Dissertations / Theses on the topic 'Phase transition'
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Klintberg, Lena. "Miniature phase-transition actuators/." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2002. http://publications.uu.se/theses/91-554-5345-7/.
Full textMartin, Adrian Peter. "Cosmological phase transition phenomena." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389880.
Full textHaupt, Kerstin Anna. "Phase transitions in transition metal dichalcogenides studied by femtosecond electron diffraction." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85608.
Full textENGLISH ABSTRACT: Low-dimensional materials are known to undergo phase transitions to differently or- dered states, when cooled to lower temperatures. These phases often show a periodic modulation of the charge density (called a charge density wave – CDW) coupled with a periodic perturbation of the crystal lattice (called a periodic lattice distortion – PLD). Although many experiments have been performed and much has been learnt about CDW phases in low-dimensional materials, the reasons for their existence are still not fully understood yet. Many processes, involving either strong electron–electron or electron–lattice coupling, have been observed which all might play a role in explaining the formation of different phases under different conditions. With the availability of femtosecond lasers it has become possible to study materials under highly nonequilibrium conditions. By suddenly introducing a known amount of energy into the system, the equilibrium state is disturbed and the subsequent relax- ation processes are then observed on timescales of structural and electronic responses. These experiments can deliver valuable information about the complex interactions between the different constituents of condensed matter, which would be inaccessible under equilibrium conditions. We use time resolved electron diffraction to investigate the behaviour of a CDW system perturbed by a short laser pulse. From the observed changes in the diffraction patterns we can directly deduce changes in the lattice structure of our sample. A femtosecond electron diffraction setup was developed at the Laser Research In- stitute in Stellenbosch, South Africa. Short laser pulses produce photo electrons which are accelerated to an energy of 30 keV. Despite space charge broadening effects, elec- tron pulses shorter than 500 fs at sample position can be achieved. Technical details of this system and its characterisation as well as sample preparation techniques and analysis methods are described in detail in this work. Measurements on two members of the quasi-two-dimensional transition metal di- chalcogenides, namely 4Hb-TaSe2 and 1T-TaS2, are shown and discussed. Both show fast (subpicosecond) changes due to the suppression of the PLD and a rapid heating of the lattice. When the induced temperature rise heats the sample above a phase tran- sition temperature, a complete transformation into the new phase was observed. For 4Hb-TaSe2 we found that the recovery to the original state is significantly slower if the PLD was completely suppressed compared to only disturbing it. On 1T-TaS2 we could not only study the suppression of the original phase but also the formation of the higher energetic CDW phase. Long (100 ps) time constants were found for the tran- sition between the two phases. These suggest the presence of an energy barrier which has to be overcome in order to change the CDW phase. Pinning of the CDW by de- fects in the crystal structure result in such an energy barrier and consequently lead to a phase of domain growth which is considerably slower than pure electron or lattice dynamics.
AFRIKAANSE OPSOMMING: Dit is bekend dat lae-dimensionele materie fase oorgange ondergaan na anders ge- ori¨enteerde toestande wanneer afgekoel word tot laer temperature. Hierdie fases toon dikwels ’n periodiese modulasie van die elektron digtheid (genoem ’n “charge density wave” – CDW), tesame met ’n periodiese effek op die kristalrooster (genoem ’n “peri- odic lattice distortion” – PLD). Alhoewel baie eksperimente al uitgevoer is en al baie geleer is oor hierdie CDW fase, is die redes vir hul bestaan nog steeds nie ten volle verstaan nie. Baie prosesse, wat of sterk elektron–elektron of elektron–fonon interaksie toon, is al waargeneem en kan ’n rol speel in die verduideliking van die vorming van die verskillende fases onder verskillende omstandighede. Met die beskikbaarheid van femtosekonde lasers is dit nou moontlik om materie onder