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Dissertations / Theses on the topic 'Nano crystal'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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1

Zhu, Rui. "Integrated nano-optomechanics in photonic crystal." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS258/document.

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Les oscillateurs de référence de haute pureté sont actuellement utilisés dans un grand nombre d’applications allant du contrôle de fréquence aux horloges pour les radars, les GPS et l’espace... Les tendances actuelles dans ce domaine requièrent des architectures miniaturisées avec la génération de signaux directement dans la gamme de fréquences d’intérêt, autour de quelques GHz. Récemment, de nouvelles architectures basées sur les principes de l’optomécanique ont vu le jour dans ce but. De tels oscillateurs optomécanique génèrent non seulement des signaux hyperfréquences directement dans la ga

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2

Vizuete, Olivier. "Simulation study of phononic crystal structures." Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326118.

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Thermoelectric materials are important in today’s society with a variety of applications. The material properties that determinate the efficiency of a thermoelectric device are mostly constants. In order to develop more efficient thermoelectric devices new materials and solutions need to be made. Minimizing the thermal conductivity in thermoelectric materials is of great interest to make them more effective. One effective way of lowering the thermal conductivity is to introduce holes in the lattice and create a phononic crystal. The main focus of this master thesis has been on how to place t

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3

Al-Zangana, Shakhawan. "Nano- and micro-particle doped liquid crystal phases." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/nano-and-microparticle-doped-liquid-crystal-phases(31dbb051-7d9c-4780-bda0-d58773846de0).html.

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This thesis presents the investigation of the liquid crystal (LC) - particle suspensions. Particles from nano- to micro-size, spherical to two-dimensional shapes, with different functionality are dispersed into nematic and smectic phases. The aim is to create ordered nanoparticle (NP) assemblies and thereby modify the common properties of the liquid crystal, such as dielectric anisotropy and electro-optical, revealing any interaction between particles and LC properties. It is found that for concentrations (>0.5vol%), the ferroelectric NPs have increased the sensitivity of the nematic liquid cr

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4

Hurley, Evan Patrick. "A crystal engineering approach for the design of multicomponent crystals and assembly of nano-scale architectures." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/16004.

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Doctor of Philosophy<br>Department of Chemistry<br>Christer B. Aakeroy<br>The work presented in this thesis has demonstrated that supramolecular synthons can be used to make multicomponent crystals, and various synthons can be combined to make supermolecules. The synthons can also be used to construct nanoscale assemblies. Molecules containing single and multiple hydrogen-bond (HB) and halogen-bond (XB) acceptor sites have been synthesized in an effort to carry out supramolecular synthesis in order to establish a reliable hierarchy for intermolecular interactions. Pyrazole-based molecules hav

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5

Mei, Shan. "Novel Three Dimensional C_3v Symmetric Nano-molecules Based on Polyhedral Oligomeric Silsesquioxanes (POSS) Nano-atoms." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367361671.

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6

Brunstein, Maia. "Nonlinear Dynamics in III-V Semiconductor Photonic Crystal Nano-cavities." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00606315.

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L'optique non linéaire traite les modifications des propriétés optiques d'un matériau induites par la propagation de la lumière. Depuis ses débuts, il y a cinquante ans, des nombreuses applications ont été démontrées dans presque tous les domaines de la science. Dans le domaine de la micro et nano-photonique, les phénomènes non linéaires sont à la fois au cœur d'une physique fondamentale fascinante et des applications intéressantes: ils permettent d'adapter et de contrôler le flux de lumière à une échelle spatiale inferieure à la longueur d'onde. En effet, les effets non linéaires peuvent être

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7

Marseglia, Luca. "Nano-structures coupled to optically active defects in diamond." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.573911.

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8

Reinke, Charles M. "Design, simulation, and characterization toolset for nano-scale photonic crystal devices." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33932.

