Two-dimensional atomic crystals.

Design and Analysis of a Novel Hexagonal Shaped Channel Drop Filter Based on Two-Dimensional Photonic Crystals

In this paper a new optical channel drop filter (CDF) based on two dimensional (2-D) photonic crystals (PhC) with hexagonal shaped structure is proposed and numerically demonstrated by using the finite-difference-time-domain (FDTD) and plane-wave-expansion (PWE) techniques. Photonic crystals (PhCs) are artificial dielectric nanostructure materials in which a periodic modulation of the material ...

Nanoelectronic circuits based on two-dimensional atomic layer crystals.

Since the discovery of graphene and related forms of two-dimensional (2D) atomic layer crystals, numerous studies have reported on the fundamental material aspects, such as the synthesis, the physical properties, and the electrical properties on the transistor level. With the advancement in large-area synthesis methods, system level integration to exploit the unique applications of these materi...

Spin memory and spin-lattice relaxation in two-dimensional hexagonal crystals

We propose a theory of spin relaxation of electrons and holes in two-dimensional hexagonal crystals such as atomic layers of transition-metal dichalcogenides (MoS2, WSe2, etc.). We show that, even in intrinsically defect-free crystals, their flexural deformations are able to generate spin relaxation of carriers. Based on symmetry analysis, we formulate a generic model for spin-lattice coupling ...

The integration of high-k dielectric on two-dimensional crystals by atomic layer deposition

Introduction to a general crystallography.

The definition of an extended crystallographic group is given, based on an n-dimensional Euclidean space, carrier of a faithful integral representation of a permutation group of atomic positions. The Euclidean crystallography of normal crystals and the higher-dimensional one applied to incommensurately modulated crystals, intergrowth crystals and quasicrystals are special cases of a general cry...

Atomic Imaging and Spectroscopy of Single Layered Materials with Interrupted Periodicities

The interrupted periodicities (atomic defects or edge structures) are quite important especially in lowdimensional crystals since they strongly affect their physical and/or chemical properties. In bulk crystals electron microscopes have been widely used to examine structural defects such as dislocations and grain boundaries, which are regarded as oneand two-dimensional structural defects, respe...