Enhancement of optical absorption and photocurrent of 6H-SiC by laser surface nanostructuring

2007 ◽  
Vol 91 (12) ◽  
pp. 121107 ◽  
Author(s):  
Q. Z. Zhao ◽  
F. Ciobanu ◽  
S. Malzer ◽  
L. J. Wang
Keyword(s):  
Optical Absorption ◽  
Laser Surface ◽  
Surface Nanostructuring

Review of methods of direct laser surface nanostructuring of materials

2010 ◽  
Author(s):  
V. N. Tokarev ◽  
V. A. Shmakov ◽  
V. A. Yamschikov ◽  
R. R. Khasaya ◽  
S. I. Mikolutskiy ◽  
...  
Keyword(s):  
Laser Surface ◽  
Surface Nanostructuring ◽  
Direct Laser

Colorizing Ti-6Al-4V surface via high-throughput laser surface nanostructuring

2019 ◽  
Vol 43 ◽  
pp. 70-75 ◽  
Author(s):  
Qinghua Wang ◽  
Avik Samanta ◽  
Fatima Toor ◽  
Scott Shaw ◽  
Hongtao Ding
Keyword(s):  
High Throughput ◽  
Laser Surface ◽  
Surface Nanostructuring

Erratum to “Laser surface nanostructuring for reliable Si3N4/Si3N4 and Si3N4/Invar joined components” [Ceram. Int. 44 (2018) 12081–12087]

2018 ◽  
Vol 44 (16) ◽  
pp. 20596-20597
Author(s):  
Milena Salvo ◽  
Valentina Casalegno ◽  
Manuela Suess ◽  
Laura Gozzelino ◽  
Christian Wilhelmi
Keyword(s):  
Laser Surface ◽  
Surface Nanostructuring

Optical and Wetting Properties of Femtosecond Laser Nanostructured Materials

2011 ◽  
Vol 14 ◽  
pp. 57-67 ◽  
Author(s):  
A.Y. Vorobyev ◽  
Chun Lei Guo
Keyword(s):  
Femtosecond Laser ◽  
Surface Structure ◽  
Nanostructured Materials ◽  
Wavelength Range ◽  
Laser Surface ◽  
Surface Structures ◽  
Capillary Effect ◽  
Liquid Motion ◽  
Surface Nanostructuring ◽  
Wetting Properties

We modify optical and wetting properties of solids using a femtosecond laser surface nanostructuring technique. We demonstrate that this technique allows creating black and color metals. Absorptance of black titanium created in our study is measured to be about 90-97% over a broad wavelength range from the ultraviolet to infrared. Moreover, our technique can be also used for modifying wetting properties of solids. Here, we create a novel surface structure that transforms regular silicon to superwicking. This surface structure makes water run vertically uphill in a gravity defying way. Our study of the liquid motion shows that the extraordinarily strong self-propelling motion of water is due to a capillary effect from the surface structures we created.

Laser surface nanostructuring for reliable Si3N4/Si3N4 and Si3N4/Invar joined components

2018 ◽  
Vol 44 (11) ◽  
pp. 12081-12087 ◽  
Author(s):  
Milena Salvo ◽  
Valentina Casalegno ◽  
Manuela Suess ◽  
Laura Gozzelino ◽  
Christian Wilhelmi
Keyword(s):  
Laser Surface ◽  
Surface Nanostructuring

Laser surface nanostructuring of platinum

2011 ◽  
Author(s):  
M. Zamfirescu ◽  
A. Dinescu ◽  
F. Craciunoiu ◽  
Catalina Radu ◽  
R. Stoian
Keyword(s):  
Laser Surface ◽  
Surface Nanostructuring

Microstructures of Laser Processed Fe-Cr Surface Alloys

1981 ◽  
Vol 39 ◽  
pp. 328-329
Author(s):  
P. A. Molian ◽  
K. H. Khan ◽  
W. E. Wood
Keyword(s):  
Cooling Rate ◽  
Pure Iron ◽  
Continuous Wave ◽  
Laser Surface ◽  
Material Surface ◽  
Constitution Diagram ◽  
Incident Power ◽  
Surface Alloying ◽  
Laser Surface Alloying ◽  
Spot Diameter

In recent years, the effects of chromium on the transformation characteristics of pure iron and the structures produced thereby have been extensively studied as a function of cooling rate. In this paper, we present TEM observations made on specimens of Fe-10% Cr and Fe-20% Cr alloys produced through laser surface alloying process with an estimated cooling rate of 8.8 x 104°C/sec. These two chromium levels were selected in order to study their phase transformation characteristics which are dissimilar in the two cases as predicted by the constitution diagram. Pure iron (C<0.01%, Si<0.01%, Mn<0.01%, S=0.003%, P=0.008%) was electrodeposited with chromium to the thicknesses of 40 and 70μm and then vacuum degassed at 400°F to remove the hydrogen formed during electroplating. Laser surface alloying of chromium into the iron substrate was then performed employing a continuous wave CO2 laser operated at an incident power of 1200 watts. The laser beam, defocussed to a spot diameter of 0.25mm, scanned the material surface at a rate of 30mm/sec, (70 ipm).

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