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The objective of this research is to present a set of powerful simulation, design, and characterization tools suitable for studying novel nanophotonic devices. The simulation tools include a three-dimensional finite-difference time-domain code adapted for parallel computing that allows for a wide range of simulation conditions and material properties to be studied, as well as a semi-analytical Green's function-based complex mode technique for studying loss in photonic crystal waveguides. The design tools consist of multifunctional photonic crystal-based template that has been simulated with no

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9

Liang, Hong. "Crystal plasticity modelling of lengthscale effects in deformation and nano-indentation." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496995.

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10

Pendergast, Megan. "Environmental effects on nano-wear of gold and KBr single crystal." [Tampa, Fla.] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002306.

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11

Shi, Xiaohua. "Design, fabrication and characterization of one dimensional photonic crystal devices." Thesis, University of Bath, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485957.

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Photonic crystals (PhCs) are periodically structured electromagnetic media, generally characterised by not permitting light of defined ranges of frequency to propagate through the structure. These disallowed ranges of frequency are known as photonic band gaps. The intentional introduction of defects into the crystal gives rise to localized electromagnetic states that provide a mechanism for the control of the propagation of photons through PhCs. In the case of one dimensional (1-D) PhCs, the introduction of a single defect into a finite PhC results in the formation of a resonant cavity structu

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12

Chen, Yan. "SINGLE CRYSTAL ENGINEERING OF AMORPHOUS-CRYSTALLINE BLOCK COPOLYMERS CRYSTALLIZATION, MORPHOLOGY AND APPLICATIONS." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1133226076.

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13

Chen, Zhihui. "Light manipulation in micro and nano photonic materials and structures." Doctoral thesis, KTH, Teoretisk kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94081.

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Light manipulation is an important method to enhance the light-matter interactions in micro and nano photonic materials and structures by generating usefulelectric field components and increasing time and pathways of light propagationthrough the micro and nano materials and structures. For example, quantum wellinfrared photodetector (QWIP) cannot absorb normal incident radiation so thatthe generation of an electric field component which is parallel to the original incident direction is a necessity for the function of QWIP. Furthermore, the increaseof time and pathways of light propagation in t

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14

Sigdel, Krishna P. "Phase transition studies of liquid crystal colloids with solvents and nano-solids." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-dissertations/137.

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Liquid crystals (LCs) are anisotropic fluids that exhibit numerous thermodynamically stable phases in between an isotropic liquid and a three-dimensionally ordered solid. In their simplest ordered phase, the nematic, LCs show orientational order due to molecular self assembly and at the same time maintaining fluid flow properties. In the smectic phase, they show both orientational and partial translational order characterized by a 1-d density wave. Liquid crystalline substances have been extensively studied due to their applications and as important physical models of self-assembly. The effect

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15

Miller, Max. "An Integrated Experimental and Simulation Study on Ultrasonic Nano-Crystal Surface Modification." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378394103.

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16

Chang, Hyung-Jun. "Analysis of nano indentation size effect based on dislocation dynamics and crystal plasticity." Grenoble INPG, 2009. http://www.theses.fr/2009INPG0134.

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Ce mémoire de thèse concerne une étude expérimentale et numérique de l'essai d'indentation dans des monocristaux de cuivre. Des essais d'indentation sont réalisés sur différentes orientations du monocristal. L'effet de l'orientation de l'axe d'indentation est quantifié sur la modification de la courbe de charge et sur la forme de l'empreinte résiduelle observée par microscopie à force atomique. On observe un effet de taille pour de faibles profondeurs de pénétration de l'indenteur. Les simulations sont réalisées en utilisant un modèle de plasticité cristalline à variables internes qui prend en

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17

Hui, Pui Chuen. "Optomechanics and nonlinear mechanics of suspended photonic crystal membranes." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:13068536.

