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Related Concept Videos

Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

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Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
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Third Law of Thermodynamics02:38

Third Law of Thermodynamics

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A pure, perfectly crystalline solid possessing no kinetic energy (that is, at a temperature of absolute zero, 0 K) may be described by a single microstate, as its purity, perfect crystallinity,and complete lack of motion means there is but one possible location for each identical atom or molecule comprising the crystal (W = 1). According to the Boltzmann equation, the entropy of this system is zero.
21.0K
Thermodynamic Systems01:06

Thermodynamic Systems

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A thermodynamic system is a set of objects whose thermodynamic properties are of interest. The system is considered to be embedded in its surroundings or the environment. The system and its environment can exchange heat and do work on each other through a boundary that separates them. However, the immediate surroundings of the system interact with it directly and therefore have a much stronger influence on its behavior and properties.
Consider an example of  tea boiling in a kettle. The...
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Zeroth Law of Thermodynamics01:14

Zeroth Law of Thermodynamics

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Experimentally, if object A is in equilibrium with object B, and object B is in equilibrium with object C, then object A is in equilibrium with object C. That statement of transitivity is called the "zeroth law of thermodynamics." For example, a cold metal block and a hot metal block are both placed on a metal plate at room temperature. Eventually, the cold block and the plate will be in thermal equilibrium. In addition, the hot block and the plate will be in thermal equilibrium.
6.4K
Phase Transitions02:31

Phase Transitions

21.8K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
21.8K
Phase Transitions: Sublimation and Deposition02:33

Phase Transitions: Sublimation and Deposition

19.1K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
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Updated: Nov 27, 2025

Characterization of Thermal Transport in One-dimensional Solid Materials
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Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

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Thermodynamics at Solid-Liquid Interfaces.

Michael Frank1, Dimitris Drikakis1

  • 1Department of Mechanical Aerospace and Engineering, University of Strathclyde, 75 Montrose, Glasgow G11UX, UK.

Entropy (Basel, Switzerland)
|December 3, 2020
PubMed
Summary
This summary is machine-generated.

Stronger solid-liquid interactions enhance thermal conductivity at interfaces. This study reveals how solid-liquid affinity impacts heat transfer in confined liquids, crucial for material science applications.

Keywords:
Green–Kuboconfinementnanofluidicsphononsthermal conductivity

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Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
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Area of Science:

  • Thermodynamics
  • Materials Science
  • Computational Physics

Background:

  • Heat transfer at solid-liquid interfaces is complex due to variations in liquid properties near surfaces.
  • Understanding interfacial thermal conductivity is vital for designing efficient thermal management systems.

Purpose of the Study:

  • To investigate the effect of solid-liquid interaction strength on interfacial thermal conductivity.
  • To elucidate the relationship between material properties and heat transfer at solid-liquid interfaces.

Main Methods:

  • Utilized Molecular Dynamics (MD) simulations.
  • Modeled liquid argon confined between two parallel solid walls with a separation of 6.58 molecular diameters.
  • Analyzed the component of thermal conductivity parallel to the solid surface.

Main Results:

  • Interfacial thermal conductivity shows a direct correlation with the strength of the solid-liquid interaction.
  • Increased affinity between the solid and liquid phases leads to higher thermal conductivity parallel to the interface.
  • The confinement distance of 6.58 σ was maintained throughout the simulations.

Conclusions:

  • The affinity between solid and liquid materials is a key factor governing heat transfer at interfaces.
  • Molecular Dynamics simulations provide valuable insights into nanoscale thermal transport phenomena.
  • Findings can inform the development of materials with tailored thermal properties for specific applications.