Дисертації з теми "Void nucleation and growth"
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Thomson, Ronald D. "Ductile fracture by void nucleation, growth and coalescence." Thesis, University of Glasgow, 1985. http://theses.gla.ac.uk/6487/.
Повний текст джерелаMukherjee, Sunit. "Quantitative characterization of void nucleation and growth in HY-100 steels." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19574.
Повний текст джерелаMcDermott, Patrick M. "Development and implementation of a shell element with pressure variation through the thickness and void growth and nucleation effects." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA369167.
Повний текст джерела"September 1999". Thesis advisor(s): Young W. Kwon. Includes bibliographical references (p. 107-109). Also Available online.
Labidi, Sana. "Elaboration des nanoparticules d'oxyde de zirconium par voie sol-gel : mise en forme et application pour la synthèse de biodiesel." Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCD085/document.
Повний текст джерелаIn this work, we have realized novel nanoparticulate catalysts ZrO₂-SO₄²⁻ for biofuel production. We have studied nucleation-growth kinetics of zirconium-oxo-alkoxy (ZOA) nanoparticles in the sol-gel process. The monodispersed nanoparticles of 3.6 nm diameter were realised in a sol-gel reactor with rapid (turbulent) micro-mixing of liquid solutions containing ZNP and H₂O in 1-propanol at 20°C. The nanocoatings were realised of stable colloids of ZOA nanoparticles on silica beads along with common powders obtained after precipitation of unstable colloids. The acid ZrO₂-SO₄²⁻" catalysts were prepared after drying at 80°C, wet impregnation in 0.25 mol.L⁻¹ aqueous solution of sulfuric acid and subsequent thermal treatment between 500 and 700°C and studied with BET, DTA-DSC, TEM, DRIFT, elemental analysis, DRX and other methods. The catalyst nanocoatings calcinated at 580°C showed strong activity in esterification reaction of palmitic acid in methanol at 65°C, which is about 50 times higher than that of nanopowders, and also possesses the highest stability towards recycling. Tha catalytic performance of catalytic nanocoatings was also confirmed on unedible and waste oils
Chandler, Mei Qiang. "Multiscale modeling of hydrogen-enhanced void nucleation." Diss., Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-03192007-103416.
Повний текст джерелаLandron, Caroline. "Ductile damage characterization in Dual-Phase steels using X-ray tomography." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00738820.
Повний текст джерелаGautier, Maxime. "Etude de la formation de nanoparticules de carbone au cours de la décomposition thermique d'hydrocarbures : application à la coproduction de noir de carbone et d'hydrogène par craquage thermique du méthane par voie plasma." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEM061/document.
Повний текст джерелаThis thesis takes part of the development of a direct decarbonation process of methane by plasma to produce both carbon black and hydrogen. This process is particularly interesting in an electrical mix context with low carbon emission. It proffers a solution to reduce drastically CO2 emissions rejected by the current carbon black and hydrogen ways of production, which are ones of the most polluting industrial processes.This study aims to develop reliable and robust numerical methods for a better understanding and a greater control of the morphologic features of the carbon black generated. These features play a key role in the quality and applications of the carbon black produced. This research retraces the evolution of the carbon structure from the molecules of the fuel to the formation of nanoparticles and solid microstructures. It tackles different phenomenon such as: nucleation, chemical growth, coagulation, maturity and aggregation.Numerical tools and methods were developed thereby and enable to simulate carbon particle formation. They were successfully implemented in a commercial CFD software. Eventually numerical simulation of the plasma process were performed, integrating heat transfers and turbulence
Shabrov, Maxim N. "Micromechanical modeling of void nucleation in two phase materials /." View online version; access limited to Brown University users, 2005. http://wwwlib.umi.com/dissertations/fullcit/3174672.
Повний текст джерелаLieberman, Evan. "Simulation of Void Nucleation in Single-Phase Copper Polycrystals." Research Showcase @ CMU, 2016. http://repository.cmu.edu/dissertations/707.
Повний текст джерелаWarren, Dale Ross Seinfeld John H. "Nucleation and growth of aerosols /." Diss., Pasadena, Calif. : California Institute of Technology, 1986. http://resolver.caltech.edu/CaltechETD:etd-03212008-085926.
