scholarly journals Groove Formation in Glass Substrate by a UV Nanosecond Laser

2020 ◽  
Vol 10 (3) ◽  
pp. 987
Author(s):  
Joonghan Shin ◽  
Kimoon Nam
Keyword(s):  
Glass Surface ◽  
Laser Power ◽  
Material Removal ◽  
Smooth Surface ◽  
Soda Lime ◽  
Threshold Power ◽  
Soda Lime Glass ◽  
Nanosecond Laser ◽  
Scan Speed ◽  
Small Cracks

This study reports the laser grooving of glass. In this study, an ultraviolet (UV) nanosecond laser is used to produce grooves in soda lime glass by varying laser power, scan speed, pulse repetition rate, and number of scans. The threshold power density to generate damage on glass surface is found to be ~6.37 × 108 W/cm2. According to the result of a single laser scan, at a high laser power and low scan speed, material removal does not nearly occur, and only volume melting underneath the glass surface and large thermal crack are induced. With the decreasing laser power and increasing scan speed, a groove with a smooth surface is formed owing to the melting-dominant material removal process. The groove of rough surface morphology is produced with the further increase of the scan speed due to shattering induced by shock wave. Under this condition, it is found that either small cracks are produced or a crack-free groove is obtained. In this study, the fabrication of the microchannel for bio-chip application is also attempted by multiple laser scans. The near rectangular-shaped and crack-free groove (width × depth: ~220 μm × ~500 μm) with quite a smooth surface is fabricated by the multiple laser scans with a non-zero scan spacing.

Control of soda-lime glass surface crystallization with thermal poling

2020 ◽  
Vol 533 ◽  
pp. 119899 ◽  
Author(s):  
А. Dergachev ◽  
V. Kaasik ◽  
A. Lipovskii ◽  
V. Melehin ◽  
A. Redkov ◽  
...  
Keyword(s):  
Glass Surface ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Surface Crystallization ◽  
Thermal Poling

scholarly journals Crack formation in soda-lime glass after high-power ion beam irradiation

2018 ◽  
Vol 36 (3) ◽  
pp. 359-362
Author(s):  
Vladimir S. Kovivchak ◽  
Tatyana V. Panova
Keyword(s):  
High Power ◽  
Glass Surface ◽  
Ion Beam ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Nanosecond Duration ◽  
Air Atmosphere ◽  
Glass Fracture ◽  
Current Densities ◽  
Heated Glass

AbstractThe fractures of a soda-lime glass surface layer were investigated under irradiation by a high-power ion beam of nanosecond duration with different current densities. Two kinds of cracks (perpendicular and approximately parallel irradiated surfaces) have been identified. It is defined that cracks approximately parallel to the surface are localized at a depth of 10 ± 2 µm from the irradiated glass surface after one-time irradiation with a current density of 100 A/cm2. The formation of these cracks was detected within ~170 h after the end of irradiation when irradiated samples were under an air atmosphere. In a vacuum, the growth of these cracks was insignificant. It is shown that irradiation of heated glass or heating of glass started no later than 2–3 min after irradiation can suppress or substantially reduce surface fracture of glass. The possible mechanisms of glass fracture were discussed.

Formation of superhydrophobic soda-lime glass surface using femtosecond laser pulses

2013 ◽  
Vol 265 ◽  
pp. 784-789 ◽  
Author(s):  
Md. Shamim Ahsan ◽  
Fadia Dewanda ◽  
Man Seop Lee ◽  
Hitoshi Sekita ◽  
Tetsumi Sumiyoshi
Keyword(s):  
Femtosecond Laser ◽  
Glass Surface ◽  
Soda Lime ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Soda Lime Glass

Direct Selective Laser Sintering of WC-Co Cemented Carbide by Premixing of Additives

2012 ◽  
Author(s):  
Hideki Kyogoku ◽  
Takeshi Uemori ◽  
Akihiko Ikuta ◽  
Kenichi Yoshikawa ◽  
Hitoshi Ohmori
Keyword(s):  
Selective Laser Melting ◽  
Laser Power ◽  
Smooth Surface ◽  
Laser Scanning ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Cemented Carbides ◽  
Sintering Process ◽  
Laser Melting ◽  
Scan Speed

In this study, the fabrication conditions of WC cemented carbides by direct selective laser melting were investigated. The effects of additives, such as Co, Cu-20%Sn and Cu powders, and laser scanning conditions on laser sintering process were examined to fabricate a sound laser-scanned body of WC cemented carbides. The optimum laser power, scan speed and scan pitch were found out by experiments. It was found that the continuously smooth single-scan track can be obtained at a lower laser power and a higher scan speed by the addition of 30% Cu powder. The smooth surface of the laser-scanned body could be fabricated at a laser power of 9 W, a scan speed of 20 mm/s and a scan pitch of 0.05 mm.

scholarly journals Selective Deposition of SiO2 on Ion Conductive Area of Soda-lime Glass Surface

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Daisuke Sakai ◽  
Kenji Harada ◽  
Yuichiro Hara ◽  
Hiroshi Ikeda ◽  
Shiro Funatsu ◽  
...  
Keyword(s):  
Glass Surface ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Selective Deposition

scholarly journals Texturing of Glass Surface using Micro-slurry Jet Machining Process

2021 ◽  
Vol 7 ◽  
Author(s):  
Hajime Yamaguchi ◽  
Koshi Sakata ◽  
Keiji Kasamura ◽  
Yuta Nakashima ◽  
Yoshitaka Nakanishi
Keyword(s):  
Functional Properties ◽  
Glass Surface ◽  
Three Dimensional ◽  
Soda Lime ◽  
Travel Speed ◽  
Machining Process ◽  
Soda Lime Glass ◽  
Laser Machine ◽  
Co Laser ◽  
Glass Surfaces

Existing methods for the microfabrication of convex structures on a glass surface require a complex and expensive masking process. In this study, a simple microfabrication method that combines the masking process using polyimide tapes and a micro-slurry jet (MSJ) process was developed. The masking process was performed using a CO₂ laser machine, and the surface of the processed glass was observed using a three-dimensional laser microscope. Although the geometric shape of the mask was not a perfect circle, convex structures with a diameter of approximately 1.0 mm and heights of more than 1.5 μm were formed on soda-lime glass surfaces. The deepest structures were observed to create convex structures with a height of 19 µm. The effects of the travel speed of the nozzle and number of repetitions of the MSJ process on the height of the convex structures on the glass surface were also investigated. It was found that the masking process combining polyimide tapes and the MSJ process could form high-convexity structures on the glass surface. The proposed method is expected to enable the fabrication of devices with various functional properties for materials that cannot be processed using existing methods.

scholarly journals Review on Material Removal Technology of Soda-Lime Glass Material

2017 ◽  
Vol 10 (8) ◽  
pp. 1-7 ◽  
Author(s):  
Pravin Pawar ◽  
Raj Ballav ◽  
Amaresh Kumar ◽  
◽  
◽  
...  
Keyword(s):  
Material Removal ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Glass Material ◽  
Removal Technology
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