Results 1 to 10 of about 23,841 (308)

Fabrication of Micro-Holes with High Aspect Ratios in C_f/SiC Composites Using Coaxial Waterjet-Assisted Nanosecond Laser Drilling [PDF]

Micromachines
In the present study, the coaxial waterjet-assisted nanosecond laser drilling of micro-holes in Cf/SiC composites, coupled with nanosecond laser drilling in air for fabricating micro-holes with high aspect ratios, were investigated.
Chenhu Yuan, Zenggan Bian, Yue Cao, Yinan Xiao, Bin Wang, Jianting Guo, Liyuan Sheng   +6 more
doaj   +2 more sources

Nanosecond resolution photography system for laser-induced cavitation based on PIV dual-head laser and industrial camera

Ultrasonics Sonochemistry, 2021
The detailed study of the initial and collapse processes of the laser-induced cavitation requires nanosecond resolution (both nanoseconds exposure and nanoseconds interframe time) of the photography measurement system.
Qiang Zhong, Zhifeng Yao, Fujun Wang
exaly   +3 more sources

Nanosecond laser induces proliferation and improved cellular health within the retinal pigment epithelium [PDF]

Frontiers in Medicine
BackgroundAge-related macular degeneration (AMD) is a leading cause of vision loss in those over 60 years of age. Although there are limited interventions that may prevent the development or progression of disease, more efficacious treatments are ...
Andrew I. Jobling, Quan Findlay, Ursula Greferath, Kirstan A. Vessey, Satya Gunnam, Victoria Morrison, Gene Venables, Robyn H. Guymer, Robyn H. Guymer, Erica L. Fletcher   +9 more
doaj   +2 more sources

Millisecond laser machining of transparent materials assisted by nanosecond laser

Optics Express, 2015
A new form of double pulse composed of a nanosecond laser and a millisecond laser is proposed for laser machining transparent materials. To evaluate its advantages and disadvantages, experimental investigations are carried out and the corresponding results are compared with those of single millisecond laser. The mechanism is discussed from two aspects:
Bing Han, Jian Lu, Xiaowu Ni
exaly   +3 more sources

Revival of femtosecond laser plasma filaments in air by a nanosecond laser

Optics Express, 2009
Short lived plasma channels generated through filamentation of femtosecond laser pulses in air can be revived after several milliseconds by a delayed nanosecond pulse. Electrons initially ionized from oxygen molecules and subsequently captured by neutral oxygen molecules provide the long-lived reservoir of low affinity allowing this process.
André Mysyrowicz, Aurélien Houard, Noelle Lascoux   +2 more
exaly   +4 more sources

Nanosecond laser coloration on stainless steel surface [PDF]

Scientific Reports, 2017
In this work, we present laser coloration on 304 stainless steel using nanosecond laser. Surface modifications are tuned by adjusting laser parameters of scanning speed, repetition rate, and pulse width.
Yan Lu, Xinying Shi, Zhongjia Huang, Taohai Li, Meng Zhang, Jakub Czajkowski, Tapio Fabritius, Marko Huttula, Wei Cao   +8 more
doaj   +4 more sources

Microgrooves with Small Taper Angle Processed by Nanosecond Laser in Closed Flowing Water [PDF]

Micromachines
To improve the capability of nanosecond lasers to process structures with a high aspect ratio, a new method of nanosecond laser processing in closed flowing water was proposed in this paper.
Guoyan Chen, Junfei Zhang, Jian Yuan, Bin He, Jinjin Han, Suorong Zhang   +5 more
doaj   +2 more sources

A mini-review on gene delivery technique using nanoparticles-mediated photoporation induced by nanosecond pulsed laser

Drug Delivery
Nanosecond pulsed laser induced photoporation has gained increasing attention from scholars as an effective method for delivering the membrane-impermeable extracellular materials into living cells.
Xiaofan Du, Cuiping Yao, Rongqian Wu
exaly   +3 more sources

Effect of laser type on hole machining of SiC/SiC composites

Journal of Aeronautical Materials, 2023
SiC/SiC composites have the characteristics of high hardness and brittleness, and they are typical difficult materials to process. Laser processing is mainly used to prepare cooling holes.
YANG Jinhua, HUANG Wangquan, FENG Xiaoxing, LIU Hu, AI Yingjun, ZHOU Yiran, JIAO Jian   +6 more
doaj   +1 more source

Nanosecond laser conditioning of multilayer dielectric gratings for picosecond–petawatt laser systems

High Power Laser Science and Engineering, 2023
Multilayer dielectric gratings (MLDGs) are crucial for pulse compression in picosecond–petawatt laser systems. Bulged nodular defects, embedded in coating stacks during multilayer deposition, influence the lithographic process and performance of the ...
Kun Shuai, Yuanan Zhao, Xiaofeng Liu, Xiangkun Lin, Zhilin Xia, Keqiang Qiu, Dawei Li, He Gong, Yan Zhou, Jian Sun, Li Zhou, Youen Jiang, Yaping Dai, Jianda Shao   +13 more
doaj   +1 more source