Ante versus post-functionalization to control surface structures with superhydrophobic and superoleophobic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (78) ◽  
pp. 63945-63951 ◽  
Author(s):  
Guilhem Godeau ◽  
Thierry Darmanin ◽  
Frédéric Guittard
Keyword(s):  
Surface Modification ◽  
Surface Structures ◽  
Control Surface ◽  
Post Functionalization

Here, we report the first use of the Staudinger–Vilarrasa reaction with perfluorinated surface modification.

scholarly journals Titanium surface modification using femtosecond laser with 1013–1015 W/cm2 intensity in vacuum

2012 ◽  
Vol 31 (1) ◽  
pp. 29-36 ◽  
Author(s):  
M. Trtica ◽  
D. Batani ◽  
R. Redaelli ◽  
J. Limpouch ◽  
V. Kmetik ◽  
...  
Keyword(s):  
Surface Modification ◽  
Femtosecond Laser ◽  
Titanium Surface ◽  
Femtosecond Lasers ◽  
Single Pulse ◽  
Surface Structures ◽  
Pulse Regime ◽  
Periodic Surface ◽  
Reduced Intensity ◽  
Surface Changes

AbstractThe response of titanium surface irradiated with high intensity (1013 – 1015 W/cm2) Ti:sapphire laser was studied in vacuum. Most of the reported investigations were conducted with nano- to femtosecond lasers in gas atmospheres while the studies of titanium surface interacting with femtosecond laser in vacuum are scarce. The laser employed in our experiment was operating at 800 nm wavelength and pulse duration of 60 fs in single pulse regime. The observed surface changes and phenomena are (1) creation of craters, (2) formation of periodic surface structures at the reduced intensity, and (3) occurrence of plasma in front the target. Since microstructuring of titanium is very interesting in many areas (industry, medicine), it can be concluded from this study that the reported laser intensities can effectively be applied for micromachining of the titanium surface (increasing the roughness, formation of parallel periodic surface structures etc.).

scholarly journals Bioinspired and Post-Functionalized 3D-Printed Surfaces with Parahydrophobic Properties

Biomimetics ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 71
Author(s):  
Léna Ciffréo ◽  
Claire Marchand ◽  
Caroline R. Szczepanski ◽  
Marie-Gabrielle Medici ◽  
Guilhem Godeau
Keyword(s):  
Three Dimensional ◽  
Control Surface ◽  
Water Harvesting ◽  
Water Access ◽  
New Approach ◽  
Significant Research ◽  
Dimensional Shape ◽  
3D Printed ◽  
Three Dimensional Shape ◽  
Post Functionalization

Desertification is a growing risk for humanity. Studies show that water access will be the leading cause of massive migration in the future. For this reason, significant research efforts are devoted to identifying new sources of water. Among this work, one of the more interesting strategies takes advantage of atmospheric non-liquid water using water harvesting. Various strategies exist to harvest water, but many suffer from low yield. In this work, we take inspiration from a Mexican plant (Echeveria pulvinate) to prepare a material suitable for future water harvesting applications. Observation of E. pulvinate reveals that parahydrophobic properties are favorable for water harvesting. To mimic these properties, we leveraged a combination of 3D printing and post-functionalization to control surface wettability and obtain parahydrophobic properties. The prepared surfaces were investigated using IR and SEM. The surface roughness and wettability were also investigated to completely describe the elaborated surfaces and strongly hydrophobic surfaces with parahydrophobic properties are reported. This new approach offers a powerful platform to develop parahydrophobic features with desired three-dimensional shape.

Evaluation of Surface Modification of PA 2200 Parts Made by Selective Laser Sintering Process

2018 ◽  
Vol 69 (4) ◽  
pp. 886-889
Author(s):  
Cristina Stefana Miron Borzan ◽  
Marioara Moldovan ◽  
Vlad Bocanet
Keyword(s):  
Surface Roughness ◽  
Surface Modification ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Cellular Adhesion ◽  
Surface Structures ◽  
Control Group ◽  
Sintering Process ◽  
Sem Images ◽  
Significant Difference

Cellular adhesion on surface structures from PA 2200 made through Selective Laser Sintering (SLS) process can be improved by modifying the parts surface. In this paper, different methods for surface modification are presented. The PA 2200 samples were immersed in six different solvents. SEM images and surface roughness tests were performed in order to evaluate the surface modification both for the control group and for the tested groups. The obtained results clearly show that there is a significant difference between the roughness of the control (untreated) surface and each of the treated surfaces. Modifying by immersion, of the PA 2200 structures produced by Selective Laser Sintering process, brings original approaches concerning the use of those procedures in the increase of the surfaces quality.

