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Tesis sobre el tema "2D arrays"

Autor: Grafiati
Publicado: 10 de marzo de 2023
Última modificación: 31 de julio de 2025

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1

Varum, Tiago Miguel Valente. "Nonuniform 2D microstrip antenna arrays for wireless applications." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17373.

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Doutoramento em Engenharia Electrotécnica<br>Wireless communications have undergone over the last decades a tremendous progress as a consequence of the exponential growth in demand for mobile devices, and nowadays are more and more involved in people's lives. This presence is re ected through the use of a large number of applications of which they become increasingly dependent on. The antenna, in its most di erent forms, are crucial elements in the establishment this type of communication. Each application involves a number of speci c characteristics, whereby, the improvement of wireles
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2

Dziewierz, Jerzy. "2D ultrasonic phased arrays for quantitative characterisation of complex defects." Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=26012.

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Ultrasonic inspection can be consideredas one of many ways the technical system - installation or vehicle - can be made economical and safe. Contemporary ultrasonic systems are capable of detecting a wide variety of mechanical defects and flaws that may or may not affect the operation of a given product. Ultrasonic testing techniques are widely accepted for quality control and material testing. Moreover, the technology is proven, well-understood and widely used. Upon detecting a flaw, a decision has to be made to ensure the component is fit for the purpose: is the flaw acceptable or is repair
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3

Diarra, Bakary. "Study and optimization of 2D matrix arrays for 3D ultrasound imaging." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10165/document.

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L’imagerie échographique en trois dimensions (3D) est une modalité d’imagerie médicale en plein développement. En plus de ses nombreux avantages (faible cout, absence de rayonnement ionisant, portabilité) elle permet de représenter les structures anatomiques dansleur forme réelle qui est toujours 3D. Les sondes à balayage mécaniques, relativement lentes, tendent à être remplacées par des sondes bidimensionnelles ou matricielles qui sont unprolongement dans les deux directions, latérale et azimutale, de la sonde classique 1D. Cetagencement 2D permet un dépointage du faisceau ultrasonore et donc
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4

Labuhn, Henning. "Rydberg excitation dynamics and correlations in arbitrary 2D arrays of single atoms." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLO002/document.

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Dans cette thèse, nous mesurons la dynamique cohérente et les corrélations spatiales des excitations Rydberg dans des matrices 2D d’atomes uniques.Nous utilisons un modulateur spatial de lumière pour façonner la phase spatiale d'un faisceau laser de piégeage optique avant de le focaliser avec une lentille asphérique de grande ouverture numérique. En imprimant une phase appropriée sur le faisceau laser, nous pouvons créer des matrices 2D de pièges optiques, de forme arbitraire et facilement reconfigurables, avec jusqu'à 100 pièges séparées de quelques micromètres. Les pièges sont chargés à part
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5

Ko, Hyunhyub. "Design of hybrid 2D and 3D nanostructured arrays for electronic and sensing applications." Diss., Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22606.

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This dissertation presents the design of organic/inorganic hybrid 2D and 3D nanostructured arrays via controlled assembly of nanoscale building blocks. Two representative nanoscale building blocks such as carbon nanotubes (one-dimension) and metal nanoparticles (zero-dimension) are the core materials for the study of solution-based assembly of nanostructured arrays. The electrical, mechanical, and optical properties of the assembled nanostructure arrays have been investigated for future device applications. We successfully demonstrated the prospective use of assembled nanostructure arrays fo
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6

Beyer, Griffin Joseph. "Large Area 2D Electronic Molecular Sensor Arrays via Photonic Annealing of Amorphous Sputtered Mos2." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1582624657416084.

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7

Longo, Danilo. "Engineering topological states in arrays of magnetic molecules in interaction with a 2D superconductor." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS224.

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Des études récentes ont prédit que l'interaction entre un supraconducteur 2D et du magnétisme local pourrait induire une supraconductivité topologique accompagnée d'états de bord de type Majorana. Pour relever ce défi, nous avons étudié un système basé sur l’interaction entre des auto-assemblages d’aimants moléculaires, tels que les phtalocyanines de manganèse (MnPcs), sur des films minces de plomb (1 et 3 monocouches) épitaxiés sur des surfaces de Si(111) qui montrent une supraconductivité 2D. Nos expériences de Microscopie à effet tunnel (STM) ont révélé que l'adsorption d’une petite quantit
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8

Afridi, Muhammad Zeeshan, Muhammad Umer, and Daniyal Razi. "Design and simulation of beam steering for 1D and 2D phased antenna arrays using ADS." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-22566.

