Дисертації з теми "Nucleation and Crystal Growth"
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Biyikli, 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 джерелаPatchigolla, Kumar. "Particle process measurements : shape and size with crystal growth and nucleation kinetics." Thesis, Heriot-Watt University, 2007. http://hdl.handle.net/10399/2088.
Повний текст джерелаXu, Bao Jiang. "Nucleation and growth of 55% Al-Zn alloy on steel substrate." Faculty of Engineering, 2005. http://ro.uow.edu.au/theses/72.
Повний текст джерелаUwaha, Makio. "The Classical Nucleation Model : Entire Process of Crystal Growth and Application to Chirality Conversion." AIP, 2010. http://hdl.handle.net/2237/20569.
Повний текст джерелаKatsuno, Hiroyasu, Hideaki Uemura, Makio Uwaha, and Yukio Saito. "Growth modes in two-dimensional heteroepitaxy on an elastic substrate." Elsevier, 2005. http://hdl.handle.net/2237/7317.
Повний текст джерелаBack, Kevin. "The crystallisation of conformationally flexible molecules." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/the-crystallisation-of-conformationally-flexible-molecules(e00131ab-f91f-4bc9-902b-421e4d70fd74).html.
Повний текст джерелаSullivan, Rachel. "Molecules, clusters and crystals : the crystallisation of p-aminobenzoic acid from solution." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/molecules-clusters-and-crystals-the-crystallisation-of-paminobenzoic-acid-from-solution(ec826e71-782f-4bb0-9dc2-48cf94a7c941).html.
Повний текст джерелаGaines, Etienne. "The nucleation and growth of meta-aminobenzoic acid : a density functional theory and molecular dynamics study." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/54056.
Повний текст джерелаHutchinson, Adrian Paul. "The effect of additives on the growth of benzophenone." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/the-effect-of-additives-on-the-growth-of-benzophenone(41b9d82d-644d-4e19-9035-8b6b239d1842).html.
Повний текст джерелаCarr, Matthew William. "A study of the kinetics of nucleation, growth and detachment of carbon dioxide and chlorine bubbles using pressure release nucleation and the quartz crystal microbalance." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335381.
Повний текст джерелаDennis, Shelli R. "Nucleation and growth of inorganic crystals at the organic-inorganic interface /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/8050.
Повний текст джерелаJiang, Haiyang. "Molecular-scale effects of additives on the nucleation, growth and crystal properties of long-chain alkyl methyl-esters." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598018.
Повний текст джерелаStorey, Richard Anthony. "The nucleation, growth and solid state properties of particulate pharmaceuticals : studies of the molecular clustering, nucleation and crystal growth of ibuprofen and the role of the crystallisation environment ... mechanical properties of particles." Thesis, University of Bradford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734450.
Повний текст джерелаNwanosike, Quinta M. "Effect of divalent cations and solubilizers in apoferritin and gamma D-crystallin solutions nucleation, crystallization and light scattering studies /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31736.
Повний текст джерелаCommittee Chair: Ronald Rousseau; Committee Co-Chair: Athanassios Sambanis; Committee Member: Amyn Teja; Committee Member: Athanasios Nenes; Committee Member: Ingeborg Schmidt-Krey. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Li, Huayu. "Process measurements and kinetics of unseeded batch cooling crystallization." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53503.
Повний текст джерелаEuhus, Daniel D. "Nucleation in bulk solutions and crystal growth on heat-transfer surfaces during evaporative crystallization of salts composed of NaCO and NaSO." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5401.
Повний текст джерелаFernando, Joseph F. S. "Crystal seeding and photochemistry of gold-zinc oxide hybrid nanoparticles." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/101206/1/Joseph_Fernando_Thesis.pdf.
Повний текст джерелаNguyen, Thai Thu Hien. "Influence of crystallisation environment on the nucleation and growth of single crystals of (RS)-ibuprofen." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/5771/.
Повний текст джерелаEuhus, Daniel D. "Nucleation in bulk solutions and crystal growth on heat-transfer surfaces during evaporative crystallization of salts composed of Na₂CO₃ and Na₂SO₄." Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180136/unrestricted/euhus%5Fdaniel%5Fd%5F200312%5Fphd.pdf.
