Machining fused silica surface by continuous-wave CO2 laser beams and their nanostructure characterizations

2021 ◽  
pp. 130960
Author(s):  
Yu-Jen Hsu ◽  
Hsing-Yu Wu ◽  
Wei-Che Chang ◽  
Yung-Tang Nien
Keyword(s):  
Co2 Laser ◽  
Continuous Wave ◽  
Silica Surface ◽  
Fused Silica ◽  
Laser Beams

Localized CO2 laser treatment and post-heating process to reduce the growth coef f icient of fused silica surface damage

2011 ◽  
Vol 9 (6) ◽  
pp. 061405-61407 ◽  
Author(s):  
徐世珍 Shizhen Xu ◽  
祖小涛 Xiaotao Zu ◽  
袁晓东 Xiaodong Yuan
Keyword(s):  
Laser Treatment ◽  
Co2 Laser ◽  
Silica Surface ◽  
Surface Damage ◽  
Fused Silica ◽  
Heating Process ◽  
Co2 Laser Treatment

Incorporation of Multi Wall Carbon Nanotubes into Glass-Surfaces via Laser-Treatment

2003 ◽  
Vol 772 ◽  
Author(s):  
T. Seeger ◽  
G. de la Fuente ◽  
W.K. Maser ◽  
A.M. Benito ◽  
A. Righi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Continuous Wave ◽  
Silica Surface ◽  
Multi Wall Carbon Nanotubes ◽  
Composite Formation ◽  
Multi Walled Carbon Nanotubes ◽  
Glass Surfaces ◽  
Walled Carbon Nanotubes ◽  
First Time ◽  
Scanning Electron

AbstractCarbon nanotubes (CNT) are interesting candidates for the reinforcement in robust composites and for conducting fillers in polymers due to their fascinating electronic and mechanical properties. For the first time, we report the incorporation of multi walled carbon nanotubes (MWNTs) into silica-glass surfaces by means of partial surface-melting caused by a continuous wave Nd:YAG laser. MWNTs were detected being well incorporated in the silica-surface. The composites are characterized using scanning electron microscopy (SEM) and Raman-spectroscopy. A model for the composite-formation is proposed based on heatabsorption by MWNTs and a partial melting of the silica-surface.

scholarly journals Thin-Film Processing of Polypropylene and Polystyrene Sheets by a Continuous Wave CO2 Laser with the Cu Cooling Base

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1448
Author(s):  
Nobukazu Kameyama ◽  
Hiroki Yoshida ◽  
Hitoshi Fukagawa ◽  
Kotaro Yamada ◽  
Mitsutaka Fukuda
Keyword(s):  
Thin Film ◽  
Co2 Laser ◽  
Continuous Wave ◽  
Cw Laser ◽  
Heat Effects ◽  
Film Processing ◽  
Carbon Dioxide Co2 ◽  
A Minor ◽  
Residual Heat ◽  
Thin Film Processing

Carbon dioxide (CO2) laser is widely used in commercial and industrial fields to process various materials including polymers, most of which have high absorptivity in infrared spectrum. Thin-film processing by the continuous wave (CW) laser is difficult since polymers are deformed and damaged by the residual heat. We developed the new method to make polypropylene (PP) and polystyrene (PS) sheets thin. The sheets are pressed to a Cu base by extracting air between the sheets and the base during laser processing. It realizes to cut the sheets to around 50 µm thick with less heat effects on the backside which are inevitable for thermal processing using the CW laser. It is considered that the boundary between the sheets and the base is in thermal equilibrium and the base prevents the sheets from deforming to support the backside. The method is applicable to practical use since it does not need any complex controls and is easy to install to an existing equipment with a minor change of the stage.

A recycling strategy of ion beam removal and recoating of sol-gel film on fused silica surface

Optik ◽  
2021 ◽  
pp. 167259
Author(s):  
Wenfeng Sun ◽  
Xia Xiang ◽  
Bo Li ◽  
Xiang Dong ◽  
Xiaolong Jiang ◽  
...  
Keyword(s):  
Silica Surface ◽  
Ion Beam ◽  
Sol Gel ◽  
Fused Silica ◽  
Gel Film

Investigation on the influence of the CO2 laser parameters on the defect healing process of fused silica

2021 ◽  
Author(s):  
Zican YANG ◽  
Jian Cheng ◽  
Linjie Zhao ◽  
Mingjun Chen ◽  
Jinghe Wang ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Healing Process ◽  
Fused Silica ◽  
Laser Parameters ◽  
Defect Healing

Influence of secondary treatment with CO 2 laser irradiation for mitigation site on fused silica surface

2016 ◽  
Vol 25 (10) ◽  
pp. 108104
Author(s):  
Yong Jiang ◽  
Qiang Zhou ◽  
Rong Qiu ◽  
Xiang Gao ◽  
Hui-Li Wang ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Silica Surface ◽  
Fused Silica ◽  
Secondary Treatment

scholarly journals Threshold of permanent cornea thermal damage due to incidental continuous wave CO2 laser irradiation

2010 ◽  
Vol 14 (2) ◽  
pp. 459-467 ◽  
Author(s):  
Mayada Tahir
Keyword(s):  
Laser Irradiation ◽  
Co2 Laser ◽  
Thermal Damage ◽  
Continuous Wave ◽  
Anterior Part ◽  
Outer Part ◽  
Human Cornea ◽  
Thermal Dose ◽  
Element Analysis ◽  
Reflex Blink

Cornea thermal damage due to incidental continuous wave CO2 laser irradiation is studied numerically based on bio-heat equation. The interaction of laser with tissue leads to a rapid temperature increased in target and the nearby tissue. As the temperature of the eye surface reaches 44?C, a sensation of pain will cause aversion response of the reflex blink and/or shifting away from the source of pain. The aim of the work is to predict numerically the threshold limit of incidental laser power that causes damage to the anterior part of the cornea, which can be healed within 2-5 days as long as damage is not exceeding the outer part of the eye (epithelium). A finite element analysis is used to predict temperature distribution through the cornea where the necroses region can be obtained using thermal dose equation. The thermal dose that required for damaging the cornea is predicted from previously published experimental data on rhesus monkeys and used later as a limit for shrinkage to human cornea. The result of this work is compared by international standard of safety and a good nearby result is obtained which verified the result of this work.

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