Literatura académica sobre el tema "Ab initio molecular dynamics. DFT"
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Artículos de revistas sobre el tema "Ab initio molecular dynamics. DFT"
Muriel, Wilver A., Juan F. Botero-Cadavid, Carlos Cárdenas y William Rodríguez-Córdoba. "A theoretical study of the photodynamics of salicylidene-2-anthrylamine in acetonitrile solution". Physical Chemistry Chemical Physics 20, n.º 46 (2018): 29399–411. http://dx.doi.org/10.1039/c8cp06145a.
Texto completoMarinho, Enesio y Pedro Alves da Silva Autreto. "Me-graphane: tailoring the structural and electronic properties of Me-graphene via hydrogenation". Physical Chemistry Chemical Physics 23, n.º 15 (2021): 9483–91. http://dx.doi.org/10.1039/d0cp06684b.
Texto completoVojvodin, Cameron S., Sean T. Holmes, Lara K. Watanabe, Jeremy M. Rawson y Robert W. Schurko. "Multi-component crystals containing urea: mechanochemical synthesis and characterization by 35Cl solid-state NMR spectroscopy and DFT calculations". CrystEngComm 24, n.º 14 (2022): 2626–41. http://dx.doi.org/10.1039/d1ce01610e.
Texto completoPezzotti, Simone, Daria Ruth Galimberti y Marie-Pierre Gaigeot. "Deconvolution of BIL-SFG and DL-SFG spectroscopic signals reveals order/disorder of water at the elusive aqueous silica interface". Physical Chemistry Chemical Physics 21, n.º 40 (2019): 22188–202. http://dx.doi.org/10.1039/c9cp02766a.
Texto completoLaconsay, Croix J., Ka Yi Tsui y Dean J. Tantillo. "Tipping the balance: theoretical interrogation of divergent extended heterolytic fragmentations". Chemical Science 11, n.º 8 (2020): 2231–42. http://dx.doi.org/10.1039/c9sc05161a.
Texto completoChen, Chun-Teh, Francisco J. Martin-Martinez, Gang Seob Jung y Markus J. Buehler. "Polydopamine and eumelanin molecular structures investigated with ab initio calculations". Chemical Science 8, n.º 2 (2017): 1631–41. http://dx.doi.org/10.1039/c6sc04692d.
Texto completoLou, Ping. "Hybrid structures of a BN nanoribbon/single-walled carbon nanotube: ab initio study". RSC Advances 5, n.º 68 (2015): 55458–67. http://dx.doi.org/10.1039/c5ra08331a.
Texto completoSheng, Tian, Jin-Yu Ye, Wen-Feng Lin y Shi-Gang Sun. "An insight into methanol oxidation mechanisms on RuO2(100) under an aqueous environment by DFT calculations". Physical Chemistry Chemical Physics 19, n.º 11 (2017): 7476–80. http://dx.doi.org/10.1039/c6cp08522a.
Texto completoHu, Jiye, Kyongjin Pang y Bizhang Dong. "Mechanism and identify photolysis products of fluopyram under TiO2: Experiments, DFT and ab initio Molecular dynamics study". SDRP Journal of Earth Sciences & Environmental Studies 4, n.º 4 (2019): 681–90. http://dx.doi.org/10.25177/jeses.4.3.ra.504.
Texto completoSaiz, Fernan y Nick Quirke. "The excess electron in polymer nanocomposites". Physical Chemistry Chemical Physics 20, n.º 43 (2018): 27528–38. http://dx.doi.org/10.1039/c8cp04741c.
Texto completoTesis sobre el tema "Ab initio molecular dynamics. DFT"
Rey, Jérôme. "Mechanisms and kinetics of alkenes isomerization and cracking in chabazite zeolite quantified by constrained ab initio molecular dynamics". Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEN049.
