13,56 MHz utilisant une cathode à champ magnétique dynamique intégré pour la gravure sèche des microcircuits." Grenoble 1, 1987. http://www.theses.fr/1987GRE10135.

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Ce memoire decrit la mise en oeuvre, l'etude et la caracterisation d'un reacteur de gravure seche pour le traitement de substrats en microelectronique. Apres une analyse tres schematique des parametres d'une action de gravure et des influences respectives sur ces parametres de diverses structures de decharge, nous avons developpe un dispositif experimental utilisant deux electrodes excitees en radiofrequence et un champ magnetique externe. Une phase d'evaluation sur des gravures de silicium polycristallin en plasma de sf::(6) nous a conduit a un reacteur prototype dote d'une cathode originale

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Florián, Pavel. "Studium elektrických a dielektrických vlastností alkalicky aktivovaných aluminosilikátů se zvýšenou elektrickou vodivostí." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-393991.

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This dissertation deals with the study of electric and dielectric properties of composite structures on the base of alkali-activated aluminosilicates with admixtures of various carbon particles. These materials fabricated from alkali-activated blast furnace slag, quarz sand, natrium water glass as alkali activator, water, dispersant and small amount of carbon admixture (carbon black, graphite powder, carbon fibers or carbon nanotubes) to increase electric conductivity may be used for example to construction of snow-melting, deicing and self-monitoring systems. Their current-voltage characteris

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Pospíšil, Jan. "Studium optoelektrických vlastností tenkých vrstev organických polovodičů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216901.

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The thesis is focused on the study of electric and dielectric properties of thin film organic materials that can be used as an active layer of photovoltaic cells. Primarily were studied the properties of the layers on the glass substrates, which consist of a thin active layer of phthalocyanines. On the samples were first measured current-voltage characteristics (in the dark and during the exposure) and the basic parameters of the photovoltaic conversion were determined. Finally were measured frequency dependencies (impedance spectra, in the dark and during the exposure) and the parameters of a

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Miklíková, Zdeňka. "Studium optoelektrických vlastností tenkých vrstev organických polovodičů na bázi ftalocyaninů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-217103.

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Diploma thesis is focused on the study of optoelectric properties of thin layers of organic materials based on phthalocyanines, which can be used as an active layer of photovoltaic cells. Especially are studied the properties of the thin active layers of PdPc and PdPc + IL on the glass or ceramic substrates with aluminium contact, which are prepared by material printing here. On the prepared samples were first measured current-voltage characteristics in the dark and in the light and then were measured impedance spectrums in the dark. The received results will be used to improve the properties

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Ghasemi, Negareh. "Improving ultrasound excitation systems using a flexible power supply with adjustable voltage and frequency to drive piezoelectric transducers." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/61091/1/Negareh_Ghasemi_Thesis.pdf.

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The ability of a piezoelectric transducer in energy conversion is rapidly expanding in several applications. Some of the industrial applications for which a high power ultrasound transducer can be used are surface cleaning, water treatment, plastic welding and food sterilization. Also, a high power ultrasound transducer plays a great role in biomedical applications such as diagnostic and therapeutic applications. An ultrasound transducer is usually applied to convert electrical energy to mechanical energy and vice versa. In some high power ultrasound system, ultrasound transducers are applied

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Wang, Wen-Ping, and 王文萍. "Coupled-Line Coupler with Impedance Transforming Characteristic." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/33k6zw.

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碩士<br>國立交通大學<br>電信工程研究所<br>106<br>In this thesis, coupled-line coupler with impedance transforming characteristics is proposed using quarter-wavelength transformer and coupled-line coupler. It is a planar circuit consisted of microstrip lines and coupled line with enhanced coupling structures, which makes it simple to manufacture and reliable. In order to generalize the concept with broadband impedance transforming characteristics, two coupled-line couplers with different constructure are designed and measured. The proposed coupled-line couplers, with center frequency 1.5GHz,input impedance 50

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Chen, Ying-Yu, and 陳瀅羽. "A Study of Characteristic Impedance Analysis of Substrate." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/95738655369772320352.

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碩士<br>國立高雄第一科技大學<br>電腦與通訊工程研究所<br>100<br>Impedance matching would impact the quality of the signal transfer in the substrate design with high-speed signal transmission. Good impedance matching can design high-frequency signal transfer completely to the load point. Not reflect the signal back to the point of origin and cause noise, and thus enhance energy efficiency. Design a transmission line structure, In addition to understanding all of the elements(Line width / Path...etc), we also have to understand the suppliers’ capabilities of substrate process. Differential signaling to suppress co

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Hickerson, Anna Iwaniec. "An Experimental Analysis of the Characteristic Behaviors of an Impedance Pump." Thesis, 2005. https://thesis.library.caltech.edu/1969/9/All.pdf.