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Phased arrays eliminate the problems of mechanical steering by using fast and reliable electronic components for steering the main beam. Modeling and simulation of beam steering for 1D and 2D arrays is the aspect that is considered in this thesis. A 1D array with 4 elements and a 2D array with 16 elements are studied in the X-band (8-12 GHz). The RF front-end of a phased array radar is modeled by means of ADS Momentum (Advanced design system).
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9

Ullal, Chaitanya K. (Chaitanya Kishore). "2D and 3D periodic templates through holographic interference lithography : photonic and phononic crystals and biomimetic microlens arrays." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33404.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.<br>Includes bibliographical references (leaves 121-133).<br>In this thesis a simple technique for controlling structure via holographic interference lithography was established and implemented. Access to various space groups including such important structures as the level set approximations to the Diamond, the Schwartz P structure, the FCC, and the non centrosymmetric Gyroid structures were demonstrated. The ability to make 3D structures over a large area, with low defect densities and pe
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10

Roux, Emmanuel. "2D sparse array optimization and operating strategy for real-time 3D ultrasound imaging." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1255/document.

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Aujourd'hui l'utilisation de l'échographie 3D en cardiologie est limitée car l'imagerie de la totalité du myocarde sur un cycle cardiaque, sans apnée, reste un défi technologique. Une solution consiste à réduire le nombre de capteurs dans les sondes échographiques matricielles afin d'alléger le procédé d'acquisition: ces sondes sont dites parcimonieuses. Le but de cette thèse est de proposer les meilleures dispositions d'un nombre réduit de capteurs piézo-électriques répartis sur la surface active de la sonde afin d'optimiser leur capacité à produire des images homogènes en termes de contraste
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11

Kiflu, Henok Gidey. "Improved 2D and 3D resistivity surveys using buried electrodes and optimized arrays: The multi-electrode resistivity implant technique (MERIT)." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6524.

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This thesis presents a novel resistivity method called Multi-Electrode resistivity technique (MERIT) that is used for high resolution imaging of complex geologic features at depth and near the edges of survey lines. The MERIT electrodes are especially shaped and designed to be self-driven using a robust-direct push technique. Measurements are taken using optimized arrays that are generated using a modified version of the “Compare-R” optimization algorithm. This work focused on both two-dimensional (MERIT2D) and three-dimensional (MERIT3D) applications of the buried array and show the relevance
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12

Pfeifer, Hannes [Verfasser], Oskar [Akademischer Betreuer] Painter, and Stefan [Gutachter] Götzinger. "Silicon optomechanical crystals for arrays - tunability, disorder and 2D designs for low temperature experiments / Hannes Pfeifer ; Gutachter: Stefan Götzinger ; Betreuer: Oskar Painter." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/116695112X/34.

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13

Merabet, Lucas. "Etude d’algorithmes de reconstruction ultrasonore dans le domaine de Fourier pour l’imagerie rapide 2D et 3D en contrôle non- destructif." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLET060.

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Ce travail de thèse s’intéresse à l’imagerie ultrasonore multi-éléments pour le Contrôle Non-Destructif (CND), et vise à accélérer l’imagerie échographique en 2D et 3D. Les méthodes étudiées s’inspirent des algorithmes de reconstruction dans le domaine de Fourier (f-k) en imagerie sismique. La littérature montre que ces méthodes offrent un avantage numérique par rapport à celles dans le domaine temporel basées sur un principe de focalisation en émission/réception. D’autre part, l’essor des traducteurs multi-éléments a permis d’explorer de nouveaux modes d’émission, comme les ondes planes en im
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14

Tweedie, Andrew. "Spiral 2D array designs for volumetric imaging." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=23167.