Повний текст джерелаGreen, David John. "Controls on concretion nucleation and growth." Thesis, University of Exeter, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426140.
Повний текст джерелаCooper, Sharon. "Nucleation beneath monolayer films." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238881.
Повний текст джерелаUwaha, Makio, and Katsunobu Koyama. "Transition from nucleation to ripening in the classical nucleation model." Elsevier, 2010. http://hdl.handle.net/2237/13867.
Повний текст джерелаPushkareva, Marina. "Study of Void Growth in Commercially Pure Titanium." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/35667.
Повний текст джерелаStieß, Michael. "Studies on microtubule nucleation during axon growth." Diss., lmu, 2010. http://nbn-resolving.de/urn:nbn:de:bvb:19-123575.
Повний текст джерелаMonette, Liza. "Numerical simulations of nucleation and growth phenomena." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64053.
Повний текст джерелаO'Neill, K. P. "Island nucleation and growth during submonolayer deposition." Thesis, University of Strathclyde, 2012. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=18117.
Повний текст джерелаNazarov, Andrei V., Alexander A. Mikheev, Irina V. Valikova, Aung Moe, and Alexander G. Zaluzhnyi. "Kinetic of void growth in fcc and bcc metals." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-193483.
Повний текст джерелаNazarov, Andrei V., Alexander A. Mikheev, Irina V. Valikova, Aung Moe, and Alexander G. Zaluzhnyi. "Kinetic of void growth in fcc and bcc metals." Diffusion fundamentals 6 (2007) 28, S. 1-2, 2007. https://ul.qucosa.de/id/qucosa%3A14203.
Повний текст джерелаSrivastava, Ankit. "Void Growth and Collapse in a Creeping Single Crystal." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc84281/.
Повний текст джерелаInnocenti, Malini Riccardo. "Simulation of the nucleation and growth of biominerals." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13253/.
Повний текст джерелаO'Reilly, Keyna A. Q. "The nucleation and growth of transition metal aluminides." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306035.
Повний текст джерелаHaezebrouck, Dennis Michael. "Nucleation and growth of a single martensitic particle." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14839.
Повний текст джерелаLiashenko, O., and A. Gusak. "Heterogeneous nucleation and depletion effect in nanowire growth." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20626.
Повний текст джерелаMozaffari, Saeed. "Modeling the Nucleation and Growth of Colloidal Nanoparticles." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/104448.
Повний текст джерелаDoctor of Philosophy
The synthesis of colloidal metal nanoparticles with superior control over size and size distribution, and has attracted much attention given the wide applications of these nanomaterials in the fields of catalysis, photonics, and electronics. Obtaining nanoparticles with desired sizes and polydispersity is vital for enhancing the consistency and performance for specific applications (e.g., catalytic converters for automotive emission). Ligands are often employed to prevent agglomeration and also control the nanoparticle size and size distribution. Ligands can affect the precursor reactivity and therefore the reduction/nucleation by binding with the metal precursor. Nucleation refers to the assimilation of few atoms to form initial nuclei acting as templates for nanoparticle growth. Additionally, ligands can bind with the nanoparticle surface sites and change the rate of surface growth and therefore the final nanoparticle size. Despite strong effects of ligands in the colloidal nanoparticle synthesis, their exact role in the nucleation and growth kinetics is yet to be identified. Additionally, nucleation and growth models capable of unraveling the underlying mechanisms of nucleation and growth in the presence of ligands are still lacking in the literature. Therefore, obtaining nanoparticles with desired sizes and polydispersity mostly relies on trial-and-error approach making the synthesis costly and inefficient. As such, developing models capable of predicting suitable synthesis conditions is contingent upon understanding the chemistry and mechanism involved during nanoparticles formation. Therefore, in this study, novel kinetic models were developed to capture the nucleation and growth kinetics of colloidal metal nanoparticles under different synthetic conditions (different types of solvents, different concentrations of ligand and metal). In-situ SAXS was further employed to measure the average diameter, concentration of nanoparticles, and polydispersity during the synthesis and extract the nucleation and growth rates (evolution of concentration of nanoparticles and size). First, an average-property model was developed to account for ligand-metal bindings and capture the size and concentration of nanoparticles during the synthesis. Then, a more complex modeling approach; PBM, accompanied by the thermodynamic calculations of surface growth and ligand-nanoparticle binding enthalpies was implemented to capture the size distribution. As it will be shown later, the determination of the underlying mechanisms resulted in a highly predictive kinetic model capable of predicting the synthetic conditions to obtain nanoparticles with desired sizes. The proposed methodology can serve as a powerful tool to synthesize nanoparticles with specific sizes and polydispersity.
