Controlled Free Edge Effects in Surface Wrinkling via Combination of External Straining and Selective O2 Plasma Exposure

Langmuir ◽  
2013 ◽  
Vol 29 (23) ◽  
pp. 7170-7177 ◽  
Author(s):  
Yang Yang ◽  
Xue Han ◽  
Weilian Ding ◽  
Shichun Jiang ◽  
Yanping Cao ◽  
...  
Keyword(s):  
Edge Effects ◽  
Free Edge ◽  
Plasma Exposure ◽  
Surface Wrinkling ◽  
O2 Plasma

Investigation of interface characteristics of Al2O3/Si under various O2 plasma exposure times during the deposition of Al2O3 by PA-ALD

2019 ◽  
Vol 19 (2) ◽  
pp. 155-161 ◽  
Author(s):  
Kwan Hong Min ◽  
Sungjin Choi ◽  
Myeong Sang Jeong ◽  
Min Gu Kang ◽  
Sungeun Park ◽  
...  
Keyword(s):  
Plasma Exposure ◽  
Interface Characteristics ◽  
O2 Plasma

scholarly journals The Degradation of Cellulose by Radio Frequency Plasma

Fibers ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 61 ◽  
Author(s):  
Larissa Shepherd ◽  
Margaret Frey
Keyword(s):  
Power Density ◽  
High Power ◽  
Radio Frequency Plasma ◽  
High Power Density ◽  
Plasma Exposure ◽  
Cellulose Structure ◽  
Structure Degradation ◽  
Frequency Plasma ◽  
Cotton Yarns ◽  
O2 Plasma

This paper describes the results of using oxygen (O2) plasma to treat both greige and scoured cotton yarns to cause significant degradation of cellulose. This study is an effort to reduce hazardous caustic chemicals commonly used to make the cellulose molecule more accessible for uses in such applications as biofuels. Through high power density, 0.46 W/cm2, and the study of varying exposure times, we find longer durations of 30 min to 90 min result in significant cellulose structure degradation. Due to waxes and contaminants found on greige yarns, scoured yarn degradation occurs at shorter exposure times than greige yarns, however, both experience tearing and pitting with longer exposures. This study provides evidence that significant degradation of cellulosic yarns can be achieved through high power density O2 plasma exposure.

Contact Engineering for Dual-Gate MoS2 Transistors Using O2 Plasma Exposure

2019 ◽  
Vol 1 (2) ◽  
pp. 210-219 ◽  
Author(s):  
Pavel Bolshakov ◽  
Christopher M. Smyth ◽  
Ava Khosravi ◽  
Peng Zhao ◽  
Paul K. Hurley ◽  
...  
Keyword(s):  
Plasma Exposure ◽  
Dual Gate ◽  
Contact Engineering ◽  
O2 Plasma

Distribution of conformal contact pressure in spherical plain bearings considering friction and free-edge effects

2020 ◽  
pp. 135065012097551
Author(s):  
Li Yuan ◽  
Han Bao ◽  
Xuefeng Yao ◽  
Jianguo Lu ◽  
Jie Liu
Keyword(s):  
Finite Element ◽  
Contact Pressure ◽  
Contact Stress ◽  
Edge Effects ◽  
Compressive Strain ◽  
Circumferential Stress ◽  
Free Edge ◽  
Contact Theory ◽  
Theoretical Methods ◽  
Conformal Contact

The pressure distribution of conformal contact in spherical plain bearings is studied adopting both theoretical methods and finite element simulations. The effects of normal loads and friction coefficients on the distribution of both axial and circumferential contact stress are investigated. The results show that the circumferential stress can be exactly described with the complete spherical conformal contact theory while the axial one presents strong free-edge effects, mainly caused by the compressive strain. In addition, the distribution of contact stress tends to be uniform with the increase of the load and the friction coefficient, referring to a decrease of contact pressure in the central region and a rise on both edges of the outer ring, which can be attributed to the obstruction effects of friction on the deformation of bearings and the corresponding alteration of contact area.

scholarly journals Three-Dimensional Investigation of Free-Edge Effects in Laminate Composites Using X-ray Tomography and Digital Volume Correlation

2014 ◽  
Vol 55 (1) ◽  
pp. 301-311 ◽  
Author(s):  
P. Lecomte-Grosbras ◽  
J. Réthoré ◽  
N. Limodin ◽  
J.-F. Witz ◽  
M. Brieu
Keyword(s):  
Edge Effects ◽  
Three Dimensional ◽  
Free Edge ◽  
Digital Volume Correlation ◽  
Laminate Composites ◽  
X Ray

Parametric Studies for Free-edge Effects of Corrugated Laminates

2018 ◽  
Vol 2018.56 (0) ◽  
pp. 321
Author(s):  
Shuhei YOKOYAMA ◽  
Shinya HONDA ◽  
Katsuhiko SASAKI ◽  
Ryo TAKEDA ◽  
Gerald KRESS ◽  
...  
Keyword(s):  
Edge Effects ◽  
Free Edge ◽  
Parametric Studies
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