Log in

Relevant bibliographies by topics / Laser structuration / Journal articles

To see the other types of publications on this topic, follow the link: Laser structuration.

Journal articles on the topic 'Laser structuration'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 22 journal articles for your research on the topic 'Laser structuration.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Hallo, L., C. Mézel, F. Guillemot, et al. "Laser-matter structuration of optical and biological materials." Applied Surface Science 258, no. 23 (2012): 9263–69. http://dx.doi.org/10.1016/j.apsusc.2011.11.117.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Lazare, S., M. Bolle, A. Cros, and L. Bellard. "Periodic structuration of polymer surfaces with the excimer laser radiation." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 105, no. 1-4 (1995): 159–63. http://dx.doi.org/10.1016/0168-583x(95)00630-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Ocaña, José L., Daniel Huerta-Murillo, Andrés Fabián Lasagni, et al. "Modification of Ti6Al4V surface properties by combined DLW-DLIP hierarchical micro-nano structuring." Advanced Optical Technologies 9, no. 3 (2020): 121–30. http://dx.doi.org/10.1515/aot-2019-0071.

Full text

Abstract:

AbstractThe use of pulsed laser irradiation techniques has proven to be a clearly effective procedure for the achievement of surface properties modification via micro-/nano-structuration, different conceptual approaches having been the subject of research and extensively reported in the literature. Completing the broad spectrum of applications developed mostly involving the generation of structured surfaces (particularly of metallic materials) with specific contact, friction and wear functionalities, the application of laser sources to the surface structuration of metal surfaces for the modification of their wetability and corrosion resistance properties is considered. The particular problems found for the generation of the appropriate surface microstructure able to replicate the hydrophobic behaviour of some live structures present in nature, their long term stability and their amenability to macroscopic scale are discussed along with innovative methods to generate the required hierarchical micro-/nano-structures by a combination of the DLW and DLIP techniques.

APA, Harvard, Vancouver, ISO, and other styles

4

Boucaud, Jean-Marc, Folly-Eli Ayi-Yovo, Quentin Hivin, et al. "Cost Effective Laser Structuration of Optical Waveguides on Thin Glass Interposer." Journal of Lightwave Technology 35, no. 20 (2017): 4445–50. http://dx.doi.org/10.1109/jlt.2017.2732461.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Grossard, L., A. Desfarges-Berthelemot, B. Colombeau, V. Kermène, M. Vampouille, and C. Froehly. "Structuration de l'émission d'un laser YAG/Nd3+par diffractions intra-cavité." Le Journal de Physique IV 10, PR8 (2000): Pr8–177. http://dx.doi.org/10.1051/jp4:2000845.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Museur, Luc, Jean-Pierre Petitet, Jean-Pierre Michel, et al. "Picosecond laser structuration under high pressures: Observation of boron nitride nanorods." Journal of Applied Physics 104, no. 9 (2008): 093504. http://dx.doi.org/10.1063/1.3000457.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Kamanina, Natalia, Svetlana Likhomanova, and Pavel Kuzhakov. "Advantages of the Surface Structuration of KBr Materials for Spectrometry and Sensors." Sensors 18, no. 9 (2018): 3013. http://dx.doi.org/10.3390/s18093013.

Full text

Abstract:

A potassium bromide (KBr) material, which has been widely used as the key element in Fourier spectrometers and as the output window of the IR-lasers, was studied via applying carbon nanotubes in order to modify the potassium bromide surface. The laser-oriented deposition method was used to place the carbon nanotubes at the matrix material surface in the vertical position at different electric fields varying from 100 to 600 V × cm−1. The main idea of the improvement of the spectral properties of the potassium bromide structure is connected with the fact that the refractive index of the carbon nanotubes is substantially less than the refractive index of the studied material, and the small diameter of the carbon nanotubes allows one to embed these nano-objects in the voids of the lattice of the model matrix systems. Moreover, the mechanical characteristics and wetting features of potassium bromide structures have been investigated under the condition mentioned above. Analytical and quantum-chemical simulations have supported the experimental results.

APA, Harvard, Vancouver, ISO, and other styles

8

Santos, Andreia dos, Nuno Pinela, Pedro Alves, et al. "E-Skin Pressure Sensors Made by Laser Engraved PDMS Molds." Proceedings 2, no. 13 (2018): 1039. http://dx.doi.org/10.3390/proceedings2131039.