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The use of linear phased arrays in NDE inspections has recently grown, resulting in faster inspection of components. Phased arrays are also used in underwater sonar and biomedical imaging. All applications require 2 dimensional (2D) arrays, capable of volumetric imaging, to further increase scan speed, and to allow tighter focussing on targets. However, 2D arrays have not found widespread use, mainly due to the large number of elements required to implement standard periodic designs. Alternative array configurations that feature a much lower element count offer a more pragmatic solution. This
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15

Yeshchenko, O. A., I. S. Bondarchuk, S. Z. Malynych, G. Chumanov, and I. Luzinov. "Laser-Induced Light Absorption in 2D Silver Nanoparticle Array." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42550.

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Nanocomposite comprising planar array of silver nanoparticles in polymer matrix was submitted to Ar laser irradiation at the wavelength of 488 nm. The extinction spectra of the array were measured as a function of the irradiation power density. Two collective surface plasmon modes, namely T and P, associated with particle dipoles parallel and perpendicular to the plane of the layer were identified. The extinction bands of T and P modes exhibit blue spectral shift with the increase of radiation power. P mode band broadens when laser power increases. The observed effects are explained by heatin
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16

Buder, Ulrich. "2D-Sensorik für das Monitoring statischer und dynamischer Wandschubspannungsfelder." Düsseldorf VDI-Verl, 2009. http://d-nb.info/994857705/04.

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17

Eberhart, Andreas Bernhard Georg. "Contention-free Scheduling of Communication Induced by Array Operations on 2D Meshes." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5077.

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Whole array operations and array section operations are important features of many data-parallel languages. Efficient implementation of these operations on distributed- memory multicomputers is critical to the scalability and high-performance of data-parallel programs. This thesis presents an approach for analyzing communication patterns induced by array operations and for using run-time information to schedule the message flow. The distributed, dynamic scheduling algorithms guarantee link-contention-free data transfer and utilize network resources almost optimally. They incur little overhead,
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18

Pujol, Hadrien. "Antennes microphoniques intelligentes : localisation de sources acoustiques par Deep Learning." Thesis, Paris, HESAM, 2020. http://www.theses.fr/2020HESAC025.

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Pour ma thèse de doctorat, je propose d’explorer la piste de l’apprentissage supervisé, pour la tâche de localisation de sources acoustiques. Pour ce faire, j’ai développé une nouvelle architecture de réseau de neurones profonds. Mais, pour optimiser les millions de variables d’apprentissages de ce réseau, une base de données d’exemples conséquente est nécessaire. Ainsi, deux approches complémentaires sont proposées pour constituer ces exemples. La première est de réaliser des simulations numériques d’enregistrements microphoniques. La seconde, est de placer une antenne de microphones au centr
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19

Maj, Tomasz. "Interconnection of a 2D vertical-cavity surface-emitting laser array to a receiver array via a fiber image guide." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0034/MQ64236.pdf.

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20

Maj, Tomasz. "Interconnection of a 2D vertical-cavity surface-emitting laser array to a receiver array via a fiber image guide." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30260.

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Parallel Optical Data Links (PODLs) have the potential to solve interconnection bottlenecks which are currently being experienced in high-speed communication and information processing systems. Such links often require a large number of channels and two-dimensional arrays of active optoelectronic devices are being developed. In order to interconnect these devices, fiber image guide technology consisting of a bundle of several thousand equally spaced optical fibers is being proposed to alleviate the need for dedicated fibers.<br>This thesis examines the implementation of a two-dimensional paral
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21

Lane, Christopher John Leslie. "The development of a 2D ultrasonic array inspection for single crystal turbine blades." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.651312.

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The aim of this thesis is to design and evaluate a non-destructive evaluation (NDE) system for the inspection of single crystal turbine blades. Turbine blades are the components within jet-engines that convert the hot, high-pressure gas exiting the combustion stage into mechanical power. During operation, these components are highly stressed and are surrounded by extremely high gas temperatures. As such, there is the potential for defects to initiate in-service. One way to ensure the structural integrity of these engine components is by periodically inspecting them for defects. The ability of
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22

Joshi, Rimesh M. "Analog and Digital Array Processor Realization of a 2D IIR Beam Filter for Wireless Applications." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1326776749.

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23

Webb, Charles T. "Analysis of off-axis enhancded [i.e. enhanced] dynamic wedge dosimetry using a 2D diode array." Muncie, Ind. : Ball State University, 2008. http://cardinalscholar.bsu.edu/374.

