We analyze point defect bulk and surface diffusion near the crystal–vacuum interface show that is coupled with via atomic processes in intermediate subsurface layer. A set of self-contained differential equations describing interaction self-interstitials vacancies crystal proposed. The results existence fundamental relation between equilibrium concentrations defects at crystal. For case silicon...

In this paper, we describe the effect of local electric field enhancement due to existence photonic edge states in a nanoplasmonic crystal. These can be excited by normal incident wave and are localized along continuous line defect, where translational symmetry is broken. The crystal formed triangular lattice SiO2 cylinders on top Ag thin films. Numerical simulations demonstrated that modes con...

We consider fluctuations of defects density taking into account their interaction. Stochastic field of displacement generation rate gives random defect distribution. We determinate statistical characteristics (mean and dispersion) of random field of point defect distribution as function of defect generation parameters, temperature and properties of irradiated crystal. Keywords—Irradiation, Prim...

Using general properties of the crystal site representation normal mode matrix, we provide some simple bounds on localized modes in crystals with point defects. I. DERIVATION OF THE TRACE CONDITION The substitutional insertion of a point defect impurity into an otherwise perfect crystal will typically (see e.g. [1]) modify the spectrum of the 3N normal modes of the crystal, leading in certain c...

In this paper, we present the simulation results on the absorption modification in a two-dimensional photonic crystal slab (2D PCS) structure, based on three-dimensional finite-difference time-domain technique (3D FDTD). Significantly enhanced absorption at defect level was obtained at surface normal direction in a single defect photonic crystal cavity, for both in-plane and vertical sources. A...

This paper investigates the spectral properties of a one-dimensional photonic crystal (PC) containing an inhomogeneous polymer- dispersed liquid crystal (PDLC) as a defect layer. Experimental results indicate that the voltage-induced reorientation of LC molecules between the light-scattering and transparent states in the PDLC enables the electrical tuning of the transmittance of defect-mode pea...

Photonic band gap (PBG) dielectric fibers with hollow cores are being studied both theoretically and experimentally for use as laser driven accelerator structures. The hollow core functions as both a longitudinal waveguide for the transverse-magnetic (TM) accelerating fields and a channel for the charged particles. The dielectric surrounding the core is permeated by a periodic array of smaller ...

This study proposes a hybrid structure for a one-dimensional (1D) photonic crystal (PC) comprising a tristable cholesteric liquid crystal (CLC) as the defect layer. The CLC exhibits three optically stable states: the Grandjean planar (P), focal conic (FC), and uniform lying helix (ULH) configurations. Specifically, the reflection band of the CLC is set within the photonic bandgap (PBG) of the 1...