関連する実験動画

Updated: Feb 8, 2026

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

二次元異方性ReS₂/MoS₂垂直ヘテロ構造におけるメソスケールエピタキシー

Saiphaneendra Bachu¹, Youjian Tang², Lauren Stanton¹

¹Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.

|February 6, 2026

Abstract:

Effects of lattice mismatch and twist on epitaxy in two-dimensional (2D) vertical heterostructures are well-explored, whereas the effects of in-plane anisotropy are largely unknown. Here, we report the synthesis of ReS₂/MoS₂ vertical heterostructures using chemical vapor deposition, combining anisotropic (triclinic) ReS₂ and isotropic (hexagonal) MoS₂. A combination of scanning/transmission electron microscopy (S/TEM) and density functional theory calculations are used to elucidate the microstructure of ReS₂/MoS₂ heterostructures and reveal a complex interplay of interfacial epitaxy, lattice mismatch strain, and anisotropy. We observe that the heterostructure system's ability to relax interlayer registry differs in the crystallographic directions of larger and smaller lattice mismatch. It nevertheless obtains an overall effective lattice registry on the longest length scales by means of variations in the Re chain direction that create a quilt-like pattern of stripe domains, a phenomenon we describe as mesoscale epitaxy.

キーワード:

化学気相成長面内異方性メソスケールエピタキシー二硫化モリブデン二硫化レニウム透過型電子顕微鏡垂直ヘテロ構造

さらに関連する動画

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy

Published on: October 23, 2018

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal

Published on: January 15, 2016

関連する概念動画

Vertical Curve: Problem Solving

Vertical Curve: Problem Solving

Vertical curves provide the transition between two roadway grades, ensuring safety, comfort, and functionality. Calculating elevations at specific stations along the curve involves several systematic steps based on the curve's geometry and provided design parameters.The vertical curve is defined by its length, grades, Point of Vertical Intersection (P.V.I.) location, and P.V.I. elevation. The stations of the Point of Vertical Curvature (P.V.C.), where the curve begins, and the Point of Vertical...

Introduction to Vertical Curves

Introduction to Vertical Curves

Vertical curves are parabolic transitions that connect different grades on highways and railroads, ensuring a smooth alignment between back and forward tangents. The back tangent represents the initial grade, while the forward tangent defines the subsequent grade. These curves can be symmetrical, with equal tangent lengths, or nonsymmetrical, with varying lengths. The key points defining a vertical curve include the Point of Vertical Intersection (P.V.I.), where the tangents meet; the Point of...

Elevation of Intermediate Points on Vertical Curves

Elevation of Intermediate Points on Vertical Curves

Vertical curves are essential in roadway design because they provide smooth transitions between varying roadway grades. Designing vertical curves involves calculating intermediate elevations and identifying the curve's highest or lowest point, which is essential for optimal roadway performance.Intermediate elevations on a vertical curve are determined using the tangent offset method. This method considers the initial elevation at the start of the curve, the grades, and the curve's geometry. The...

Sight Distance in a Vertical Curve

Sight Distance in a Vertical Curve

Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...

Dimensional Analysis

Dimensional Analysis

Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...

Dimensional Analysis

Dimensional Analysis

Dimensional analysis is a valuable technique in fluid mechanics for simplifying complex problems by reducing them into dimensionless groups. These groups capture the essential relationships between the variables involved, allowing researchers and engineers to analyze fluid flow without dealing with each variable individually. This approach reduces the number of independent variables, allowing for easier analysis and better understanding of physical phenomena.
In fluid mechanics, dimensional...