Wear of Bioinspired Surfaces Textured By - Lyon, France - Laboratoire de Tribologie et Dynamique des systèmes

Description

Wear of Bioinspired Surfaces Textured by Femtosecond Laser and Impact on wettability and biological Functionality:

• Réf

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ABG-119767

• Sujet de Thèse 29/01/2024
• Contrat doctoral
• Laboratoire de Tribologie et Dynamique des systèmes
• Lieu de travail
• Saint Etienne / Lyon
• Auvergne-RhôneAlpes
• France
• Intitulé du sujet
• Wear of Bioinspired Surfaces Textured by Femtosecond Laser and Impact on wettability and biological Functionality
• Champs scientifiques
• Sciences de l'ingénieur
• Biologie
• Matériaux
• Mots clés surfaces, wear, laser, cellular biology, wettability
  Description du sujet:

Scientific context:

Recently, discoveries in the natural world have sparked great interest in the use of bio-inspired topographies, to create multi-scale functional surfaces (example of the lotus leaf).

Femtosecond laser texturing stands out as an advanced surface treatment technique that addresses this requirement. By utilizing ultrashort laser pulses, it modifies the surface topography, achieving simultaneously both micro and nanoscales with precise control.


Question asked and objective:

The generated
multiscale textures present a potential fragility, which the scientific community has not yet addressed. The problem of the
wear of these surfaces, and its potential
functional implications, requires further study.

The objective of the thesis is to study the
wear behavior of textured titanium alloy surfaces, then to evaluate its impact on functionality (wettability and cellular/bacterial adhesion).

The doctoral student will study the
correlations between wear and loss of functionality, using advanced analysis of surface properties (multi-scale topographic analyses, nano-hardness).

The thesis will be structured around 4 work packages:

WP 1:
Surface texturing by femtosecond laser and surface characterization

WP 2:
Evaluations of wear of textured surfaces

WP 3:
Evaluation of the loss of functionalities (wettability, biological performance)


WP 4:
Process/surface properties/wear/functionality correlations


Prise de fonction:

• 02/09/2024
  Nature du financement:
• Contrat doctoral

Précisions sur le financement:

• Doctoral school competition (May 13 to 17)
  Présentation établissement et labo d'accueil:
• Laboratoire de Tribologie et Dynamique des systèmes

The PhD student will work in a
multidisciplinary environment, interacting with the Laboratory of Tribology and Systems Dynamics (LTDS) (Laser texturation, surface characterization) and SAINBIOSE Laboratory (cellular biology). The PhD student will be located on Saint-Etienne campus of LTDS/ECL/ENISE with current missions on Lyon campus.


Site web:


Research profile & skills (highly desirable):

• Master Degree (or equivalent)
• Be someone able to and enjoy to solve problems and pushing research to achieve results
• High degree of responsibility and independence, while collaborating with your team and lab mates, and other laboratory staff.
• Good management skills, good presentation skills, excellent written and oral English level. 15/04/2024