scholarly journals Filling-and-Dragging Technique for A Particle-Entrapment Using Triangular Microwells

2020 ◽  
Vol 24 (2) ◽  
pp. 63-74
Author(s):  
Phakpoom Yingprathanphon ◽  
Tepparit Wongpakham ◽  
Werayut Srituravanich ◽  
Alongkorn Pimpin
Keyword(s):  
2016 ◽  
Vol 60 (2) ◽  
pp. 373-382 ◽  
Author(s):  
V. Strubel ◽  
N. Fillot ◽  
F. Ville ◽  
J. Cavoret ◽  
P. Vergne ◽  
...  

Author(s):  
Guillermo E Morales Espejel ◽  
Antonio Gabelli

In this paper, a complete engineering model for particle entrapment in rolling bearings and consequences in raceway indentations is presented. The attention is focussed on the conditions for particle entrapment once the particles are in contact with the two rolling surfaces. After the entrapment, the model follows the particle trajectory within the contact. The particle deformation is then calculated and finally an elastic-plastic contact model is applied to simulate the eventual raceway indentation. Laboratory experiments with a single contact device as well as full bearing tests were performed to validate the models. The comparisons between model and experiments show good agreement in the number and type of indentations.


1992 ◽  
Vol 71 (6) ◽  
pp. 2937-2944 ◽  
Author(s):  
D. A. Brown ◽  
P. Sferlazzo ◽  
S. E. Beck ◽  
J. F. O’Hanlon

Geoderma ◽  
2013 ◽  
Vol 207-208 ◽  
pp. 244-255 ◽  
Author(s):  
S. Vingiani ◽  
F. Terribile ◽  
P. Adamo
Keyword(s):  

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1758
Author(s):  
Mika Sahlman ◽  
Jari Aromaa ◽  
Mari Lundström

Nickel behavior has a significant role in the electrorefining of copper, and although it has been extensively studied from the anode and electrolyte point of view over the past decades, studies on nickel contamination at the cathode are limited. In the current paper, three possible contamination mechanisms—particle entrapment, electrolyte inclusions and co-electrodeposition—were investigated. Copper electrorefining (Cu-ER) was conducted at the laboratory scale, and the cathodes were analyzed by scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS) and flame atomic absorption spectroscopy (AAS). Particle entrapment was studied by adding NiO and Fe2O3 to the system to simulate nickel anode slime, and the experiments were replicated with industrial anode slime material. The possibility of electrolyte entrapment due to nodulation was explored through the addition of graphite to produce nodules on the cathode. Co-electrodeposition was analyzed by experiments that utilized a Hull cell. The results indicate that particle entrapment can occur at the cathode and is a major source of the nickel contamination in Cu-ER, whereas nickel compounds were not shown to promote nodulation. Inclusions of bulk electrolytes within the surface matrix were observed, proving that electrolyte entrapment is possible. As co-electrodeposition of Ni in Cu-ER is thermodynamically unlikely, these experimental results also verify that it does not occur to any significant extent.


Lubricants ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 60
Author(s):  
George K. Nikas

A metallic particle passing through concentrated rolling-sliding contacts is often linked to surface damage for particles larger than the available gap. At the instant of particle pinching, force balancing dictates particle entrapment and passing through the contact or rejection. It is vital to include all major forces in this process. This study revisits the analytical entrapment model previously published by the author for spherical micro-particles by incorporating a force so far overlooked in related studies, namely the van der Waals intermolecular force and, additionally, surface roughness effects. In conjunction with particle mechanical and fluid forces, this provides an almost complete set to use for correct force balancing. A parametric analysis shows the effect of several geometrical, mechanical, rheological, and surface parameters on spherical particle entrapment and reveals the significance of the van der Waals force for particles smaller than about 5–10 μm in diameter.


Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1069 ◽  
Author(s):  
István Rigó ◽  
Miklós Veres ◽  
Orsolya Hakkel ◽  
Péter Fürjes

To increase the local field intensity of Raman scattering, gold nanospheres were entrapped in gold coated periodic inverse pyramid structures, being SERS substrates by themselves. The applicability of this complex structure for sensitive molecule detection was proved by comparison of the detected Raman signals with and without particle entrapment. Moreover its relevance in molecular diagnostic was also proposed considering the specific surface functionalisation of the gold nanoparticles.


2008 ◽  
Vol 10 (6) ◽  
pp. 063030 ◽  
Author(s):  
Sergey Shklyaev ◽  
Arthur V Straube

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