scholarly journals Role of particle shape anisotropy on crack formation in drying of colloidal suspension

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Venkateshwar Rao Dugyala ◽  
Hisay Lama ◽  
Dillip K. Satapathy ◽  
Madivala G. Basavaraj
Keyword(s):  
Particle Shape ◽  
Crack Formation ◽  
Colloidal Suspension ◽  
Shape Anisotropy

Increasing aspect ratio of particles suppresses buckling in shells formed by drying suspensions

Soft Matter ◽  
2020 ◽  
Vol 16 (42) ◽  
pp. 9643-9647
Author(s):  
Ahmed Al Harraq ◽  
Bhuvnesh Bharti
Keyword(s):  
Aspect Ratio ◽  
Particle Shape ◽  
Colloidal Suspensions ◽  
Shape Anisotropy

The article identifies the role of particle shape anisotropy in suppressing the buckling of drying droplets of colloidal suspensions.

Magnetic tunneling junction based magnetic field sensors: Role of shape anisotropy versus free layer thickness

2011 ◽  
Vol 109 (7) ◽  
pp. 07C731 ◽  
Author(s):  
Lubna R. Shah ◽  
Nupur Bhargava ◽  
Sangcheol Kim ◽  
Ryan Stearrett ◽  
Xiaoming Kou ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Layer Thickness ◽  
Shape Anisotropy ◽  
Tunneling Junction ◽  
Free Layer ◽  
Magnetic Field Sensors ◽  
Magnetic Tunneling Junction ◽  
Magnetic Tunneling

scholarly journals Formation of stable aggregates by fluid-assembled solid bridges

2020 ◽  
Author(s):  
Douglas Jerolmack ◽  
Ali Seiphoori
Keyword(s):  
Thermal Equilibrium ◽  
Colloidal Suspension ◽  
Wetting And Drying ◽  
Atomic Force ◽  
Capillary Bridges ◽  
Industrial Materials ◽  
Capillary Pressures ◽  
Microfluidics Channel ◽  
Particle Weight

<p>Earh's surface is covered with soil; particulate mixtures subject to cycles of wetting and drying. The role of this transient hydrodynamic forcing in creating and destroying aggregates is virtually unexplored. We examine this process at the grain scale. When a colloidal suspension is dried, capillary pressure may overwhelm repulsive electrostatic forces, assembling aggregates that are out of thermal equilibrium. This poorly understood process confers cohesive strength to many geological and industrial materials. Here we observe evaporation-driven aggregation of natural and synthesized particulates, and then probe their stability under rewetting using a microfluidics channel as a flume to determine the entrainment threshold. We also directly measure bonding strength of aggregates using an atomic force microscope. Cohesion arises at a common length scale (~5 microns), where interparticle attractive forces exceed particle weight. In polydisperse mixtures, smaller particles condense within shrinking capillary bridges to build stabilizing “solid bridges” among larger grains. This dynamic repeats across scales forming remarkably strong, hierarchical clusters, whose cohesion derives from grain size rather than mineralogy. Transient capillary pressures are even sufficiently large to sinter the smallest particles together. These results may help to understand the strength and erodibility of natural soils, and other polydisperse particulates that experience transient hydrodynamic forces.</p>

Influence of the nanostructure of the functional layers of a multilayer coating on the wear of a carbide tool

2021 ◽  
pp. 332-336
Author(s):  
A.A. Vereshchaka ◽  
V.P. Tabakov
Keyword(s):  
Fracture Resistance ◽  
Crack Formation ◽  
Multilayer Coating ◽  
Multilayer Coatings ◽  
Carbide Tool ◽  
Scratch Testing ◽  
Nanolayer Thickness

The results of studies of the effect of nanolayer thickness on the wear of carbide tools are presented. The effect of nanolayer thicknesses on microhardness and fracture resistance of a multilayer coating during scratch testing is shown. The role of nanostructure in the processes of crack formation in multilayer coatings during cutting is revealed.

Role of particle shape on efficient and organ-based drug delivery

2020 ◽  
Vol 122 ◽  
pp. 109353 ◽  
Author(s):  
Sara Nejati ◽  
Elham Mohseni Vadeghani ◽  
Sajedeh Khorshidi ◽  
Akbar Karkhaneh
Keyword(s):  
Drug Delivery ◽  
Particle Shape

Tunnel magnetoresistance of compacted CrO2 powders with particle shape anisotropy

2015 ◽  
Vol 79 (6) ◽  
pp. 789-793 ◽  
Author(s):  
N. V. Dalakova ◽  
E. Yu. Beliayev ◽  
O. M. Osmolovskaya ◽  
M. G. Osmolovsky ◽  
V. A. Gorelyy
Keyword(s):  
Particle Shape ◽  
Shape Anisotropy ◽  
Tunnel Magnetoresistance

A role of δ-ferrite in edge-crack formation during hot-rolling of austenitic stainless steels

1997 ◽  
Vol 37 (8) ◽  
pp. 1231-1235 ◽  
Author(s):  
F. Czerwinski ◽  
A. Brodtka ◽  
J.Y. Cho ◽  
A. Zielinska-Lipiec ◽  
J.H. Sunwoo ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Hot Rolling ◽  
Edge Crack ◽  
Crack Formation ◽  
Austenitic Stainless Steels ◽  
Δ Ferrite
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