Results 31 to 40 of about 58,071 (294)

Targeted transfection by femtosecond laser

open access: yesNature, 2002
The challenge for successful delivery of foreign DNA into cells in vitro, a key technique in cell and molecular biology with important biomedical implications, is to improve transfection efficiency while leaving the cell's architecture intact. Here we show that a variety of mammalian cells can be directly transfected with DNA without perturbing their ...
Tirlapur, U, König, K
openaire   +5 more sources

The Acoustic Characteristic Investigation of Micro Plasma Shock Wave Obtained by Femtosecond Laser Ablation of Silicon Wafer Surface

open access: yesMATEC Web of Conferences, 2016
We experimentally investigate the acoustic characteristic of micro plasma shock wave obtained by femtosecond laser ablation of silicon wafer surface using F-P optical fiber acoustic sensor with anti electromagnetic interference.
Zhong Dong   +3 more
doaj   +1 more source

Effect of Femtosecond Laser Polarization on the Damage Threshold of Ta2O5/SiO2 Film

open access: yesApplied Sciences, 2022
The study used linearly and circularly polarized femtosecond pulsed lasers to irradiate a Ta2O5/SiO2 film. Firstly, the damage thresholds of the film for linearly and circularly polarized femtosecond pulsed lasers were measured in 1-on-1 mode.
Luwei Zhang   +6 more
doaj   +1 more source

Femtosecond Laser Nanostructuring of Metals

open access: yesFrontiers in Optics, 2006
In this paper, we report on various nanostructures produced through direct surface modification on metals using femtosecond laser pulses. We show, for the first time, that these nanosctructures are natural consequence following femtosecond laser ablation. The optimal conditions for producing various nanostructures are determined.
Chunlei Guo, Anatoliy Y. Vorobyev
openaire   +4 more sources

Advances in femtosecond laser technology

open access: yesClinical Ophthalmology, 2016
Femtosecond laser technology has become widely adopted by ophthalmic surgeons. The purpose of this study is to discuss applications and advantages of femtosecond lasers over traditional manual techniques, and related unique complications in cataract surgery and corneal refractive surgical procedures, including: LASIK flap creation, intracorneal ring ...
Rodrigo Guimarães de Souza   +5 more
openaire   +5 more sources

Femtosecond petawatt laser [PDF]

open access: yesAnnalen der Physik, 2014
AbstractThe high‐power femtosecond laser has now become an excellent scientific tool for the study of not only relativistic laser–matter interactions but also scientific applications. The high‐power femtosecond laser depends on the Kerr‐lens modelocking (KLM) and chirped‐pulse amplification (CPA) technique.
Tae Moon Jeong, Jongmin Lee
openaire   +2 more sources

Femtosecond Lasers in Ophthalmology [PDF]

open access: yesUS Ophthalmic Review, 2013
The use of the femtosecond laser in ophthalmic surgery over the last decade has resulted in the development of innovative procedures. The ultra-short infrared laser pulses of the femtosecond laser can be applied precisely and predictably with minimal collateral tissue damage, making it an ideal tool for highly precise ophthalmic surgery.
Roni M. Shtein, Duna Raoof-Daneshvar
openaire   +2 more sources

Femtosecond Laser Assisted Cataract Surgery in White Cataract

open access: yesDelhi Journal of Ophthalmology, 2015
Aim: To demonstrate application of femtosecond laser technology in patients with white cataract. Methods: Video-based description of successful management of intumescent white cataract with femtosecond laser technology.
Jeewan Singh Titiyal, Tarun Arora
doaj   +1 more source

Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites

open access: yesMolecules, 2021
Ultrafast laser drilling has been proven to effectively reduce the heat-affected zone (HAZ) of carbon fiber-reinforced polymer (CFRP) composites. However, previous research mainly focused on the effects of picosecond laser parameters on CFRP drilling ...
Hao Jiang   +3 more
doaj   +1 more source

Two-dimensional laser-induced periodic surface structures formed on crystalline silicon by GHz burst mode femtosecond laser pulses

open access: yesInternational Journal of Extreme Manufacturing, 2023
Femtosecond laser pulses with GHz burst mode that consist of a series of trains of ultrashort laser pulses with a pulse interval of several hundred picoseconds offer distinct features in material processing that cannot be obtained by the conventional ...
Shota Kawabata   +4 more
doaj   +1 more source

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