Browsing Exact and Earth Sciences by Author "Torres, Evy Augusto Salcedo"
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Core-softened fluids, water-like anomalies, and the liquid-liquid critical points
Torres, Evy Augusto Salcedo; Oliveira, Alan Barros de; Barraz Junior, Ney Marçal; Chakravarty, Charusita; Barbosa, Marcia Cristina Bernardes (2011) [Journal article]Molecular dynamics simulations are used to examine the relationship between water-like anomalies and the liquid-liquid critical point in a family of model fluids with multi-Gaussian, core-softened pair interactions. The ... -
Effects of the attractive interactions in the thermodynamic, dynamic, and structural anomalies of a two length scale potential
Silva, Jonathas Nunes da; Torres, Evy Augusto Salcedo; Oliveira, Alan Barros de; Barbosa, Marcia Cristina Bernardes (2010) [Journal article]Using molecular dynamic simulations, we study a system of particles interacting through a continuous core-softened potentials consisting of a hard core, a shoulder at closest distances, and an attractive well at further ... -
Entropy, diffusivity and the energy landscape of a waterlike fluid
Oliveira, Alan Barros de; Torres, Evy Augusto Salcedo; Chakravarty, Charusita; Barbosa, Marcia Cristina Bernardes (2010) [Journal article]Molecular dynamics simulations and instantaneous normal mode (INM) analysis of a fluid with core-softened pair interactions and waterlike liquid-state anomalies are performed to obtain an understanding of the relationship ... -
Multiple liquid-liquid critical points and density anomaly in core-softened potentials
Barbosa, Marco Aurélio Alves; Torres, Evy Augusto Salcedo; Barbosa, Marcia Cristina Bernardes (2013) [Journal article]The relation between liquid-liquid phase transitions andwaterlike density anomalies in core-softened potentials of fluids was investigated in an exactly solvable one-dimensional lattice model and in a three-dimensional ... -
Nanoscale sliding friction versus commensuration ratio : molecular dynamics simulations
Torres, Evy Augusto Salcedo; Goncalves, Sebastian; Scherer, Claudio; Kiwi, Miguel (2006) [Journal article]The pioneer work of Krim and Widom [Phys. Rev. B 38, 12184 (1988)] unveiled the origin of the viscous nature of friction at the atomic scale. This generated extensive experimental and theoretical activity. However, fundamental ... -
Propagation of transverse domain walls in homogeneous magnetic nanowires
Allende Prieto, Sebastián; Altbir Drullinsky, Dora; Torres, Evy Augusto Salcedo; Bahiana, Monica Pereira; Sinnecker, João Paulo (2008) [Journal article]The field driven nucleation and propagation of transverse domain walls in a uniform Ni nanowire is examined by means of Monte Carlo simulations combined with a scaling technique. Simulations show a nonlinear behavior ... -
Relation between boundary slip mechanisms and waterlike fluid behavior
Dallagnollo, Patricia Ternes; Torres, Evy Augusto Salcedo; Barbosa, Marcia Cristina Bernardes (2018) [Journal article]The slip of a fluid layer in contact with a solid confining surface is investigated for different temperatures and densities using molecular dynamic simulations. We show that for an anomalous waterlike fluid the slip goes ... -
Relation between occupation in the first coordination shells and widom line in core-softened potentials
Torres, Evy Augusto Salcedo; Barraz Junior, Ney Marçal; Barbosa, Marcia Cristina Bernardes (2013) [Journal article]Three core-softened families of potentials are checked for the presence of density and diffusion anomalies. These potentials exhibit a repulsive core with a softening region and at larger distances an attractive well. We ... -
Thermodynamic, dynamic, and structural anomalies for shoulderlike potentials
Barraz Junior, Ney Marçal; Torres, Evy Augusto Salcedo; Barbosa, Marcia Cristina Bernardes (2009) [Journal article]Using molecular dynamic simulations we study a family of continuous core-softened potentials consisting of a hard core, a shoulder at closest distances, and an attractive well at further distance. The repulsive shoulder ... -
Thermodynamic, dynamic, structural, and excess entropy anomalies for core-softened potentials
Barraz Junior, Ney Marçal; Torres, Evy Augusto Salcedo; Barbosa, Marcia Cristina Bernardes (2011) [Journal article]Using molecular dynamic simulations, we study three families of continuous core-softened potentials consisting of two length scales: a shoulder scale and an attractive scale. All the families have the same slope between ...