Texto completoHydrocracking and hydroisomerization catalysts are bifunctional, with a hydro-dehydrogenation function and an acidic function, typically an acid zeolite, to isomerize and crack alkenes. With advanced ab initio molecular dynamics approach, and explicit simulation of the effects of temperature (300 – 500 K), we investigate the mechanisms of isomerization and cracking reactions of C7 alkenes within the chabazite zeolite in order to provide reliable rate constants and explain the observed products distribution. By blue moon sampling, we established for the first time, the free energy profiles for the isomerization of C7 alkenes in zeolites, with carbenium ions as intermediates (and protonated cyclopropane (PCP) as transition states), connecting di- to tri-branched, and mono- to di-branched alkene isomers (Sections III and IV). We demonstrate that the dynamic effects with the correct sampling of rotational conformers play an important role to quantify the stability of the key intermediates and transition states. These effects could not be captured by previous static DFT simulations. The much lower barriers for type A isomerization mechanisms are thus recovered, and assigned to a loose transition state, while the transition state of type B isomerization is tighter, due to the formation of an edge PCP. The study of cracking reactions (Section V) with the same methods, unravel the role of secondary cations. For the first time, we identify the structures of transition states involved in the β-scission mechanisms. From this analysis, we deduce the ab initio- rate constants that could be used in future kinetic modeling to predict activity and selectivity of the catalyst
Das, S. "Theoretical investigation on structure and reactivity properties of molecule and metal clusters: a conceptual DFT and Ab initio molecular dynamics approach". Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2015. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2015.
Texto completoFailali, Abdelmounaim. "Molecular modeling of organic phases after plutonium extraction". Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR002.
Texto completoThe nuclear fuel after its dwell time in reactor still bears a substantial amount of recoverable U and Pu. The recovery and purification of these actinides is achieved using a hydro-metallurgical process known as PUREX (Plutonium Uranium Recovering by EXtraction). Based on Liquid-Liquid extraction techniques, this process requires the use of a specific molecule to extract Pu and U, the tri-n-butylphosphate TBP. N,N-dialkylamides (monoamides) are regarded as an alternative family of extractants to TBP, as they are well-known for their strong extraction ability of Pu(IV) and U(VI) elements. In addition to this, they show some interesting features, such as, the strong dependence of the extraction properties (distribution coefficient and selectivity) on the ligands structure as well as chemical conditions. In order to propose the best extracting molecule design for future fuel reprocessing plants, it is crucial to understand the relationship between the structure and the extraction ability. However, the radioactivity of these elements combined with their chemical complexity make the study of these phases experimentally a real challenge. Hence, molecular modeling appears to be the golden solution for getting new insights on this issue.In the first part of this thesis, a relativistic density functional theory study was performed to investigate the influence of the monoamides alkyl chain nature on the relative stability of Pu(IV) complexes. It was possible to reach a better understanding of the strong influence of amide structure on plutonium extraction. For both investigated amide-plutonium-nitrate complexes (inner and outer-sphere complexes), it was found that the introduction of a bulky alkyl group on the carbonyl side has a major impact on the complexation energy. The impact of the polarity of the solution was also investigated and found to be significant.In the second part, within the aim of studying more realistic systems, i.e systems containing long alkyl chains monoamides, heavy elements and other counter ions, and to go beyond the static picture of QM/DFT optimized geometries with molecular dynamics simulations, we have developed a consistent polarizable FF model for the solvent molecules (alkanes, monoamides) based solely on quantum chemical calculations. The chosen ab initio parameterization approach as well as the final force field are presented. Then, the results of molecular dynamics simulations were compared to available experimental macroscopic thermodynamics and structural properties, and show an excellent agreement, making the predictions of properties of pure monoamides reliable. Finally, preliminary MD simulations results for monoamides-dodecane mixtures (DEHiBA/dodecane and DEHBA/dodecane) are presented
Cheik, Njifon Ibrahim. "Modélisation des modifications structurales, électroniques et thermodynamiques induites par les défauts ponctuels dans les oxydes mixtes à base d'actinides (U,Pu)O2". Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0356/document.
