scholarly journals Oxidation ruled transition from normal to anomalous periodic structures with femtosecond laser irradiation on Cr/Si films

2021 ◽  
Author(s):  
Hongbo Xie ◽  
Bo Zhao ◽  
Yuhao Lei ◽  
ZHI YU ◽  
Jin Luo Cheng ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Periodic Structures ◽  
Femtosecond Laser Irradiation ◽  
Si Films

Submillimeter Micropart Feeding Along an Asymmetric Femtosecond-Laser-Microfabricated Surface

2009 ◽  
Vol 3 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Atsushi Mitani ◽  
◽  
Shinichi Hirai ◽  
Keyword(s):  
Stainless Steel ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Periodic Structures ◽  
Friction Angle ◽  
Femtosecond Laser Irradiation ◽  
Laser Technology ◽  
Feed Velocity ◽  
Inclined Surfaces ◽  
The Relationship

Femtosecond laser technology forms minute, stable gratings on such materials as silicon and stainless steel. Forming a periodic structure on the surfaces of sliding parts improves tribology characteristics because adhesion decreases with reductions in area of contact. Double-pulsed femtosecond laser irradiation generates periodic structures with asymmetric profiles, along which, as we have shown elsewhere, microparts such as ceramic chip capacitors and resistors can be fed using simple symmetric planar vibration. Microparts move unidirectionally because they adhere to these surfaces asymmetrically. In testing the feasibility of feeding 0402 capacitors 0.4 × 0.2 × 0.2 mm in size and 0.1 mg weighting along an asymmetric surface fabricated using double-pulsed femtosecond laser irradiation, we evaluated differences in the profiles of the two inclined surfaces, effects of decreased adhesion, the forward and backward coefficient of friction, and the bidirectional friction angle of 0402 capacitors. Based on feed experimental results, we assessed the relationship between drive frequency and feed velocity and, by calculating variations in feed velocity, feed stability.

scholarly journals Self-organized periodic structures on Ge-S based chalcogenide glass induced by femtosecond laser irradiation

2012 ◽  
Vol 20 (28) ◽  
pp. 29882 ◽  
Author(s):  
S. H. Messaddeq ◽  
R. Vallée ◽  
P. Soucy ◽  
M. Bernier ◽  
M. El-Amraoui ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Chalcogenide Glass ◽  
Periodic Structures ◽  
Femtosecond Laser Irradiation ◽  
Self Organized

Generation of nano-bumps on transparent quartz glass surface under femtosecond laser irradiation

2008 ◽  
Author(s):  
Wei Guo ◽  
Zeng Bo Wang ◽  
Lin Li ◽  
Zhu Liu ◽  
Boris Luk’yanchuk ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Quartz Glass ◽  
Glass Surface ◽  
Femtosecond Laser Irradiation

scholarly journals Condensation of Si-rich region inside soda-lime glass by parallel femtosecond laser irradiation

2014 ◽  
Vol 22 (13) ◽  
pp. 16493 ◽  
Author(s):  
Masaaki Sakakura ◽  
Kouhei Yoshimura ◽  
Torataro Kurita ◽  
Masahiro Shimizu ◽  
Yasuhiko Shimotsuma ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Soda Lime ◽  
Femtosecond Laser Irradiation ◽  
Soda Lime Glass ◽  
Rich Region

scholarly journals Three- and four-photon excited upconversion luminescence in terbium doped lutetium silicate powders by femtosecond laser irradiation

2013 ◽  
Vol 3 (11) ◽  
pp. 1803 ◽  
Author(s):  
Nikifor Rakov ◽  
Whualkuer Lozano B. ◽  
Edilson L. Falcão-filho ◽  
Renato B. Guimarães ◽  
Glauco S. Maciel ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Upconversion Luminescence ◽  
Femtosecond Laser Irradiation

scholarly journals Photo-initiation of ZnO nanorod formation by femtosecond laser irradiation

2010 ◽  
Vol 118 (1374) ◽  
pp. 147-151 ◽  
Author(s):  
Nan WU ◽  
Yasuhiko SHIMOTSUMA ◽  
Masayuki NISHI ◽  
Masaaki SAKAKURA ◽  
Kiyotaka MIURA ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Femtosecond Laser Irradiation ◽  
Zno Nanorod
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