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<p>When a fluid-filled pliant tube is connected to tubing of a different impedance, a net flow in either direction can be induced by periodically compressing the pliant section asymmetrically from the ends. An experimental analysis of the characteristic behaviors of such a pump has been done demonstrating interesting results not predicted by prior analytical and computational results. Measurements show a complex non-linear behavior in response to the compression frequency, including distinct resonance peaks and reversals in flow direction. Ultrasound imaging provided a unique view of the tu

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Lai, Min-Feng, and 賴民峰. "Characteristic Evaluation and Biodetecting Application of Self-Assembled Monolayer by Electrochemical Impedance Spectroscopy." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/86752298780937809690.

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碩士<br>國立成功大學<br>醫學工程研究所碩博士班<br>92<br>By using self assembled monolayer (SAM) with different functional groups to modify a substrate, the surface of the substrate was suitable for specific bio-detection. The aim of this study were two, one was to characterize the physical properties of substrate with SAM modification, the other was that applied a layer of SAM coated with avidin protein on sensing electrode as a bio-probe to quantify the formation of avidin-biotin complex by impedance response in electrical impedance analysis. 　　　　There were three types of SAM with carboxyl group to be coated o

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Lin, Chia-Ching, and 林佳慶. "Electrical Characteristic Measurements and Discrimination of Bioparticles by Electrorotation and Impedance Measurement Method." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/13387944642998766509.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>92<br>In this thesis, a novel microelectrode chip for Bio-particle’s permittivity and conductivity measurement is manufactured by MEMS technique. Using this chip, we can measure the electrical characteristic of cells and bacteria through employing DEP effect with un-contact method. Experiments are implemented by using ROT method to measure permittivity and conductivity of a series of cells and bacteria progressively. In the beginning, it is to realize the principle of EP and DEP, design the shape of electrode and simulate the electric field distribut

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LI, YI, and 李奕. "Contactless Sensing Levels of Tilt Liquid with the Impedance Characteristic of Interdigital Vertical Electrodes." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qezsa6.

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碩士<br>聖約翰科技大學<br>電機工程系碩士班<br>107<br>At present, most of liquid level measurements usually adopt the way in which the sensing electrode directly invades the liquid. It will cause corrosion, dissolved pollution and chemical reaction to affect the exact value. This is not suitable for medical, chemical liquids and foods, and there is no guarantee of pollution-free sensing. Therefore, this paper proposes the use of equivalent capacitance impedance characteristic to implement the liquid level measurement by the outside of the container. The design methods including: 1). using a pulse wave signal t

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Jhih-LinHong and 洪誌臨. "Electrical Characteristic Analysis of Various Cancer cells Using Microfluidic Device Based on Single-cell Impedance Measurement." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/13971992343465213263.

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碩士<br>國立成功大學<br>奈米科技暨微系統工程研究所<br>98<br>Electrical impedance spectroscopy (EIS) technique is used to analyze the character of electrochemical material for biomedical application. This paper presents a fast and low-cost manner to differentiate the four kinds of cells using impedance measurement in different voltage and frequency. Four kinds of cells (HeLa, MDA-MB-231, A549 and MCF-7) are analyzed and characterized on impedance by a trap-and-measure device. The impedance spectrums are obtained by the impedance analyzer at operating voltage of 0.2-1V and frequency from 20 to 101 kHz. According to

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Akrou, Lamyae. "Numerical aspects of the characteristic modes theory." Doctoral thesis, 2020. http://hdl.handle.net/10316/96359.

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Tese no âmbito do doutoramento em Engenharia Electrotécnica e de Computadores, Ramo de Especialização em Telecomunicações orientada pelo Professor Doutor Henrique J. A. da Silva e apresentada ao Departamento de Engenharia Electrotécnica e de Computadores da Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>Nowadays, the characteristic modes theory becomes more and more popular in the electromagnetic ﬁeld as a very eﬃcient tool for analysing and solving scattering and radiation problems. Unlike the existing analysis tools, the characteristic modes analysis is based on the

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Schulz, Frederick Fay. "Development of a new method of measuring the characteristic impedance and complex wave number of a porous acoustic material." Thesis, 1987. http://hdl.handle.net/10945/22241.

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Yu, Ming-Yuan, and 游茗元. "Prediction of the Characteristic Impedance for Flexible Printed Circuit Using Hybrid Approaches:A Case Study on X Company in Taiwan." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/szqp77.