Повний текст джерелаMuterspaw, Taylor M. "The Formation of Prenucleation Clusters for Calcium Fluoride." Wright State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wright1630356298649522.
Повний текст джерелаDavey, Roger J. "The nucleation and growth of crystals from solution - molecular self assembly, materials science and process technology." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525976.
Повний текст джерелаFU, QIANG FU. "POLYMER-TEMPLATED NUCLEATION AND CRYSTAL GROWTH OF PEROVSKITE FILM AND CONDUCTIVE IONOMER DOPED PEROVSKITE FILLM FOR HIGH PERFORMANCE OF ORGANIC-INORGANIC HYBRID PEROVSKITE SOLAR CELLS." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1495207539153854.
Повний текст джерелаLid, Steffen [Verfasser], Ciacchi Lucio [Akademischer Betreuer] Colombi, Ciacchi Lucio [Gutachter] Colombi, and Dominik [Gutachter] Horinek. "Molecular mechanisms of crystal nucleation and growth at ferritin/oxide Interfaces : a theoretical investigation / Steffen Lid ; Gutachter: Lucio Colombi Ciacchi, Dominik Horinek ; Betreuer: Lucio Colombi Ciacchi." Bremen : Staats- und Universitätsbibliothek Bremen, 2018. http://d-nb.info/1166849732/34.
Повний текст джерелаER-RAJI, SOURAYA. "Preparation de l'experience spatiale mercuric iodide crystal growth first international microgravity laboratory. Controle de la nucleation de hgi2 dans une cavite et etude de la cinetique de croissance." Clermont-Ferrand 2, 1992. http://www.theses.fr/1992CLF21317.
Повний текст джерелаZhai, Zengqiang. "Molecular dynamics simulation of uni and bi-modal semicrystalline polymers : Nucleation, chain topology and microstructure." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI069.
Повний текст джерелаSemicrystalline polymers (such as polyethylene, polylactic acid, polyamide, etc.) are used in a wide range of application (such as automotive, pipes, gearing, etc.) due to promoted mechanical properties. There is strong link between the mechanical properties and microstructure of semicrystalline polymer, such as bimodality, molecular topology (the way polymer chains pass through crystalline and amorphous phases), chain entanglements, lamellar thickness, temperature, and so on. However, these microstructure cannot be access quantitatively in experiment. There exists some molecular dynamics investigations, but the homogeneous crystallization is very difficult to achieve and not extensively discussed. Thus, the crystallization mechanism of polymers and the dependence of microstructure remain relatively unclear and controversy. In this thesis, we have performed the homogeneous crystallization of polymers using a coarse-grained molecular dynamics (CG-MD) model published in our previous article 1, which favors chain alignment and crystallization. The main objective of this thesis is to use CG-MD simulation technique to provide more insights of the homogeneous nucleation and crystal growth behavior of bimodal and unimodal MWD polymers, the influence of bimodality on the molecular topology (loop, tie, cilia) and entanglement concentration, the chain disentanglement process and its influence on lamellar thickening as well the temperature dependence
Carlert, Sara. "Investigation and Prediction of Small Intestinal Precipitation of Poorly Soluble Drugs : a Study Involving in silico, in vitro and in vivo Assessment." Doctoral thesis, Uppsala universitet, Institutionen för farmaci, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-178053.
Повний текст джерелаParmentier, Delphine. "Étude cinétique de la nucléation primaire et de la croissance cristalline au cours de la coprécipitation de solutions solides d’oxalates d’actinides." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0425.
