Multi-scale modeling of ultrafast laser-driven thermofluid flows for nanostructure reshaping

id="offer-description" class="ecl-u-type-heading-2 ecl-u-mt-none ecl-u-mb-l">Offer Description Objectives. Within ULTraFlow project (Optimizing Ultrafast Laser-driven Thermofluid Flow for nanofabrication of arbitrary 3D curved nanostructures), PhD fellow will be responsible for developing an efficient computational tool to predict ultrashort laser-induced modifications in surface nanostructures and to identify governing mechanisms at sub-100 nm scales. The project will introduce a new methodology that couples ultrafast near-field absorption, heat transfer and phase transitions, addressing light, heat and energy confinement at the nanoscale, in all-in-one unified multi-physical and multi-scale approach. As a final product, ULTraFlow will deliver novel strategies to control and optimize nanofabrication processes beyond the conventional surface nanostructures, towards structures with irregular 3D nanoscale curvature, that are urgently needed as components for multi-functional metasurfaces, particularly difficult to fabricate or to adjust with conventional methods. Context. In the era of extreme miniaturization, the continued progress of nanotechnologies requires fabrication approaches capable of controlling matter at ever smaller spatial and temporal scales while remaining scalable and economically viable. Ultrashort lasers, having pulse duration shorter than characteristic scales for heat transport and fluid flow (< 10 picoseconds), can act as an efficient operational and contr