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The recent demonstration of strong interactions between optical force and mechanical motion of an optomechanical structure has led to the triumphant result of mechanical ground-state cooling, where the quantum nature of a macroscopic object is revealed. Another intriguing demonstration of quantum physics on a macroscopic level is the measurement of the Casimir force which is a manifestation of the zero- point energy. An interesting aspect of the Casimir effect is that the anharmonicity of the Casimir potential becomes significant when the separation of microscale objects is in the sub-100nm re

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18

Li, Jianyou. "Oligonucleotide guanosine conjugated to gallium nitride nano-structures for photonics." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9065/.

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In this work, I studied the hybrid system based on self-assembled guanosine crystal (SAGC) conjugated to wide-bandgap semiconductor gallium nitride (GaN). Guanosine is one of the four bases of DNA and has the lowest oxidation energy, which favors carrier transport. It also has large dipole moment. Guanosine molecules self-assemble to ribbon-like structure in confined space. GaN surface can have positive or negative polarity depending on whether the surface is Ga- or N-terminated. I studied SAGC in confined space between two electrodes. The current-voltage characteristics can be explained

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19

Makles, Kevin. "Nano-membranes à cristal photonique pour l'optomécanique." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066457/document.

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Dans ce manuscrit, nous présentons le développement d'un résonateur optimisé pour observer des effets quantiques du couplage entre un resonateur mécanique et le champ electromagnétique via la pression de radiation. Celui-ci doit combiner une réflectivité élevée, une faible masse, ainsi qu'un facteur de qualité mécanique élevé. Le résonateur consiste en une membrane suspendue de quelques centaines de nanomètres d’épaisseur, et de quelques dizaines de microns de côté, présentant une réflectivité importante grâce à l'utilisation de cristaux photoniques. Après une étude détaillée de la physique d'

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20

Clarke, Colin. "Development of an automated identification system for nano-crystal encoded microspheres in flow cytometry." Thesis, Cranfield University, 2008. http://dspace.lib.cranfield.ac.uk/handle/1826/4036.

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Quantum dot encoded microspheres (QDEMs) offer much potential for bead based identification of a variety of biomolecules via flow cytometry (FCM). To date, QDEM subpopulation classification from FCM has required significant instrument modification or multiparameter gating. It is unclear whether or not current data analysis approaches can handle the increased multiplexed capacity offered by these novel encoding schemes. In this thesis the drawbacks of currently available data analysis techniques are demonstrated and novel classification methods proposed to overcome these limitations. A commerci

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21

SALOMONI, MATTEO. "Boosting scintillation based detection." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2019. http://hdl.handle.net/10281/241285.

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Durante il mio dottorato di ricerca ho studiato in modo approfondito I cristalli scintillanti, trovando diversi limiti legati all’emissione di luce, proprietà ottiche e stabilità chimica. Sono stati sviluppati diversi banchi di lavoro specifici per le caratterizzazioni presentate nella tesi e molto lavoro è stato dedicato alla finalizzazione dei programmi di simulazione necessari alla descrizione del sistema scintillatore-photorivelatore. Uno studio della maggior parte degli Approcci classici, sul tema dell’ottimizzazione degli scintillatori, ha portato a confermare come si sia arrivati ad un

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22

Cyganok, Pavel. "Judrios magnetofotoninės sistemos nano dalelė – skystasis kristalas magnetooptinės savybės." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_182935-73352.

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Šiame darbe tiriamos skystojo kristalo su integruotomis kobalto nanodalelėmis optinės savybės. Panaudotos medžiagos: skystasis kristalas 5CB (penkiakomponentis cianobifenilas) ir kobalto nanodalelės kurių dydis 10nm. Tiriami pavyzdėliai su skirtingomis kobalto koncetracijomis (0,05%, 0,092%, 1,04%) skystajame kristale. Išmatuoti sugerties ir LD intensyvumo spektrai bangų ruože nuo 250 iki 700nm.<br>In this work I studied optical and manetooptical features of liquid crystal (LC) with integrated magnetic particles in magnetic field. I observed three different samples of LC with cobalt nanopartic

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23

Ren, He. "Crystal Engineering of Giant Molecules Based on Perylene Diimide Conjugated Polyhedral Oligomeric Silsesquioxane Nano-Atom." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1461014185.