Texto completo(U,Pu)O2 (commonly called MOX) is currently used as nuclear fuel in pressurized water reactors with a Pu content of around 10 wt.%, and is envisaged as the reference fuel in Generation IV sodium fast reactors (SFR) with a Pu content of around 25 wt.%. Under operation, (U,Pu)O2 is submitted to fission reactions which generate a large quantity and variety of point defects, as well as fission products. By migrating, point defects and gaseous fission products can aggregate into nano-voids, dislocations and fission gas bubbles, which lead to the modification of the fuel microstructure. Therefore, a better description of the fuel behaviour at the atomic scale, and especially of the elementary mechanisms involved in the diffusion of point defects and fission products, is necessary to refine the models used in the fuel performance codes used to simulate the behaviour of fuels at the macroscopic scale. We use electronic structure calculations based on the DFT+U method combined with the occupation matrix control scheme (OMC) to investigate (U,Pu)O2 properties for various Pu contents. Static energy minimizations and ab initio molecular dynamics were used. We have first determined bulk structural, electronic and thermodynamics properties of (U,Pu)O2. We then studied the stability of point defects in (U,Pu)O2 and (U,Ce)O2, as well as the structural and electronic modifications induced by these point defects, in (U,Pu)O2 and the common experimental surrogate (U,Ce)O2. Finally, the fission gas (Kr and Xe) and helium (He) trapping and solubility in (U,Pu)O2 matrix are investigated
Eklund, Robert. "Computational Analysis of Carbohydrates : Dynamical Properties and Interactions". Doctoral thesis, Stockholm : Department of Organic Chemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-538.
Texto completoRasim, Karsten. "Conductivité protonique et structures locales par simulations ab initio d'oxydes utilisés comme électrolyte dans les piles à combustible". Phd thesis, Université de Nantes, 2011. http://tel.archives-ouvertes.fr/tel-00983483.
Texto completoCaussé, Maélie. "Étude de quelques propriétés de superhydrures à haute pression et à haute température". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF041.
Texto completoOver the past ten years, a new chemistry of hydrogen with metals has been observed under high pressures. Very hydrogen-rich compounds, called superhydrides, form in the 100 GPa range. Remarkable properties of these compounds have been highlighted, such as BCS superconductivity at very high critical temperatures, like LaH₁₀ with a hydrogen cage sublattice and superconductivity at -23 ° C. A current question is whether such compounds can be stable at ambient pressure, and the path of ternary hydrides is currently being explored. Firstly, using ab initio molecular dynamics calculations, we have revealed a new property of LaH₁₀ : superionicity, which indicates very rapid diffusion of hydride ions. This property should exist for other superhydrides. Secondly, we have searched for ternary hydrides in the Y-Fe-H system. By compressing, under high hydrogen pressure in a diamond anvil press, the Laves phase compound YFe₂, well known for its hydrogen storage capacity at ambient pressure, we discovered two interstitial hydrides, YFe₂H₆ and YFe₂H₇. We also demonstrated a limit to hydrogen incorporation in this type of compound. These two compounds are not stable at ambient pressure. Finally, using laser heating, we synthesized the ternary hydride Y₃Fe₄H₂₀, which was brought back metastable at ambient pressure. The structure and properties of this superhydride were characterized by single-crystal X-ray diffraction and ab initio calculations. An unprecedented structure for a hydride is highlighted with [FeH₈] anionic entities linked to each other and forming cages around yttrium cations. This compound is metallic and this structure could serve as a model to find a ternary hydride superconductor stable at ambient pressure
Halbert, Stéphanie. "Étude du comportement dynamique de systèmes catalytiques greffés sur silice". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2013. http://tel.archives-ouvertes.fr/tel-01005016.
Texto completoEliah, Dawod Ibrahim. "Structural integrity of highly ionized peptides". Thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-387886.
Texto completoCheik, Njifon Ibrahim. "Modélisation des modifications structurales, électroniques et thermodynamiques induites par les défauts ponctuels dans les oxydes mixtes à base d'actinides (U,Pu)O2". Electronic Thesis or Diss., Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0356.
Texto completo(U,Pu)O2 (commonly called MOX) is currently used as nuclear fuel in pressurized water reactors with a Pu content of around 10 wt.%, and is envisaged as the reference fuel in Generation IV sodium fast reactors (SFR) with a Pu content of around 25 wt.%. Under operation, (U,Pu)O2 is submitted to fission reactions which generate a large quantity and variety of point defects, as well as fission products. By migrating, point defects and gaseous fission products can aggregate into nano-voids, dislocations and fission gas bubbles, which lead to the modification of the fuel microstructure. Therefore, a better description of the fuel behaviour at the atomic scale, and especially of the elementary mechanisms involved in the diffusion of point defects and fission products, is necessary to refine the models used in the fuel performance codes used to simulate the behaviour of fuels at the macroscopic scale. We use electronic structure calculations based on the DFT+U method combined with the occupation matrix control scheme (OMC) to investigate (U,Pu)O2 properties for various Pu contents. Static energy minimizations and ab initio molecular dynamics were used. We have first determined bulk structural, electronic and thermodynamics properties of (U,Pu)O2. We then studied the stability of point defects in (U,Pu)O2 and (U,Ce)O2, as well as the structural and electronic modifications induced by these point defects, in (U,Pu)O2 and the common experimental surrogate (U,Ce)O2. Finally, the fission gas (Kr and Xe) and helium (He) trapping and solubility in (U,Pu)O2 matrix are investigated
Libros sobre el tema "Ab initio molecular dynamics. DFT"
Hinchliffe, Alan. Ab initio determination of molecular properties. Bristol: A. Hilger, 1987.
