Automated, Ultra‐Fast Laser‐Drilling of Nanometer Scale Pores and Nanopore Arrays in Aqueous Solutions
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Functional Materials"
DOI: 10.1002/adfm.201900642
Abstract: The ability to quickly and reliably fabricate nanoscale pore arrays in ultrathin membranes such as silicon nitride (SixN) is extremely important for the growing field of nanopore biosensing. Laser-based etching of thin SixN membranes immersed… read more here.
Keywords: laser drilling; aqueous solutions; ultra fast; automated ultra ... See more keywords
Modeling laser drilling in percussion regime using constraint natural element method
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Material Forming"
DOI: 10.1007/s12289-015-1269-0
Abstract: The laser drilling process is the main process used in machining procedures on aeronautic engines, especially in the cooling parts. The industrial problematic is to reduce geometrical deviations of the holes and defects during manufacturing.… read more here.
Keywords: laser drilling; element method; constraint natural; process ... See more keywords
Time-Optimal Connection Between On-the-Fly Drilling Trajectories and Rest Boundary Conditions
Sign Up to like & getrecommendations! Published in 2019 at "Arabian Journal for Science and Engineering"
DOI: 10.1007/s13369-019-04007-1
Abstract: This paper presents a new algorithm, capable of handling five degree-of-freedom (axis) positioning and details the generation of connection trajectories into and out of the closed cubic spline trajectory, which is used for repeating on-the-fly… read more here.
Keywords: time; laser drilling; closed cubic; boundary conditions ... See more keywords
Numerical simulation of metal removal in laser drilling using meshless local Petrov–Galerkin collocation method
Sign Up to like & getrecommendations! Published in 2018 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2017.08.032
Abstract: Abstract A simplified 2D axisymmetric meshfree model of transient metal laser drilling is proposed for a continuous laser beam of Gaussian distribution. The penetration depth is predicted over the whole ablation time. The meshless local… read more here.
Keywords: laser drilling; petrov galerkin; meshless local; metal ... See more keywords
Copper induced direct CO2 laser drilling blind hole with the aid of brown oxidation for PCB CCL
Sign Up to like & getrecommendations! Published in 2019 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2019.02.050
Abstract: Abstract CO2 laser drilling of blind hole is the necessary process to obtain high-density connection between different conductive layers for printed circuit board (PCB). A copper induced direct CO2 laser drilling blind hole was proposed… read more here.
Keywords: microscopy; co2 laser; copper; oxidation ... See more keywords
Geometrical morphology optimisation of laser drilling in B4C ceramic: From plate to hollow microsphere
Sign Up to like & getrecommendations! Published in 2018 at "Ceramics International"
DOI: 10.1016/j.ceramint.2017.08.206
Abstract: Abstract Boron carbide (B 4 C) ceramic plates with 400-µm thickness and hollow microspheres were used for hole machining study with a fibre laser. The diameter, hole circularity, taper angle, and recast layer were evaluated… read more here.
Keywords: geometrical morphology; laser drilling; morphology optimisation; optimisation laser ... See more keywords
Characterization of hole taper in laser drilling of silicon nitride ceramic under water
Sign Up to like & getrecommendations! Published in 2018 at "Ceramics International"
DOI: 10.1016/j.ceramint.2018.04.173
Abstract: Abstract Nanosecond pulsed laser drilling of silicon nitride ceramic was conducted in air and under water to study the effects of laser scanning speed and processing environment on the hole taper. Results showed that drilling… read more here.
Keywords: silicon nitride; laser drilling; water; drilling silicon ... See more keywords
A review on laser drilling and cutting of silicon
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2021.04.019
Abstract: Abstract Silicon is the most widely used material in numerous fields. Traditional mechanical machining methods have been unable to meet the higher requirements of processing quality. Laser machining is especially suitable for processing hard and… read more here.
Keywords: drilling cutting; laser drilling; cutting silicon; laser ... See more keywords
Monitoring and analysis of millisecond laser drilling process and performance with and without longitudinal magnetic assistance and/or assist gas
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Manufacturing Processes"
DOI: 10.1016/j.jmapro.2019.10.015
Abstract: Abstract A systematic investigation was reported for observing and analyzing the process and performance of millisecond laser drilling with and without magnetic assistance and/or assist gas using a self-developed real-time monitoring system based on high-speed… read more here.
Keywords: assist gas; longitudinal magnetic; assistance; laser drilling ... See more keywords
Defocusing effect and energy absorption of plasma in picosecond laser drilling
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126410
Abstract: Abstract Plasma is commonly existing in pulsed laser drilling and it has an important impact on drilling results. The effects include plasma absorption and defocusing effect caused by plasma. This paper studied the influence of… read more here.
Keywords: defocusing effect; laser drilling; energy absorption;
Pulsed Nd:YAG laser beam drilling: A review
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2017.09.054
Abstract: Abstract Laser beam drilling (LBD) is one of non contact type unconventional machining process that are employed in machining of stiff and high-strength materials, high strength temperature resistance materials such as; metal alloys, ceramics, composites… read more here.
Keywords: laser drilling; pulsed yag; beam drilling; machining ... See more keywords