Materials Literature
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The chemical preparation, crystal structure and spectroscopic characterization of [C9H28N4][Bi2Cl10].H2O have been reported. This compound crystallizes in the monoclinic system in space group P21/c and cell parameters a = 12.2385 (6), b = 17.3062 (7), c = 13.0772 (6) Å, β = 104.475 (5)°, Z = 4 and V = 2681.9 (2) Å3. I…
Microstructure of the double‐layered ceramic thermal barrier coatings of lanthanum zirconate (LZ) and yttria‐stabilized zirconia (YSZ) with bond coat on Ni‐based superalloy deposited by electron beam evaporation process has been studied. Two sets of combination of LZ and YSZ were deposited: one LZ over YSZ and the oth…
Microlens Arrays in silicon are suitable for an important wavelength range within the IR spectrum, since silicon features relatively high refractive index and is transparent at the aimed wavelengths, leading to microlenses with a focal length short enough to allow compact systems, offering an alternative for applicati…
In this paper we probe the surface enhanced fluorescence (SEF) and Raman scattering (SERS) from arrays of selfstanding Au nanorod arrays embedded within a porous alumina template (AAO). By controlling the thickness of the AAO matrix both SEF and SERS are observed exhibiting an inverse relationship. SERS and SEF show a…
Two new C21 steroidal glycosides were isolated from Cynanchum wallichii Wight. Their structures were elucidated as caudatin-3-O-β-d-glucopyranosyl-(1 → 4)-β-d-oleandropyranosyl-(1 → 4)-β-d-cymaropyranosyl-(1 → 4)-β-d-digitoxopyranoside (1) and caudatin-3-O-β-d-glucopyranosyl-(1 → 4)-β-d-cymaropyranosyl-(1 → 4)-β-d-ole…
This paper presents the footage from a hi-speed camera used in the experiment on both cases of a non-filled and water-filled aluminium tank. The objective was to determine the failure stages that will be used as a reference in the simulation works later on. The tank was impacted by fragment simulating projectiles (FSP…
An efficient methodology for the modification of electrical resonators in order to be readily applicable at the terahertz regime is developed in this paper. To this aim, the proposed miniaturization technique starts from the conventional resonator which, without any change, exhibits the lowest possible electrical reso…
Functional demonstration of a wide band, wide angular width “wire-grid polarizer” has been made in the framework of a User Project of the European project ACTMOST (Access To Micro-Optics Expertise, Services and Technologies). The polarization function relies upon linear polarizers using the “wire-grid” polarizer princ…
The goal of our paper was to investigate the impact of the necking phenomenon on the optical properties of two gold nanoparticles characterized by a large value of the imaginary part of the refractive index m. Our results show that the difference between various neck types is small, therefore, for the modeling process…
Strict process control, combined with proprietary process enhancements have enabled the production of large-scale single-crystal sapphire that demonstrates crystalline quality in excess of what has previously been possible. Extremely low defect densities, narrow rocking-curves, and very low stress gradients in the mat…
Friction and wear of 10 types Ni chemical coatings, with and without heat treatment, containing nano-diamond particles of various size – 0;5 nm; 100 nm; 200 nm and 250 nm, are studied in the paper. Procedure and laboratory device for friction investigation in starting regime were developed. Experimental results for th…
We present designs for sharp bends in polymer waveguides using colloidal photonic crystal (PhC) structures. Both silica (SiO2) sphere based colloidal PhC and core-shell colloidal PhC structures having a titania (TiO2) core inside silica (SiO2) shells are simulated. The simulation results show that core-shell Face Cent…
In optical metamaterials, the scatterers are usually aligned symmetrically with respect to the unit cells of the material. In this work, we consider metamaterials in which the "metamolecules" can be non-centrosymmetric and have an arbitrary, but common, orientation in the unit cells. Such internally twisted crystallin…
The detection and identification of nanoparticles has caught the attention in the last decade due to its potential application on small bio-particles. Raman spectroscopy stands out as a label-free technique for the detection of such particles. However, it may require a high concentration of particles. In a solution wi…
Chromatic aberration is a major issue for imaging mainly with large acceptance angle electrostatic lenses. Its correction is necessary to take advantage of the outstanding spatial and angular resolution that these lenses provide. We propose a method to eliminate the effect of chromatic aberration on the measured image…
INTRODUCTION: A major obstacle in tissue engineering is to create a surgically implantable tissue with long-term viability. Several promising techniques have focused on biological vascularized matrices (BioVaM) with preserved vascular pedicles in the porcine model. However, the handling of this model is time-consuming…
We demonstrate that what is called a total photoionization cross section in the work by T. W. Gorczyca, M. F. Hasoglu, and S. T. Manson [Phys. Rev. A 86, 033204 (2012)] is in fact a partial photoionization cross section. These quantities differ impressively even in isolated atoms. This demonstrates the prominent role…
Abstract This paper reports the results of studies of ZnS/Ge/ZnS nanostructures, obtained by high vacuum thermal deposition of ZnS and Ge powders into porous anodic aluminium oxide (AAO) with different diameters of pores. Scanning electron microscopy (SEM) investigations reveal two types of nanostructures having the f…
The present work investigates the propagation properties of the surface plasmon polariton wave supported on graphene surface over an anisotropic substrate at far-infrared frequencies. Initially, the surface wave’s propagation on isotropic media substrate is studied and verified with the theoretical estimation, includi…
Although discovered 40 years ago, the interest in surface enhanced Raman spectroscopy (SERS) for a variety of applications in the fields of material and biomaterial has been revived over the past decade mostly due to a better control over the fabrication methods of nanoscale metallic structures. Metallic structures pr…