Multiplicity of metastable nonergodic states of a dispersed nonwetting liquid in a disordered nanoporous medium

Paraffin confined in carbon nanotubes as nano-encapsulated phase change materials: experimental and molecular dynamics studies

“…It is slightly higher than that of pure paraffin and slightly lower than that of the mixed paraffins intercalated in CNTs reported by Sinha-Ray. 9 Compared with the mass fraction, the degree of lling, 22 which is dened as the volume of paraffin vs. the volume of empty tube CNTs, could better reect the availability of empty tube CNTs. As the mass of paraffin conned in the CNTs is 3.1 mg, the total mass of paraffin in the CNTs is calculated to be 0.5034 mg.…”

Anomalously slow relaxation of the system of strongly interacting liquid clusters in a disordered nanoporous medium: Self-organized criticality

“…According to Eqs. (14) and (15), a change in the energy of the porous medium at the extrusion of the liquid from filled pores can be represented in the form of the sum of the energies of the local configuration of the pore and its environment.…”

“…When excess pressure is reduced to zero, the liquid should be extruded from pores under the action of the surface buoyancy forces of the hydrophobic framework of the medium. New information on the disordered structure can be obtained by studying the confinement of the nonwetting liquid in the random structure of pores [11][12][13][14]. According to [13,14], this phenomenon is due to the effective interaction (attraction) between liquid clusters in neighboring pores, which is determined by correlation in the arrangement of pores.…”

“…New information on the disordered structure can be obtained by studying the confinement of the nonwetting liquid in the random structure of pores [11][12][13][14]. According to [13,14], this phenomenon is due to the effective interaction (attraction) between liquid clusters in neighboring pores, which is determined by correlation in the arrangement of pores. An anomalously slow relaxation of the state of the confined liquid was observed in [15] as the slow extrusion of the liquid from the porous medium with the inverse power-law dependence of the volume of the confined liquid on the time with the exponent less than 0.1.…”