Investigation on the morphology and surface free energy of the AlGaN thin film

2015 ◽  
Vol 653 ◽  
pp. 162-167 ◽  
Author(s):  
Soner Özen ◽  
Volkan Şenay ◽  
Suat Pat ◽  
Şadan Korkmaz
Keyword(s):  
Thin Film ◽  
Free Energy ◽  
Surface Free Energy

INFLUENCE OF SURFACE FREE ENERGY ON ADHESION OF CrN THIN FILM DEPOSITED BY AIP METHOD

2012 ◽  
Vol 06 ◽  
pp. 509-514 ◽  
Author(s):  
HIKARU NOUDA ◽  
HIROATSU ODA ◽  
DAISUKE YONEKURA ◽  
RI-ICHI MURAKAMI
Keyword(s):  
Thin Film ◽  
Free Energy ◽  
Surface Free Energy ◽  
High Speed ◽  
Gas Flow ◽  
Sessile Drop ◽  
Ion Bombardment ◽  
Polar Component ◽  
Scratch Testing ◽  
The Relationship

The purpose of this study is to examine the relationship between adhesion of CrN thin film and the surface free energy of substrate. CrN film was deposited on JIS SKH2 high speed tool steel by arc ion plating (AIP) method. The surface free energy of the substrate was measured with/without ion bombardment process using nitrogen and argon gas under various gas flow rate before CrN deposition. The surface free energy was measured by the sessile drop method using distilled water and methylene iodide. The adhesion was evaluated by scratch testing and the relationship between a critical load and the surface free energy in each ion bombardment condition was discussed. As a result, it was found that the adhesion increased with decreasing the surface free energy, in particular the polar component strongly affects the adhesion.

Effect of surface free energy in gate dielectric in pentacene thin-film transistors

2006 ◽  
Vol 89 (11) ◽  
pp. 112126 ◽  
Author(s):  
Wei-Yang Chou ◽  
Chia-Wei Kuo ◽  
Horng-Long Cheng ◽  
Yi-Ren Chen ◽  
Fu-Ching Tang ◽  
...  
Keyword(s):  
Thin Film ◽  
Free Energy ◽  
Surface Free Energy ◽  
Thin Film Transistors ◽  
Gate Dielectric ◽  
Effect Of Surface

Specific Surface Free Energy of Ruby Thin Film Grown on Sapphire Single Crystals Studied by Contact Angle of Liquid Droplet

2007 ◽  
Vol 1054 ◽  
Author(s):  
Takaomi Suzuki ◽  
Shintaro Sugane ◽  
Miki Hidaka ◽  
Katsuya Teshima ◽  
Shuji Oishi
Keyword(s):  
Thin Film ◽  
Contact Angle ◽  
Free Energy ◽  
Specific Surface ◽  
Surface Free Energy ◽  
Sapphire Substrate ◽  
Evaporation Rate ◽  
Liquid Droplet ◽  
Contact Angles ◽  
Crystal Surfaces

ABSTRACTRuby thin film was grown on sapphire substrate by evaporation method of MoO3 flux. Small amount of Na2CO3 was added in order to decrease the evaporation rate of flux. The contact angles of liquids and crystal surfaces were measured for water and formamide droplets, and the specific surface free energy of each face of the crystal was calculated using Fowkes approximation and Wu's mean equations. The growth hillocks on the synthesized thin film were observed. The addition of Na2CO3 incrased the density of hillocks and the specific surface free energy was larger for the ruby thin film, which has larger number of hillocks.

Smectic A-Smectic B interface : faceting and surface free energy measurement

1989 ◽  
Vol 50 (24) ◽  
pp. 3527-3534 ◽  
Author(s):  
P. Oswald ◽  
F. Melo ◽  
C. Germain
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Energy Measurement ◽  
Smectic A

Examination of the lubricant storing and releasing ability of thermally sprayed surfaces

2011 ◽  
Vol 2 (2) ◽  
pp. 101-105
Author(s):  
L. Fazekas ◽  
Z. S. Tiba ◽  
G. Kalácska
Keyword(s):  
Free Energy ◽  
Surface Energy ◽  
Surface Free Energy ◽  
Essential Role ◽  
Index Number ◽  
Adhesion Ability ◽  
Thermally Sprayed ◽  
Proper Operation

Abstract The lubricant storing and releasing ability of the thermally sprayed surfaces plays an essential role in the proper operation of the components. In the case of porous sprayed surfaces the lubricant storing and releasing ability depends mainly on porosity and the surface energy (adhesion susceptibility). The adhesion ability can also be expressed indirectly with an index number that is by determining the surface free energy.

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