Liquid Phase Stability Under an Extreme Temperature Gradient

Liang, Zhi; Sasikumar, Kiran; Keblinski, Pawel

doi:10.1103/physrevlett.111.225701

Cited by 9 publications

(14 citation statements)

References 21 publications

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“…Similar to the results reported for argon in Ref. 30, due to nucleation barriers, we see that the vaporization of the bulk liquid occurs at a temperature higher than the boiling point and the condensation occurs for a supercooled fluid (the vertical dotted line in Fig. 9(a) marks the boiling point at 50 atm).…”

Section: B Bulk and Surface Energiessupporting

confidence: 88%

“…(1) in Ref. 30. Figure 9(c) shows the plot of the surface tension values for different temperatures.…”

Section: B Bulk and Surface Energiesmentioning

confidence: 97%

“…30. Here, we study the liquid-vapor coexistence (with flat interface) of 13 500 atoms by placing the liquid domain at the center of a 8 × 8 × 25 nm 3 simulation box.…”

Section: B Bulk and Surface Energiesmentioning

confidence: 99%

“…(2) and (3) in Ref. 30 we, then, calculate the Gibbs free energy difference between the two phases at different temperatures and pressures.…”

Section: B Bulk and Surface Energiesmentioning

confidence: 99%

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Curvature induced phase stability of an intensely heated liquid

Sasikumar

Liang

Cahill

et al. 2014

The Journal of Chemical Physics

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We use non-equilibrium molecular dynamics simulations to study the heat transfer around intensely heated solid nanoparticles immersed in a model Lennard-Jones fluid. We focus our studies on the role of the nanoparticle curvature on the liquid phase stability under steady-state heating. For small nanoparticles we observe a stable liquid phase near the nanoparticle surface, which can be at a temperature well above the boiling point. Furthermore, for particles with radius smaller than a critical radius of 2 nm we do not observe formation of vapor even above the critical temperature. Instead, we report the existence of a stable fluid region with a density much larger than that of the vapor phase. We explain the stability in terms of the Laplace pressure associated with the formation of a vapor nanocavity and the associated effect on the Gibbs free energy.

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Section: B Bulk and Surface Energiessupporting

confidence: 88%

“…(1) in Ref. 30. Figure 9(c) shows the plot of the surface tension values for different temperatures.…”

Section: B Bulk and Surface Energiesmentioning

confidence: 97%

“…30. Here, we study the liquid-vapor coexistence (with flat interface) of 13 500 atoms by placing the liquid domain at the center of a 8 × 8 × 25 nm 3 simulation box.…”

Section: B Bulk and Surface Energiesmentioning

confidence: 99%

“…(2) and (3) in Ref. 30 we, then, calculate the Gibbs free energy difference between the two phases at different temperatures and pressures.…”

Section: B Bulk and Surface Energiesmentioning

confidence: 99%

See 2 more Smart Citations

Curvature induced phase stability of an intensely heated liquid

Sasikumar

Liang

Cahill

et al. 2014

The Journal of Chemical Physics

Self Cite

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show abstract

“…Although the behavior of equilibrium inhomogeneous fluid systems has been rationalized within the framework of the density functional theory, the description of out-of-equilibrium situations as for instance created by an external temperature gradient has been poorly explored [1]. This latter physical sit uation is relevant to experiment where a metallic nanoparticle surrounded by liquid water is heated up by a laser source, thus creating a very large local temperature gradient ~1 K/nm in the fluid.…”

Section: Introductionmentioning

confidence: 99%

Nanobubbles around plasmonic nanoparticles: Thermodynamic analysis

Lombard

Biben²,

Mérabia³

2015

Phys. Rev. E

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We describe the dynamics of vapor nanobubbles in water, on the basis of simulations of a hydrodynamics phase-field model. This situation is relevant to recent experiments, where a water nanobubble is generated around a nanoparticle immersed in water, and heated by an intense laser pulse. We emphasize the importance of nanoscale effects in the dynamics of the nanobubble. We first analyze the evolution of the temperature inside the bubble. We show that the temperature drops by hundredths of kelvins in a few picoseconds, just after nanobubble formation. This is the result of the huge drop of the thermal boundary conductance between the nanoparticle and the fluid accompanying vaporization. Subsequently, the temperature inside the vapor is almost homogeneous and the temperature gradient is concentrated in the liquid, whose thermodynamic state locally follows the saturation line. We discuss also the evolution of the pressure inside the vapor nanobubble. We show that nanobubble generation is accompanied by a pressure wave propagating in the liquid at a velocity close to the liquid speed of sound. The internal pressure inside the vapor just after its formation largely exceeds Laplace pressure and quickly relaxes as a result of the damping generated by the viscous forces. All these considerations shed light on the thermodynamics of the nanobubbles generated experimentally.

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Remarkable Reduction of Interfacial Thermal Resistance in Nanophononic Heterostructures

Ren

Liu

Chen

et al. 2020

Adv Funct Materials

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This work investigates interfacial thermal transport in phononic-mismatched heterostructures that consists of pristine black phosphorene and its phononic crystal. It is found that the presence of the sub-periodic structure results in reduced thermal conductivity in phononic crystals. As opposed to intuitive expectations, a slight temperature jump is observed at the interface of nanophononic heterostructures, which is only about 10% of that at conventional interfaces consisting of dissimilar materials. Consequently, contact thermal conductance in the nanophononic heterostructure is 10−30 times higher than that of mass-mismatched interfaces in a comparative study. Moreover, in contrast to conventional heterostructures achieved by interfacing dissimilar materials, weak temperature dependence is observed in interfacial thermal conductance, and thermal rectification is sharply suppressed. These phenomena are well explained based on lattice dynamic insights. This work not only enhances the understanding of the fundamental physics of phonons transport across interface, but also facilitates the possible spectrum of application ranges from thermoelectrics, thermal management, to thermal cloak.

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Liquid Phase Stability Under an Extreme Temperature Gradient

Cited by 9 publications

References 21 publications

Curvature induced phase stability of an intensely heated liquid

Curvature induced phase stability of an intensely heated liquid

Nanobubbles around plasmonic nanoparticles: Thermodynamic analysis

Remarkable Reduction of Interfacial Thermal Resistance in Nanophononic Heterostructures

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