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24

Swinteck, Nichlas Z. "Phase-Space Properties of Two-Dimensional Elastic Phononic Crystals and Anharmonic Effects in Nano-Phononic Crystals." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/228156.

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This dissertation contains research directed at investigating the behavior and properties of a class of composite materials known as phononic crystals. Two categories of phononic crystals are explicitly investigated: (I) elastic phononic crystals and (II) nano-scale phononic crystals. For elastic phononic crystals, attention is directed at two-dimensional structures. Two specific structures are evaluated (1) a two-dimensional configuration consisting of a square array of cylindrical Polyvinylchloride inclusions in air and (2) a two-dimensional configuration consisting of a square array of stee

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25

Laurens, Gaétan. "Laser generation of nanoparticles in liquids : new insights on crystal structure control and colloidal stability." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1161/document.

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L’engouement pour l’originalité des propriétés physiques des nanoparticules s’est accompagné d’un développement de nombreuses méthodes de synthèse depuis un demi siècle. Parmi elles, l’ablation laser en liquide permet de produire des nanoparticules avec des surfaces libres de tout contaminant et ce pour une multitude de combinaisons de matériaux et de solvants. Cependant, la simplicité apparente de cette technique dissimule la complexité des mécanismes physico-chimiques, ce qui entraîne actuellement un manque de contrôle des objets synthétisés. Tout d’abord, nous nous sommes intéressés à la ci

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蔡紫珊 and Tsz-shan Jacqueline Choy. "Enhancing the sensitivity and specificity of piezoelectric quartz crystal sensor by nano-gold amplification and molecularly imprintingtechnologies." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39558575.

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27

Chopin, Alexandre. "Photonic crystal sources of non-classical states of light." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP079.

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La photonique quantique intégrée promet d'amener l'optique quantique vers un dispositif pratique. L'objectif principal de ce domaine est d'atteindre une intégration évolutive pour diverses applications, notamment l'informatique quantique, la simulation, la communication et la détection. Dans un circuit quantique, des photons, qui portent l'état quantique, sont générés, manipulés à l'aide de composants linéaires et non linéaires, puis détectés. L'objectif de cette étude doctorale est de contribuer au développement de sources de lumière non classique efficaces et évolutives, pour la génération d

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28

Goubet, Nicolas. "Nano et supracristaux d'or : sur l'influence de la nanocristallinité." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066119/document.

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Cette thèse porte sur l'influence des défauts cristallins des nanocristaux d'or. Elle traite de la synthèse et de l'assemblage de nanocristaux d'or dont la taille et le taux de défauts cristallins sont contrôlés. Au cours de ce travail, une méthode permettant de séparer des nanocristaux de même taille mais soit mono-, soit polycristallines a été mise au point pour ensuite les utiliser comme graines de croissance cristalline afin d'étendre le contrôle de taille de 5 à 13 nm. Les propriétés plasmoniques ainsi que vibrationnelles de ces nanocristaux d'or ont pu ainsi être étudiées en fonction de

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29

Kodumuri, Pradeep. "IN-SITU GROWTH OF POROUS ALUMINO-SILICATES AND FABRICATION OF NANO-POROUS MEMBRANES." Cleveland State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=csu1243304850.

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Choy, Tsz-shan Jacqueline. "Enhancing the sensitivity and specificity of piezoelectric quartz crystal sensor by nano-gold amplification and molecularly imprinting technologies." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39558575.

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31

Sidhu, Kuldeep S. "Residual Stress Enhancement of Additively Manufactured Inconel 718 by Laser Shock Peening and Ultrasonic Nano-crystal Surface Modification." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535464760914267.

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32

Moille, Grégory. "Non-Linear Dynamics in Semiconductor Nano-Structures for Signal Processing." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS174/document.

