Projekt

Multi-scale 3D phase-field modelling of ferroelectric domain dynamics

Udbyder

Vejleder

Sted

København og omegn

Ferroelectric materials are an unsung hero of modern technology; their ability to store charge and convert between electrical and mechanical work (i.e. piezoelectricity) makes them key to many technologies from high-speed digital memory to ultra-precise actuators. But regardless of their application, the final properties of the ferroelectric ultimately depends on the arrangement of the electric domains (regions of parallel electrical polarization), and their subsequent dynamics when subjected to stresses and electric fields during use. The challenge is understanding the domain wall dynamics, which involves complex 3D interactions over several length scales and cannot be accurately modelled using atomic-scale simulation tools.

The aim of this project is to model the collective dynamics of ferroelectric domain walls using a different approach: phase-field modelling. This type of model uses a thermodynamic description of the material to model the local response which, when implemented into a finite-element framework, can model the global response as well. The project will develop a robust framework for phase-field modelling using the COMSOL finite element package. This will be a significant step forward in terms of flexibility and versatility for phase-field modelling, and will enable studies of domain dynamics under complex boundary conditions, such as in porous ferroelectrics for ultrasound applications and defect-containing materials for digital memories.

The project will be carried out in the groups of Hugh Simons (NEXMAP) and Henrik Bruus (FLUIDS), and would suit a student with an interest in mathematics, modelling and solid state physics
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Kontakt

Virksomhed/organisation

DTU Fysik

Navn

Hugh Simons

Stilling

Adjunkt

Mail

husimo@fysik.dtu.dk

Vejleder-info

Bachelor i Fysik og Nanoteknologi

Vejleder

Hugh Simons

Medvejledere

Henrik Bruus

Type

Bachelorprojekt, Kandidatspeciale

Kandidatuddannelsen i Materiale- og Procesteknologi

Vejleder

Hugh Simons

Medvejledere

Henrik Bruus

Type

Bachelorprojekt, Kandidatspeciale

Kandidatuddannelsen i Fysik og Nanoteknologi

Vejleder

Hugh Simons

Medvejledere

Henrik Bruus

Type

Bachelorprojekt, Kandidatspeciale

OM DTU

DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 10.000 studerende uddanner sig her til fremtiden, og 5.700 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

Find os her

Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby


45 25 25 25

dtu@dtu.dk

CVR-nr. 30 06 09 46

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