Track topics on Twitter Track topics that are important to you
Nanoscale metallic glasses (MGs) are frequently used in experimental and computational studies to probe the deformation mechanisms in amorphous metals. Potential consequences of the significant surface to volume ratio in these extremely small materials, nevertheless, are not well understood. Here, using molecular dynamics simulations and novel selective 3D visualization, we show that significant irreversible atomic shear strain condenses on the 3D surface of these materials under low uniaxial stress, while the interior atoms are bearing much lower, mostly reversible shear strain. This is observed for various sample geometries, dimensions, strain rates and temperatures, and attributable to the correlations of atomic shear strain with atomic potential energy and coordination number. The results reveal the profound influence of the surface on the strain partitioning in nanoscale MGs across the 3D volume, critical to the initiation and continuation of plasticity.
This article was published in the following journal.
Name: Journal of physics. Condensed matter : an Institute of Physics journal
Enhancing the thermal efficiency of a broad range of condenser devices requires means of achieving sustainable dropwise condensation on metallic surfaces, where heat transfer can be further enhanced, ...
A surface relaxation model is established to study the elastic properties of nanoscale structures. This model predicts coordination-dependent strain at the surface and thickness-dependent stiffness of...
Twin boundary can both strengthen and soften nanocrystalline metals and has been an important path for improving the strength and ductility of nano materials. Here, using in-lab developed double-tilt ...
To evaluate the effect of different surface treatments and bonding modalities on the shear bond strength (SBS) between metallic orthodontic brackets and zirconia crowns.
Considering that micromotions generated at the bone-implant interface under physiological loading introduce mechanical strain on the tissue and surface of the implant and that strain can be introduced...
Does the use of an anti-shear mattress overlay placed on a pre-hospital transport stretcher reduce shear forces and pressure on the skin, and increase patient comfort as compared to standa...
The goal of this study is the evaluation of an atomic magnetometer that is practical for human biomagnetism studies. We have built a device that has the necessary sensitivity, and will be ...
The researchers are trying to see whether contrast-enhanced ultrasonography, shear wave elastography, strain imaging, and 3-D volume ultrasonography improves arterial wall visualization an...
The purpose of this study is to test metallic markers in the breast tissue after breast conserving surgery and to observe the metallic markers' stability in the breast for use as tumor bed...
Ehlers-Danlos Syndrome (EDS) is an inherited disease of collagen, found in connective tissues, such as skin. EDS patients suffer from joint and skin problems (skin hyperextensibility, join...
A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98.
A metallic element that has the atomic symbol Bi, atomic number 83 and atomic weight 208.98.
A metallic element with the atomic symbol Ir, atomic number 77, and atomic weight 192.22.
A metallic element that has the atomic symbol Mg, atomic number 12, and atomic weight 24.31. It is important for the activity of many enzymes, especially those involved in OXIDATIVE PHOSPHORYLATION.
A metallic element that has the atomic symbol Sb, atomic number 51, and atomic weight 121.75. It is used as a metal alloy and as medicinal and poisonous salts. It is toxic and an irritant to the skin and the mucous membranes.
Adhd Anorexia Depression Dyslexia Mental Health Psychiatry Schizophrenia Stress Mental health, although not being as obvious as physical health, is very important, causing great unhappiness to those affected, causing add...
Stress is caused by your perception of situations around you and then the reaction of your body to them. The automatic stress response to unexpected events is known as 'fight or flight'. Discovered by Walter Cannon in 1932, it is the release of h...