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24

Rosencrantz, Frans. "Development of a demo platform on mobile devices for 2D- and 3D-sound processing." Thesis, Uppsala universitet, Elektricitetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415154.

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This thesis project aims for the development of a demonstration platform on mobile devices for testing and demonstrating algorithms for 2D and 3D spatial sound reproduction. The demo system consists of four omnidirectional microphones in a square planar array, an Octo sound card (from Audio Injector), a Raspberry Pi 3B+ (R-Pi) single-board computer and an inertial measurement unit (IMU) located in the center of the array. The microphone array captures sound, which is then digitized, and in turn, transferred to the R-Pi. On the R-Pi, the digitized sound signal is rendered through the directiona
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25

Genua, Maria. "Combinatorial surface-based electronic tongue development : Analytical applications and conception of 2D and 3D biomimetic surfaces." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENI044/document.

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L'objectif de cette thèse est le développement d'une langue électronique avec une méthode simplifiée d'obtention de récepteurs à réactivité croisée. Ces récepteurs sont préparés par une approche combinatoire novatrice qui consiste au mélange et à l'auto-assemblage de deux disaccharides. Le couplage de ces récepteurs avec un système de détection d'imagerie par résonance des plasmons de surface nous a permis de réaliser une langue électronique capable de différencier des échantillons de différentes complexités, y compris des protéines pures et des mélanges complexes. Cela se fait grâce aux profi
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26

Boubekeur, Ahmed. "Conception d'architectures intégrées de traitement d'image de bas niveau." Phd thesis, Grenoble INPG, 1992. http://tel.archives-ouvertes.fr/tel-00341394.

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27

Guerif, Benjamin. "Conception d’une sonde programmable, polyvalente et abordable pour l'imagerie médicale ultrasonore volumétrique en temps réel." Electronic Thesis or Diss., Université Paris sciences et lettres, 2024. http://www.theses.fr/2024UPSLS041.

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Selon l’Organisation Mondiale de la Santé, les maladies cardiovasculaires sont la principale cause de décès dans le monde avec 17.9 millions de décès soit 32% des morts constatés en 2019. L’échocardiographie transthoracique (TTE), une technique d’imagerie ultrasonore non invasive et non irradiante, s’est alors imposée comme un outil de diagnostic efficace permettant d’identifier les dysfonctionnements du muscle cardiaque. Cette technique permet alors de procéder à une analyse morphologique et cinétique du cœur à l’aide de techniques d’imagerie dites conventionnelles.D’autres techniques alterna
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28

Oukacine, Marina. "Étude expérimentale et numérique des écoulements à surface libre en présence d'obstacles émergés et faiblement submergés." Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC1019.

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Selon le Ministère de la Transition Écologique et Solidaire, les inondations sont le principal risque naturel en France. Du fait du dérèglement climatique, les inondations extrêmes deviendront plus fréquentes. Les personnes et les biens, i.e. habitations, installations industrielles, doivent donc être protégés contre ces crues pour lesquelles les données sont très rares voire inexistantes. Lorsque l’on passe d’une crue faible à une crue extrême, l’extension spatiale de l’inondation en lit majeur varie fortement. La nature des obstacles rencontrés varie : végétation basse, arbres, habitations..
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29

Khaoua, Ibtissame. "Approche quantitative de la bio-chimiluminescence ultrafaible : oxydation et métabolisme Detectivity Optimization to Detect of Ultraweak Light Fluxes with an EM-CCD as Binary Photon Counter Array 3D To 2D Stochastic Concentration of Highly Diluted Light Reveals Ultraweak Chemi- and Bio-Luminescence." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASL005.

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L’émission de lumière par les tissus vivants, probablement liée au métabolisme oxydatif, est connue depuis des décennies, tout comme la luminescence de certaines réactions chimiques très simples en milieu aqueux. Ces phénomènes restent très mal connus en raison de l’extrême faiblesse de lumière produite, appelée de ce fait "luminescence ultrafaible". Dans cette thèse, nous proposons d’abord un dispositif expérimental original pour quantifier avec une très grande sensibilité la luminescence produite par unité de volume de l’échantillon.Le seuil de détection atteint est ≈ 1 p
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30

Rabideau, Brooks Douglas 1979. "The self-assembly of colloidal particles into 2D arrays." Thesis, 2007. http://hdl.handle.net/2152/3645.

