The influence of random changes in the adsorbing potential on phase transitions in a Lennard-Jones fluid confined to energetically heterogeneous slit-like pores |
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| Authors: | JOANNA RESZKO-ZYGMUNT WOJCIECH RŻYSKO STEFAN SOKOŁOWSKI ZOFIA SOKOŁOWSKA |
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| Institution: | 1. Department for the Modelling of Physico-Chemical Processes , Maria Curie-Sk?odowska University , 20031, Lublin, Poland;2. Institute of Agrophysics, Polish Academy of Sciences , 20290, Lublin, Do?wiadczalna 4, Poland |
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| Abstract: | A density functional approach is used to study the adsorption and phase behaviour of a Lennard-Jones (LJ) fluid in slit-like pores with energetically heterogeneous walls, investigating how the randomly varying part of the fluid-solid potential imposed on a periodic ‘back-ground’ potential modifies the phase behaviour of the confined fluid. Non-local density functional theory is employed to describe the system. To study the system with a random external field, the method used is based on investigations of several replicas of the system and on averaging the final thermodynamic results over the replicas. |
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