scholarly journals Hybrid technology used for the production of individual medical implants from titanium alloys

Mechanik ◽  
2018 ◽  
Vol 91 (8-9) ◽  
pp. 775-777
Author(s):  
Andrzej Styczyński ◽  
Kasper Fogel ◽  
Włodzimierz Kołodziej ◽  
Jarosław Wróblewski
Keyword(s):  
Surface Modification ◽  
Titanium Alloys ◽  
Smart Growth ◽  
Laser Surface ◽  
Surface Structures ◽  
Medical Implants ◽  
Laser Surface Modification ◽  
Hybrid Technology ◽  
Laser Head

The effect of R&D works covered by the project entitled „Designing the surface structures of individual medical implants, produced in hybrid technology using a laser head”, implemented as part of the Smart Growth Operational Programme No. POIR.01.01.01. The technology of waste machning of implants from medical titanium alloys has been improved and the technology of laser surface modification of the implant has been developed.

Bifunctional redox tagging of carbon nanoparticles

Nanoscale ◽  
2015 ◽  
Vol 7 (5) ◽  
pp. 2069-2075 ◽  
Author(s):  
Jeffrey Poon ◽  
Christopher Batchelor-McAuley ◽  
Kristina Tschulik ◽  
Robert G. Palgrave ◽  
Richard G. Compton
Keyword(s):  
Surface Modification ◽  
Carbon Nanoparticles ◽  
Surface Structures ◽  
Layer Surface ◽  
Carbon Nanoparticle ◽  
Modification Method ◽  
Complex Chemistry ◽  
Almost All

Despite extensive work on the controlled surface modification of carbon with redox moieties, to date almost all available methodologies involve complex chemistry and are prone to the formation of polymerized multi-layer surface structures. The modification method in this paper provides a generic approach to monolayer modifications of carbon and carbon nanoparticle surfaces.

scholarly journals Effects of Electrolyte on Laser-Induced Periodic Surface Structures with Picosecond Laser Pulses

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 327
Author(s):  
Shuhei Kodama ◽  
Wataru Natsu
Keyword(s):  
Surface Composition ◽  
Nitrate Solution ◽  
Electrochemical Machining ◽  
Pulsed Laser ◽  
Picosecond Laser ◽  
Surface Structures ◽  
304 Stainless Steel ◽  
Control Surface ◽  
Copper Sulfate Solution ◽  
Periodic Surface

Short-pulsed laser-induced periodic surface structures (SPLIPSSs) have the possibility to control tribology, wettability and biocompatibility. Nevertheless, the optimal structure depends on each functionality, which has not been clarified. The hybrid process with a short-pulsed laser and electrochemical machining (SPLECM) is, then, proposed to fabricate micro/nano hybrid structures and to modify the surface composition for providing high functionalities with material surfaces. Electrochemical machining is a well-established micro-elution and deposition method with noncontact between a workpiece and a tool. In this study, the effects of electrolytes on SPLIPSSs were investigated experimentally by the picosecond laser irradiation on 304 stainless steel substrates in various electrolytes. The geometry of SPLIPSSs depended on the types and the concentration of electrolytes. In the case of copper nitrate solution and copper sulfate solution, LIPSSs and spheroidization of copper were obtained. This study demonstrated the possibility of SPLECM to fabricate micro/nano structures and to control surface composition.

Surface Modification of Zirconia (Y-TZP) Ceramics Induced by Pulsed Laser Machining

2015 ◽  
Vol 752-753 ◽  
pp. 481-484 ◽  
Author(s):  
Valery V. Kuzin ◽  
Stanislav Grigoriev ◽  
Mike Fedorov ◽  
Mike Portnoy ◽  
Victor Ermolin
Keyword(s):  
Surface Modification ◽  
Tetragonal Zirconia ◽  
Pulsed Laser ◽  
Scanning Speed ◽  
Control Surface ◽  
Zirconia Ceramic ◽  
Laser Machining ◽  
Attractive Alternative ◽  
Modification Process ◽  
Tetragonal Zirconia Polycrystal

Technological features of pulsed laser machining of yttriastabilized tetragonal zirconia polycrystal (Y-TZP) were studied. The connection between the laser power, scanning speed, laser beam steps and surface state of zirconia ceramic was established. The results of the research showed that pulsed laser machining of this material is an effective tool to control surface modification process and presents an attractive alternative to conventional techniques.

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