Advertisement

Topics

Interstitial clustering in metallic systems as a source for the formation of the icosahedral matrix and defects in the glassy state.

08:00 EDT 13th June 2019 | BioPortfolio

Summary of "Interstitial clustering in metallic systems as a source for the formation of the icosahedral matrix and defects in the glassy state."

The paper presents molecular dynamics and -statics simulations of a prototypical mono-atomic metallic system (aluminum) and its defects in the crystalline and glassy states. It is shown that there is a thermodynamic driving force for the association of dumbbell interstitials in the crystalline lattice into clusters consisting of different amounts of defects. Clusters containing seven interstitials constitute perfect icosahedra. Within the general framework of the Interstitialcy theory, melting of simple metallic crystals is intrinsically related to a rapid increase of the concentration of dumbbell interstitials, which remain identifiable structural units in the liquid state. Then, the glass produced by rapid melt quenching contains interstitial-type defects. The idea of the present work is to argue that the major structural feature of many metallic glasses -- icosahedral ordering -- originates from the clustering of interstitial-type defects frozen-in upon melt quenching. Separate defects and their small clusters represent the defect part of the glassy structure.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of physics. Condensed matter : an Institute of Physics journal
ISSN: 1361-648X
Pages:

Links

DeepDyve research library

PubMed Articles [18338 Associated PubMed Articles listed on BioPortfolio]

A time and memory efficient recipe for fast normal mode computations of complexes with icosahedral symmetry.

With the recent breakthroughs in experimental technologies, structure determination of extremely large assemblies, many with icosahedral symmetry, has been rapidly accelerating. Computational studies ...

A high-throughput analytical tool for quantification of 15 metallic nanoparticles supported on carbon black.

Metallic nanoparticles (NPs) have been widely used in different areas of science. Usually, they are immobilized on a low-cost support for catalysis purposes. However, there is a lack of studies for sp...

BM (M = Rh, Ir): finally a stable boron-based icosahedral cluster.

The putative global minimum of clusters with formula B10M2 (M = Rh, Ir) corresponds to icosahedral structures formed by two alternately stacked B5 rings with the metals located at the top and bottom v...

Robust Subspace Clustering by Cauchy Loss Function.

Subspace clustering is a problem of exploring the low-dimensional subspaces of high-dimensional data. State-of-the-art approaches are designed by following the model of spectral clustering-based metho...

Late Fusion Incomplete Multi-view Clustering.

Incomplete multi-view clustering optimally integrates a group of pre-specified incomplete views to improve clustering performance. Among various excellent solutions, multiple kernel -means with incomp...

Clinical Trials [3810 Associated Clinical Trials listed on BioPortfolio]

Pilot Study to Validate Metallic Markers for Image Guided Radiation Therapy for Breast Cancer Tx

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...

Metallic Taste Before, During and After Treatment of Head and Neck Cancer

Metallic taste in head and neck cancer is widely under-estimated in the literature. Its causes are multiple and poorly defined. Though it has a strong impact on the nutritional status. ...

Clustering Among the Clinical Profiles of Patients With Pectus Excavatum

The primary objective of this study is to describe the relative distances between patient clinical profiles (i.e. patient clustering) in multivariate space.

Comparison of Three Laryngoscope Blades for Orotracheal Intubation in the Operating Room

The purpose of this study is to determinate if there is a difference in performance provided by three laryngoscope blades: plastic single use, metallic single use and metallic reusable bla...

Biliary Drainage Preceding Possible Pancreaticoduodenectomy. Are Self-expandable Metallic Stents (SEMS) Superior to Plastic Stents?

This study looks in to the rate of biliary stent dysfunction for plastic and metallic stents in patients who need biliary drainage due to a tumor in pancreas before possible pancreaticoduo...

Medical and Biotech [MESH] Definitions

A secreted endopeptidase homologous with INTERSTITIAL COLLAGENASE, but which possesses an additional fibronectin-like domain.

PROTEOGLYCANS-associated proteins that are major components of EXTRACELLULAR MATRIX of various tissues including CARTILAGE; and INTERVERTEBRAL DISC structures. They bind COLLAGEN fibers and contain protein domains that enable oligomer formation and interaction with other extracellular matrix proteins such as CARTILAGE OLIGOMERIC MATRIX PROTEIN.

Hexameric extracellular matrix glycoprotein transiently expressed in many developing organs and often re-expressed in tumors. It is present in the central and peripheral nervous systems as well as in smooth muscle and tendons. (From Kreis & Vale, Guidebook to the Extracellular Matrix and Adhesion Proteins, 1993, p93)

A member of the metalloproteinase family of enzymes that is principally responsible for cleaving FIBRILLAR COLLAGEN. It can degrade interstitial collagens, types I, II and III.

A broad category of nuclear proteins that are components of or participate in the formation of the NUCLEAR MATRIX.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article