hoogs nie-ewewig voorwaardes te bestudeer. Deur skielik ’n bekende hoeveel- heid energie in die stelsel in te voer, word die ewewigstaat versteur en word die daar- opvolgende ontspanning prosesse waargeneem op die tydskaal van atomies struktu- rele en elektroniese bewiging. Hierdie eksperimente kan waardevolle inligting lewer oor die komplekse interaksies tussen die verskillende atomiese komponente van ge- kondenseerde materie, wat ontoeganklik sou wees onder ewewig voorwaardes. Ons gebruik elektrondiffraksie met tyd resolusie van onder ’n pikosekonde om die gedrag van ’n CDW stelsel te ondersoek nadat dit versteur is deur ’n kort laser puls. Van die waargenome veranderinge in die diffraksie patrone kan ons direk aflei watse veranderinge die kristalstruktuur van ons monster ondergaan. ’n Femtosekonde elektronendiffraksie opstelling is ontwikkel by die Lasernavors- ingsinstituut in Stellenbosch, Suid-Afrika. Kort laser pulse produseer foto-elektrone wat dan na ’n energie van 30 keV versnel word. Ten spyte van Coulomb afstoting ef- fekte, kan elektron pulse korter as 500 fs by die monster posisie bereik word. Tegniese besonderhede van hierdie opstelling, tegnieke van die voorbereiding van monsters asook analise metodes word volledig in hierdie tesis beskryf. Metings op twee voorbeelde van kwasi-tweedimensionele semi-metale, naamlik 4Hb-TaSe2 en 1T-TaS2, word gewys en bespreek. Beide wys ’n vinnige (subpikosekon- de) verandering as gevolg van die versteuring van die PLD en ’n vinnige verhitting van die kristalrooster. Wanneer die ge¨ınduseerde temperatuur bo die fase oorgang tempe- ratuur styg, is ’n volledige transformasie na die nuwe fase waargeneem. Vir 4Hb-TaSe2 het ons gevind dat die herstelling na die oorspronklike toestand aansienlik stadiger is as die PLD heeltemal viernietig is in vergelyking met as die PLD net versteur is. Met 1T-TaS2 kon ons nie net alleenlik die vernietiging van die oorspronklike fase sien nie, maar ook die vorming van ’n ho¨er energie CDW fase. Lang (100 ps) tydkonstante is gevind vir die oorgang tussen die twee fases. Hierdie dui op die teenwoordigheid van ’n energie-versperring wat eers oorkom moet word om die CDW fase voledig te ver- ander. Vaspenning van die CDW deur defekte in die kristalstruktuur veroorsaak so’n energie versperring en gevolglik lei dit tot ’n fase van groeiende CDW gebiede wat heelwat stadiger as pure elektron of kritalrooster dinamika is.
Qasim, Ilyas. "Structural and Electronic Phase Transitions in Mixed Transition Metal Perovskite Oxides." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/10029.
Full textDogbevia, Moses K. "Gas phase transition metal-cluster catalysis /." abstract and full text PDF (free order & download UNR users only), 2005. http://0-wwwlib.umi.com.innopac.library.unr.edu/dissertations/fullcit/3209128.
Full text"August, 2005." Includes bibliographical references. Online version available on the World Wide Web. Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2005]. 1 microfilm reel ; 35 mm.
Sopena, Miguel. "Hydrodynamics of the electroweak phase transition." Thesis, University of Sussex, 2013. http://sro.sussex.ac.uk/id/eprint/45752/.
Full textWang, Changnan. "Gel phase transition and molecular recognition." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43921.
Full textFurukawa, Akira. "Phase Transition Dynamics of Complex Fluids." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/147797.
Full textThein, Ferdinand [Verfasser]. "Results for two phase flows with phase transition / Ferdinand Thein." Magdeburg : Universitätsbibliothek, 2018. http://d-nb.info/1165650487/34.
Full textArrachid, Abdessamad. "The phase transition analyzer : a tool to measure thermal transitions of biopolymers?" Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435986.
Full textEaglesham, D. J. "Charge density waves and their phase transitions in the transition metal chalcogenides." Thesis, University of Bristol, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375017.
Full textThompson, Ian. "Dynamic phase transitions in biased ensembles of particle systems with repulsive interactions." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.665407.
Full textPonton, Alain. "Transition phase micellaire, phase éponge induite par laser dans une microémulsion." Bordeaux 1, 1989. http://www.theses.fr/1989BOR10549.
Full textLavrskyi, Mykola. "Modélisation en fonctionnelle de la densité atomique des transformations de phases dans le système Fe-C à basse température." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMR003/document.