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碩士<br>輔仁大學<br>統計資訊學系應用統計碩士在職專班<br>103<br>High frequency is the trend for electrical products. The appropriate control of characteristic impedance is the key step to the success of FPC process.The issue of shorten the lead time for setting characteristic impedance and speed up producing time are extremely important for FPC process. Typically,FPC companies face many difficulties when performing simulations of controlling characteristic impedance, because it is not suitable for the higher price or professional electrical program needed. How to efficiently predict and accurately evaluate the chara

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Chen, Shyue-Dar, and 陳學達. "Characteristic Impedance and Propagation of the First Higher-Order Microstrip Mode in Frequency and Time Domain/ Design a Series-fed, Proximity Coupling, Leaky-mode Antenna Array." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/42500119822665443572.

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博士<br>國立交通大學<br>電信工程系<br>89<br>This thesis consists of two parts, including 1) experimentally and theoretically confirms the validity of the definition proposed by N. K. Das [4] for computing the complex characteristic impedance of the first higher-order (EH1) microstrip mode. 2) theoretically and experimentally demonstrates to design a millimeter wave leaky-mode antenna array based on the first higher-order mode on the printed microstrip line. In the first part of the thesis, the normalized complex propagation constant and complex characteristic impedance of the microstr

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Kaur, Sukhdeep. "An empirical study of SD signal delay versus temperature in a plenum grade coaxial cable." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2534.

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A high resolution speedy delivery time domain reflectometer (SD/TDR) has been developed in the Electrical Engineering department at The University of Texas at Austin. The SD/TDR uses a novel non-sinusoidal signal that does not undergo dispersion during transmission in a lossy media. SD/TDR is used to estimate the length and detect the location of faults in the transmission lines. Time of flight (TOF) is one of the critical parameters of SD/TDR and a function of several temperature dependent factors. Given the TOF and length of a transmission line, signal delay can be computed. This research pr

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WANG, JYUN-JIE, and 王俊傑. "Preparation conductive composites and impedance characteristics." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/52223991326489474626.

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碩士<br>東海大學<br>化學工程與材料工程學系<br>103<br>The purpose of this study is to develop a uniform conducting composite coating through electro-polymerization for corrosion prevention. The composite system consists of polythiophene embedded in epoxy matrix.The electro-polymerization systems contained monomer with acetonitrile was used as the solvent, and tetrabutylammonium tetrafluoroborate (TBATFB) was the electrolyte that catalyzed the reaction of epoxy. Effects of the reactant concentrations, electrolyte concentration, and polymerizing potential were investigated. Our results showed that comparing with

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Tuan, Nguyen Anh, and 阮英俊. "Study on Characteristics of a Valveless Impedance Pump." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/57000127976615229284.

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碩士<br>大葉大學<br>車輛工程學系碩士班<br>94<br>In this work, we have conducted the experimental and theoretical investigations of characteristics of a valveless impedance pump. The valveless impedance pump was constructed of an electric-mechanical compression mechanism, an elastic tube, a rigid tube and two reservoirs. The elastic tube of latex rubber was connected to the rigid plastic tube and formed asymmetry impedance. The two tubes were glued to two acrylic reservoirs, respectively. Through cumulative effects of wave propagation and reflection originating from a compression electric-mechanical mechanism

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Chen, John, and 陳正中. "Guidance Characteristics of Two-Dimensionally Periodic Impedance Surface." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/35809117587181890962.

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碩士<br>國立交通大學<br>電信工程系<br>87<br>We present here an exact formulation for the three-dimensional boundary-value problem of wave guiding by a two-dimensionally periodic impedance surface in a uniform medium. The dispersion characteristics of such a structure are rigorously analyzed in terms of the complete set of both TE- and TM-polarized plane waves in the uniform medium. The results are systematically expressed in the form of the Brillouin diagram; thereby, in comparison to the one-dimensional case, a host of new and interesting phenomena are identified and physically explained.

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Li, Charles, and 李悌暘. "Scattering and Guiding Characteristics of Doubly Periodic Impedance Surface." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/72314336628344558238.

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碩士<br>國立交通大學<br>電信工程系<br>88<br>We present here a study of wave phenomena associated with a doubly periodic impedance surface, e.g., an impedance surface that is modulated by two periodic functions of different periods in the same direction. Our main interest is in the interaction between the two different periods to explore new physical phenomena that cannot be taken place in the singly periodic case. Such a structure permits a rigorous formulation as a three-dimensional boundary value problem, so that any new physical phenomenon can be identified with confidence. Here, the period

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