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Cette thèse porte sur la numérisation de signaux hyperfréquences en utilisant une horloge optique, possédant une gigue temporelle très faible en comparaison des horloges électroniques. Une faible gigue est un facteur clé de l’échantillonnage à haute performance, car l’horloge commande l’ouverture d’une “porte” qui extrait les échantillons du signal à intervalles réguliers. Cette thèse décrit deux approches originales : l’échantillonnage purement optique et l’échantillonnage électro-optique.Une porte électro-optique se constitue d’une ligne coplanaire transportant le signal électrique. Cette li

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Gryn, Iryna. "Auto-assemblage de défauts structurels et de nano-objets dans des films cristaux liquides." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066710.

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Un intérêt scientifique croissant dans les cristaux liquides (LC) est née de leur capacité à guider l'assemblage des colloïdes1,2 et des nanoparticules (NPs)3-8 en configurations spatiales bien définies. Dans cette thèse, nous avons étudié les LC smectiques A (SmA) qui produisent 1D et 2D modèles de défauts de taille nanométrique9 avec sub-micrométrique périodicité et sont capables d'assembler des NP dans des structures ordonnées par défaut/NP interactions. La thèse a été axé sur deux tâches principales: l'élaboration d'une méthode fiable pour motifs de défaut de la création avec la symétrie e

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34

Lu, Yi Ju, and 呂易儒. "Effects of Liquid Crystal Polymer and Nano-particles on the Liquid Crystal Displays." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/03495349417163763005.

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碩士<br>長庚大學<br>電子工程學系<br>99<br>For LCD display module, pre-tilt angles is a very important parameter, and the pre-tilt angle represents the angle of LC molecules and alignment layer (Polyimide, PI).Because of this angle, by applying voltage to the LC molecules can twist toward the consistent direction. In addition, this could also prevent create reverse twist which could defect the alignment when applying voltage to cell. We proposed two methods of controlling the pre-tilt angles, and we also compared and contrasted how these two methods have effects to LCD display module. One method is by dire

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Jia-FangZhang and 張嘉芳. "Study on synthesis and magnetism of nano-hematite, nano-magnetite and nano-maghemite with different crystal morphologies." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/85525405426568850014.

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碩士<br>國立成功大學<br>地球科學系<br>102<br>The objective of this study is to investigate the magnetic properties of nano-hematite, nano-magnetite, and nano-maghemite with morphologies of nano-particle, nano-rod, nano-tube, and nano-ring. Four crystal morphologies of nano-hematite are synthesized by a hydrothermal method. Nano-magnetite is prepared via nano-hematite by using carbon reduction method. Nano-maghemite is obtained by oxidation of nano-magnetite. The particle-shaped nano-hematite has a granular morphology with aparticle size of 45~85 nm; the nano-rod is 50~100 nm in width and 250~350 nm in leng

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Lin, Yu-hsuan, and 林育璇. "The Study of Optical Properties of Nano Crystal Silicon." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/kss698.

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碩士<br>國立中山大學<br>光電工程研究所<br>96<br>In this thesis, using Micro-Photoluminescence (μ-PL), continuous-wave time-resolved photoluminescence (CWPL/TRPL) and Fourier transform infrared (FTIR) analysis, silicon rich nc-Si (nano-crystal Silicon) samples with various emission wavelength (760 30 nm and 390 10 nm) are investigated to understand the proper explanation of the emission mechanism. The model of increasing Si－O －Si bondings during thermal process by enhancing the annealing or deposition time, induced blue shifts in PL spectrums and increased the rate of Schockley-Read-Hall recombination which r

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Wu, Kuan-Ju, and 吳冠儒. "Unique properties of semiconductor and liquid crystal nano composites." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/05964410063982002830.

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碩士<br>國立臺灣大學<br>物理研究所<br>95<br>Abstract In this thesis we report the study of optical and electrical properties on the composites based on liquid crystals and CdS nanorods. Quite interesting results have been obtained from our studies, which are very useful for the understanding as well as application of these materials. They are presented as follow. The novel nanocomposite device reveals a very unique and useful behavior that the polarization of the emission from semiconductor nanorods can be controlled by an external bias. The large magnitude of polarization anisotropy of 0.63 can be quantit

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Pay-YuLee and 李培裕. "The Synthesis and Photoelectrochemical Applications of Nano Cu2ZnSnSe4 Crystal." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/90806124403734572947.