Full text

Abstract:

This work describes the production of electronic-skin (e-skin) piezoresistive sensors, which micro-structuration is performed using laser engraved molds. With this fabrication approach, low-cost sensors are easily produced with a tailored performance. Sensors with micro-cones and a high sensitivity of −1 kPa−1 under 600 Pa are more adequate for the blood pressure wave detection, while sensors micro-structured with semi-spheres and a maximum sensitivity of −6 × 10−3 kPa−1 in a large pressure range (1.6 kPa to 100 kPa) are more suitable for robotics and functional prosthesis.

APA, Harvard, Vancouver, ISO, and other styles

9

Merdji, Hamed, and Willem Boutu. "Optique attoseconde et électronique pétahertz dans les semiconducteurs." Photoniques, no. 109 (July 2021): 52–56. http://dx.doi.org/10.1051/photon/202110952.

Full text

Abstract:

La génération d’harmoniques laser d’ordre élevé dans les cristaux semiconducteurs est une nouvelle source de rayonnement ultra-bref (femtoseconde à attoseconde) cohérent et de courte longueur d’onde (de l’ordre de quelques dizaines de nanomètres) à très haute cadence. Outre la versatilité de cette source pour les applications, offerte notamment par les progrès en nano-structuration, l’étude du rayonnement émis permet de suivre les dynamiques électroniques ultrarapides au sein de matériaux complexes.

APA, Harvard, Vancouver, ISO, and other styles

10

Vigne, Nathan, Baptiste Chomet, Alaeddine Abbes, et al. "États originaux de la lumière par structuration 3D de l’émission D’un laser à Métasurface." Photoniques, no. 109 (July 2021): 46–50. http://dx.doi.org/10.1051/photon/202110946.

Full text

Abstract:

La génération d’états de photon cohérents puissants dans le proche-IR et THz, présentant une structuration 3D spatio-temporelle, représente un défi physique et technologique. Elle est d’intérêt pour les applications : pinces optiques, capteurs, microscopie, LIDAR, télécoms, spectroscopie… Ces états originaux sont ici générés en exploitant les nanotechnologies à semi-conducteur III-V et les lasers à cavité externe verticale intégrant une métasurface : lumière VORTEX, bi-fréquences pour le THz, ou sans mode.

APA, Harvard, Vancouver, ISO, and other styles

11

Botineau, Jean, Gérard Cheval, and Carlos Montes. "CW-pumped polarization-maintaining Brillouin fiber ring laser: I. Self-structuration of Brillouin solitons." Optics Communications 257, no. 2 (2006): 319–33. http://dx.doi.org/10.1016/j.optcom.2005.07.049.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Sola, Daniel, Stephan Milles, and Andrés F. Lasagni. "Direct Laser Interference Patterning of Diffraction Gratings in Safrofilcon-A Hydrogel: Fabrication and Hydration Assessment." Polymers 13, no. 5 (2021): 679. http://dx.doi.org/10.3390/polym13050679.

Full text

Abstract:

Refractive index modification by laser micro-structuration of diffractive optical devices in ophthalmic polymers has recently been applied for refractive correction in the fields of optics and ophthalmology. In this work, Safrofilcon-A hydrogel, used as soft contact lenses, was processed by direct laser interference patterning (DLIP) to fabricate linear periodic patterns on the surface of the samples. Periodic modulation of the surface was attained under two-beam interference by using a Q-switched laser source with emission at 263 nm and 4 ns pulse duration. Features of processed areas were studied as a function of both the interference spatial period and the laser fluence. Optical confocal microscopy used to evaluate the topography of the processed samples showed that both structured height and surface roughness increased with laser fluence. Static water contact angle (WCA) measurements were carried out with deionized water droplets on the structured areas to evaluate the hydration properties of DLIP structures. It was observed that the laser structured areas induced a delay in the hydration process. Finally, microstructural changes induced in the structured areas were assessed by confocal micro-Raman spectroscopy showing that at low laser fluences the polymer structure remained almost unaltered. In addition, Raman spectra of hydrated samples recovered the original shape of areas structured at low laser fluence.

