scholarly journals MECHANICAL PROPERTIES OF SURFACE STRUCTURES OF TITANIUM ALLOY VT9 AFTER REPEATED LOCAL PROCESSING WITH NANOSECOND LASER PULSES

2020 ◽  
pp. 19-35
Author(s):  
Yuri V. Simonov ◽  
Ivan V. Ushakov
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Laser Pulses ◽  
Surface Structures ◽  
Local Processing ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses

scholarly journals Исследование влияния обработки лазерными импульсами наносекундной длительности на структуру субмикрокристаллического титана

2021 ◽  
Vol 47 (14) ◽  
pp. 21
Author(s):  
Ю.Р. Колобов ◽  
С.С. Манохин ◽  
Г.В. Одинцова ◽  
В.И. Бетехтин ◽  
А.Г. Кадомцев ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Titanium Alloy ◽  
Subsurface Layer ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
X Ray ◽  
Transmission Electron ◽  
Nanosecond Laser Pulses

The microstructure of a thin subsurface layer of VT1-0 titanium alloy samples in the initial submicrocrystalline state after exposure to nanosecond laser pulses has been studied using scanning and transmission electron microscopy (with the possibility of X-ray microanalysis).

Formation of Periodical Sub-Micron Sized Structures on Silicon by Interfered Nanosecond Laser Pulses

2010 ◽  
Vol 97-101 ◽  
pp. 3803-3806
Author(s):  
Yong Xiang Hu ◽  
Heng Zhang ◽  
Zheng Qiang Yao
Keyword(s):  
Cost Effective ◽  
Laser Pulses ◽  
Laser Beams ◽  
Nanosecond Laser ◽  
Effective Technique ◽  
First Order ◽  
Direct Fabrication ◽  
Cost Effective Technique ◽  
Nanosecond Laser Pulses ◽  
Micro Structuring

Laser interference micro-structuring is a relatively efficient and cost-effective technique for fabricating periodical micro-nano-structuring surfaces. The direct fabrication of sub-micron sized dot array on silicon was performed by four interfering nanosecond laser beams with a diffractive beam splitter. The mechanism to form the dot array was analyzed and it was found that the obtained conical dot array had a negative shape of the interference pattern of four laser beams. A second-order peak between two first-order peaks also occurred due to the liquid-solid expansion.

scholarly journals Laser Formation of Periodic Micro- and Nanostructures on the Surface of Monocrystalline Silicon

2020 ◽  
Vol 21 (2) ◽  
pp. 215-218
Author(s):  
I. A. Mohylyak ◽  
O. Yu. Bonchyk ◽  
S. A. Korniy ◽  
S. G. Kiyak ◽  
D. I. Popovych
Keyword(s):  
Periodic Structures ◽  
Experimental Studies ◽  
Laser Pulses ◽  
Pulse Mode ◽  
Semiconductor Surface ◽  
Nanosecond Laser ◽  
Periodic Nanostructures ◽  
Nanosecond Laser Pulses ◽  
Electron Microscopes ◽  
Microscopic Investigations

Experimental studies of the features of the formation of laser-induced periodic nanostructures on the surface of silicon wafers in the zones of action of second, millisecond and nanosecond laser pulses are conducted in the work. The results of microscopic investigations by optical and electron microscopes of periodic structures formed on surfaces with crystallographic orientation (111), (100) are presented. The obtained results can be used to optimize the laser pulse mode for controlled micro- nanostructuring of the semiconductor surface.

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