Full textThis thesis examines the formation of martensite in Fe-Ni-C steels and the diffusion of carbonatoms in this phase at low temperatures. To achieve this goal the atomistic modeling have beenused. To describe these phenomena two different approaches were developed: a discretemodel based on the Atomic Density Function (ADF) theory and the quasiparticle approachesbased on the Atomic Fraton Theory (AFT). First, the AFT was tested to model a self-assemblykinetics of initially disordered systems to three different classes of ordered one: singlecomponent crystals with fcc and diamond structures, two component crystals with zinc-blendstructure, and polymers with single-strand and double-stranded helixes structures. Then thisapproach was applied to model austenite/martensite transformation. It was shown thatmartensite nucleus grows as multivariant aggregate in austenite matrix. Using pole figures andsimulated diffraction patterns these variants were identified and compared with the experimentaldata. The carbon diffusion in martensite phase was studied using ADF theory. Two systemswith the different elastic properties corresponding to the Fe-C and Fe-Ni-C systems wereconsidered. It was shown that during a first stage of aging the carbon atoms undergo a spinodaldecomposition on the octahedral interstices of bcc lattice and form the carbon-rich zones. Then"tweed-like" morphology of carbon-rich zones is developed. The simulations results are a goodagreement with experimental images obtained by atom probe tomography. The relationbetween Zener ordering and the concentration of carbon reach zones is discussed
Du, Chengran. "Nonequilibrium phase transition in binary complex plasmas." Diss., lmu, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-152752.
Full textYamashita, Hiroki 1981. "Electroweak phase transition and singlet Majoron model." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101691.
Full textButcher, C. "Gas-phase transition metal carbonyl cluster chemistry." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597163.
Full textMoon, Chang Man. "Molecular dynamics study of phase transition phenomena." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/12675.
Full textBukharaev, A. A., N. I. Nurgazizov, D. A. Biziaev, A. P. Chuklanov, and T. F. Khanipov. "Current-induced Phase Transition in Ni Nanowires." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35343.
Full textBentley, Christopher David. "The phase transition of poly(N-isopropylacrylamide)." Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539714.
Full textMurray, Ryan. "Some Asymptotic Results For Phase Transition Models." Research Showcase @ CMU, 2016. http://repository.cmu.edu/dissertations/824.
Full textChoi, Man Yee. "Hygroscopicity and phase transition of atmospheric aerosols /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CENG%202004%20CHOI.
Full textGrant, Stuart Alexander. "Phase transition behaviour in constraint satisfaction problems." Thesis, University of Leeds, 1997. http://etheses.whiterose.ac.uk/1273/.
Full textSeto, Yusuke. "Composition, symmetry and phase transition of scapolite." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/145099.
Full text0048
新制・課程博士
博士(理学)
甲第11333号
理博第2891号
新制||理||1431(附属図書館)
22976
UT51-2005-D84
京都大学大学院理学研究科地球惑星科学専攻
(主査)助教授 下林 典正, 教授 北村 雅夫, 教授 嶋本 利彦
学位規則第4条第1項該当
Sarkar, Sudipta Kumar. "Phase transition in Binary Liquid Crystalline Mixtures." Thesis, University of North Bengal, 2017. http://hdl.handle.net/123456789/2674.
Full textWang, Fang. "Quantum phase transitions and fluctuations in space charge doped one unit-cell Bi2Sr2CaCu2O8+x." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS436.
