Related Experiment Video
Updated: Jan 15, 2026
09:25
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
Published on: July 5, 2019
10.1K
Evolution of two-dimensional van der Waals materials and their applications
Mohd Alam1, Sandip Chatterjee1
1Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
Summary
Recent advancements in 2D van der Waals (vdW) materials offer exceptional properties for electronics and quantum technologies. Research explores their synthesis, applications, and challenges for future innovations.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Quantum Technologies
Background:
- 2D van der Waals (vdW) materials possess unique properties due to their atomic thickness and layered structure.
- These materials exhibit tunable bandgaps, high carrier mobility, and strong light-matter interactions.
- Their quantum confinement effects are crucial for advancing quantum computing.
Purpose of the Study:
- To review recent advancements in 2D van der Waals materials.
- To explore their synthesis, properties, and diverse applications.
- To discuss challenges and future directions in the field.
Main Methods:
- Chemical Vapor Deposition (CVD)
- Metal-Organic CVD (MOCVD)
- Molecular Beam Epitaxy (MBE)
- Exfoliation techniques
Main Results:
- Synthesis methods allow precise control over thickness, composition, and heterostructures.
- Emerging directions include heterostructure design and twisted bilayers.
- These materials are integral to next-generation electronics, optoelectronics, and quantum computing.
Conclusions:
- Despite progress, challenges in large-scale synthesis, material stability, and device integration persist.
- Novel 2D materials and heterostructure engineering offer solutions.
- 2D vdW materials are poised to reshape fundamental science and industrial applications.
Related Concept Videos
01:24Van der Waals Interactions
70.2K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
70.2K
01:10Van der Waals Equation
6.2K
The ideal gas law is an approximation that works well at high temperatures and low pressures. The van der Waals equation of state (named after the Dutch physicist Johannes van der Waals, 1837−1923) improves it by considering two factors.
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
6.2K
04:01Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation
38.8K
Thus far, the ideal gas law, PV = nRT, has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and molecular formula problems to determining the density and molar mass of a gas. However, the behavior of a gas is often non-ideal, meaning that the observed relationships between its pressure, volume, and temperature are not accurately described by the gas laws.
38.8K
02:18Network Covalent Solids
16.0K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.0K
01:12Two-Dimensional (2D) NMR: Overview
1.5K
The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
1.5K
02:52VSEPR Theory and the Basic Shapes
83.3K
Overview of VSEPR Theory
83.3K