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As the feature size of new devices continues to decrease so too does the feasibility of top-down methods of patterning them. In many cases bottom-up methods are replacing the existing methods of assembly, as having building blocks self-organize into the desired structure appears, in many cases, to be a much more advantageous route. Self-assembled nanoparticulate films have a wide range of potential applications; high-density magnetic media, sensing arrays, meta-materials and as seeds for 3D photonic crystals to name a few. Thus, it is critical that we understand the fundamental dynamics of
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31

Wang, Chien-hsun, and 王建勳. "Periodic arrays 2D well-ordered nanostructures fabricated via nanosphere lithography." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/31538189638263127424.

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碩士<br>國立中央大學<br>化學工程與材料工程研究所<br>96<br>In the present study, we have demonstrated that 2D periodic arrays of nickel metal and silicide nanodots can be successfully fabricated on (111)Si substrates by using the polystyrene (PS) nanosphere lithography (NSL) technique and thermal annealing. The results of an investigation on the interfacial reactions between the Ni nanodots and (111)Si substrates after different heat treatments are reported. From the TEM and SAED analysis, only epitaxial NiSi2 nanodots were found to form on (111)Si at a temperature as low as 300 °C. The results indicated that the
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32

Su, YaWen, and 蘇雅雯. "Fabrication of 2D arrays of Cadmium Selenide nano-pillars for optics applications." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/27447911538383737542.

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碩士<br>國立臺灣師範大學<br>化學研究所<br>90<br>We demonstrate a unique method for fabrication of two dimensional (2D) arrays of CdSe pillars with large aspect (height-to-width) ratios for optics applications. The fabrication technique combines electron beam lithography for periodic pattern definition and chemical electrodeposition for the growth of 2D arrays of CdSe pillars. The arrays are made on a relatively small area, about square of tenths of microns. In this method, cyclic voltammetric deposition with resist-coated indium tin oxide substrate as the working electrode, Pt slab as the counter-
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33

Chih-ShanChang and 張志山. "Plasmonic Resonant Properties of Silver Hemispherical Nano-Shell Structures in 2D arrays." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/93223034136125095241.

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碩士<br>國立成功大學<br>光電科學與工程學系<br>102<br>Localized surface plasmon resonance (LSPR), observed in metal nanoparticle arrays interacting with an incident light field, is an emerging research area for surface-enhanced -Raman-scattering (SERS) biomedical sensing applications. The plasmonic properties of metal nanoparticles can be easily tuned by varying the shape, size and arrangement along with the dielectric environment. Particles with coreshell structure provide an extra degree of freedom to tune the LSPR wavelength. The array structure adds an extra tuning capability by setting the periodicity near
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34

Rahman, Mohammad Moshiur. "Analysis of 2D spatial filtering of simulated muscle action potential using grid arrays." 2005. http://etd.utk.edu/2005/RahmanMohammad.pdf.

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Thesis (M.S.) -- University of Tennessee, Knoxville, 2005.<br>Title from title page screen (viewed on August 31, 2005). Thesis advisor: Mohammed Ferdjallah. Document formatted into pages (x, 123 p. : ill. (some col.)). Vita. Includes bibliographical references (p. 119-122).
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35

"Surface plasmon polaritons (SPPs) induced polarization conversion in 2D metallic nano-hole arrays." 2015. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1292012.

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Yiu, Lai Yin = 在二維金屬納米洞陣列上表面等離子激元導致的偏振轉換 / 姚勵賢.<br>Thesis M.Phil. Chinese University of Hong Kong 2015.<br>Includes bibliographical references (leaves 90-96).<br>Abstracts also in Chinese.<br>Title from PDF title page (viewed on 15, December, 2016).<br>Yiu, Lai Yin = Zai er wei jin shu na mi dong zhen lie shang biao mian deng li zi ji yuan dao zhi de pian zhen zhuan huan / Yao Lixian.
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36

Wong, Shao-Lan, and 翁紹蘭. "Periodic arrays of silicide nanodots and 2D well-ordered nanostructures fabricated via nanosphere lithography." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/78357209241306922519.

