scholarly journals Self‐organized van der Waals epitaxy of layered chalcogenide structures

2015 ◽  
Vol 252 (10) ◽  
pp. 2151-2158 ◽  
Author(s):  
Yuta Saito ◽  
Paul Fons ◽  
Alexander V. Kolobov ◽  
Junji Tominaga
Keyword(s):  
Van Der Waals ◽  
Self Organized ◽  
Layered Chalcogenide

Atomic-scale observation of defects motion in van der Waals layered chalcogenide based materials

2019 ◽  
Vol 166 ◽  
pp. 154-158 ◽  
Author(s):  
Andriy Lotnyk ◽  
Torben Dankwort ◽  
Isom Hilmi ◽  
Lorenz Kienle ◽  
Bernd Rauschenbach
Keyword(s):  
Van Der Waals ◽  
Atomic Scale ◽  
Layered Chalcogenide

scholarly journals Self-organized twist-heterostructures via aligned van der Waals epitaxy and solid-state transformations

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Peter Sutter ◽  
Rina Ibragimova ◽  
Hannu-Pekka Komsa ◽  
Bruce A. Parkinson ◽  
Eli Sutter
Keyword(s):  
Solid State ◽  
Direct Synthesis ◽  
Van Der Waals ◽  
Spontaneous Transformation ◽  
Self Organized ◽  
Preferential Nucleation ◽  
Scalable Synthesis ◽  
Excess Sulfur ◽  
Structure Engineering ◽  
2D Crystals

AbstractVertical van der Waals (vdW) heterostructures of 2D crystals with defined interlayer twist are of interest for band-structure engineering via twist moiré superlattice potentials. To date, twist-heterostructures have been realized by micromechanical stacking. Direct synthesis is hindered by the tendency toward equilibrium stacking without interlayer twist. Here, we demonstrate that growing a 2D crystal with fixed azimuthal alignment to the substrate followed by transformation of this intermediate enables a potentially scalable synthesis of twisted heterostructures. Microscopy during growth of ultrathin orthorhombic SnS on trigonal SnS2 shows that vdW epitaxy yields azimuthal order even for non-isotypic 2D crystals. Excess sulfur drives a spontaneous transformation of the few-layer SnS to SnS2, whose orientation – rotated 30° against the underlying SnS2 crystal – is defined by the SnS intermediate rather than the substrate. Preferential nucleation of additional SnS on such twisted domains repeats the process, promising the realization of complex twisted stacks by bottom-up synthesis.

1-[5-(4,5-Dimethyl-1,3,2-dioxaborolan-2-yl)thiophen-2-yl]ethanone and 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde

2012 ◽  
Vol 68 (6) ◽  
pp. o213-o215
Author(s):  
Neudo Urdaneta ◽  
Jesús Nuñez ◽  
Teresa González ◽  
Alexander Briceño
Keyword(s):  
Crystal Structure ◽  
Self Assembly ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Π Interactions ◽  
Methyl Methyl ◽  
Self Organized ◽  
Dipole Interactions ◽  
Dimensional Network

In both title compounds, C10H13BO3S, (I), and C13H17BO3, (II), the molecules adopt nearly planar conformations. The crystal packing of (I) consists of a supramolecular two-dimensional network with a herringbone-like topology formed by self assembly of centrosymmetric pairs of molecules linkedviadipole–dipole interactions. The crystal structure of (II) consists of a supramolecular two-dimensional network built up from centrosymmetric pairs of moleculesviaπ–π interactions. These pairs of molecules are self-organized in an offset fashion related by a symmetry centre, generating supramolecular ribbons running along the [101] direction. Neighbouring ribbons are stackedviacomplementary van der Waals and hydrophobic methyl–methyl interactions.

scholarly journals Research Update: Van-der-Waals epitaxy of layered chalcogenide Sb2Te3 thin films grown by pulsed laser deposition

APL Materials ◽  
2017 ◽  
Vol 5 (5) ◽  
pp. 050701 ◽  
Author(s):  
Isom Hilmi ◽  
Andriy Lotnyk ◽  
Jürgen W. Gerlach ◽  
Philipp Schumacher ◽  
Bernd Rauschenbach
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Van Der Waals ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Layered Chalcogenide

Crystallographic features related to a van der Waals coupling in the layered chalcogenide FePS3

2016 ◽  
Vol 120 (14) ◽  
pp. 142114 ◽  
Author(s):  
Chisato Murayama ◽  
Momoko Okabe ◽  
Daisuke Urushihara ◽  
Toru Asaka ◽  
Koichiro Fukuda ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Layered Chalcogenide

Problem behavior in autism spectrum disorders: A paradigmatic self-organized perspective of network structures

2019 ◽  
Vol 42 ◽  
Author(s):  
Lucio Tonello ◽  
Luca Giacobbi ◽  
Alberto Pettenon ◽  
Alessandro Scuotto ◽  
Massimo Cocchi ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Problem Behaviors ◽  
Autism Spectrum ◽  
The Self ◽  
Network Structures ◽  
Self Organized ◽  
Critical Equilibrium ◽  
Self Organized Criticality ◽  
Acute Agitation ◽  
Spectrum Disorders

AbstractAutism spectrum disorder (ASD) subjects can present temporary behaviors of acute agitation and aggressiveness, named problem behaviors. They have been shown to be consistent with the self-organized criticality (SOC), a model wherein occasionally occurring “catastrophic events” are necessary in order to maintain a self-organized “critical equilibrium.” The SOC can represent the psychopathology network structures and additionally suggests that they can be considered as self-organized systems.

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