Повний текст джерелаCurrent concepts for future nuclear systems aim at improving the fuel cycle with the co management of actinides in order to enhance the fuel performance and to reduce the proliferation risk. Actinides coconversion processes play an important role by producing mixed actinides compounds used as starting materials for fuel re-fabrication. Oxalic coprecipitation is one investigated way to synthesize solid solutions of actinides – lanthanides mixed oxalates which have to meet strict standards. The nucleation and growth kinetic laws involve a fundamental crystallization parameter such as the supersaturation. For the precipitation of solid solutions, different theories are developed in the literature, however none have been verified experimentally. A new suitable expression for the supersaturation ratio applicable is presented in order to determine a general model for the expression of nucleation and growth rates. The experimental study of the primary nucleation kinetics is based on a “stopped flow” apparatus which provides a very good micromixing of the reactants. The kinetic laws of solid solutions verify the theory of Volmer and Weber applied to the coprecipitation. The method of calculating the supersaturation developed allows to find the typical behavior of nucleation. The experimental results demonstrate that the coprecipitation of the solid solution is kinetically favored over the precipitation of simple oxalates due to a lower energy barrier for the solid solution. The crystal growth rate is determined from a spectrophotometric monitoring of the reactant concentrations using a seed charge. The crystal growth is controlled by the surface integration with a spiral mechanism
Planteur, Séverine. "Étude thermodynamique et cinétique de nucléation primaire et de la croissance cristalline en vue de la modélisation de la précipitation du peroxyde d'uranium en lit fluidisé." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0019.
Повний текст джерелаThe uranium peroxide precipitation in fluidised bed patented by AREVA is currently tested on pilot scale reactor on different mine sites for industrial applications in the short term. The yellow cake produced on this way has very interesting qualities in terms of density, particle size and morphology for handing and transport. In addition, the low level of impurities present in the uranium peroxide is an important advantage for the rest of the manufacturing process fuel. The objective of this work is to determine the thermodynamics and kinetics of primary nucleation and crystal growth governing the uranium peroxide precipitation for a global modelling to stimulate the system behaviour. In order to determine the uranium peroxide solubility over a wide range of operating conditions corresponding to the industrial process conditions, a solubility model has been developed and optimized using experimental measurements. In this study, the solubility product has been identified which allows the calculation of the supersaturation, driving force of the precipitation which is an essential parameter to know in order to study the nucleation and crystal growth kinetics. The primary nucleation is investigated by a phenomenological approach which implements a method developed by Bertrand-Andrieu based on the use of a very fast reagents micromixing device (~1ms). Uranium peroxide primary nucleation kinetics follows the Volmer and Weber law. Furthermore it is shown that the primary nucleation depends on the sulphate concentration, the corresponding law incorporates this link with the BN term related to the interfacial tension and thus the quantity of sulphate absorbed. Crystal growth kinetics is also determined by a phenomenological approach. Due to the hydrogen ion production during the precipitation reaction, the crystal growth experimental study is performed by a pH-metric monitoring. Independent of the impeller speed, crystal growth is surface integration controlled with a spiral mechanism. It is shown that the uranium peroxide crystal growth law is first order with respect to the supersaturation. The kinetic parameter kg is dependent on pH and sulphate concentration, an empirical law function of the experimental conditions is then proposed for this parameter
Sebastián, Paula. "Surface Influence on the First Stages of Metal Electrodeposition in Ionic Liquids." Doctoral thesis, Universidad de Alicante, 2018. http://hdl.handle.net/10045/79870.
Повний текст джерелаSheridan, Andrew Keith. "Kinetics and temperature- and pressure-induced polymorphic phase transformations in molecular crystals." Thesis, King's College London (University of London), 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322597.
Повний текст джерелаRabeony, Haveloma Manese. "Phenomenes de nucleation en phase vapeur : condensation a basse temperature et en presence d'ions." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13012.
Повний текст джерелаHirschler, Joachim. "Influence des impuretés sur la cristallisation d'une protéine modèle dans différents milieux." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10020.
Повний текст джерелаLay, Philippe. "Elaboration et caracterisation de lingots de silicium polycristallin polix." Caen, 1987. http://www.theses.fr/1987CAEN2001.
Повний текст джерелаSchneider, Jana. "Beitrag zur Wirkungsweise von Verzögerern beim Abbinden von Stuckgipsen." Doctoral thesis, TU Bergakademie Freiberg, 2009. https://tubaf.qucosa.de/id/qucosa%3A22717.
Повний текст джерелаSchneider, Jana. "Beitrag zur Wirkungsweise von Verzögerern beim Abbinden von Stuckgipsen." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2010. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-27696.
Повний текст джерелаCampbell, James Matthew. "On topography and crystal nucleation." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/6829/.
