Results 21 to 30 of about 1,271,300 (239)

Micromachining of polycrystalline CVD diamond-coated cutting tool with femtosecond laser

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
To enhance the cutting performance of chemical vapor deposit (CVD) diamond-coated tool, a short pulse laser grinding technique is applied. However, the thermal impact of a nanosecond laser damages the diamond crystallinity of the processed surface.
Xiaoxu LIU   +3 more
doaj   +1 more source

Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy

open access: yesAIP Advances, 2023
Various types of micro-/nanostructures can be fabricated by femtosecond laser irradiation on metal surfaces. It has received extensive attention and research because of its potential application value. In this paper, the effect of laser focusing position
Lin Song   +4 more
doaj   +1 more source

Femtosecond laser treatment promotes the surface bioactivity and bone ingrowth of Ti6Al4V bone scaffolds

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
In this study, a femtosecond laser with a wavelength of 800 nm was used to modify the surface of a titanium alloy bone scaffold created via selective laser melting (SLM).
Su Wang   +10 more
doaj   +1 more source

Femtosecond laser-assisted arcuate keratotomy for the management of corneal astigmatism in patients undergoing cataract surgery: Comparison with conventional cataract surgery

open access: yesFrontiers in Medicine, 2022
PurposeTo assess the effects of femtosecond laser arcuate keratotomy with femtosecond laser-assisted cataract surgery in the management of corneal astigmatism, compared with conventional phacoemulsification cataract surgery.DesignRetrospective ...
Hyunmin Ahn   +7 more
doaj   +1 more source

Optical Angle Sensor Technology Based on the Optical Frequency Comb Laser

open access: yesApplied Sciences, 2020
A mode-locked femtosecond laser, which is often referred to as the optical frequency comb, has increasing applications in various industrial fields, including production engineering, in the last two decades.
Yuki Shimizu, Hiraku Matsukuma, Wei Gao
doaj   +1 more source

Investigation of diffractive grating creation in glass by using femtosecond laser pulses [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2019
In this paper, the interaction of femtosecond laser pulses with BK7 glass is investigated. A Ti:sapphire femtosecond laser with the chirped pulse amplification is used.
R Goodarzi, F Hajiesmaeilbaigi
doaj   +1 more source

The Antimicrobial Effect of Gold Quantum Dots and Femtosecond Laser Irradiation on the Growth Kinetics of Common Infectious Eye Pathogens: An In Vitro Study

open access: yesNanomaterials, 2022
We studied the antimicrobial effect of gold quantum dots (AuQDs), femtosecond laser irradiation, and the combined effect of laser irradiation and AuQD treatment against common infectious eye pathogens.
Ahmed O. El-Gendy   +5 more
doaj   +1 more source

The art and science of femtosecond laser writing [PDF]

open access: yes, 2009
We demonstrate how femtosecond laser writing can challenge common beliefs in optics. Recently discovered phenomena of quill writing related to self-assembled nanostructuring in glasses and non-reciprocal laser writing in crystals are ...
Kazansky, P.G.   +9 more
core   +1 more source

Studying of photoluminescence property of carbazole unit based push-pull oligomers

open access: yesAIP Advances, 2019
The photoluminescence (PL) property of two push-pull oligomers named C2B and DC2B, comprising of carbazole and difluoroboron β-diketonate units, were probed by many optical tests.
Ying Chen   +7 more
doaj   +1 more source

SILICON SURFACE MICROSTRUCTURING BY SINGLE-EXPOSURE FEMTOSECOND DOUBLE LASER PULSE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper evaluates the possibility of periodic microstructures formation on the silicon surface by single-exposure double femtosecond laser pulse. Method.
E. V. Kuzmin   +3 more
doaj   +1 more source

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