Buscar texto completoSahli, Beat. Ab initio molecular dynamics simulation of diffusion in silicon. Konstanz: Hartung-Gorre, 2007.
Buscar texto completoJürg, Hutter, ed. Ab initio molecular dynamics: Basic theory and advanced methods. Cambridge: Cambridge University Press, 2009.
Buscar texto completoSearles, D. Ab initio variational calculations of molecular vibrational-rotational spectra. Berlin: Springer-Verlag, 1994.
Buscar texto completoSearles, D. Ab initio variational calculations of molecular vibrational-rotational spectra. Berlin: Springer-Verlag, 1993.
Buscar texto completoTsutsumi, Takuro. Ab Initio Molecular Dynamics Analysis Based on Reduced-Dimensionality Reaction Route Map. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-7321-7.
Texto completoMarx, Dominik y Jürg Hutter. Ab Initio Molecular Dynamics: The Virtual Laboratory Approach. Wiley & Sons, Incorporated, John, 2010.
Buscar texto completoMarx, Dominik y Jürg Hutter. Ab Initio Molecular Dynamics: Basic Theory and Advanced Methods. Cambridge University Press, 2009.
Buscar texto completoMarx, Dominik y Jürg Hutter. Ab Initio Molecular Dynamics: Basic Theory and Advanced Methods. Cambridge University Press, 2012.
Buscar texto completoMarx, Dominik y Jürg Hutter. Ab Initio Molecular Dynamics: Basic Theory and Advanced Methods. Cambridge University Press, 2009.
Buscar texto completoCapítulos de libros sobre el tema "Ab initio molecular dynamics. DFT"
Parrinello, M. "Ab Initio Molecular Dynamics". En Molecular Dynamics Simulations, 151–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84713-4_13.
Texto completoKarmani, Rajesh K., Gul Agha, Mark S. Squillante, Joel Seiferas, Marian Brezina, Jonathan Hu, Ray Tuminaro et al. "Ab Initio Molecular Dynamics". En Encyclopedia of Parallel Computing, 1. Boston, MA: Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-09766-4_2256.
Texto completoLaasonen, Kari. "Ab Initio Molecular Dynamics". En Methods in Molecular Biology, 29–42. Totowa, NJ: Humana Press, 2012. http://dx.doi.org/10.1007/978-1-62703-017-5_2.
Texto completoOttonello, Giulio Armando. "Ab Initio Molecular Dynamics". En Springer Geochemistry, 519–34. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-21837-8_13.
Texto completoRapaport, D. C. "Ab Initio Hydrodynamics via Atomistic Simulation". En Molecular Dynamics Simulations, 139–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84713-4_12.
Texto completoBen-Nun, Michal y Todd J. Martínez. "Ab Initio Quantum Molecular Dynamics". En Advances in Chemical Physics, 439–512. New York, USA: John Wiley & Sons, Inc., 2002. http://dx.doi.org/10.1002/0471264318.ch7.
Texto completoHammer, B. y Ole H. Nielsen. "Parallel ab-initio molecular dynamics". En Lecture Notes in Computer Science, 295–302. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-60902-4_32.
Texto completoBlöchl, Peter E., Hans Martin Senn y Antonio Togni. "Molecular Reaction Modeling from Ab-Initio Molecular Dynamics". En ACS Symposium Series, 88–99. Washington, DC: American Chemical Society, 1999. http://dx.doi.org/10.1021/bk-1999-0721.ch007.
Texto completoCar, Roberto. "Modeling Materials by Ab-Initio Molecular Dynamics". En The Kluwer International Series in Engineering and Computer Science, 23–37. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0461-6_3.