Knelangen, Matthias. "Nucleation and growth of group III-nitride nanowires." Doctoral thesis, Humboldt-Universität zu Berlin, 2013. http://dx.doi.org/10.18452/16855.
Повний текст джерелаThis work covers the MBE growth and characterization of group III-nitride nanostructures. The work begins with the catalyst-free growth of GaN nanowires (NWs) on Si(111) by plasma-assisted MBE. The importance of substrate preparation and the formation of an amorphous SiN interlayer are described. GaN NWs are shown to nucleate as spherical islands and to furhter undergo a shape transition towards the NW geometry. The amorphous interlayer leads to a loss in epitaxial alignment and thus to NW tilt and coalescence. Coalescence leads to the formation of dislocations and stacking faults (SFs) in the NWs which greatly affect their optical properties. Dislocations are shown to have a detrimental effect on the optical quality, whereas SFs are shown to have a characteristic emission wavelength. Epitaxial growth of GaN on Si(111) can be achieved by using an AlN buffer layer. The nucleation and growth GaN NWs on AlN-buffered Si(111) is shown to happen via the pseudomorphical nucleation of spherical islands. As these islands grow, they undergo several characteristical shape changes, with the formation of facets in order to elastically relieve the lattice-mismatch induced strain. At a critical island size (and thus strain level), plastic relaxation happens by the formation of a misfit dislocation at the AlN/GaN interface. A subsequent transition to the NW geometry is observed, driven by the anisotropy of surface energies. The third part of this work covers the growth of (In,Ga)N/GaN NW heterostructures. GaN NWs with two stacked (In,Ga)N insertions are grown by MBE. The chemical composition is assessed by combining synchrotron-based HRXRD and a geometrical phase analysis of HRTEM micrographs. The structural analysis reveals that the (In,Ga)N insertions are embedded in the GaN matrix and that no plastic relaxation happens. The In content is shown to vary within a single insertion: The top region is more In rich due to In segretation during growth.
JAYASEELAN, VIDHYA SAGAR. "Diamond Heteroepitaxy by Bias Enhanced Nucleation." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1202537092.
Повний текст джерелаChan, Chit-yiu. "Nucleation and growth of cubic boron nitride thin films /." access full-text access abstract and table of contents, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-ap-b19887693a.pdf.
Повний текст джерела"Submitted to Department of Physics and Materials Science in partial fulfillment of the requirements for the degree of Doctor of Philosophy" Includes bibliographical references (leaves 147-154)
Schöll, Jochen. "Nucleation, growth, and solid phase transformations during precipitation processes /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16779.
Повний текст джерелаRunevall, Odd. "Helium Filled Bubbles in Solids : Nucleation, Growth and Swelling." Doctoral thesis, KTH, Reaktorfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-90960.
Повний текст джерелаHawtin, Robert William. "Molecular Simulation of Clathrate Hydrate Nucleation, Growth and Inhibition." Thesis, University of Warwick, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487912.
Повний текст джерелаFontenot, Kevin. "Nucleation and growth in mini/macro emulsion polymerization systems." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/10922.
Повний текст джерелаHassan, S. A. "Particle nucleation and growth in emulsion polymerisation of styrene." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377034.
Повний текст джерелаWhitfield, Michael David. "Nucleation, growth and acoustic properties of thin film diamond." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368194.
Повний текст джерелаGomez, Said Hamad. "Computational study of the nucleation and growth of ZnS." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1445565/.
