Determination of lattice plane curvature and dislocation Burgers vector density in crystals by rocking curve imaging technique

2003 ◽  
Author(s):  
Claudio Ferrari ◽  
Nicola Verdi ◽  
Daniel Luebbert ◽  
Dusan Korytar ◽  
Petr Mikulik ◽  
...  
Keyword(s):  
Imaging Technique ◽  
Lattice Plane ◽  
Rocking Curve ◽  
Burgers Vector ◽  
Vector Density

Determination of the Burgers vector of a dislocation in a Fe-Mn alloy by weak-beam image in HVEM

1978 ◽  
Vol 36 (1) ◽  
pp. 330-331
Author(s):  
Y. Ishida ◽  
H. Ishida ◽  
K. Kohra ◽  
H. Ichinose
Keyword(s):  
High Order ◽  
Simulation Technique ◽  
The Other ◽  
Image Simulation ◽  
Diffraction Vector ◽  
Burgers Vector ◽  
Weak Beam ◽  
Beam Image ◽  
Edge Component

IntroductionA simple and accurate technique to determine the Burgers vector of a dislocation has become feasible with the advent of HVEM. The conventional image vanishing technique(1) using Bragg conditions with the diffraction vector perpendicular to the Burgers vector suffers from various drawbacks; The dislocation image appears even when the g.b = 0 criterion is satisfied, if the edge component of the dislocation is large. On the other hand, the image disappears for certain high order diffractions even when g.b ≠ 0. Furthermore, the determination of the magnitude of the Burgers vector is not easy with the criterion. Recent image simulation technique is free from the ambiguities but require too many parameters for the computation. The weak-beam “fringe counting” technique investigated in the present study is immune from the problems. Even the magnitude of the Burgers vector is determined from the number of the terminating thickness fringes at the exit of the dislocation in wedge shaped foil surfaces.

Lattice-constant and stress measurement in single crystals: a new method

2005 ◽  
Vol 38 (4) ◽  
pp. 678-684 ◽  
Author(s):  
Balder Ortner
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Lattice Constant ◽  
Stress Measurement ◽  
New Method ◽  
Lattice Plane ◽  
X Ray ◽  
Advantages And Disadvantages

A method for the X-ray determination of lattice-plane distances is given. Similar to Bond's method, it is based on the measurement of rocking curves, with some advantages and disadvantages compared with the former method. The new method is especially designed for single-crystal stress measurement. Its usefulness is demonstrated in two examples of lattice-constant and stress measurement.

scholarly journals Влияние толщины пленки Pt на изменение текстуры и доли кристаллической фазы при ее отжиге

2020 ◽  
Vol 90 (5) ◽  
pp. 795
Author(s):  
Р.В. Селюков ◽  
В.В. Наумов
Keyword(s):  
Volume Fraction ◽  
Curve Analysis ◽  
X Ray Diffraction ◽  
Rocking Curve ◽  
X Ray ◽  
Texture Parameters ◽  
Sputter Deposited ◽  
Pt Films ◽  
H 20

Textured Pt films with thickness h=20-80 nm were sputter deposited on oxidized c-Si (100) wafers and annealed in vacuum at 500°C/60 min. The thickness dependencies of the crystalline texture parameters and of the fraction of crystalline phase δ are obtained for as-deposited and annealed films using X-ray diffraction. The determination of δ in textured films is carried out by the new method based on rocking curve analysis. It is found that annealing leads to the texture improvement and to the increasing of δ for all h. The less h, the stronger effects of texture improvement and of δ increasing. These results are explained by the annealing-induced formation of large secondary grains whose volume fraction increases as h decreases. The inhomogeneity of the depth distributions of texture parameters and of δ are investigated for the as-deposited Pt films.

scholarly journals Analysis of oscillatory rocking curve by dynamical diffraction in protein crystals

2018 ◽  
Vol 115 (14) ◽  
pp. 3634-3639 ◽  
Author(s):  
Ryo Suzuki ◽  
Haruhiko Koizumi ◽  
Keiichi Hirano ◽  
Takashi Kumasaka ◽  
Kenichi Kojima ◽  
...  
Keyword(s):  
Glucose Isomerase ◽  
Dynamical Theory ◽  
Protein Crystals ◽  
X Ray Diffraction ◽  
High Quality ◽  
Rocking Curve ◽  
Dynamical Diffraction ◽  
High Quality Protein ◽  
Good Agreement

High-quality protein crystals meant for structural analysis by X-ray diffraction have been grown by various methods. The observation of dynamical diffraction in protein crystals is an interesting topic because dynamical diffraction generally occurs in perfect crystals such as Si crystals. However, to our knowledge, there is no report yet on protein crystals showing clear dynamical diffraction. We wonder whether the perfection of protein crystals might still be low compared with that of high-quality Si crystals. Here, we present observations of the oscillatory profile of rocking curves for protein crystals such as glucose isomerase crystals. The oscillatory profiles are in good agreement with those predicted by the dynamical theory of diffraction. We demonstrate that dynamical diffraction occurs even in protein crystals. This suggests the possibility of the use of dynamical diffraction for the determination of the structure and charge density of proteins.

The development of a matrix metalloproteinase-1 biosensor based on the surface plasmon resonance imaging technique

2016 ◽  
Vol 8 (34) ◽  
pp. 6428-6435 ◽  
Author(s):  
Anna Tokarzewicz ◽  
Lech Romanowicz ◽  
Iosif Sveklo ◽  
Ewa Gorodkiewicz
Keyword(s):  
Surface Plasmon Resonance ◽  
Matrix Metalloproteinase ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Detection Method ◽  
Imaging Technique ◽  
Surface Plasmon Resonance Imaging ◽  
Matrix Metalloproteinase 1 ◽  
The Matrix

The purpose of this study was to create a new, highly selective biosensor, which uses surface plasmon resonance as a detection method for the quantitative determination of the matrix metalloproteinase-1.

Sign in / Sign up

Export Citation Format

Share Document