Under certain conditions, the mathematical models governing the melting of nano-sized particles predict unphysical results, which suggests these models are incomplete. This thesis studies the addition of different physical effects to these models, using analytic and numerical techniques to obtain realistic and meaningful results. In particular, the mathematical "blow-up" of solutions to ill-posed Stefan problems is examined, and the regularisation of this blow-up via kinetic undercooling. Other effects such as surface tension, density change and size-dependent latent heat of fusion are also analysed
In analogy with macroscopic metal samples, crystallization of metal nanoparticles may occur apprecia...
In this paper we analyse the melting of a spherically symmetric nanoparticle, using a continuum mode...
International audienceThe fundamental physical properties of nanocrystals, such as their electronic ...
The addition of surface tension to the classical Stefan problem for melting a sphere causes the solu...
This thesis presents a mathematical modelling in nanotechnology. Many ex- periments and molecular dy...
Many physical properties of materials, especially the melting point, change when the physical size o...
The melting of a spherical or cylindrical nanoparticle is modelled as a Stefan problem by including ...
Standard mathematical models for phase change at the nanoscale involve an implicit assumption that t...
The melting of spherical nanoparticles is considered from the perspective of heat flow in a pure mat...
In this paper we formulate a Stefan problem appropriate when the thermophysical properties are disti...
The process of melting a small spherical particle is treated by setting up a two-phase Stefan proble...
The melting temperature of a nanoscaled particle is known to decrease as the curvature of the solid-...
The melting of triangular and rectangular solids is analyzed by means of new particle-type models. ...
The classical formulation for the Stefan problem at the nanoscale does not work because the melting ...
The role of thermal relaxation in nanoparticle melting is studied using a mathematical model based o...
In analogy with macroscopic metal samples, crystallization of metal nanoparticles may occur apprecia...
In this paper we analyse the melting of a spherically symmetric nanoparticle, using a continuum mode...
International audienceThe fundamental physical properties of nanocrystals, such as their electronic ...
The addition of surface tension to the classical Stefan problem for melting a sphere causes the solu...
This thesis presents a mathematical modelling in nanotechnology. Many ex- periments and molecular dy...
Many physical properties of materials, especially the melting point, change when the physical size o...
The melting of a spherical or cylindrical nanoparticle is modelled as a Stefan problem by including ...
Standard mathematical models for phase change at the nanoscale involve an implicit assumption that t...
The melting of spherical nanoparticles is considered from the perspective of heat flow in a pure mat...
In this paper we formulate a Stefan problem appropriate when the thermophysical properties are disti...
The process of melting a small spherical particle is treated by setting up a two-phase Stefan proble...
The melting temperature of a nanoscaled particle is known to decrease as the curvature of the solid-...
The melting of triangular and rectangular solids is analyzed by means of new particle-type models. ...
The classical formulation for the Stefan problem at the nanoscale does not work because the melting ...
The role of thermal relaxation in nanoparticle melting is studied using a mathematical model based o...
In analogy with macroscopic metal samples, crystallization of metal nanoparticles may occur apprecia...
In this paper we analyse the melting of a spherically symmetric nanoparticle, using a continuum mode...
International audienceThe fundamental physical properties of nanocrystals, such as their electronic ...