scholarly journals Electromigration-induced formation of percolating adsorbate islands during condensation from the gaseous phase: a computational study

2021 ◽  
Vol 12 ◽  
pp. 694-703
Author(s):  
Alina V Dvornichenko ◽  
Vasyl O Kharchenko ◽  
Dmitrii O Kharchenko
Keyword(s):  
Thin Film ◽  
Gaseous Phase ◽  
Computational Study ◽  
Critical Value ◽  
The Self ◽  
Self Organization ◽  
Control Parameters ◽  
Electrical Field ◽  
Applied Electrical Field ◽  
Insight Into

We provide a computational study of a change in the morphology of a growing thin film during condensation caused by electromigration effects. It will be shown, that separated circular adsorbate islands, realized in an isotropic system, become elongated in the direction of the applied electrical field. We discuss the dependence of the critical value of the strength of the applied electrical field, responsible for the formation of percolating adsorbate islands, on main control parameters. This study provides insight into details of electromigration effects during the self-organization of adatoms into percolating adsorbate islands during condensation from the gaseous phase. We will show that the elongated morphology of adsorbate islands remains stable if the electric field is turned off.

The Self-Organisation of Tetrahedrally Close-Packed Structures in Magnetic Nanocrystalline Tb-Fe and Co-Pd Films

2006 ◽  
Vol 115 ◽  
pp. 267-274
Author(s):  
L.I. Kveglis ◽  
A.V. Kuzovnikov ◽  
I.V. Timofeev
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Structural Model ◽  
Perpendicular Magnetic Anisotropy ◽  
Dissipative Structures ◽  
The Self ◽  
Self Organization ◽  
Nanocrystalline State ◽  
Transmission Electron

The self-organization of an atomic structure in Tb30Fe70 and Co50Pd50 films possessing of high values of the perpendicular magnetic anisotropy (PMA) constant (K⊥ ~ 106 erg/cm3) is investigated by transmission electron microscopy. The crystallization of the films is realized in an explosive way with formation of different dissipative structures from the initial nanocrystalline state. In present work the structural model of a thin film in mezzo-scale and the correlation of a structure with magnetic properties are discussed.

Research on Amorphous Silicon Thin-Film Structure and Growth Processes Using Nonlinear Dynamics Methods

2006 ◽  
Vol 910 ◽  
Author(s):  
Nikolay Viktorovich Bodyagin ◽  
Sergey Pavlovich Vikhrov ◽  
Tatiana Gennadievna Larina ◽  
Stanislav Mursalovich Mursalov
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Control Systems ◽  
Organization Theory ◽  
Growth Control ◽  
Film Structure ◽  
The Self ◽  
Self Organization ◽  
Silicon Thin Film ◽  
Material Growth

AbstractThere proved a possibility of applying the self-organization theory to the growth of noncrystalline thin-films and to the detection of ordering in their structure. Methods of analyzing the dynamics of complex systems are modified so as to investigate the structure of noncrystalline thin films. There offered new principles of the construction of material growth control systems.

Computational Study of the Self-Organization of Bidisperse Nanoparticles

Langmuir ◽  
2004 ◽  
Vol 20 (21) ◽  
pp. 9408-9414 ◽  
Author(s):  
Brooks D. Rabideau ◽  
Roger T. Bonnecaze
Keyword(s):  
Computational Study ◽  
The Self ◽  
Self Organization

Patterns Formation in a Primitive Life Form Model

1998 ◽  
Vol 12 (27n28) ◽  
pp. 2881-2888
Author(s):  
Mircea Andrecut
Keyword(s):  
Population Dynamics ◽  
Life Form ◽  
Computational Study ◽  
Self Organization ◽  
Control Parameters ◽  
Death Rates ◽  
Form Model ◽  
Spatio Temporal ◽  
Temporal Dependencies

A computational study of population dynamics in a primitive life form model is presented. The spatio-temporal dependencies of density were calculated for different values of the control parameters (birth and death rates). The calculations have shown that the dynamics of the investigated system lead to the formation of patterns and self-organization only for a certain dependence between the control parameters.

scholarly journals Filament Rigidity and Connectivity Tune the Deformation Modes of Active Biopolymer Networks

2017 ◽  
Author(s):  
Samantha Stam ◽  
Simon L. Freedman ◽  
Shiladitya Banerjee ◽  
Kimberly L. Weirich ◽  
Aaron R. Dinner ◽  
...  
Keyword(s):  
Molecular Motors ◽  
The Self ◽  
Self Organization ◽  
Cross Linking ◽  
Physical Parameters ◽  
Active Materials ◽  
Wide Range ◽  
Filament Bundles ◽  
Deformation Modes ◽  
Insight Into