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碩士<br>國立中央大學<br>化學工程與材料工程研究所<br>95<br>The present study has demonstrated that 2D well-ordered arrays of nickel and cobalt metal nanodots were successfully fabricated on (001) Si and SiGe substrates by using the polystyrene nanosphere lithography (NSL) technique. The interfacial reactions of the metal nanodot arrays on Si and SiGe substrates after different heat treatments have been investigated. From the TEM and SAED analysis, epitaxial NiSi2 and CoSi2 nanodots were found to form at a temperature as low as 300 ℃、500 ℃, respectively. The results indicated that the growth of epitaxial NiSi2 and
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37

Lu, Shao-Wei, and 呂紹瑋. "Formation of Silicide Nanodot Arrays and 2D Periodic Nanostructures Using Self-Assembly Nanosphere Lithography." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/99357801097099890743.

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碩士<br>國立中央大學<br>化學工程與材料工程研究所<br>94<br>As the device dimensions scale down to nanometer region, in-depth understanding the reaction mechanisms between the nanoscale metal thin film and semiconductor substrate will play an important role in defining the use of these nanoscale building blocks in advanced nanodevices. Therefore, in this study,particular emphases are focused on the fabrication of large-area, 2D-ordered nickel and cobalt metal dot arrays and the interfacial reactions of nickel and cobalt metal dots on Si substrates after different heat treatments. To fabricate large periodic array
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Bartlett, Chad. "Design of an 8x8 cross-configuration Butler matrix with interchangeable 1D and 2D arrays." Thesis, 2019. http://hdl.handle.net/1828/10989.

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An ever-increasing demand for wider bandwidths in communication, radar, and imaging systems has emerged. In order to facilitate this growing demand, progressive research into millimeter-wave technologies has become vital in achieving next generation networks such as 5G. Being cost effective and easy to manufacture, Substrate Integrated Waveguide (SIW) circuits have been demonstrated as a viable candidate for high-frequency applications due to their low-loss, high quality-factor, and high power-handling capabilities.Research on beam-forming networks, specifically the Butler matrix, h
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Yen-LinChen and 陳彥琳. "Microfabricated arrays of soft, flexible and recyclable electrical contacts for characterization of 2D materials." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/xt5g9q.

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Huang, Shu Chi, and 黃書麒. "Dimension-Reduced Signal Processing Scheme for 2D Antenna Arrays-on the Application of DOA Estimation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/37668367172948782778.

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碩士<br>長庚大學<br>電機工程學系<br>99<br>To effectively reduce the super-complexity in 2D-ESPRIT(two dimensional Estimation of Signal Parameter via Rotational Invariance Techniques). This paper propose a one dimensional(1D) based “Tree structure algorithm” for estimating the 2D-DOAs of the signal impinging on a uniform rectangular array(URA). The key ideal of the proposed algorithm is to repeat utilized 1-D ESPRIT algorithm and subspace projector with regular rule. Thus, transmitted azimuths and elevations can be estimated and paired more easily.
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Liu, Chia-Wei, and 劉家偉. "A Study on the 2D Crystallographic Analysis and the Second Harmonic Generation of Chromium Nanoparticle Arrays." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/84901694075119302694.

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Liu, Chieh-Chun, and 劉玠均. "A Study on the 2D Crystallographic Analysis and the Second Harmonic Generation of Nickel Nanoparticle Arrays." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/42687590530676109939.

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Ho, Chih-Chiang, and 何志強. "A Study on the 2D Crystallographic Analysis and the Second Harmonic Generation of Silver Nanoparticle Arrays." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/08317747103144867706.

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44

Mattesini, Paolo, Piero Tortoli, Enrico Boni, Hervé Liebgott, and Olivier Basset. "Development of methods and electronic circuits for ultrasound imaging based on innovative probes." Doctoral thesis, 2020. http://hdl.handle.net/2158/1186186.

