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Dissertations / Theses on the topic 'Interdigital electrode'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Brosel, Oliu Sergi. "Interdigitated electrode arrays (idea) impedimetric transducers for bacterial biosensing applications." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/666603.

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La tecnologia dels biosensors, basada en dispositius analítics que combinen un bioreceptor amb una unitat de transducció, s’ha aplicat en nombroses àrees de recerca per a la detecció de diferents analits d’interès. Els bacteris, especialment els bacteris patògens, són agents biològics importants per ser detectats en diversos camps com el diagnòstic clínic, la indústria alimentària o la qualitat de l’aigua per prevenir malalties en els éssers humans. No obstant això, els bacteris també es poden utilitzar en un ampli ventall d’aplicacions; per exemple, com a indicadors biològics per determinar

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Mallén, Alberdi Maria. "Dispositius impedimètrics per a la detecció directa de microorganismes." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/392710.

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La detecció de bacteris patògens en medis aquosos és d’alta importància en diversos camps. Un diagnòstic ràpid de la qualitat de les aigües és fonamental per evitar exposar la població a patògens. Els mètodes de detecció tradicionals requereixen períodes d’incubació d’entre 18 a 96 hores i, per tant, fins que no se sàpiguen els resultats hi ha risc d’infecció. Els biosensors es caracteritzen per ser senzills d’utilitzar i per no requerir grans equips per realitzar-ne les mesures. A més, són fàcils d’integrar a sistemes de flux i els resultats es poden obtenir de manera instantània i serien ido

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3

Whited, Allison Mae. "Investigation of Impedance Spectroscopy for Detection of Ovarian Cancer." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/68.

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Electronic biosensors utilizing micron-scale interdigitate electrodes (IDEs) in an SD card format have been developed with the objective of fast, sensitive detection of ovarian cancer biomarkers CA-125, CEA, and He4. The signal generated by the biosensors is a result of electrochemical impedance spectroscopy (EIS), a technique which probes changes that occur in the biosensor's electrical properties when the biosensor has detected one of the target biomarkers. A label-free biosensor has been developed to detect CA-125 in spiked buffer at concentrations between 10 and 80units/mL. A similar label

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4

Ngo, Thanh Tuan. "Contribution à la mesure de bioimpédance électrique de cellules biologiques par micro-capteurs interdigités : optimisation, conception et validation de capteurs." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0077/document.

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Cette thèse porte sur la conception et la réalisation de micros capteurs à électrodes interdigitées pour la caractérisation des milieux biologiques dans la gamme de fréquences : 100 kHz - 10 MHz. L'objectif principal de ce travail est l’optimisation géométrique de la structure d’un capteur à électrodes interdigitées afin d’élargir la plage fréquentielle de mesure en réduisant les effets de polarisation. Le premier chapitre synthétise les données fondamentales relatives au comportement électrique des tissus biologiques ainsi que leurs propriétés électriques notamment en basses fréquences. Le de

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El, Romh Mohamad Ali. "Oxydes sans plomb pour la détection de gaz : OSPÉGAZ." Thesis, Littoral, 2016. http://www.theses.fr/2016DUNK0448/document.

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La détection de gaz, qui utilise aujourd'hui principalement des capteurs optiques, des capteurs électrochimiques à base de plomb et des capteurs catalytiques est un marché très porteur (estimé à 3 milliards d'euros) et doté d'une forte croissance (10% par an). La nécessité de développer de nouveaux systèmes d'instrumentation dédiés à la surveillance de la qualité de l'air intérieur et à la détection de substances dangereuses implique l'étude et le développement de nouveaux capteurs élaborés à partir de produits compatibles avec les enjeux environnementaux (RoHs, REACH), et économiques (matéria

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6

Ngo, Thanh Tuan. "Contribution à la mesure de bioimpédance électrique de cellules biologiques par micro-capteurs interdigités : optimisation, conception et validation de capteurs." Electronic Thesis or Diss., Université de Lorraine, 2015. http://www.theses.fr/2015LORR0077.

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Cette thèse porte sur la conception et la réalisation de micros capteurs à électrodes interdigitées pour la caractérisation des milieux biologiques dans la gamme de fréquences : 100 kHz - 10 MHz. L'objectif principal de ce travail est l’optimisation géométrique de la structure d’un capteur à électrodes interdigitées afin d’élargir la plage fréquentielle de mesure en réduisant les effets de polarisation. Le premier chapitre synthétise les données fondamentales relatives au comportement électrique des tissus biologiques ainsi que leurs propriétés électriques notamment en basses fréquences. Le de

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7

Arapan, Lilia. "Thin Film Plate Acoustic Resonators for Frequency Control and Sensing Applications." Doctoral thesis, Uppsala universitet, Fasta tillståndets elektronik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-178592.