APA, Harvard, Vancouver, ISO, and other styles

13

Halbwax, M., T. Sarnet, Ph Delaporte, et al. "Micro and nano-structuration of silicon by femtosecond laser: Application to silicon photovoltaic cells fabrication." Thin Solid Films 516, no. 20 (2008): 6791–95. http://dx.doi.org/10.1016/j.tsf.2007.12.117.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Bolle, M., and S. Lazare. "Structuration submicronique à grande échelle de surface de polymères à l'aide du rayonnement du laser à excimère." Annales de Physique 17 (June 1992): 51–52. http://dx.doi.org/10.1051/anphys/1992008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Tęczar, P., B. Majkowska-Marzec, and M. Bartmański. "The Influence of Laser Alloying of Ti13Nb13Zr on Surface Topography and Properties." Advances in Materials Science 19, no. 1 (2019): 44–56. http://dx.doi.org/10.2478/adms-2019-0004.

Full text

Abstract:

AbstractThe laser alloying is a continually developing surface treatment because of its significant and specific structuration of a surface. In particular, it is applied for Ti alloys, being now the most essential biomaterials’ group for load-bearing implants. The present research was performed on the Ti13Nb13Zr alloy subject to laser modification in order to determine the treatment effects on surface topography and its some mechanical properties like nanohardness, Young’s modulus, roughness. A pulse laser Nd:YAG was applied at three different laser pulse regimes: either 700 W, 1000 W or 1000 W treatment followed by 700 W modification at a pulse duration of 1 ms. The surface topography and morphology were examined using light microscopy and scanning electron microscopy with spectroscope of X-ray energy dispersion. The mechanical properties were determined by nanoindentation tests and surface roughness with a use of profilograph. The wettability was tested with a goniometer. The obtained results demonstrate complex behavior of the material surface: decrease in penetration distance and increase in hardness after first laser treatment, maintenance of this trend when machining using a higher laser pulse power, followed by an increase in penetration and decrease in hardness after additional laser treatment at lower power input, due to which a surface with fewer defects is obtained. The change in Young’s modulus follows the change in other mechanical properties, but not a change in roughness. Therefore, the observed hardening with the increase of the laser pulse power and then a small softening with the use of additional treatment with lower power can be attributed to some processes of remelting, diffusion and crystallization, sensitive to the previous surface state and heat energy flux. Despite that, the laser treatment always caused a significant hardening of the surface layer.

APA, Harvard, Vancouver, ISO, and other styles

16

dos Santos, Andreia, Nuno Pinela, Pedro Alves, et al. "E-Skin Bimodal Sensors for Robotics and Prosthesis Using PDMS Molds Engraved by Laser." Sensors 19, no. 4 (2019): 899. http://dx.doi.org/10.3390/s19040899.

Full text

Abstract:

Electronic skin (e-skin) is pursued as a key component in robotics and prosthesis to confer them sensing properties that mimic human skin. For pressure monitoring, a great emphasis on piezoresistive sensors was registered due to the simplicity of sensor design and readout mechanism. For higher sensitivity, films composing these sensors may be micro-structured, usually by expensive photolithography techniques or low-cost and low-customizable molds. Sensors commonly present different sensitivities in different pressure ranges, which should be avoided in robotics and prosthesis applications. The combination of pressure sensing and temperature is also relevant for the field and has room for improvement. This work proposes an alternative approach for film micro-structuration based on the production of highly customizable and low-cost molds through laser engraving. These bimodal e-skin piezoresistive and temperature sensors could achieve a stable sensitivity of −6.4 × 10−3 kPa−1 from 1.6 kPa to 100 kPa, with a very robust and reproducible performance over 27,500 cycles of objects grasping and releasing and an exceptionally high temperature coefficient of resistance (TCR) of 8.3%/°C. These results point toward the versatility and high benefit/cost ratio of the laser engraving technique to produce sensors with a suitable performance for robotics and functional prosthesis.

APA, Harvard, Vancouver, ISO, and other styles

17

Polunkin, E. V., V. S. Pyliavskyi, O. O. Gaidai, S. L. Melnykova, O. Spaska, and I. V. Matveeva. "Influence of addition of exomodified carbon nanospheres on the structuration in ethanol motor fuels." Catalysis and Petrochemistry, no. 31 (2021): 62–68. http://dx.doi.org/10.15407/kataliz2021.31.062.