Повний текст джерелаBreuer, Steffen. "Molecular beam epitaxy of GaAs nanowires and their suitability for optoelectronic applications." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://dx.doi.org/10.18452/16457.
Повний текст джерелаIn this work the synthesis of GaAs nanowires by molecular beam epitaxy (MBE) using the vapour-liquid-solid (VLS) mechanism is investigated. A comparison between Au- and self-assisted VLS growth is at the centre of this thesis. While the Au-assisted method is established as a versatile tool for nanowire growth, the recently developed self-assisted variation results from the exchange of Au by Ga droplets and thus eliminates any possibility of Au incorporation. By both methods, we achieve nanowires with epitaxial alignment to the Si(111) substrates. Caused by differences during nanowire nucleation, a parasitic planar layer grows between the nanowires by the Au-assisted method, but can be avoided by the self-assisted method. Au-assisted nanowires grow predominantly in the metastable wurtzite crystal structure, while their self-assisted counterparts have the zincblende structure. All GaAs nanowires are fully relaxed and the strain arising from the lattice mismatch between GaAs and Si of 4.1\% is accommodated by misfit dislocations at the interface. Self-assisted GaAs nanowires are generally found to have vertical and non-polar side facets, while tilted and polar nanofacets were described for Au-assisted GaAs nanowires. We employ VLS nucleation theory to understand the effect of the droplet material on the lateral facets. Optoelectronic applications require long minority carrier lifetimes at room temperature. We fabricate GaAs/(Al,Ga)As core-shell nanowires and analyse them by transient photoluminescence (PL) spectroscopy. The results are 2.5 ns for the self-assisted nanowires as well as 9 ps for the Au-assisted nanowires. By temperature-dependent PL measurements we find a characteristic activation energy of 77 meV that is present only in the Au-assisted nanowires. We conclude that most likely Au is incorporated from the droplets into the GaAs nanowires and acts as a deep, non-radiative recombination centre.
Ward, Martin Robert. "Non-photochemical laser-induced nucleation (NPLIN) : an experimental investigation of crystal nucleation." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/8966.
Повний текст джерелаBriuglia, Maria Lucia. "Primary and secondary crystal nucleation of pharmaceutics." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28867.
Повний текст джерелаBenissad, Farida. "Elaboration de fibres de carbone à partir du mélange méthane-hydrogène." Grenoble INPG, 1986. http://www.theses.fr/1986INPG0121.
Повний текст джерелаMerlin, Aurore. "Cinétiques de concentration de suspensions colloïdales par évaporation microfluidique : de la solution diluée aux cristaux colloïdaux." Phd thesis, Bordeaux 1, 2010. http://tel.archives-ouvertes.fr/tel-00564692.
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 джерелаPino-García, Osvaldo. "Influence of Admixtures on Crystal Nucleation of Vanillin." Doctoral thesis, KTH, Chemical Engineering and Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3800.
Повний текст джерелаAdmixtures like reactants and byproducts are solublenon-crystallizing compounds that can be present in industrialsolutions and affect crystallization of the main substance.This thesis provides experimental and molecular modellingresults on the influence of admixtures on crystal nucleation ofvanillin (VAN). Seven admixtures: acetovanillone (AVA),ethylvanillin (EVA), guaiacol (GUA), guaethol (GUE), 4-hydroxy-acetophenone (HAP), 4-hydroxy-benzaldehyde (HBA), andvanillic acid (VAC) have been used in this study. Classicalnucleation theory is used as the basis to establish arelationship between experimental induction time andsupersaturation, nucleation temperature, and interfacialenergy. A novel multicell device is designed, constructed, andused to increase the experimental efficiency in thedetermination of induction times by using 15 nucleation cellsof small volumes simultaneously. In spite of the largevariation observed in the experiments, the solid-liquidinterfacial energy for each VAN-admixture system can beestimated with an acceptable statistical confidence. At 1 mole% admixture concentration, the interfacial energy is increasedin the presence of GUA, GUE, and HBA, while it becomes lower inthe presence of the other admixtures. As the admixtureconcentration increases from 1 to 10 mole %, the interfacialenergy also increases. The interfacial energies obtained are inthe range 7-10 mJ m-2. Influence of admixtures on metastable zone widthand crystal aspect ratio of VAN is also presented. Theexperimental results show that the admixtures studied arepotential modifiers of the nucleation of VAN. Molecularmodelling by the program Cerius2 is used to identify the likelycrystal growth faces. Two approaches, the surface adsorptionand the lattice integration method, are applied to estimatequantitatively the admixture-crystal interaction energy on thedominating crystal faces of VAN,i.e., {0 0 1} and {1 0 0}. However, a simple and clearcorrelation between the experimental values of interfacialenergy and the calculated interaction energies cannot beidentified. A qualitative structural analysis reveals a certainrelationship between the molecular structure of admixtures andtheir effect on nucleation. The determination of the influenceof admixtures on nucleation is still a challenge. However, themolecular and crystal structural approach used in this thesiscan lead to an improved fundamental understanding ofcrystallization processes. Keywords: Crystallization,nucleation, vanillin, admixtures, additives, impurities,induction time, interfacial energy, molecular modelling,interaction energy.