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博士<br>國立成功大學<br>微電子工程研究所<br>102<br>In this work, we report a systematic study of the growth and evolution mechanism of quaternary Cu2ZnSnSe4 (CZTSe) nanocrystals (NCs) in a polyetheramine solvent. Pure-phase CZTSe NCs were synthesized by a facile one-pot heating process. High-quality CZTSe NCs were easily obtained by mixing the precursors and simply heating them to the reaction temperature. Synthesis parameters, including reaction temperature, reaction time, and precursor concentration, which influence the morphology, size, and monodispersity of CZTSe NCs, were studied in detail. Time- and tem

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Chen, Guan-Hua, and 陳冠華. "The study of nano-sphere assembled photonic crystal slab." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/20966264409547032999.

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碩士<br>國立彰化師範大學<br>光電科技研究所<br>99<br>In this thesis, the fabrication and optical properties of nano-sphere assembled photonic crystal slab (PCS) have been investigated experimentally and theoretically. The experiment includes two parts: (1) the fabrications of single-layer close-packed nano-sphere array and silver shell on silicon nitride (SiN) membrane; (2) the studies of guiding-mode resonance and surface plasma resonance (SPR). In the simulation, the bend structures have been studied by utilizing plane wave method (PWM). In the fabrication part, the substrate was surface modified by reactive

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Wu, Kuan-Ju. "Unique properties of semiconductor and liquid crystal nano composites." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-0607200717320500.

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Huang, Tai-wei, and 黃泰瑋. "Two-Dimensional Photonic Crystal Devices Fabricatedby Nano-Imprint Lithography." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/01484942222603627441.

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碩士<br>國立中央大學<br>電機工程研究所<br>95<br>In this study, photonic crystal wavelength division multiplexer (WDM) and polarization filter based on SOI substrate have been demonstrated. The WDM is used to separate the electromagnetic wave at the wavelength of 1.55μm and 1.31μm. The polarization filter can be applied to leach the optical signal of TM polarization in the range of wavelength 1.3μm ~2.1μm. We use the plane wave expansion method (PWE) to simulate the band-gap distribution of the periodical arrayed structure and used finite-differential time-domain (FDTD) method to study the steady state elect

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Tse-JenWang and 汪澤仁. "Study of liquid crystal alignment based on periodic nano-wedgy structures via nano-imprint lithography." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/40263816512483897213.

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碩士<br>國立成功大學<br>光電科學與工程學系<br>100<br>In this study, we used the nanoimprint lithography (NIL) to fabricate the periodic nano-wedges groove for vertical alignment. The incline slope from nano-wedges can control LC raising-up direction on applied voltage. The periodic triangle structure was made on silicon wafer by Electron beam lithography, then we chose perfluoropolyether(PFPE) as a mold to replicate the periodic triangle structure on silicon master. A photoresist material of SU-8 used as an imprint material was coated on the ITO glass, and Poly(dimethylsiloxane) (PDMS) used as an vertical alig

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Yu, Ming-Wei, and 余明韋. "Effects of Nano-Particles-Doped Polyimide on Liquid Crystal Cells." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/09458583288470443109.

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碩士<br>逢甲大學<br>電機工程所<br>93<br>The purpose of this thesis is to study effects of nano-particle-doped polyimide on liquid crystal cells, to understand influence of nano-particle-doped polyimide on liquid crystal cells of interface trapped ions. The purpose of this thesis is including that 1. When high voltage static electricity is input on liquid crystal cells, image sticking is induced by Electro-Static Discharge. 2. The ions accumulate on the interface between polyimide and LC that can induce the phenomenon interface trapped ions in LC, this will influence the optical and electric property of

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Shie, Wun-Yi, and 謝文逸. "Study on Liquid Crystal Cells Doped with Nano-ITO Particles." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/43555129031062658258.