Full text

Abstract:

The work is devoted to elucidation of a general mechanism of action of exomodified carbon nanospheres (CNOs – Brn nanoonions) on different physicochemical and chemmotological properties of ethanol motor fuels. The formation of supramolecular solvate groups in organic media is explained by the participation of different forces of intermolecular interaction, the main of which are polarization and orientation, as well as donor-acceptor forces of interaction of nanospheres with the environment. The concept of creation in an organic medium of solvation formations - domains, the size of which, determined by the method of photon correlation laser spectroscopy, varies from 21 to 1000 nm, depending on the chemical nature of the solvent - is proposed and substantiated. For ethanol, the size of such formations was ~ 400 nm, which significantly exceeds the size of individual particles of the additive. It is established that to improve the operational characteristics of ethanol fuel it is enough to introduce low concentrations (10-3 - 10-2 %, wt.) of synthesized brominated nanoparticles. It is shown that the change of the microheterogeneous structure of fuels affects the change of its physicochemical and operational characteristics: the dielectric constant and hydrophobicity of the medium decrease, the saturated vapor pressure increases, which improves the starting properties of the fuel; hydrophobization of the environment helps to reduce the corrosive properties of ethanol fuel per unit, as a result of which additional introduction of a corrosion inhibitor is not required; the bearing capacity of the fuel in the presence of brominated nanoparticles increases by 1.5 times compared to the base fuel with a corresponding decrease in damage to the metal surface of the friction pairs. It is the rearrangement of the secondary supramolecular structure of fuels in the presence of brominated carbon nanospheres that explains the multifunctionality of their influence on the physicochemical and chemmotological properties of ethanol motor fuels.

APA, Harvard, Vancouver, ISO, and other styles

18

Baudin, Lucie, Monika Sitko, Cédric Garion, et al. "Morphological and Chemical Characterization of Laser Treated Surface on Copper." Key Engineering Materials 813 (July 2019): 254–60. http://dx.doi.org/10.4028/www.scientific.net/kem.813.254.

Full text

Abstract:

Electron multipacting and electron cloud have been identified as being the major limiting factors for the beam quality or for the cryogenic system of high-intensity positive particles accelerators. Among conditioning operational techniques and other surface structuration techniques used to decrease the Secondary Electron Yield (SEY) of surfaces, laser surface treatment is a promising method to treat in situ and at atmospheric pressure copper surface of the vacuum chamber. Here, pulsed laser irradiation of copper in parallel lines pattern led to the local ablation and deposition of aggregates of copper particulates on the surface. Tests undertaken at CERN have shown that the modification of the surface morphology by creating roughness at different scales induces a decrease of the SEY by geometrical effects. Nevertheless, the mechanical strength and dust generation of the treated surface have not been addressed yet.In this work, a qualitative analysis of the multi-scale description of the surface morphology was carried out. Scanning Electron Microscopy (SEM), Focused Ion Beam (FIB), Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray Spectroscopy (EDS) were used to investigate morphological characterization such as size and shape of the particulates, chemical composition, metallographic structures and phase transformation on the laser-processed surface.SEM and FIB examinations showed that the surface morphology depends on the local laser energy irradiating the surface and especially, relatively to the ablation threshold. TEM analysis revealed chemical composition and crystalline configuration of the treated material and helped to identify the laser modified and oxidized areas. A variety of superficial structures were observed. Potential vulnerable structures have been identified as oxidized matter redeposited on the ablated near surface. Material continuity and composition play a major role in the mechanical integrity of the generated surface morphology. The adherence of the created structures was assessed analyzing the origin of the dust extracted after mechanical stress.

APA, Harvard, Vancouver, ISO, and other styles

19

Volant, Chloé, Alexandre Gilet, Fatima Beddiaf, et al. "Multiscale Structure of Starches Grafted with Hydrophobic Groups: A New Analytical Strategy." Molecules 25, no. 12 (2020): 2827. http://dx.doi.org/10.3390/molecules25122827.