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I sistemi di imaging ad ultrasuoni (US), sebbene siano stati oggetto di intense indagini da parte di molti gruppi di ricerca in tutto il mondo, non hanno ancora raggiunto la piena maturità. Le sonde ad ultrasuoni, in particolare, hanno ampi margini di miglioramento, non solo in termini di materiali e configurazione degli elementi, ma anche di modalità di eccitazione. Il mio lavoro di dottorato è stato impegnato nello sviluppo di circuiti elettronici e metodi per l'imaging ad ultrasuoni basati su sonde innovative. In primo luogo, ho sviluppato i circuiti elettronici necessari per rendere comp
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(5930366), Siddarth Vyraghrapuri Sridharan. "EXTRACELLULAR METABOLIC PROFILING: MEASUREMENT OF SURFACE CONCENTRATIONS AND FLUXES TO DETERMINE CELLULAR KINETICS FROM 2D CULTURES USING ELECTROCHEMICAL MICROELECTRODE ARRAYS." Thesis, 2020.

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In 2D cell cultures uptake/release of various metabolic analytes such as glucose, lactate or metabolic by-products like hydrogen peroxide from/to the extracellular environment results in concentration gradients. The magnitude, direction, and time scales of these gradients carries information that is essential for internal cellular processes and/or for communication with neighboring cells. This PhD research work focusses on the design, fabrication and characterization of electrochemical microelectrode arrays (MEAs) optimized to be positioned in commonly used 2D cell culture setups. Importantly,
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Lin, Yao-hsing, and 林耀星. "Fabrication of Site- and Size-controllable Periodic Arrays 2D Well-ordered Si Nanostructures by Plasma Modified Nanosphere Lithography and Chemical Wet Etching Processes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/23119866571253488366.

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碩士<br>國立中央大學<br>化學工程與材料工程研究所<br>100<br>The present study has demonstrated the successful fabrication of density-, size- and shape-controllable Si nanostructure arrays on Si substrates of different orientation by using plasma modified nanosphere lithography and anisotropic wet etching process. The morphologies, crystal structures, compositions, optical and surface properties of the Si nanostructure arrays produced have been systematically investigated by SEM, AFM, TEM, SAED, EDS, XPS, UV-Vis and contact angle analyses. For the fabrication of periodic Si nanohole arrays, we take advantage of O2
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Weber, Arnim. "Transkriptom- und Proteom-Analysen von Escherichia coli unter hyperosmotischen Stressbedingungen und biochemische Charakterisierung von UspG." Doctoral thesis, 2003. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2003112611.

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Giangrossi, Claudio. "Development and real-time implementation of novel 2-D and 3-D imaging techniques on a research scanner." Doctoral thesis, 2022. http://hdl.handle.net/2158/1272194.

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In the last decades, ultrasound imaging systems have become more and more popular thanks to their capability to investigate tissues in safe, cost effective, and non-invasive way. Their role in diagnostic imaging has become fundamental in several medical specialties, thanks also to the introduction of advanced echographic systems fostered by the efforts of several research laboratories around the world. Such efforts are more frequently based on the use of special research scanners, characterized by flexible hardware and programmable software and firmware. These features have been demonstrated i
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Rossi, Stefano, and Piero Tortoli. "Development and validation of novel approaches for real-time ultrasound vector velocity measurements." Doctoral thesis, 2021. http://hdl.handle.net/2158/1239650.

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Ultrasound imaging techniques have become increasingly successful in the medical field as they provide relatively low cost and totally safe diagnosis. Doppler methods focus on blood flow for the diagnosis and follow-up of cardiovascular diseases. First Doppler methods only measured the axial component of the motion. More recently, advanced methods have solved this problem, by estimating two or even all three velocity components. In this context, high frame rate (HFR) imaging techniques, based on the transmission of plane waves (PW), lead to the reconstruction of 2-D and 3-D vector maps of bloo
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Chen, Kuang-Yu, and 陳冠宇. "2D Array Synthesis Using 1D Filter Design Techniques." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/03914685485941272022.

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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>101<br>Beamforming is one of the array signal processing techniques. This paper is used for sound source detection. Using the plane wave to each sensor generated by different delays. Sensors are not the same as the energy received. With these delays and energy to estimate the direction and position of the sound source. But the sound source position is divided into near-field and far-field. The most of cases are the near-field beamformer. Traditional delay-and-sum beamforming weights are fixed at different angles are not the same width of the main lobe, which
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