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The recent development of the commercially viable thin film electro-acoustic technology has triggered a growing interest in the research of plate guided wave or Lamb wave components owing to their unique characteristics. In the present thesis i) an experimental study of the thin film plate resonators (FPAR) performance operating on the lowest symmetrical Lamb wave (S0) propagating in highly textured AlN membranes versus a variety of design parameters has been performed. The S0 mode is excited through an Interdigital Transducer and confined within the structure by means of reflection from metal

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8

Fendri, Ahmed. "Impedimetric Sensor System for Edible Oil Quality Assessment." Universitätsverlag Chemnitz, 2019. https://monarch.qucosa.de/id/qucosa%3A37173.

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The repeated usage of frying oil is hazardous due to the degradation caused by chemical reactions, which happen while heating. The total polar compounds and the free fatty acids are the main two chemical parameters affected by frying. These parameters increase significantly with the use of oil for frying and are reported as reasons for causing serious illnesses like heart diseases. For this purpose, sensor systems for oil quality assessment are necessary. In fact, changes of the composition due to frying leads to variation of its dielectric parameters. This can be measured using a capacit

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9

DEWI, NURMALASARI NI PUTU, and 黛薇. "Electrochemical Single-Chip Capacitor Using Interdigital Finger Electrode with Hydrous RuO2." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/h9yg68.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>95<br>Electrochemical capacitors (EC) are becoming attractive energy storage devices and fill the gap between batteries and conventional capacitors, since EC possess a higher energy density than that of the conventional dielectric capacitor and have a higher power density and a longer cycling life than the battery. In this thesis, we prepare a single chip EC using the standard techniques, that is, lithography and reactive sputtering. We have coated RuO2•0.46H2O by electrodeposition on top of the TiO2/Ti/Au/SiO2/Si and RuO2NR/TiO2/Ti/Au/SiO2/Si. The material of each l

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10

Tsai, Cheng-Hsien, and 蔡政憲. "Design and fabrication of PVDF electrospun piezo- energy harvester with interdigital electrode." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/49953168595447140901.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>99<br>This study used electrospinning to fabricate a polyvinylidene fluoride (PVDF) piezoelectric nanofiber harvesting device with interdigitated electrode to capture ambient energy. According to d33 mechanical-electric energy conversion mode, the energy harvesting device can be applied on the low frequency ambient vibration and impact abilities for the transformation mechanical energy into electrical energy effectively. First, the PVDF powder was mixed in acetone solution uniformly and the dimethyl sulfoxide (DMSO) was mixed with multi-walled carbon nanotube (M

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11

Wei-LiHu and 胡維禮. "Ratio of Hba1c to Hemoglobin on Ring-shaped Interdigital Electrode Arrays Based on Impedance Measurement." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/57154106884423943454.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>101<br>It’s essential to monitor the long-term glucose concentration in the blood of the diabetic patients, and glycated hemoglobin (HbA1c) has became one of the most important mark to diagnose. This study presents an on-chip biosensor for detecting the glycated hemoglobin as a ratio to total hemoglobin (Hb) based on impedance measurement. In the measurement process, no any other reagent is required. It’s label-free, and low sample volume needed. The ring-shaped interdigital electrodes were coated with the self-assembled monolayer (SAM) to immobilize the proteins

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12

Kim, Jun Wan. "Development of interdigitated capacitor sensors for direct and wireless measurements of the dielectric properties of liquids." 2008. http://hdl.handle.net/2152/10565.

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The miniaturization of chemical and biological sensors has received considerable attention in recent years for medical diagnostics, environmental monitoring, pharmaceutical screening, military applications, etc. One interesting area of development in microfluidic system is detecting dielectric properties of MUT (Material Under Test) using IDC (Interdigital Capacitor) electrodes. The IDC chemical sensor has been investigated by many researchers because they are cheap to manufacture and can be easily integrated with other sensing components and signal processing electronics. This dissertation p

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13

Chen, Jing-Si, and 陳勁希. "Guided Wave Transducers Using Piezoelectric Fiber Composites with Interdigital Electrodes." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/90858050163180433780.

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碩士<br>國立交通大學<br>機械工程系所<br>102<br>Piezoelectric fiber composite (PFC) is made of unidirectional piezoelectric ceramic fibers embedded in epoxy resin and sandwiched between two flexible printed circuit films with interdigital electrodes. It has comparative advantages of light-weight, flexibility, conformability to curved structures, etc. The conventional PFC featuring symmetrically aligned interdigital electrodes have been used for low frequency vibration suppression and energy harvesting. This study explores sensing and actuating abilities of the piezoelectric fiber composites with antisymmetri

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Li, Yi-Chin, and 李怡親. "Planar ultracapacitor of interdigital electrodes loaded with (CoNi)Ox and carbon nanotubes." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/65788953688004034846.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>98<br>ABSTRACT In the present study, we develop the ultracapacitor cells of miniature size, which are prepared with photolithography, chemical vapor deposition of carbon nanotubes (CNT), and electrochemical deposition of pseudocapacitive NiCo2O4. The performance of the ultracapacitors is analyzed by cyclic voltammetry (CV), impedance, and charge-discharge experiments. The most important factor of capacitor performance is identified as whether the electrode configuration is symmetric or asymmetric. The second important factor is the resistance of bottom electrode, man

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15

Yang, Fu Siang, and 楊富翔. "Bridged Carbon Nanotubes across Interdigital and Finger-to-finger Electrodes as Sensors." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/27682256911681946187.