Texto completoAndreoni, Wanda, Giorgio Pastore, Roberto Car, Michele Parrinello y Paolo Giannozzi. "AB-Initio Molecular Dynamics Studies of Microclusters". En Band Structure Engineering in Semiconductor Microstructures, 129–35. Boston, MA: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4757-0770-0_11.
Texto completoActas de conferencias sobre el tema "Ab initio molecular dynamics. DFT"
Luo, Tengfei y John R. Lloyd. "Ab-Initio Molecular Dynamics Study of Nano-Scale Thermal Energy Transport". En ASME 2007 2nd Energy Nanotechnology International Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/enic2007-45033.
Texto completoLi, Zhiqiang, Huanhuan Zhao, Linhua Liu y Jia-Yue Yang. "Interfacial Transport Across Graphene-Water From Machine Learning Molecular Dynamics". En ASME 2024 7th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/mnhmt2024-131966.
Texto completoQueiroz, Nayhara B. D. F. y M. S. Amaral. "EFEITOS DE MICRO-HIDRATAÇÃO EM PROPRIEDADES CONFORMACIONAIS E ESPECTROSCÓPICAS DO ANTIBIÓTICO MARBOFLOXACINO". En VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular. Universidade de Brasília, 2020. http://dx.doi.org/10.21826/viiiseedmol2020177.
Texto completoKunjikuttan Nair, Akhil, Carlos Manuel Da Silva y Cristina H. Amon. "Machine-Learning-Based Thermal Conductivity Prediction in Two-Dimensional TiS2/MoS2 Van Der Waals Heterostructures". En ASME 2024 7th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/mnhmt2024-129692.
Texto completoSingh, Akash y Yumeng Li. "Machine Learning Potentials for Graphene". En ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-95341.
Texto completoMadden(, Paul A., James Penman y Ettore Fois. "Ab Initio Molecular Dynamics Applied to Molecular Systems". En Advances in biomolecular simulations. AIP, 1991. http://dx.doi.org/10.1063/1.41316.
Texto completoZhanserkeev, Asylbek y Ryan Steele. "ADIABATIC MOLECULAR ORBITAL TRACKING IN AB INITIO MOLECULAR DYNAMICS". En 2021 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2021. http://dx.doi.org/10.15278/isms.2021.rl05.
Texto completoFrancisco, Joseph y Tarek Trabelsi. "SPECTROSCOPY OF JUPITER'S ATMOSPHERE: INSIGHTS FROM DFT AND AB-INITIO CALCULATIONS". En 74th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.th01.
Texto completoPASTORE, GIORGIO. "AB-INITIO MOLECULAR-DYNAMICS: THE CAR-PARRINELLO METHOD". En Proceedings of the Miniworkshop on “Methods of Electronic Structure Calculations” and Working Group on “Disordered Alloys”. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789814503778_0011.
Texto completoWei, Dongqing. "Ab Initio Molecular Dynamics Simulations of Molecular Collisions of Nitromethane". En Shock Compression of Condensed Matter - 2001: 12th APS Topical Conference. AIP, 2002. http://dx.doi.org/10.1063/1.1483564.
Texto completoInformes sobre el tema "Ab initio molecular dynamics. DFT"
Woodward, Christopher y James Lill. Ab-Initio Molecular Dynamics Simulations of Molten Ni-Based Superalloys (Preprint). Fort Belvoir, VA: Defense Technical Information Center, octubre de 2011. http://dx.doi.org/10.21236/ada553357.
Texto completoAnders David Ragnar, Andersson, Wang Gaoxue, Yang Ping y Beeler Benjamin. KCl-UCl3 molten salts investigated by Ab Initio Molecular Dynamics (AIMD) simulations. Office of Scientific and Technical Information (OSTI), diciembre de 2023. http://dx.doi.org/10.2172/2373163.
Texto completoAndersson, Anders y Chao Jiang. Predicting thermodynamic and thermophysical properties of molten chloride salts from ab-initio and classical molecular dynamics simulations. Office of Scientific and Technical Information (OSTI), agosto de 2021. http://dx.doi.org/10.2172/1813811.
Texto completoSenkov, O. N. y Y. Q. Cheng. Ab Initio Molecular Dynamics Simulation of the Amorphous Structure of Ca-Mg-Cu and Ca-Mg-Zn Alloys (Preprint). Fort Belvoir, VA: Defense Technical Information Center, agosto de 2012. http://dx.doi.org/10.21236/ada566094.
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