ABSTRACTMolecular motors embedded within collections of actin and microtubule filaments underlie the dynamic behaviors of cytoskeletal assemblies. Understanding the physics of such motor-filament materials is critical to developing a physical model of the cytoskeleton and the design of biomimetic active materials. Here, we demonstrate through experiments and simulations that the rigidity and connectivity of filaments in active biopolymer networks regulates the anisotropy and the length scale of the underlying deformations, yielding materials with varying contractility. Semi-flexible filaments that can be compressed and bent by motor stresses undergo deformations that are predominantly biaxial. By contrast, rigid filament bundles contract via actomyosin sliding deformations that are predominantly uniaxial. Networks dominated by filament buckling are robustly contractile under a wide range of connectivities, while networks dominated by actomyosin sliding can be tuned from contractile to extensile through reduced connectivity via cross-linking. These results identify physical parameters that control the forces generated within motor-filament arrays, and provide insight into the self-organization and mechanics of cytoskeletal assemblies.

scholarly journals Filament rigidity and connectivity tune the deformation modes of active biopolymer networks

2017 ◽  
Vol 114 (47) ◽  
pp. E10037-E10045 ◽  
Author(s):  
Samantha Stam ◽  
Simon L. Freedman ◽  
Shiladitya Banerjee ◽  
Kimberly L. Weirich ◽  
Aaron R. Dinner ◽  
...  
Keyword(s):  
Molecular Motors ◽  
The Self ◽  
Self Organization ◽  
Cross Linking ◽  
Physical Parameters ◽  
Active Materials ◽  
Wide Range ◽  
Filament Bundles ◽  
Deformation Modes ◽  
Insight Into

Molecular motors embedded within collections of actin and microtubule filaments underlie the dynamics of cytoskeletal assemblies. Understanding the physics of such motor-filament materials is critical to developing a physical model of the cytoskeleton and designing biomimetic active materials. Here, we demonstrate through experiments and simulations that the rigidity and connectivity of filaments in active biopolymer networks regulates the anisotropy and the length scale of the underlying deformations, yielding materials with variable contractility. We find that semiflexible filaments can be compressed and bent by motor stresses, yielding materials that undergo predominantly biaxial deformations. By contrast, rigid filament bundles slide without bending under motor stress, yielding materials that undergo predominantly uniaxial deformations. Networks dominated by biaxial deformations are robustly contractile over a wide range of connectivities, while networks dominated by uniaxial deformations can be tuned from extensile to contractile through cross-linking. These results identify physical parameters that control the forces generated within motor-filament arrays and provide insight into the self-organization and mechanics of cytoskeletal assemblies.

The Relationship between Seeker and Spiritual Guide as portrayed in contemporary Western Sufi Autobiographies

2011 ◽  
Vol 5 (2) ◽  
pp. 297-332
Author(s):  
Kate Zebiri
Keyword(s):  
Life Writing ◽  
New Age ◽  
The Self ◽  
Individual Autonomy ◽  
Religious Authority ◽  
The Face ◽  
The Relationship ◽  
Insight Into ◽  
Continuity And Discontinuity

This article aims to explore the Shaykh-mur?d (disciple) or teacher-pupil relationship as portrayed in Western Sufi life writing in recent decades, observing elements of continuity and discontinuity with classical Sufism. Additionally, it traces the influence on the texts of certain developments in religiosity in contemporary Western societies, especially New Age understandings of religious authority. Studying these works will provide an insight into the diversity of expressions of contemporary Sufism, while shedding light on a phenomenon which seems to fly in the face of contemporary social and religious trends which deemphasize external authority and promote the authority of the self or individual autonomy.

Die Eigen-Werte der Literatur

2009 ◽  
Vol 54 (1) ◽  
pp. 103-119
Author(s):  
Matthias Bickenbach
Keyword(s):  
The Self ◽  
Literary Writing ◽  
Self Organisation ◽  
Insight Into

Eine der zentralen Fragen moderner Poetik ist, wie der Werkentstehungsprozeß von kreativer Materialfülle zur ästhetischen Bestimmtheit des Erzählten als autonomem Kunstwerk übergeht. Sten Nadolnys Poetikvorlesung gibt überraschende Einsichten in die Selbstorganisation von Steuerungsbewegungen, die noch unterhalb der Ebene des Schreibens liegen und die als Theorie der Eigenwerte in der Literatur herauszustellen ist. One of the central questions in modern poetics is, how literary writing proceeds from the creative richness of its material to an aesthetic determination as autonomous art. Sten Nadolnys lectures on his poetics enable an astonishing insight into the self-organisation of operations beyond writing, which can be considered as a theory of self-values in literature.

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