Full textThe superconductor-insulator transition in two dimensions is a continuous quantum phase transition at absolute zero temperature driven by external parameters like disorder, magnetic field, or carrier concentration. Such transitions have been induced in a variety of two dimensional superconductors by tuning different external parameters and studied with a finite-size scaling analysis. There is however not much uniformity in the findings as both the superconducting systems and the tuning parameters are diverse. In this thesis, we first fabricated high quality of one unit-cell BSCCO-2212 samples with anodic bonding technique, an original method of exfoliation developed in our laboratory for preparing high quality 2D crystals from layered bulk materials. Then we revealed the superconductor-insulator transition in the fabricated one unit-cell Bi2.1Sr1.9CaCu2O8+x by space charge doping, which in an effective field effect electrostatic doping technique. We determined the related critical parameters and develop a reliable way to estimate doping in the non-superconducting region, a crucial and central problem in these materials. Finite-size scaling analysis yields a critical doping of 0.057 holes/Cu, a critical resistance of ~ 6.85 kΩ and a scaling exponent product νz ~ 1.57. These results, together with earlier work in other materials, provide a coherent picture of the superconductor-insulator transition and its bosonic nature in the underdoped regime of emerging superconductivity in high critical temperature superconductors. Then in the latter part of this thesis, we also investigated the effects of inhomogeneity and fluctuations on superconducting transition on mesoscopic and nanoscopic scale both with simulation and with simulations and with analysis of transport measurements. The use of an ultra-thin sample also facilitates analysis on two fronts. Firstly, in two dimensions fluctuation phenomena related to the superconducting transition are exacerbated, making the analysis of changes in widths easier. Secondly aspects related to percolation and clustering can be easily simulated and compared with analytical models. Especially, the effects of fluctuations on the overdoped and underdoped side of the phase diagram of one unit-cell BSCCO-2212 are discussed. We discovered that the fluctuation regime in the underdoped part of the phase diagram is fundamentally different from that in the part where p > 0.19. We discussed the possible behaviour of cooper pairs related to our experimental results, as well as one existing theoretical explanation (BEC-BCStransition)
Mitra, Sunanda. "Chalcogenide of type I-V-VI₂ for thermoelectric applications." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS562/document.
Full textHere, we report on a series of samples with nominal compositions AgBiSe2-xSx (with x= 0 to 2) belonging to the class of ternary chalcogenides of type I-V-VI₂. The structural and thermal analysis result shows a complete solid solution without miscibility gap and phase transitions for all compositions. We have succeeded in obtaining single phase compounds, of both hexagonal and cubic phase, and the high temperature XRD study showed the rhombohedral phase too for selected compositions (x=1 to 2 in AgBiSexS2-x). The DSC results confirmed the presence of the phase transitions for all compositions, with a shift of the temperature of transition as a function of the sulfur/selenium fraction. The high pressure XRD investigation of the compound AgBiSe₂ showed a pressure induced phase transition from hexagonal-to-rhombohedral-to-cubic phase. In this respect, chemical pressure with 30% Sb on the Bi site has been successfully applied to stabilize the cubic phase for all compositions. Nb doping in the Sb-substituted samples does not show any change in the phase behavior at RT in comparison with the undoped samples. The influence of doping on transport properties was analyzed. The negative value of S for all compositions indicates n-type semiconducting behavior over the range (50-300K). Further, the results not only shows very low value of κ but the ∣S∣ and ρ value also decreases for each composition from Nb fraction 0.02 to 0.04. This gives us the opportunity to optimize the power factor in order to improve the ZT value. At last, collaborative study with Chinese team showed that ZT of 1.3 at 890 K can be achieved for AgPbmSnSe2+m (m = 50)
Weber, Tobias [Verfasser]. "Dynamics at the Orbital Ordering Phase Transition in MgV2O4 and at the Ferromagnetic Phase Transition in MnSi / Tobias Weber." München : Verlag Dr. Hut, 2017. http://d-nb.info/1135596522/34.
Full textEndo, Tomoki. "Hadron-quark matter phase transition and the mixed phase in hybrid stars." 京都大学 (Kyoto University), 2006. http://hdl.handle.net/2433/144167.
Full text0048
新制・課程博士
博士(理学)
甲第12084号
理博第2978号
新制||理||1444(附属図書館)
23920
UT51-2006-J79
京都大学大学院理学研究科物理学・宇宙物理学専攻
(主査)助教授 菅沼 秀夫, 教授 中村 卓史, 教授 畑 浩之
学位規則第4条第1項該当
Mouri, Abdelkader. "Optimisation, caractérisation et comportement physico-chimique dans les milieux modèles de nano-objets en phase inverse." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT207.
