Effect of liquid film on near-threshold laser ablation of a solid surface

Kim, Dongsik; Oh, Bonggi; Lee, Ho

doi:10.1016/j.apsusc.2003.08.013

Cited by 34 publications

(12 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9, the trace of circular ripples on the material surface implies the influence of optical reflectance, bubble growth behavior, and consequent pressure generation on the ablation process 44 . An increasing energy coupling efficiency produced by “optical matching” enhances the ablation rate 35,45 . A thin‐layer liquid film is applied, which can easily modify the optical properties of a surface 45 .…”

Section: Resultsmentioning

confidence: 99%

“…An increasing energy coupling efficiency produced by “optical matching” enhances the ablation rate 35,45 . A thin‐layer liquid film is applied, which can easily modify the optical properties of a surface 45 . It can be explained that the reflective index of liquids (i.e., water and methanol) is greater than that of air; the overall surface absorptivity increases as the liquid film is applied on the surface.…”

Section: Resultsmentioning

confidence: 99%

“…It can be explained that the reflective index of liquids (i.e., water and methanol) is greater than that of air; the overall surface absorptivity increases as the liquid film is applied on the surface. Kim et al 45 . reported that the maximum surface temperature under liquid‐coated Al surface has been increased by approximately 25% on exposure to Nd:YAG laser pulse irradiation.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Solvent-Assisted Laser Drilling of Silicon Carbide

Wee

Khoong

Tan

et al. 2010

International Journal of Applied Ceramic Technology

View full text Add to dashboard Cite

Laser drilling of single crystalline silicon carbide (SiC) wafer in air, under water, and under methanol with a 355 nm wavelength laser is investigated and compared. Among these different media, laser drilling of SiC under a solvent, methanol, is found to produce holes with a relatively cleaner and smoother surface. Ablated particle redeposition at the entrance and exit of the holes is minimized. Minimum oxide (i.e., silicon dioxide) or heat-affected zones are observed and the surface finish inside the holes is much smoother and more uniform as compared with those drilled in air and under water. The improvement of drilling quality can be attributed to the relatively lower boiling temperature and better wettability of the solvents, which enhance the effects of cooling (thermal damage free) and ablated particle cleaning during laser drilling. It is found that the quality of laser drilling of SiC varied with the thickness of solvent layer, that is, water and methanol. A solvent layer of 500 mm is suggested to be used for the enhancement of laser ablation rate and quality.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Solvent-Assisted Laser Drilling of Silicon Carbide

Wee

Khoong

Tan

et al. 2010

International Journal of Applied Ceramic Technology

View full text Add to dashboard Cite

show abstract

“…In LA of zirconia by fs pulses, the highest ablation rate in presence of acetone was achieved for the liquid height between 0.2 and 0.7 mm [30]. At fixed experimental conditions, the film thickness for the maximum target ablation depends on the liquid properties [31].…”

Section: Introductionmentioning

confidence: 97%

Laser-Induced Breakdown Spectroscopy Applied on Liquid Films: Effects of the Sample Thickness and the Laser Energy on the Signal Intensity and Stability

Lazic

Ciaffi

2017

Journal of Spectroscopy

View full text Add to dashboard Cite

Droplets of organic liquids on aluminum substrate were probed by an Nd:YAG laser, both in a steady state and during rotation at speeds 18-150 rpm. Rotation transforms the droplet into film, which estimated thickness at high speeds was below 3 μm and 20 μm for diesel and peanut oil, respectively. Line intensities from the liquid (C I) and the support (Al I) material were tracked as a function of the film thickness and the laser energy. By film thinning, the line intensities from liquid sample were enhanced up to a factor 100x; simultaneously, the LIBS signal fluctuations were reduced 5-10 times with respect to the steady droplet. In certain experimental conditions, the line intensities from the support material become very weak with respect to the C I line, indicating an efficient screening of the substrate by highly excited plasma from the liquid layer. At a fixed rotation speed, there is a laser energy threshold, dependent on the liquid thickness, above which the LIBS signal becomes stable. Here, we discuss the relative processes and optimization of the experimental conditions for the LIBS measurements frome one laser shot to another.

show abstract

“…Previous studies demonstrated that the addition of water in tissue improves ablation efficiency and surface morphology as well as lowers pulpal temperature [4][5][6][7] . The material-processing studied showed that the application of a transparent water layer contribute to lower damage threshold and enhanced ablation performance [8][9] . In the case of hard tissue ablation, temperature elevation between 44 and 47 o C may lead to bony tissue necrosis 10 .…”

Section: Introductionmentioning

confidence: 99%

Influence of liquid medium with different absorption and its layer thickness on bovine bone tibia ablation induced by CO₂laser

Chen

Zhang

et al. 2014

SPIE Proceedings

View full text Add to dashboard Cite

Liquid-assisted laser ablation has been investigated in laser surface cleaning, laser osteotomy, and dental tissue ablation.However, the actual mechanism of liquid-assisted ablation is not clear yet. The purpose of this study was to investigate the influence of liquid medium with different absorption and the liquid thickness on laser ablation efficiency. A pulsed CO2 laser was employed to ablate bovine bone tibia under liquid layer which varied from 0.6 mm to 2 mm. The applied pulse power level was set at 5 w and each crater was produced with six laser pulses. The results showed that the ablation cross-section area produced with various levels of pure water thickness (0.6, 0.8, 1 and 2 mm)were lower than under ink, and the ablation depth gradually decreased as the water layer becoming thicker. The biggest cross-section area in liquid thickness of ink was 0.8mm, but as the layer thicker than 0.8 mm the ablation depth decreased suddenly. There was thermal damage seen on samples in all of the groups, but less in pure water.

show abstract

Effect of liquid film on near-threshold laser ablation of a solid surface

Cited by 34 publications

References 22 publications

Solvent-Assisted Laser Drilling of Silicon Carbide

Solvent-Assisted Laser Drilling of Silicon Carbide

Laser-Induced Breakdown Spectroscopy Applied on Liquid Films: Effects of the Sample Thickness and the Laser Energy on the Signal Intensity and Stability

Influence of liquid medium with different absorption and its layer thickness on bovine bone tibia ablation induced by CO₂laser

Contact Info

Product

Resources

About

Effect of liquid film on near-threshold laser ablation of a solid surface

Cited by 34 publications

References 22 publications

Solvent-Assisted Laser Drilling of Silicon Carbide

Solvent-Assisted Laser Drilling of Silicon Carbide

Laser-Induced Breakdown Spectroscopy Applied on Liquid Films: Effects of the Sample Thickness and the Laser Energy on the Signal Intensity and Stability

Influence of liquid medium with different absorption and its layer thickness on bovine bone tibia ablation induced by CO2laser

Contact Info

Product

Resources

About

Influence of liquid medium with different absorption and its layer thickness on bovine bone tibia ablation induced by CO₂laser