scholarly journals Mid-infrared waveguiding in three-dimensional microstructured optical waveguides fabricated by femtosecond-laser writing and phosphoric acid etching

2020 ◽  
Vol 8 (3) ◽  
pp. 257 ◽  
Author(s):  
Jinman Lv ◽  
Binbin Hong ◽  
Yang Tan ◽  
Feng Chen ◽  
Javier Rodríguez Vázquez de Aldana ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Phosphoric Acid ◽  
Optical Waveguides ◽  
Three Dimensional ◽  
Acid Etching ◽  
Laser Writing ◽  
Mid Infrared ◽  
Phosphoric Acid Etching

scholarly journals Three-dimensional dielectric crystalline waveguide beam splitters in mid-infrared band by direct femtosecond laser writing

2014 ◽  
Vol 22 (25) ◽  
pp. 31293 ◽  
Author(s):  
Ruiyun He ◽  
Irene Hernández-Palmero ◽  
Carolina Romero ◽  
Javier R. Vázquez de Aldana ◽  
Feng Chen
Keyword(s):  
Femtosecond Laser ◽  
Three Dimensional ◽  
Infrared Band ◽  
Laser Writing ◽  
Mid Infrared ◽  
Beam Splitters

scholarly journals Four chemical methods of porcelain conditioning and their influence over bond strength and surface integrity

2015 ◽  
Vol 20 (4) ◽  
pp. 51-56 ◽  
Author(s):  
João Paulo Fragomeni Stella ◽  
Andrea Becker Oliveira ◽  
Lincoln Issamu Nojima ◽  
Mariana Marquezan
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Surface Integrity ◽  
Hydrofluoric Acid ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Acid Etching ◽  
Ceramic Surface ◽  
Surface Conditioning ◽  
Phosphoric Acid Etching

OBJECTIVE: To assess four different chemical surface conditioning methods for ceramic material before bracket bonding, and their impact on shear bond strength and surface integrity at debonding.METHODS: Four experimental groups (n = 13) were set up according to the ceramic conditioning method: G1 = 37% phosphoric acid etching followed by silane application; G2 = 37% liquid phosphoric acid etching, no rinsing, followed by silane application; G3 = 10% hydrofluoric acid etching alone; and G4 = 10% hydrofluoric acid etching followed by silane application. After surface conditioning, metal brackets were bonded to porcelain by means of the Transbond XP system (3M Unitek). Samples were submitted to shear bond strength tests in a universal testing machine and the surfaces were later assessed with a microscope under 8 X magnification. ANOVA/Tukey tests were performed to establish the difference between groups (α= 5%).RESULTS: The highest shear bond strength values were found in groups G3 and G4 (22.01 ± 2.15 MPa and 22.83 ± 3.32 Mpa, respectively), followed by G1 (16.42 ± 3.61 MPa) and G2 (9.29 ± 1.95 MPa). As regards surface evaluation after bracket debonding, the use of liquid phosphoric acid followed by silane application (G2) produced the least damage to porcelain. When hydrofluoric acid and silane were applied, the risk of ceramic fracture increased.CONCLUSIONS: Acceptable levels of bond strength for clinical use were reached by all methods tested; however, liquid phosphoric acid etching followed by silane application (G2) resulted in the least damage to the ceramic surface.

scholarly journals Enamel bonding of self-etching and phosphoric acid-etching orthodontic adhesives in simulated clinical conditions: Debonding force and enamel surface

2009 ◽  
Vol 28 (4) ◽  
pp. 419-425 ◽  
Author(s):  
Shinya HORIUCH ◽  
Kazuyuki KANEKO ◽  
Hiroko MORI ◽  
Emi KAWAKAMI ◽  
Takashi TSUKAHARA ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Enamel Surface ◽  
Acid Etching ◽  
Orthodontic Adhesives ◽  
Clinical Conditions ◽  
Phosphoric Acid Etching

scholarly journals Low-repetition rate femtosecond laser writing of optical waveguides in KTP crystals: analysis of anisotropic refractive index changes

2015 ◽  
Vol 23 (12) ◽  
pp. 15343 ◽  
Author(s):  
Muhammad Ali Butt ◽  
Huu-Dat Nguyen ◽  
Airán Ródenas ◽  
Carolina Romero ◽  
Pablo Moreno ◽  
...  
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Repetition Rate ◽  
Optical Waveguides ◽  
Laser Writing ◽  
Index Changes

scholarly journals Three-dimensional direct femtosecond laser writing of second-order nonlinearities in glass

2012 ◽  
Vol 37 (6) ◽  
pp. 1029 ◽  
Author(s):  
Jiyeon Choi ◽  
Matthieu Bellec ◽  
Arnaud Royon ◽  
Kevin Bourhis ◽  
Gautier Papon ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Three Dimensional ◽  
Second Order ◽  
Laser Writing
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