A5062847613- Laser-induced spectroscopy and plasma
- Laser Material Processing Techniques
- Surface Modification and Superhydrophobicity
- Laser-Ablation Synthesis of Nanoparticles
- Laser-Matter Interactions and Applications
- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Advanced machining processes and optimization
- Advanced materials and composites
- Advanced Machining and Optimization Techniques
- Electrohydrodynamics and Fluid Dynamics
- Adhesion, Friction, and Surface Interactions
- Icing and De-icing Technologies
- Fullerene Chemistry and Applications
- Aerogels and thermal insulation
- Nanoparticles: synthesis and applications
- Combustion and flame dynamics
- Atmospheric aerosols and clouds
- Random lasers and scattering media
- Quantum Dots Synthesis And Properties
- Photoreceptor and optogenetics research
- Spectroscopy and Quantum Chemical Studies
- Tunneling and Rock Mechanics
- Nonlinear Optical Materials Studies
- Protein Interaction Studies and Fluorescence Analysis
Luleå University of Technology
2023-2024
University of Coimbra
2023-2024
Kadi Sarva Vishwavidyalaya
2024
American University of Sharjah
2019-2022
Institute of Space Technology
2016
Laser Zentrum Hannover
2008
In this study, the tribological behaviour of different Diamond-like-Carbon (DLC) coatings sliding against titanium alloy (Ti6Al4V) was analysed in a pin-on-disc tribometer at applied loads to study effectiveness tool alloys machining. Three DLC were deposited on cemented carbide substrate using HiPIMS (DLC-Ar, DLC-Ne) and arc (DLC-Bn) deposition techniques. A detailed analysis wear track countersurfaces performed following tribotest develop understanding about mechanism associated variation...
Femtosecond (FS) laser-induced surface structuring is a robust, maskless, non-contact, and single-step process for producing micro- nanoscale structures on material’s surface, which remarkably alters the optical, chemical, wetting, tribological properties of that material. Wettability control, in particular, high significance various applications, including self-cleaning, anti-fouling, anti-icing, anti-corrosion, and, recently, oil–water separation. Due to growing energy demands rapid...
Oil-water separation using super-wetting and the selective permeability of membranes for oil or water has great ecological economic significance. We report on transition wettability response, from superhydrophilic underwater-superoleophobic to superhydrophobic-superoleophilic state, by nanostructuring stainless steel copper meshes ultrashort femtosecond laser pulses. Our approach is environment-friendly, chemical free, efficient as it exploits benefit aging processed samples in a high vacuum...
AbstractThe application of diamond-like carbon (DLC) coatings in dry machining difficult-to-machine materials has been gaining popularity due to high inertness, low coefficient friction (COF), and hardness these coatings. Although the effect surface roughness on tribological properties DLC is paramount importance, usually it overlooked performance analysis was accomplished generally highly polished substrates. The generation surfaces a time-consuming, labor-intensive process and, most cases,...
Ultrafast light-induced molecular reactions on aerosolized nanoparticles may elucidate early steps in the photoactivity of with potential impact fields ranging from chemistry and medicine to climate science. In situ morphology discrimination for nanoparticle streams when measuring reaction yields is crucial, but lacking. Here, we experimentally demonstrate, using nanoscopy technique, that proton momenta deprotonation induced by intense femtosecond pulses exhibit clear, distinguishable...
Molecular adsorbate reactions on nanoparticles play a fundamental role in areas such as nano-photocatalysis, atmospheric, and astrochemistry. They can be induced, enhanced, controlled by field localization enhancement the nanoparticle surface. In particular, ability to perform highly near-field-mediated is key deepening our understanding of surface photoactivity nanosystems. Here, using reaction nanoscopy, we experimentally demonstrate all-optical nanoscopic control yields tailoring near...
The wettability behavior of materials is the subject numerous scientific investigations due to its significance and relevance wide range applications. Here we present comparative analysis properties glass coated by carbon-based nanostructures. Glass surfaces were with carbon nanotubes, nanodiamonds, fullerenes, graphene drop casting method. These coatings displayed a notable increase in contact angle (CA) water beads up superhydrophobic limit, except for nanodiamonds coating, which depicted...
The study presents results in scale-up of nanoparticle production by laser ablation ceramics liquid media and gives a better understanding influences process parameters on the productivity. Results presented this work clearly reveal that fluence or pulse energy, overlap target surface repetition rate are key determining material removal generation efficiency. investigations show significant increase several factors Beside we observed specific is required for Investigations interpulse...
Abstract The natural essence, biocompatibility, and pleiotropic functioning of plant polyphenols have swiftly emerged as integrated assets for biomedical environmental applications resources capped ZnO NPs. Simultaneous reducing cum capping abilities, synergistic edible prospects, precursor‐plant extract stoichiometry‐driven robust size‐shape modulation are the major encouragements being explored increasing recent interest in biomedical‐environmental extracts (PEs) structure‐function...
We analyze the role of surrounding gas and aging in ambient air wettability behavior laser-processed stainless steel meshes. Laser texturing meshes was carried out presence different gases (N2, O2, CO2, Ar, SF6) atmospheric under vacuum conditions. The influence each on evolution properties after is analyzed. effects low-pressure allowed transforming initial superhydrophilic characteristics laser-structured to an almost superhydrophobic state.
We analyze the role of processing atmosphere and influence long term ageing (up to 30 days) in ambient air on wettability laser-processed stainless steel meshes. The effect low-pressure vacuum transform initial superhydrophilic characteristics freshly laser structured mesh near superhydrophobic state. Laser texturing meshes was carried out presence different gas environmental conditions: N 2 , O CO Ar, SF 6 atmospheric under conditions. each time evolution properties after is analyzed.