Results 1 to 10 of about 1,293,751 (246)

Experimental Investigation on Ablation of 4H-SiC by Infrared Femtosecond Laser

open access: yesMicromachines, 2022
Femtosecond laser ablation has become one of the important structural processing methods for the third-generation semiconductor material, silicon carbide (SiC), and it is gradually being employed in the manufacture of microelectromechanical systems and ...
Lukang Wang   +4 more
doaj   +3 more sources

A Study of Femtosecond Laser Ablation Threshold on Several Materials Using Fiber Optic Beam Delivery System [PDF]

open access: yes한국정밀공학회지, 2020
A femtosecond laser is used in various fields such as microscale machining, OLED repair, micro 3D structure fabrication, and eye surgery. Particularly, because of non-thermal property, ablation and ablation threshold are the most representative ...
Junha Choi   +7 more
doaj   +1 more source

Investigations on the oxidation behavior and removal mechanism of SiC/SiC composites by multi-pulse femtosecond laser ablation

open access: yesJournal of Materials Research and Technology, 2023
SiC/SiC (SiC fiber-reinforced SiC matrix) composites have superior performance, making them promising candidates as one of the best materials for high-temperature components in aerospace applications. This investigation analyzed the morphology, structure,
Ning Zhou   +5 more
doaj   +1 more source

GHz bursts in MHz burst (BiBurst) enabling high-speed femtosecond laser ablation of silicon due to prevention of air ionization

open access: yesInternational Journal of Extreme Manufacturing, 2023
For the practical use of femtosecond laser ablation, inputs of higher laser intensity are preferred to attain high-throughput material removal. However, the use of higher laser intensities for increasing ablation rates can have detrimental effects on ...
Kotaro Obata   +4 more
doaj   +1 more source

Laser micromachining of steel and copper using femtosecond laser pulses in GHz burst mode

open access: yesResults in Physics, 2021
Investigations on the ablation of steel and copper with femtosecond laser pulses using single pulses and bursts of infinite sequence of pulses with 1 GHz intraburst repetition rate are presented in this paper.
Ona Balachninaitė   +3 more
doaj   +1 more source

Enhancement of ablation and ultrafast electron dynamics observation of nickel-based superalloy under double-pulse ultrashort laser irradiation

open access: yesJournal of Materials Research and Technology, 2022
Temporally shaped femtosecond laser machining is a flexible and effective method to improve the efficiency and quality of cooling film holes. This study investigated the ablation of nickel-based superalloy by double-pulse femtosecond laser with different
Zhicheng Chen   +5 more
doaj   +1 more source

A comparative study of femtosecond pulsed laser ablation of meloxicam in distilled water and in air

open access: yesScientific Reports, 2023
The increasing prevalence of water insoluble or poorly soluble drugs calls for the development of new formulation methods. Common approaches include the reduction of particle size and degree of crystallinity.
Eszter Nagy   +9 more
doaj   +1 more source

Influence of Pulse Energy and Defocus Amount on the Mechanism and Surface Characteristics of Femtosecond Laser Polishing of SiC Ceramics

open access: yesMicromachines, 2022
SiC ceramics have excellent comprehensive properties and are typical hard and brittle materials that are difficult to process and are widely used in many fields.
Xuanhua Zhang   +5 more
doaj   +1 more source

Ultrafast laser ablation, intrinsic threshold, and nanopatterning of monolayer molybdenum disulfide

open access: yesScientific Reports, 2022
Laser direct writing is an attractive method for patterning 2D materials without contamination. Literature shows that the ultrafast ablation threshold of graphene across substrates varies by an order of magnitude.
Joel M. Solomon   +9 more
doaj   +1 more source

Planar and ridge waveguides prepared by ion implantation and femtosecond laser ablation in Er3+-doped germanate glasses

open access: yesResults in Physics, 2023
The work reports the hydrogen-ion implantation and femtosecond laser ablation in the Er3+-doped germanate glass to make planar and ridge optical waveguides. The energy is 400 keV and the dose is 6 × 1016 ion/cm2 for the ion implantation. The pulse energy
Chun-Xiao Liu   +6 more
doaj   +1 more source

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