Protonation of graphene oxide electrolyte during electrophoresis and effects on deposited film properties

Author(s):  
Buddini Nissanka ◽  
Navoda Jayawardana ◽  
Dilushan R. Jayasundara
Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10172-10177 ◽  
Author(s):  
Szymon Sollami Delekta ◽  
Karin H. Adolfsson ◽  
Nejla Benyahia Erdal ◽  
Minna Hakkarainen ◽  
Mikael Östling ◽  
...  

Ultrathin all-solid-state microsupercapacitors with graphene electrodes and a graphene oxide electrolyte are fabricated entirely by inkjet printing.


Author(s):  
Baoqing Zhang ◽  
Qinghua Wang ◽  
Ninggang Shen ◽  
Hongtao Ding

The mechanical ruling process using a diamond tool is an important method for fabrication of low-density diffraction gratings. In mechanical ruling, a deposited film of aluminum or gold is mechanically burnished by the diamond tool to form equally spaced and high-quality grooves. The goal of this work is to evaluate the effects of Al film properties and ruling tool loading conditions on the resultant groove formation. The microstructure of the Al film is first studied using scanning electron microscope (SEM) and X-ray diffraction (XRD). The mechanical properties of the Al film are measured by nano-indentation and scratch tests. Mechanical ruling experiments are then carried out on a 10.5 μm thick Al film under various ruling loads ranging from 20 to 105 g. The groove geometry is investigated, and the tool wear of the diamond tool is inspected after the mechanical ruling tests. Finally, a three-dimensional (3D) thermomechanical-coupled finite-element (FE) model is developed to predict the deformation and temperature fields for the micron-scale groove formation by incorporating the Al film properties and a strain-gradient plasticity for modeling the size effect. Multiruling pass simulations are performed to analyze the groove formation under different loading conditions. Through comparison of simulation results with experimental measurement, this model is demonstrated as a useful numerical tool for modeling the mechanical ruling process using a diamond tool.


2016 ◽  
Vol 6 (14) ◽  
pp. 1600476 ◽  
Author(s):  
Jing Zhang ◽  
Jing Fu ◽  
Xueping Song ◽  
Gaopeng Jiang ◽  
Hadis Zarrin ◽  
...  

2015 ◽  
Vol 51 (100) ◽  
pp. 17760-17763 ◽  
Author(s):  
Yufei Wang ◽  
Xuehua Zhang ◽  
Dan Li

The configuration of reduced graphene oxide sheets in an aqueous dispersion is found to be dynamic, showing a remarkable impact on their thin film properties.


2020 ◽  
Vol 269 ◽  
pp. 116494
Author(s):  
Abhijeet Ojha ◽  
Helen Ibrahim ◽  
Natalia Alyabyeva ◽  
Rémi Lazzari ◽  
Michel Goldmann ◽  
...  

2011 ◽  
Vol 179-180 ◽  
pp. 339-344
Author(s):  
Yu Sen Yang ◽  
Wesley Huang ◽  
Ming Shyan Huang ◽  
Cheng Fong Huang

Sticking problems in injection molds are a significant challenge in product quality control. Molds are usually coated with a surface ceramic layer to prevent sticking problems. This study presents two films deposited on light-guide plate microinjection molds using an unbalanced magnetron sputtering process to investigate the anti-sticking property of molds. The deposited film materials include chromium nitride (Cr-N) and zirconium containing diamond-like carbon (Zr-DLC). The anti-stick film properties examined here include water contact angles, the coefficients of friction, as well as product flatness for the practical injection process. The results show that the performance of Cr-N films involve water contact angles at 111.4 degrees and a coefficient of friction at 0.742, respectively. The performances of Zr-DLC films involve water contact angles at 86.2 degrees and a coefficient of friction at 0.106, respectively. For the practical injection process, the deposited Cr-N films have better anti-sticking property than do the deposited Zr-DLC films.


Soft Matter ◽  
2010 ◽  
Vol 6 (24) ◽  
pp. 6096 ◽  
Author(s):  
Laura J. Cote ◽  
Jaemyung Kim ◽  
Zhen Zhang ◽  
Cheng Sun ◽  
Jiaxing Huang

Author(s):  
Jufni Abdulla ◽  
Jin Cao ◽  
Dongdong Zhang ◽  
Xinyu Zhang ◽  
Chakrit Sriprachuabwong ◽  
...  

1996 ◽  
Vol 446 ◽  
Author(s):  
Y. Uchida ◽  
S. Takei ◽  
M. Matsumura

AbstractAnnealing effects have been investigated for the SiO2 films deposited from a Tetra‐Iso‐Cyanate‐Silane and Tertiary‐Alkyl‐Amine gas mixture in order to stabilize its desirable hydrogen‐free property. It was found that O3 annealing eliminates effectively the NCO‐group from the deposited film, resulting in the improved water resistance characteristics, and that HF changes the Si‐NCO bonds to Si‐F bonds resulting also in improved film properties.


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