Effect of Surface Coverage and Composition on the Stability and Interfacial Dipole of Functionalized Silicon

2017 ◽  
Vol 121 (21) ◽  
pp. 11312-11318 ◽  
Author(s):  
Kara Kearney ◽  
Ashwathi Iyer ◽  
Angus Rockett ◽  
Aleksandar Staykov ◽  
Elif Ertekin
Keyword(s):  
Surface Coverage ◽  
The Stability ◽  
Effect Of Surface

Insight into the effect of surface coverage and structure over different Co surfaces on the behaviors of H2 adsorption and activation

2016 ◽  
Vol 41 (48) ◽  
pp. 23022-23032 ◽  
Author(s):  
Qiang Wang ◽  
Riguang Zhang ◽  
Litao Jia ◽  
Bo Hou ◽  
Debao Li ◽  
...  
Keyword(s):  
Surface Coverage ◽  
H2 Adsorption ◽  
Insight Into ◽  
Effect Of Surface

scholarly journals Coral-like silicone nanofilament coatings with extremely low ice adhesion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Davide Bottone ◽  
Valentina Donadei ◽  
Henna Niemelä ◽  
Heli Koivuluoto ◽  
Stefan Seeger
Keyword(s):  
Energy Efficient ◽  
Efficient Solution ◽  
Water Repellent ◽  
Cold Environment ◽  
Adhesion Test ◽  
Porous Surfaces ◽  
Water Wettability ◽  
The Stability ◽  
Effect Of Surface ◽  
Ice Adhesion

AbstractPassive icephobic surfaces can provide a cost and energy efficient solution to many icing problems that are currently handled with expensive active strategies. Water-repellent surface treatments are promising candidates for this goal, but commonly studied systems, such as superhydrophobic surfaces and Slippery Liquid Infused Porous Surfaces (SLIPS), still face challenges in the stability and durability of their properties in icing environments. In this work, environmental icing conditions are simulated using an Icing Wind Tunnel, and ice adhesion is evaluated with a Centrifugal Adhesion Test. We show that superhydrophobic coral-like Silicone Nanofilament (SNF) coatings exhibit extremely low ice adhesion, to the point of spontaneous ice detachment, and good durability against successive icing cycles. Moreover, SNFs-based SLIPS show stably low ice adhesion for the whole duration of the icing test. Stability of surface properties in a cold environment is further investigated with water wettability at sub-zero surface temperature, highlighting the effect of surface chemistry on superhydrophobicity under icing conditions.

Effect of Surface Nanomorphology and Interfacial Galvanic Coupling of PEDOT-Titanium Counter Electrodes on the Stability of Dye-Sensitized Solar Cell

2012 ◽  
Vol 12 (8) ◽  
pp. 6340-6345 ◽  
Author(s):  
Asha Anish Madhavan ◽  
Sujith Kalluri ◽  
Anjali Paravannoor ◽  
Sivakumar Nagarajan ◽  
Kavasseri R. V. Subramanian ◽  
...  
Keyword(s):  
Solar Cell ◽  
Dye Sensitized Solar Cell ◽  
Counter Electrodes ◽  
Galvanic Coupling ◽  
Dye Sensitized ◽  
The Stability ◽  
Effect Of Surface

Waters Ecological Reconstruction of Ling Lake Scenic Area in Anqing

2012 ◽  
Vol 253-255 ◽  
pp. 809-816
Author(s):  
Li Hua Zhang ◽  
Bao Hua Zhou
Keyword(s):  
Surface Coverage ◽  
Nature Reserve ◽  
Water Remediation ◽  
Ecological Environment ◽  
Lake Ecosystem ◽  
Main Body ◽  
Landscape Water ◽  
The Stability ◽  
Landscape Ecological ◽  
Ecological Reconstruction

In recent years, the landscape water of Anqing Ling Lake scenic area became severe eutrophication, resulting in the destruction of the ecological balance. The eigenvalues of nature reserve in the wetland along the Yangtze River in Anqing such as the species diversity of Lake Ecosystem, plant community structure and the stability of the ecological environment were simulated in this paper. We proposed the target and principles for the water remediation and landscape ecological reconstruction of Ling Lake scenic area, determined that Trapa Comm, Nelumb Comm, Zizania Comm, Vallisneria Comm and Phragmites Comm should treated as the main body of the ecological reconstruction, discussed the population structure, water surface coverage, ecological and landscape function for each community. Furthermore, we also discussed the request controlling density for phytoplankton and the proportion for the fish fingerlings, as well as the measures for the optimization on ecological reconstruction.

Effect of Surface Roughness and Joint Material on Torque-Tension Relationship in Threaded Fasteners

2005 ◽  
Author(s):  
S. A. Nassar ◽  
T. S. Sun
Keyword(s):  
Surface Roughness ◽  
Load Level ◽  
Friction Torque ◽  
Joint Surface ◽  
Specific Level ◽  
Tightening Torque ◽  
Safety And Reliability ◽  
The Stability ◽  
Engineering Practices ◽  
Effect Of Surface

An experimental study is presented in order to investigate the effect of surface roughness on the torque-tension relationship in bolted assemblies. Three levels of surface roughness are considered for the fastener underhead and the joint surface; namely, low, medium, and high levels of surface roughness. The study is conducted for two joint materials, two fastener classes, and for coarse and fine threads. In this study, the torque-tension data is expressed in terms of the value of the nut factor as well as its scatter. The effect of the number of tightenings on surface roughness and on the torque-tension relationship is investigated as well. The surface roughness is measured before tightening, and after each loosening using a WYKO optical profiling system. An M12 fastener is used in this study. Both fine and coarse threads and fastener material Classes 8.8 and 10.9 for M12 fasteners are used in this study. The torque-tension data is analyzed for both steel and aluminum joints. The safety and reliability of bolted assemblies are mainly determined by the level and the stability of the clamp load provided by the initial tightening of the threaded fastener. The value of initial clamp load, which is achieved by a specific level of tightening torque, is highly sensitive to the friction torque components. This study provides an insight into the reliability of the existing engineering practices for estimating the clamp load level from the tightening torque. Hence, the findings of the study would help enhance the reliability and the safety of bolted assemblies, especially in critical applications.

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