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碩士<br>逢甲大學<br>電機工程所<br>96<br>In this study, it was found that nano-conductive powders doped in liquid crystal cells can significantly and effectively reduce the image sticking effect for the display suffering a short pulse of electro-static discharge (ESD) stress. Nano-scaled Tin-doped Indium Oxide (ITO) powders were uniformly solved in the LC cells to form a suspension solution. Both electrical and optical characteristics for the doped cells and those without intentional doping were compared. According to the measurement results from the normal voltage holding ratio (VHR), lower frequency of

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Tsai, Shou-Chi, and 蔡守騏. "Mechanical behaviors of LiAlO2 single crystal in micro/nano scales." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/91083837352365665159.

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碩士<br>國立中山大學<br>材料與光電科學學系研究所<br>103<br>The deformation behavior and mechanical properties of  phase lithium aluminate LiAlO2 (-LAO) single crystal under various loading conditions were investigated in the present study. The theoretical Young’s modulus and Poisson ratio of -LiAlO2 were firstly extracted from elastic constant for subsequent comparison with the experimentally measured data. The experimental micro-scaled mechanical properties were obtained by microcompression testing. The nano-scaled mechanical properties, such as Young’s modulus, hardness and yield stress, were measured by usi

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-Mao, Ho Chih, and 何志茂. "The Fabrication of Photonic Crystal based on Nano-Imprint Technology." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/90254897696443058630.

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碩士<br>華梵大學<br>機電工程學系博碩專班<br>99<br>Abstract Nanotechnology has become very popular in recent years. It influences not only on a single type of industry but wide range of applications. However the traditional semiconductor manufacturing processes involved in nanotechnology manufacturing technology encountered bottleneck due to the resolution limit of the photolithography and nanoimprint technology provides an good alternative which is suitable for manufacturing nano-level precision components. This paper mainly tries to establish the soft PDMS mold to the UV nanoimprint process to make photonic

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Chang, Chi-Peng, and 張志鵬. "Studies of liquid crystal Fresnel lenses doped with nano particles." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/77890551103566082335.

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碩士<br>國立中山大學<br>物理學系研究所<br>101<br>A simple method to make a controllable liquid crystal Fresnel lens with bistable state is proposed based on a surface of polymerization and the characteristic of nanoparticles. The sample is fabricated by a homogeneous aligned substrate and a vertical aligned one of coating polymer film. However, it has low diffraction efficiency. We improve the patterned electrode type with etching electrode structure. Experimental results reveal that liquid crystal Fresnel lens which ITO etching pattern using the nanoparticles doped with liquid crystals has bistable state an

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游信強. "Application of novel lithography and nano-crystal technique in the fabrication of nano-devices and memories." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/38469779404664908255.

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Ghosh, Sharmistha. "DIELECTRIC RELAXATION SPECTROSCOPY AND ELECTRO-OPTICAL STUDIES OF ANTIFERROELECTRIC AND FERROELECTRIC LIQUID CRYSTALS AND LIQUID CRYSTAL NANO-COMPOSITES." Thesis, 2019. http://hdl.handle.net/10821/8328.

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Blending nanomaterials with liquid crystal (LC) is considered to be a prospective method to enhance the electro-optical properties of the host. Threshold voltage, driving voltage, residual dc, response time and rotational viscosity etc. are found to decrease in nano doped LC system and in turn the anisotropic order of the liquid crystalline host imparts order in the nano-sized guest particles. Proper selection of size, shape and crystallographic phase of nanomaterial is important to achieve desired improvements of the host. This dissertation presents results of doping different type of nanomat

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Behra, Saraswati. "Design and fabrication of photonic and metamaterial micro/nano structures through phase engineered interference lithography for suitable applications." Thesis, 2018. http://localhost:8080/iit/handle/2074/7637.

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