Attenuation characteristics of a planar silicon-clad ion exchange glass waveguide structure are investigated theoretically at the optical wavelength of 0.6328 μm. An oscillatory behaviour of the attenuation curves is noticed in the proposed four layer structure. It is observed that by varying the thickness of silicon cladding layer, the TE or TM propagating modes may be selectively attenuated. ...

We show theoretically that range of reflection bands and defect modes inside the band gap can be tuned by using a one-dimensional tilted photonic crystal (TPC) structure. A TPC structure is similar to the conventional PC structure with the only difference that in this case alternate layers are inclined at certain angle in the direction of periodicity of the structure. In order to obtain the ref...

We propose a new fast numerical renormalization group method, the corner transfer matrix renormalization group (CTMRG) method, which is based on a unified scheme of Baxter's corner transfer matrix method and White's density matrix renormalization group method. The key point is that a product of four corner transfer matrices coincides with the density matrix. We formulate the CTMRG method as a r...

In this paper, we discuss a new model to obtain the answer following question: how can establish different types of mixed integral equations from Fredholm equation? For this, consider three (MIEs), under certain conditions. The existence unique solution such is guaranteed. Using analytic and numerical methods, MIEs formulas yield same equation (FIE) formula second kind. continuous kernel, these...

BACKGROUND Conventional methods for writing case notes detailing the progress of oral lichen planus (OLP), a precancerous condition that requires long-term surveillance, is both time-consuming and tedious for the busy clinician. OBJECTIVES To design and perform a simple surveillance on OLP patients based on colour-coded topography mouth maps (TMM). MATERIALS AND METHODS Three colour-coded T...

Stomata regulate gas exchange through the aerial plant epidermis by controlling the width of a pore bordered by two guard cells. Little is known about the genes that regulate stomatal development. We screened cotyledons from ethyl methanesulfonate-mutagenized seeds of Arabidopsis by light microscopy to identify mutants with altered stomatal morphology. Two mutants, designated too many mouths (t...

This numerical work proposes two novel designs of long-range surface plasmon resonance sensors (LRSPR) using different coupling prisms. The performance analysis the proposed sensor has been investigated parameters like quality factor ( Q ), detection accuracy (DA), sensitivity id="M2"> S and full-width half maxi...

As a promising optical method used in variety of applications surface plasmon resonance (SPR) sensors are employed over wide range boundaries. This research proposes highly sensitive SPR based sensor with novel hybrid structure using transition metal dichalcogenides (e.g. WSe 2 , PtSe ) along bl...

In this paper, the properties of the omnidirectional photonic band gap (OBG) realized by one-dimensional (1D) Fibonacci quasi-periodic structure which is composed of superconductor and isotropic dielectric have been theoretically investigated by the transfer matrix method (TMM). From the numerical results, it has been shown that this OBG is insensitive to the incident angle and the polarization...

The photoelectron spectrum of the trimethylenemethane (TMM) negative ion is described. The electron affinity of TMM is found from the spectrum to be 0.431 6 0.006 eV, and the energy difference between the X̃ A9 2 and b̃ A1 states of TMM is determined to be 16.1 6 0.2 kcal/mol. The energy difference between the lowest energy triplet and singlet states is estimated to be 13–16 kcal/mol. The enthalp...