Full text

Abstract:

Starch, an abundant and low-cost plant-based glucopolymer, has great potential to replace carbon-based polymers in various materials. In order to optimize its functional properties for bioplastics applications chemical groups need to be introduced on the free hydroxyl groups in a controlled manner, so an understanding of the resulting structure-properties relationships is therefore essential. The purpose of this work was to study the multiscale structure of highly-acetylated (degree of substitution, 0.4 < DS ≤ 3) and etherified starches by using an original combination of experimental strategies and methodologies. The molecular structure and substituents repartition were investigated by developing new sample preparation strategies for specific analysis including Asymmetrical Flow Field Flow Fractionation associated with Multiangle Laser Light Scattering, Nuclear Magnetic Resonance (NMR), Raman and Time of Flight Secondary Ion Mass spectroscopies. Molar mass decrease and specific ways of chain breakage due to modification were pointed out and are correlated to the amylose content. The amorphous structuration was revealed by solid-state NMR. This original broad analytical approach allowed for the first time a large characterization of highly-acetylated starches insoluble in aqueous solvents. This strategy, then applied to characterize etherified starches, opens the way to correlate the structure to the properties of such insoluble starch-based materials.

APA, Harvard, Vancouver, ISO, and other styles

20

Jaffres, Lionel, Alexis Labruy,ère, Vincent Couderc, et al. "Gain structuration in dual-wavelength Nd:YSAG ceramic lasers." Optics Express 20, no. 23 (2012): 25596. http://dx.doi.org/10.1364/oe.20.025596.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Provino, Laurent, Achille Monteville, David Landais, et al. "Les fibres microstructurées : 20 ans d’existence et un vaste éventail d’applications." Photoniques, no. 99 (November 2019): 40–44. http://dx.doi.org/10.1051/photon/20199940.

Full text

Abstract:

Les fibres optiques microstructurées, également appelées fibres à trous ou fibres optiques à cristal photonique sont un type récent de guides de lumières originaux et performants apparues dans le milieu des années 1990. Elles se sont depuis imposées comme une technologie incontournable de la photonique moderne. L’originalité première de ce genre de fibre a été de permettre le guidage de la lumière dans un matériau unique grâce à leur structuration périodique. Après une vingtaine d’années de recherche, la gamme possible de structures de ces fibres optiques s’est grandement étoffée, donnant lieu à plusieurs catégories de fibres microstructurées classifiées par type de mécanisme de guidage (par réflexion totale interne, par bande interdite photonique, et par couplage inhibé). Arrivées à maturité aujourd’hui, ces fibres optiques ont démontré au fil des années un potentiel d’applications extrêmement vaste et ce, dans des domaines très variés allant de la défense aux applications biophotoniques, sous la forme de capteurs optiques ou de lasers fibrés de forte puissance.

APA, Harvard, Vancouver, ISO, and other styles

22

Ocaña, Jose L., R. Jagdheesh, and J. J. García-Ballesteros. "Direct generation of superhydrophobic microstructures in metals by UV laser sources in the nanosecond regime." Advanced Optical Technologies 5, no. 1 (2016). http://dx.doi.org/10.1515/aot-2016-0002.

Full text

Abstract:

AbstractThe current availability of new advanced fiber and DPSS lasers with characteristic pulse lengths ranging from ns to fs has provided a unique frame in which the development of laser-generated microstructures has been made possible for very diverse kinds of materials and applications. At the same time, the development of the appropriate laser-processing workstations granting the appropriate precision and repeatability of the respective laser interaction processes in line with the characteristic dimension features required in the microstructured samples has definitively consolidated laser surface microstructuring as a reference domain, nowadays, unavoidable for the design and manufacturing of current use microsystem: MEMSs, fluidic devices, advanced sensors, biomedical devices and instruments, etc., are all among the most well-known developments of the micromanufacturing technology. Completing the broad spectrum of applications developed mostly involving the generation of geometrical features on a subtrate with specific functional purposes, a relatively new, emerging class of laser-microstructuring techniques is finding an important niche of application in the generation of physically structured surfaces (particularly of metallic materials) with specific contact, friction, and wear functionalities, for whose generation the concourse of different types of laser sources is being found as an appropriate tool. In this paper, the application of laser sources with emission in the UV and at ns time regime to the surface structuration of metal surfaces (specifically Al) for the modification of their wettability properties is described as an attractive application basis for the generation of self-cleaning properties of extended functional surfaces. Flat aluminum sheets of thickness 100 μm were laser machined with ultraviolet laser pulses of 30 ns with different laser parameters to optimize the process parameters. The samples produced at the optimum conditions with respect to contact angle measurement were subjected to microstructure and chemical analysis. The wetting properties were evaluated by static contact angle measurements on the laser-patterned surface. The laser-patterned microstructures exhibited superhydrophobicity with a maximum contact angle of 180° for the droplet volumes in the range of 8–12 μl.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!