Повний текст джерелаNitsche, Heiko. "Kinetics of crystallization in amorphous alloys nucleation and growth /." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11947826.
Повний текст джерелаLee, Sangil. "Fundamental study of underfill void formation in flip chip assembly." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29755.
Повний текст джерелаCommittee Chair: Baldwin, Daniel; Committee Member: Colton, Jonathan; Committee Member: Ghiaasiaan, Mostafa; Committee Member: Moon, Jack; Committee Member: Tummala, Rao. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Park, Yensil. "Heterogeneous Nucleation in a Supersonic Nozzle." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1545323828317256.
Повний текст джерелаBiyikli, Kasim. "Nucleation and growth of crystals of pharmaceuticals on functionalized surfaces." Worcester, Mass. : Worcester Polytechnic Institute, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-020606-165721/.
Повний текст джерелаPang, Ka-yan. "Nucleation and growth of GaN islands by molecular-beam epitaxy." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B36776543.
Повний текст джерелаStinson, O'Gorman Dean Edward. "Theory and large-scale numerical simulations of nucleation and growth." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29792.pdf.
Повний текст джерелаMori, Brian Katsuo. "Studies of bubble growth and departure from artificial nucleation sites." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0009/NQ35258.pdf.
Повний текст джерелаLi, Qinghua. "Colloidal zeolites : from nucleation to zoned films by seeded growth /." Luleå, 2002. http://epubl.luth.se/1402-1544/2002/04/index.html.
Повний текст джерелаHounslow, Michael John. "A discretized population balance for simultaneous nucleation, growth and aggregation /." Title page, summary and table of contents only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phh839.pdf.
Повний текст джерелаShin, Jong Ho. "Role of nucleation and growth in two-phase microstructure formation." [Ames, Iowa : Iowa State University], 2007.
Знайти повний текст джерелаStinson, O'Gorman Dean. "Theory and large-scale numerical simulations of nucleation and growth." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27417.
Повний текст джерелаPang, Ka-yan, and 彭嘉欣. "Nucleation and growth of GaN islands by molecular-beam epitaxy." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B36776543.
Повний текст джерелаVan, Dyke Alexander Scott. "Frost nucleation and growth on hydrophilic, hydrophobic, and biphilic surfaces." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19105.
Повний текст джерелаDepartment of Mechanical and Nuclear Engineering
Amy R. Betz
The purpose of this research was to test if biphilic surfaces mitigate frost and ice formation. Frost, which forms when humid air comes into contact with a surface that is below the dew point and freezing temperature of water, hinders engineering systems such as aeronautics, refrigeration systems, and wind turbines. Most previous research has investigated increasingly superhydrophobic materials to delay frost formation; however, these materials are dependent on fluctuating operating conditions and surface roughness. Therefore, the hypothesis for this research was that a biphilic surface would slow the frost formation process and create a less dense frost layer, and water vapor would preferentially condense on hydrophilic areas, thus controlling where nucleation initially occurs. Preferential nucleation can control the size, shape, and location of frost nucleation. To fabricate biphilic surfaces, a hydrophobic material was coated on a silicon wafer, and a pattern of hydrophobic material was removed using photolithography to reveal hydrophilic silicon-oxide. Circles were patterned at various pitches and diameters. The heat sink was comprised of two parts: a solid bottom half and a finned upper half. Half of the heat sink was placed inside a polyethylene base for insulation. Tests were conducted in quiescent air at room temperature, 22 °C, and two relative humidities, 30% and 60%. Substrate temperatures were held constant throughout all tests. All tests showed a trend that biphilic surfaces suppress freezing temperature more effectively than plain hydrophilic or hydrophobic surfaces; however, no difference between pattern orientation or size was noticed for maximum freezing temperature. However, the biphilic patterns did affect other aspects such as time to freezing and volume of water on the surface. These effects are from the patterns altering the nucleation and coalescence behavior of condensation.
Canestrari, Nicolò. "Nucleation and growth of iron nanoparticles by gas phase condensation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24849/.
Повний текст джерелаOcansey, Paul Morgan-Narteh. "Nucleation and early growth during solidification of aluminum-copper alloys." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187082.
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