Results 31 to 40 of about 11,675,062 (262)

Compound Structures of Periodic Holes and Curved Ripples Fabricated by the Interference between the Converging Surface Plasmon Polaritons and Femtosecond Laser

Applied Sciences, 2022
Non-cylindrical vectorial femtosecond lasers are employed to irradiate tungsten surfaces. Compound nanopatterns composed of periodic nanoholes and semi-circular curved ripples are produced by scanning the target relative to the laser beam. The tangential
Tingyuan Wang, Lie Lin, Nan Zhang
doaj   +1 more source

Laser-Induced Period Surface Structures to Improve Solderability of Electrical Solder Pads

Applied Sciences, 2021
We report on structuring copper representing soldering pads of printed circuit boards by laser-induced periodic surface structures. Femtosecond laser radiation is used to generate low spatial frequency laser-induced surface structures, having a spatial ...
Stefan Rung, Ralf Hellmann
doaj   +1 more source

Influence of Bulk Temperature on Laser-Induced Periodic Surface Structures on Polycarbonate. [PDF]

Polymers (Basel), 2019
In this paper, the influence of the bulk temperature (BT) of Polycarbonate (PC) on the occurrence and growth of Laser-induced Periodic Surface Structures (LIPSS) is studied. Ultrashort UV laser pulses with various laser peak fluence levels F 0 and various numbers of overscans ( N OS ) were applied on the surface of pre-heated ...
Mezera M, Bonse J, Römer GRBE.
europepmc   +3 more sources

Femtosecond Laser-Induced Periodic Surface Structures on Fused Silica: The Impact of the Initial Substrate Temperature. [PDF]

Materials (Basel), 2018
Gräf S, Kunz C, Engel S, Derrien TJ, Müller FA.   +4 more
europepmc   +2 more sources

Femtosecond Laser‐Induced Periodic Surface Structuring of the Topological Insulator Bismuth Telluride

Advanced Physics Research, 2023
Surface structuring of topological insulator Bi2Te3 single crystals with femtosecond laser by varying pulses N and energy E is reported. Interesting effects related to laser‐induced periodic surface structures formation in this class of materials are ...
Meilin Hu, Jijil JJ Nivas, Marcella Salvatore, Stefano L. Oscurato, Anita Guarino, Rosalba Fittipaldi, Salvatore Amoruso, Antonio Vecchione   +7 more
doaj   +1 more source

Laser-induced modification of 5x(Ni/Pd)/Si and (Ni/Pd)/Si systems by picosecond pulses [PDF]

Tehnika, 2015
A study of morphological and composition changes of bimetallic (NiPd)/Si and 5x(Ni/Pd)/Si systems induced by laser pulses in picosecond time domain is presented.
Stupar Ana P., Peruško Davor B., Petrović Suzana M.   +2 more
doaj   +1 more source

Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process

Micromachines, 2023
This paper presents a study and comparison of surface effects induced by picosecond and nanosecond laser modification of a Ti6Al4V alloy surface under different ambient conditions: air and argon- and nitrogen-rich atmospheres.
Dubravka Milovanović, Boris Rajčić, Dragan Ranković, Biljana Stankov, Miha Čekada, Jovan Ciganović, Dragica Đurđević-Milošević, Zoran Stević, Miroslav Kuzmanović, Tatjana Šibalija, Sanja Petronić   +10 more
doaj   +1 more source

Characterizing the Grating-like Nanostructures Formed on BaF₂ Surfaces Exposed to Extreme Ultraviolet Laser Radiation

Applied Sciences, 2022
Monocrystalline barium fluoride (BaF2) slab targets were irradiated by focused 46.9-nm laser radiation at various fluence levels above the ablation threshold. Well-developed ablation patterns with sharp edges were studied by AFM (atomic force microscopy).
Huaiyu Cui, Alexandr Frolov, Jiri Schmidt, Jaroslav Straus, Tomas Burian, Vera Hajkova, Jaromir Chalupsky, Yongpeng Zhao, Karel Kolacek, Libor Juha   +9 more
doaj   +1 more source

A practical technique for the generation of highly uniform LIPSS [PDF]

, 2014
Laser-induced periodic surface structures (LIPSS) can be reliably produced with ultrashort (<10 ps) laser pulses given fluence near the ablation threshold. Neat, parallel, uniform structures are harder to reproduce.
Weston, Nick, Ardron, Marcus, Hand, Duncan, Hand, Duncan; id_orcid   +3 more
core   +1 more source

Picosecond Laser-induced periodic surface structures [PDF]

, 2020
The interaction of an object with its surroundings depends firstly on the object's surface, which determines its surface properties due to its chemical properties and macro- and microscopic structures on the surface. Earth's flora and fauna offers a vast collection of different specialized surface properties due to (hierarchical) micro- and ...
openaire   +3 more sources