Results 11 to 20 of about 65,629 (304)

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

open access: yesApplied 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

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

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

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 in laser in situ keratomileusis [PDF]

open access: yesJournal of Cataract and Refractive Surgery, 2010
Flap creation is a critical step in laser in situ keratomileusis (LASIK). Efforts to improve the safety and predictability of the lamellar incision have fostered the development of femtosecond lasers. Several advantages of the femtosecond laser over mechanical microkeratomes have been reported in LASIK surgery.
Marcella Q, Salomão, Steven E, Wilson
openaire   +2 more sources

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

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

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