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碩士<br>國立高雄大學<br>電機工程學系--先進電子構裝技術產業研發碩士專班<br>102<br>This thesis used finger-to-finger (FF) and interdigital (ID) electrodes allowing carbon nanotubes across their gap used for optical, temperature and strain transducers. Both of the FF and ID devices are sensitive to high intensity illumination due to carrier excitation that enhances their conductivity. The temperature measurement used rubber heating element, current-temperature controller to approximate the temperature resistance coefficient, which is in the range of 1~2%/oC. The strain transducer used a customized tool to enforce devices a st

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16

Ku-MengHsieh and 謝谷孟. "Glycated Hemoglobin Affinity Biosensors with Ring-Shaped Interdigital Electrodes on Impedance Measurement." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/39795762449436827341.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>101<br>Glycated hemoglobin (HbA1c) is one of the most important diagnostic assays for the long-term mark of glycaemic control in diabetes. This study presents an affinity biosensor for HbA1c detection based on impedance measurement, the detection process of which is label-free requiring no additional reagents, and features low cost and low sample volume. The ring-shaped interdigital electrodes (RSIDEs) are designed to promote the distribution uniformity and immobilization efficiency of HbA1c, and are further employed to characterize the impedance change and identi

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17

Shih, Hung-Ju, and 施宏儒. "Immunoassay Chip Using Interdigital Electrodes with Nickel-Cobalt Nanowires to Enhance Analysis Sensitivity." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/15114638345939196360.

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碩士<br>中原大學<br>機械工程研究所<br>104<br>This thesis presents an immunoassay analysis chip consisting of copper interdigitated electrodes (Cu-IDE) and nickel-cobalt alloy nanowires (Ni-Co NWs). The Ni-Co NWs have specific binding affinity with histidine-tagged proteins based on the principle of immobilized metal affinity chromatography (IMAC) so that the immunoassay can be performed on the Ni-Co NWs. The Cu-IDE was fabricated by the photolithography process; while the Ni-Co nanowires were synthesized by potentiostatic electrodeposition method using a porous anodic aluminum oxide (AAO) as template for n

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18

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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19

Susanti, Diah, and 珊蒂. "Electrochemical Capacitors of Anhydrous and Hydrous RuO2 Using Two Configurations of Parallel-Plate and Interdigital Electrodes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/83896161072576716899.

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博士<br>國立臺灣科技大學<br>化學工程系<br>96<br>Structural electrodes of anhydrous RuO2 vertical nanorods encased in hydrous RuO2 have been prepared via chemical vapor deposition (CVD) followed by electrochemical deposition and arranged in parallel-plate configurations. The composite structures are studied using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The capacitive properties are measured using cyclic voltammetry and impedance spectroscopy. In a miniaturized configuration, the CVD grown structure provides a connecting backbone

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Huang, Ting-Hsiang, and 黃鼎翔. "A Polymer Humidity Sensor Based on Interdigital Electrodes for Environmental Humidity and Human Skin Moisture Applications." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/00453508865783715409.

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碩士<br>中原大學<br>電子工程研究所<br>95<br>Humidity sensors have been investigated for many years. In general, the humidity sensors are applied in environmental detection and control. For household electric appliances, there are hygrometers, dehumifying dryer, humidity controlled chamber and so on. However, an interesting issue is that not only the air but also any creature hold the water within. Nowadays bioengineering applications develop soon and dermatocosmetic research follows to develop. The detection of water content of the skin reveals significance for skin diagnostic. Hence, it is valuable and fe

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21

Sousa, Bárbara Mamede de. "In vitro stimulation of osteoblasts using capacitive interdigitated electrodes to improve implant osseointegration." Master's thesis, 2018. http://hdl.handle.net/10773/25373.

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Given the growing global incidence of musculoskeletal disorders and the rising frequency of several prosthetic revision surgeries, it becomes crucial to develop new active prostheses that comprise controllable stimuli and allow for osseointegration, avoiding failures in implant fixation. Ideally, active prostheses will incorporate biophysical actuation systems that promote osteoconduction and osseointegration. These could apply electromagnetic stimuli to surrounding tissues, since the bone presents natural endogenous electric currents. Considerable research already revealed positive effects of

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