A5023841508- Laser Applications in Dentistry and Medicine
- Bone Tissue Engineering Materials
- Laser Material Processing Techniques
- Dental materials and restorations
- Dental Implant Techniques and Outcomes
- 3D Printing in Biomedical Research
- Additive Manufacturing and 3D Printing Technologies
- Cellular Mechanics and Interactions
- Bone fractures and treatments
- Optical Coherence Tomography Applications
- Additive Manufacturing Materials and Processes
- Tendon Structure and Treatment
- Tissue Engineering and Regenerative Medicine
- Spaceflight effects on biology
- Bone and Joint Diseases
- Coronary Interventions and Diagnostics
- Planarian Biology and Electrostimulation
- Surface Roughness and Optical Measurements
- Adhesion, Friction, and Surface Interactions
- Advanced Sensor and Energy Harvesting Materials
- Corneal Surgery and Treatments
- Collagen: Extraction and Characterization
- Surface Modification and Superhydrophobicity
- Ocular and Laser Science Research
- Ocular Surface and Contact Lens
Laboratoire de Tribologie et Dynamique des Systèmes
2012-2024
École Nationale d'Ingénieurs de Saint-Étienne
2012-2024
Centre National de la Recherche Scientifique
2012-2024
École Nationale des Travaux Publics de l'État
2023-2024
Université Claude Bernard Lyon 1
2011-2024
École Centrale de Lyon
2022-2024
Inserm
2009-2011
Université Jean Monnet
2011
Surface improvement of implants is essential for achieving a fast osseo-integration. Technically, the creation precise pattern on titanium alloy surface challenging. Here, femtosecond laser was chosen as an innovative technology texturing with accuracy nano-micro topography. By adjusting parameters, three biomimetic textures were fabricated surface: micropits nano-ripples in pits, around and texture only nano-ripples. Mesenchymal stem cells (MSCs, C3H10T1/2) grown these surfaces displayed...
Abstract The femtosecond laser processing enabled the structuring of six types surfaces on titanium‐6aluminium‐4vanadium (Ti‐6Al‐4V) plates. obtained hierarchical features consisted a combination microgrooves and oriented nanostructures. By adjusting beam properties such as polarization, width (20 or 60 μm) orientation nanostructures (parallel perpendicular to microgrooves) can be precisely controlled. Mesenchymal stem cells (MSCs) grown these structured produced cytoplasmic extensions with...
Femtosecond laser texturing is a promising surface functionalization technology to improve the integration and durability of dental orthopedic implants. Four different topographies were obtained on titanium-6aluminum-4vanadium plates by varying processing parameters strategies: surfaces presenting nanostructures such as laser-induced periodic structures (LIPSS) 'spikes', associated or not with more complex multiscale geometries combining micro-pits, stretches polished areas. After...
Ultrashort pulse lasers have significant advantages over conventional continuous wave and long for the texturing of metallic surfaces, especially nanoscale surface structure patterning. Furthermore, ultrafast laser beam polarization allows precise control spatial alignment nanotextures imprinted on titanium-based implant surfaces. In this article, we report biological effect human mesenchymal stem cell differentiation. We created, polished titanium-6aluminum-4vanadium (Ti-6Al-4V) plates, a...
The skin, the outermost organ of human body, is vital for sensing and responding to stimuli through mechanotransduction. It constantly exposed mechanical stress. Consequently, various therapies, including compression, massage, microneedling, have become routine practices skin healing regeneration. However, these traditional methods require direct contact, restricting their applicability. To address this constraint, we developed shear wave stimulation (SWS), a contactless technique....
Additive manufacturing (AM) is becoming increasingly important in the orthopedic and dental sectors thanks to two major advantages: possibility of custom integration complex structures. However, at smaller scales, surface conditions AM products are not mastered. Numerous non-fused powder particles give rise roughness values (Sa) greater than 10 μm, thus limiting biomedical applications since of, e.g., metal implants plays a role quality rate osseointegration. In this study, an innovative...
Corneal lamellar cutting with a blade or femtosecond laser (FSL) is commonly used during refractive surgery and corneal grafts. Surface roughness of the plane influences postoperative visual acuity but difficult to assess reliably. For first time, we compared chromatic confocal microscopy (CCM) scanning electron microscopy, atomic force (AFM) focus-variation (FVM) characterize surfaces variable after FSL cutting. The small area allowed by AFM hinders conclusive analysis, especially irregular...
Abstract Dental implant failure is primarily due to peri-implantitis, a consequence of bacterial biofilm formation. Bacterial adhesion strongly linked micro-/nano-topographies surface; thus an assessment surface texture parameters essential understand adhesion. In this study, mirror polished titanium samples (Ti6Al4V) were irradiated with femtosecond laser (fs-L) at wavelength 1030 nm (infrared) variable (laser beam polarization, number, spacing and organization the impacts). Images 3-D...
Abstract Titanium alloys are widely used in bio-medical applications for their excellent bio-compatibility and superior mechanical strength. On the other hand, femtosecond laser processing is a robust versatile industrial method surface functionalization. In this work, laser-induced periodic structures (LIPSS) on titanium alloy (Ti6Al4V) using different wavelengths of 1030 nm (IR), 515 (Green) 257 (UV) were created wettability (physical parameter correlated with cell adhesion) was studied,...
The consequences of misadaptation when suddenly exposed to bright light can by minimised gradually darkening (photochromic) glasses and this permits better vision. However, the reaction time such is order a few seconds which slow enough cause visual discomfort lighting changes rapidly. current invention presents an eye device with fast response time, designed proportionately filter electromagnetic radiation. This system, consisting photo-sensitive sensor, electronic circuit two liquid...
Exposure to mechanical stimuli such as pressure and stretching prompts the skin undergo physiological adaptations accommodate distribute applied forces, a process known mechanotransduction. Mechanotherapy, which leverages mechanotransduction, shows significant promise across various medical disciplines. Traditional methods, massage compression therapy, effectively promote healing by utilizing this mechanism, although they require direct contact. This study introduces novel contactless...
Femtosecond laser texturing is a promising surface functionalization technology to improve the integration and durability of dental orthopedic implants. Four different topographies were obtained on Titanium-6Aluminum-4Vanadium plates by varying processing parameters strategies: surfaces presenting nanostructures such as Laser-Induced Periodic Surface Structures (LIPSS) 'spikes', associated or not with more complex multiscale geometries combining micro-pits, stretches polished areas. After...