Structural Transformation and Luminescence Response of Magic-Size Silver(I) Chalcogenide Clusters via Ligand-Exchange

2021 ◽  
Author(s):  
Wei-Hong Wu ◽  
Hui-Min Zeng ◽  
Ze-Nan Yu ◽  
Chao Wang ◽  
Zhan-Guo Jiang ◽  
...  
Keyword(s):  
Structural Transformation ◽  
Ligand Exchange ◽  
Structural Transformations ◽  
Structure Property ◽  
Chalcogenide Clusters ◽  
Property Correlation ◽  
Fundamental Science

Structural transformations of nanoclusters provide a platform to tune their properties and understand the fundamental science due to their intimate structure–property correlation. Here, we present a ligand-exchange induced growth of...

Structural Transformation of a Germanium Σ=13 (510) [001] Tilt Grain Boundary under the Electron Beam

1990 ◽  
Vol 48 (1) ◽  
pp. 52-53 ◽  
Author(s):  
Jean-Luc Rouvière ◽  
Alain Bourret
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Grain Boundary ◽  
Structural Transformation ◽  
Mirror Symmetry ◽  
High Resolution Electron Microscopy ◽  
Structural Transformations ◽  
Covalent Bonds ◽  
Resolution Electron ◽  
Tilt Grain Boundary

The possible structural transformations during the sample preparations and the sample observations are important issues in electron microscopy. Several publications of High Resolution Electron Microscopy (HREM) have reported that structural transformations and evaporation of the thin parts of a specimen could happen in the microscope. Diffusion and preferential etchings could also occur during the sample preparation.Here we report a structural transformation of a germanium Σ=13 (510) [001] tilt grain boundary that occurred in a medium-voltage electron microscopy (JEOL 400KV).Among the different (001) tilt grain boundaries whose atomic structures were entirely determined by High Resolution Electron Microscopy (Σ = 5(310), Σ = 13 (320), Σ = 13 (510), Σ = 65 (1130), Σ = 25 (710) and Σ = 41 (910), the Σ = 13 (510) interface is the most interesting. It exhibits two kinds of structures. One of them, the M-structure, has tetracoordinated covalent bonds and is periodic (fig. 1). The other, the U-structure, is also tetracoordinated but is not strictly periodic (fig. 2). It is composed of a periodically repeated constant part that separates variable cores where some atoms can have several stable positions. The M-structure has a mirror glide symmetry. At Scherzer defocus, its HREM images have characteristic groups of three big white dots that are distributed on alternatively facing right and left arcs (fig. 1). The (001) projection of the U-structure has an apparent mirror symmetry, the portions of good coincidence zones (“perfect crystal structure”) regularly separate the variable cores regions (fig. 2).

Structure-Property Correlation of Halogen Substituted Benzothiazole Crystals

2021 ◽  
pp. 130765
Author(s):  
Nipun P. Thekkeppat ◽  
Labhini Singla ◽  
Srinu Tothadi ◽  
Priyadip Das ◽  
Angshuman Roy Choudhury ◽  
...  
Keyword(s):  
Structure Property ◽  
Property Correlation

scholarly journals Frontispiece: Terpyridine‐Based 3D Metal–Organic‐Frameworks: A Structure–Property Correlation

2021 ◽  
Vol 27 (19) ◽  
Author(s):  
Syed Meheboob Elahi ◽  
Mukul Raizada ◽  
Pradip Kumar Sahu ◽  
Sanjit Konar
Keyword(s):  
Metal Organic Frameworks ◽  
Structure Property ◽  
Property Correlation ◽  
Metal Organic

Structure-property correlation study through sum-over-state approach

2015 ◽  
Author(s):  
P. K. Nandi ◽  
K. Hatua ◽  
A. K. Bansh ◽  
N. Panja ◽  
T. K. Ghanty
Keyword(s):  
Correlation Study ◽  
Structure Property ◽  
Property Correlation

scholarly journals Numerical simulation of dual-phase steel based on real and virtual three-dimensional microstructures

2021 ◽  
Author(s):  
Frederik Scherff ◽  
Jessica Gola ◽  
Sebastian Scholl ◽  
Kinshuk Srivastava ◽  
Thorsten Staudt ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Simulation Model ◽  
Dual Phase Steel ◽  
Three Dimensional ◽  
Simultaneous Increase ◽  
Dual Phase ◽  
Structure Property ◽  
Heavy Plate ◽  
Property Correlation ◽  
Process Route

AbstractDual-phase steel shows a strong connection between its microstructure and its mechanical properties. This structure–property correlation is caused by the composition of the microstructure of a soft ferritic matrix with embedded hard martensite areas, leading to a simultaneous increase in strength and ductility. As a result, dual-phase steels are widely used especially for strength-relevant and energy-absorbing sheet metal structures. However, their use as heavy plate steel is also desirable. Therefore, a better understanding of the structure–property correlation is of great interest. Microstructure-based simulation is essential for a realistic simulation of the mechanical properties of dual-phase steel. This paper describes the entire process route of such a simulation, from the extraction of the microstructure by 3D tomography and the determination of the properties of the individual phases by nanoindentation, to the implementation of a simulation model and its validation by experiments. In addition to simulations based on real microstructures, simulations based on virtual microstructures are also of great importance. Thus, a model for the generation of virtual microstructures is presented, allowing for the same statistical properties as real microstructures. With the help of these structures and the aforementioned simulation model, it is then possible to predict the mechanical properties of a dual-phase steel, whose three-dimensional (3D) microstructure is not yet known with high accuracy. This will enable future investigations of new dual-phase steel microstructures within a virtual laboratory even before their production.

Studies on structure property correlation of cross-linked glycidyl azide polymer

2009 ◽  
Vol 114 (6) ◽  
pp. 3360-3368 ◽  
Author(s):  
S. K. Manu ◽  
T. L. Varghese ◽  
S. Mathew ◽  
K. N. Ninan
Keyword(s):  
Structure Property ◽  
Glycidyl Azide Polymer ◽  
Property Correlation ◽  
Glycidyl Azide
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