Parker, Alexander S. "Quantitative crystal investigations : surface dissolution and nucleation processes." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/88282/.
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 джерелаSchindler, Manon. "Deracémisation du chlorate de sodium avec et sans l’influence du dithionate de sodium." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMR004.
Повний текст джерелаIn the field of pharmaceutical chemistry, crystallization based methods are used to obtain pure enantiomers. The advantage of deracemization is the conversion of the unwanted enantiomer into the desired enantiomer by means of racemization in liquid phase, giving rise to a theoretical yield of 100%. The mechanism of Temperature Cycling Induced Deracemization (TCID) process, still matter of debate, has been investigated in this thesis. Research was focused on the development of the TCID process for sodium chlorate (NaClO3). This model compound is achiral at the solvated state which enables to focus investigation on crystallization mechanisms involved during deracemization. After the full solid state characterization of sodium dithionate (Na2S2O6), this compound has been used as a nonchiral impurity in the TCID process of NaClO3 and highlighted the key role of secondary nucleation in the process. Thus, the success of the TCID process depends on the right balance between growth and secondary nucleation. From an industrial perspective, the Couette Taylor reactor has been considered as a promising device for the development of continuous deracemization process. Attempts to deracemize NaClO3 in this kind of reactor showed that symmetry breaking and deracemization of NaClO3 were successful. Nonetheless, crystal recycling, via either attrition or secondary nucleation, has to be improved to enhance deracemization process before considering the execution of continuous process
Uwaha, Makio, and Katsunobu Koyama. "Transition from nucleation to ripening in the classical nucleation model." Elsevier, 2010. http://hdl.handle.net/2237/13867.
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 джерелаKananagh, A. "The crystal growth and crystal growth inhibition of calcium carbonate." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383820.
Повний текст джерелаGong, Li. "Selective external oxidation of Fe-Mn (1 wt.%) binary alloys during continuous annealing." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASC014.
Повний текст джерелаThis work is focused on the selective oxidation behavior of Fe-Mn (1 wt.%) binary alloy during continuous annealing under the industrial galvanizing conditions, to understand the diffusion of manganese and oxygen and the mechanism oxide formation on the surface.An analytical model was first developed to describe the surface reactions and thermodynamics involving water vapor and diffusion of O and Mn in the alloy, and the heterogeneous nucleation and growth of MnO oxides on the surface. Theoretical equations were established and sovled to calculate the critical radius and nucleation rate of MnO embryos and the size and surface coverage fractions of MnO oxides as a function of annealing.Annealing experiments were then conducted and the annealed surfaces were analyzed by: EBSD maps to determine the ferrite grain orientation; EDS analysis to determine the chemical nature; SEM and AFM to study the geometrical characteristics of oxides; TEM/STEM on the crosee-sections to observe the lateral shape of oxides; XPS to study the oxide nature and Mn concentration profiles as a function of depth and diffraction patterns to determine the orientation relationship of MnO and ferrite substrate.Wulffmaker software was used to simulate the equilibrium crystal of MnO. Observations by SEM, AFM and TEM/STEM make it possible to realize the facets composing MnO crystals