Full textThis thesis project, carried out in collaboration with Medesis Pharma laboratory, is about the development of two pharmaceutical formulations, a reverse microemulsion and a colloidal gel, based on Pécéol®, lécithine, ethanol and water. The indicated lithium in the treatment of neurodegenerative diseases has been used as a hydrophilic principal active model for this project. This work started with the study of the phase behavior of the four component system Pécéol®/lecithin/éthanol/water, focusing primarily on the various parameters involved in phase transitions in order to determine the role of Pécéol® and lecithin in the structuring of the system.- The study of the structural properties of the reverse microemulsion, in the Pécéol® rich domain, showed that the system structure is not coherent with a classical model of spherical micelles, a hypothesis of a local lamellar structure was proposed. The solubilization properties of the microemulsion were evaluated following the development of a series of pseudo-ternary phase diagrams, by varying the ethanol/lecithin ratio. Optimal efficiency was obtained for an ethanol/lecithin ratio of 40/60. The optimized formulation is capable of effectively incorporating lithium (Li) to acceptable concentrations without altering the stability of the system. The study of the incorporation properties of Li in the microemulsion has shown that the encapsulation mechanism is compatible with drug-surfactant binding model. The results of the stability studies of the free and Li loaded microemulsion, conducted according to ICH conditions, are satisfactory.- The gel structuring was followed, in the lecithin rich domain, through rheological and optical microscopy analyses, according to lecithin/Pécéol® ratio. Results showed that the rheological properties of the gel can be modified by adjusting the lecithin/Pécéol® ratio. Moreover, the characterization of the gel structure through Small Angle X-Ray Scattering (SAXS) and Freeze Fracture-Transmission Electron Microscopy (FF-TEM) showed an inverse hexagonal phase H2. While, in the water rich region, an inverse hexagonal H2 and lamellar Lα phases were identified. The adjustable rheological properties of the clear gel, and its great water solubilisation capacity, are particularly interesting for the application of the gel in pharmaceutical and/or cosmetic fields
Mouri, Abdelkader. "Optimisation, caractérisation et comportement physico-chimique dans les milieux modèles de nano-objets en phase inverse." Electronic Thesis or Diss., Montpellier, 2016. http://www.theses.fr/2016MONTT207.
Full textThis thesis project, carried out in collaboration with Medesis Pharma laboratory, is about the development of two pharmaceutical formulations, a reverse microemulsion and a colloidal gel, based on Pécéol®, lécithine, ethanol and water. The indicated lithium in the treatment of neurodegenerative diseases has been used as a hydrophilic principal active model for this project. This work started with the study of the phase behavior of the four component system Pécéol®/lecithin/éthanol/water, focusing primarily on the various parameters involved in phase transitions in order to determine the role of Pécéol® and lecithin in the structuring of the system.- The study of the structural properties of the reverse microemulsion, in the Pécéol® rich domain, showed that the system structure is not coherent with a classical model of spherical micelles, a hypothesis of a local lamellar structure was proposed. The solubilization properties of the microemulsion were evaluated following the development of a series of pseudo-ternary phase diagrams, by varying the ethanol/lecithin ratio. Optimal efficiency was obtained for an ethanol/lecithin ratio of 40/60. The optimized formulation is capable of effectively incorporating lithium (Li) to acceptable concentrations without altering the stability of the system. The study of the incorporation properties of Li in the microemulsion has shown that the encapsulation mechanism is compatible with drug-surfactant binding model. The results of the stability studies of the free and Li loaded microemulsion, conducted according to ICH conditions, are satisfactory.- The gel structuring was followed, in the lecithin rich domain, through rheological and optical microscopy analyses, according to lecithin/Pécéol® ratio. Results showed that the rheological properties of the gel can be modified by adjusting the lecithin/Pécéol® ratio. Moreover, the characterization of the gel structure through Small Angle X-Ray Scattering (SAXS) and Freeze Fracture-Transmission Electron Microscopy (FF-TEM) showed an inverse hexagonal phase H2. While, in the water rich region, an inverse hexagonal H2 and lamellar Lα phases were identified. The adjustable rheological properties of the clear gel, and its great water solubilisation capacity, are particularly interesting for the application of the gel in pharmaceutical and/or cosmetic fields
Impéror-Clerc, Marianne. "Étude de transition de phase vers les phases cubiques des systèmes eau/surfactant." Paris 11, 1992. https://tel.archives-ouvertes.fr/tel-01989797.
