title: Numerical modeling of the subwavelength phase-change recording using an apertureless scanning near-field optical microscope.
abstract: The electromagnetic field enhancement (FE) at the end of the probe of an Apertureless Scanning Near-field Optical Microscope (ASNOM) is used to write nanometric dots in a phase-change medium. The FE acts as a heat source that allows the transition from amorphous to crystalline phase in a Ge2Sb2Te5 layer. Through the 2D Finite Element Method (FEM) we predict the size of the dot as a function of both the illumination duration and the incoming power density. Numerical results are found to be in good agreement with preliminary experimental data.
authors.forename: Thomas
authors.initials: T
authors.lastname: Grosges
authors.forename: Stéphane
authors.initials: S
authors.lastname: Petit
authors.forename: Dominique
authors.initials: D
authors.lastname: Barchiesi
authors.forename: Sylvain
authors.initials: S
authors.lastname: Hudlet