scholarly journals Hydrostatic strain enhancement in laterally confined SiGe nanostripes

2013 ◽  
Vol 88 (11) ◽  
Author(s):  
G. M. Vanacore ◽  
M. Chaigneau ◽  
N. Barrett ◽  
M. Bollani ◽  
F. Boioli ◽  
...  
Keyword(s):  
Hydrostatic Strain

scholarly journals Exchange interactions in europium monochalcogenide magnetic semiconductors and their dependence on hydrostatic strain

2010 ◽  
Vol 81 (15) ◽  
Author(s):  
W. Söllinger ◽  
W. Heiss ◽  
R. T. Lechner ◽  
K. Rumpf ◽  
P. Granitzer ◽  
...  
Keyword(s):  
Magnetic Semiconductors ◽  
Exchange Interactions ◽  
Hydrostatic Strain

Is it constantly possible to penetrate only the anterior vessel wall against hydrostatic strain?

2012 ◽  
Vol 40 (8) ◽  
pp. 2535-2536
Author(s):  
Ho-Geol Ryu ◽  
Seok Ha Yoo ◽  
Jae-Hyon Bahk
Keyword(s):  
Vessel Wall ◽  
Hydrostatic Strain

Comparative study on hydrostatic strain, stress and dislocation density of Al0.3Ga0.7N/GaN heterostructure before and after a-Si3N4 passivation

2015 ◽  
Author(s):  
Syed Mukulika Dinara ◽  
Sanjay Kr. Jana ◽  
Partha Mukhopadhyay ◽  
Saptarsi Ghosh ◽  
Sekhar Bhattacharya ◽  
...  
Keyword(s):  
Dislocation Density ◽  
Comparative Study ◽  
Before And After ◽  
Strain Stress ◽  
Hydrostatic Strain ◽  
Gan Heterostructure

scholarly journals Formation of Interstitial Dislocation Loops by Irradiation in Alpha-Iron under Strain: A Molecular Dynamics Study

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 317
Author(s):  
Mohammad Bany Salman ◽  
Mehmet Emin Kilic ◽  
Mosab Jaser Banisalman
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dislocation Loop ◽  
Dynamics Simulation ◽  
Peak Time ◽  
Dislocation Loops ◽  
Alpha Iron ◽  
Static Strain ◽  
Hydrostatic Strain ◽  
Threshold Displacement

The present work reports the formation of an interstitial dislocation loop with a lower primary knock-on atom (PKA) energy in alpha-iron under strain conditions by the use of molecular dynamics simulation. The study was conducted using a PKA energy of 1~10 keV and hydro-static strain from −1.4 to 1.6%. The application of 1.6% hydrostatic strain results in the formation of ½<111> dislocation loop with a low PKA of 3 keV. This result was associated with a threshold displacement energy decrement when moving from compression to tension strain, which resulted in more Frenkel pairs initiated at peak time. Furthermore, many of the initiated defects were energetically favorable by 2 eV in the form of the interstitial dislocation loop rather than a mono defect.

Full local elastic strain tensor from Laue microdiffraction: simultaneous Laue pattern and spot energy measurement

2011 ◽  
Vol 44 (4) ◽  
pp. 688-696 ◽  
Author(s):  
Odile Robach ◽  
Jean-Sébastien Micha ◽  
Olivier Ulrich ◽  
Patrice Gergaud
Keyword(s):  
Strain Tensor ◽  
Polycrystalline Sample ◽  
Laue Pattern ◽  
Test Cases ◽  
Hydrostatic Strain ◽  
Measurement Strategies ◽  
Elastic Strain Tensor ◽  
Point Detector ◽  
Beam Technique ◽  
Laue Microdiffraction

In sample-scanning Laue microdiffraction, the local crystal orientation and local deviatoric strain tensor are obtained by illuminating the polycrystalline sample with a broadband `white' (5–30 keV) X-ray microbeam and analyzing the spot positions in the resulting local Laue pattern. Mapping local hydrostatic strain is usually slower, owing to the need to alternate between white and tunable-energy monochromatic microbeams. A technique has been developed to measure hydrostatic strain while keeping the white beam. The energy of one of the Laue spots of the grain of interest is measured using an energy-dispersive point detector, while simultaneously recording the Laue pattern on the two-dimensional detector. The experimental spot energy,Eexp, is therefore measured at the same time asEtheor, the theoretical spot energy for zero hydrostatic strain, which is derived from the analysis of the Laue pattern. The performance of the technique was compared with that of the monochromatic beam technique in two test cases: a Ge single crystal and a micrometre-sized UO2grain in a polycrystal. Accuracies on the hydrostatic strain Δa/aof ±0.4 × 10−4and ±1.3 × 10−4were obtained for Ge and UO2, respectively. Measurement strategies to limit the remaining uncertainties onEtheorare discussed.

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