Full textChu, Fan. "The ferroelectric phase transition in complex perovskite relaxors /." [S.l.] : [s.n.], 1994. http://library.epfl.ch/theses/?nr=1248.
Full textTakahashi, Katsunori. "SWELLING AND VOLUME PHASE TRANSITION OF POLYMER GELS." 京都大学 (Kyoto University), 2001. http://hdl.handle.net/2433/150686.
Full textKamikado, Kazuhiko. "Chiral phase transition in QCD with critical fluctuation." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/175113.
Full textFalicki, Slawomir. "Two-phase system and transition metal catalyzed reactions." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5663.
Full textWehbe, Charbel. "Étude asymptotique de modèles en transition de phase." Thesis, Poitiers, 2014. http://www.theses.fr/2014POIT2311/document.
Full textThis thesis report is devoted to the study of Caginalp type phase-field Models. Here, we consider two parts : the first is a generalization of the Caginalp type phase-field model based on a generalization of the Maxwell-Cattaneo law and the second with the same model in its conservative version. The study in the two parts is made in a bounded domain. In addition, in the first part we distinguish cases of boundary conditions of Dirichlet and Neumann, while in the second part the model is studied only with Dirichlet conditions (with a regular potential and a singular potential). First, the existence, uniqueness, and regularity of solutions are analyzed by means of classical arguments. Then, the existence of bounded absorbing sets is established. Finally, in some cases, the existence of the global attractor and exponential attractors are analyzed
Wincure, Benjamin 1966. "Computational modeling of a liquid crystal phase transition." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103308.
Full textSwainson, Ian Peter. "The phase transition and dynamic disorder in cristobalite." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281903.
Full textStorey, Marianne. "Effect of disorder on the melting phase transition." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322000.
Full text甄冠僑 and Koon-kiu Yan. "Phase transition of certain iterative cellular automation models." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B42575382.
Full textBenson, Kevin E. C. "Aspects of the electroweak phase transition and baryogenesis." Thesis, University of Oxford, 1993. http://ora.ox.ac.uk/objects/uuid:27c64513-bbb7-4f94-b385-4e691354a7b5.
Full textGoudochnikov, Pavel. "The cubic phase transition in 2:4 perovskites." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417767.
Full textDaniels, Christopher. "On the phase transition in certain percolation models." Thesis, University of Bath, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687311.
Full textYu, Xiaohong. "Polymer interactions and the phase transition of gels." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12451.
Full textDunlap, Terrence L. "Nanoscale near-field imaging of VO2 phase transition." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1600042.
Full textA large focus of this thesis was developing the experimental procedures involved in imaging VO2 during the heating process. In order to study light interactions between an induced dipole and a sample surface to collect various data on its topography, amplitude and phase. Data is collected using a near-eld microscope (s-SNOM) and analyzed using various software that, normalize, lter and display the data in false color image. Specically, research behind this thesis, focuses on the phase transition of Vanadium Dioxide (VO2) as it goes from an insulating to fully metallic phase. Using a wavelength of λ = 10:7μm to image the resonant behavior of the sample, the nucleation of VO2 was imaged as the temperature increased.
MANDLER, JACQUES. "Sur la transition de phase de 3-sat." Paris 6, 2000. http://www.theses.fr/2000PA066530.
Full textВозний, Андрій Андрійович, Андрей Андреевич Возный, Andrii Andriiovych Voznyi, Володимир Володимирович Косяк, Владимир Владимирович Косяк, and Volodymyr Volodymyrovych Kosiak. "Thermally induced phase transition in SnxSy thin films." Thesis, E-MRS (European Materials Research Society), 2016. http://essuir.sumdu.edu.ua/handle/123456789/46278.
Full textDuflot-Flandrois, Véronique. "Signaux de transition de phase des systèmes finis." Caen, 2001. http://www.theses.fr/2001CAEN2069.
Full textYan, Koon-kiu. "Phase transition of certain iterative cellular automation models." Click to view the E-thesis via HKUTO, 1999. http://sunzi.lib.hku.hk/hkuto/record/B42575382.
Full text