A cycle of works on manufacturing and studying laser and magnetooptical ceramics with a focus on their thermo-optical characteristics performed by the research team is analyzed. Original results that ...have not been published before such as measurements of the Verdet constant in the Zr:TAG, Re:MgAl2O4, and ZnAl2O4 ceramics are also presented.
Consideration is given to the modernization of a pulse method of nondestructive control of the diffusion coefficient with the aim of improving the accuracy of its use to investigate massive products ...from porous materials. The method makes it unnecessary to precalibrate the used diffusant-concentration meter and ensures a rise in the accuracy of determining the sought diffusion coefficient due to the possibility to select measured parameters involved in a calculation expression on portions of the static characteristic of the sensor with high sensitivity and antijamming capability. Technical implementation of the method with a data-measuring system is considered.
For studies of heat and mass transfer in porous media, operational pulse methods are becoming increasingly common. Unlike most known methods, they eliminate the need for destruction of controlled ...products for preparing special samples of a given configuration. The metrological analysis of the methods providing the possibility of measuring the diffusion coefficient of polar solvents in block products made of porous materials without their destruction is performed. The areas of their preferred use are justified in the context of ensuring acceptable accuracy, in the presence of pronounced anisotropy of properties including.
In the current paper the classical and new relief at the interface: solid substrate-liquid crystal mesophase is presented in order to orient the liquid crystal molecules with good advantage. Rubbing ...technique, some geometric construction at the interface, UV and VIS treatment of the polymers, and laser oriented method are shown. The last one is connected with the materials surface relief modification using the laser-matter interaction process by the application of the IR CO2-laser at the wavelength of 10.6 micrometers. As the efficient nano-objects applied for the relief improvement the carbon nanotubes with the small refractive index close to 1.1 and the large Young's modulus are used. As an additional, the varied electric field of 100-600 V/cm is applied in order to deposit the carbon nanotubes at the materials surfaces in the vertical position and to form the covalent bonding between the carbon atoms and the model matrix materials surface atoms. The novel results are shown in comparison with that obtained before for the classical orienting liquid crystal molecules methods. It extends dramatically the area of the liquid crystal cells use.
Von Willebrand Factor (vWf) is a giant multimeric extracellular blood plasma involved in hemostasis. In this work we present multi-scale simulations of its three-domains fragment A1A2A3. These three ...domains are essential for the functional regulation of vWf. Namely the A2 domain hosts the site where the protease ADAMTS13 cleavages the multimeric vWf allowing for its length control that prevents thrombotic conditions. The exposure of the cleavage site follows the elongation/unfolding of the domain that is caused by an increased shear stress in blood. By deploying Lattice Boltzmann molecular dynamics simulations based on the OPEP coarse-grained model for proteins, we investigated at molecular level the unfolding of the A2 domain under the action of a perturbing shear flow. We described the structural steps of this unfolding that mainly concerns the β-strand structures of the domain, and we compared the process occurring under shear with that produced by the action of a directional pulling force, a typical condition of single molecule experiments. We observe, that under the action of shear flow, the competition among the elongational and rotational components of the fluid field leads to a complex behaviour of the domain, where elongated structures can be followed by partially collapsed melted globule structures with a very different degree of exposure of the cleavage site. Our simulations pose the base for the development of a multi-scale in-silico description of vWf dynamics and functionality in physiological conditions, including high resolution details for molecular relevant events, e.g., the binding to platelets and collagen during coagulation or thrombosis.
We study the system of colloid active nematic liquid crystals evolving with transformation of the structure of surface linear topological defects. We estimate numerically the SO(2) Hamiltonian of the ...BKT model for disclinations on the surfaces connected with flows, which can participate in the defect ordering transitions.
A simple way of deducing the two-body potential from a given two- or three-body wave function is suggested. This method makes it possible to numerically obtain an unknown potential acting between the ...particles
A
and
B
when we know the potentials of their interaction with a third particle
C
and know the characteristics of the three-body bound state (
ABC
). Using the examples of the systems (
nnp
) and
(
Λ
Λ
α
)
, we show that even very simple three-body wave functions constructed on the basis of the general reasoning and the knowledge of the binding energies and sizes of these systems, allow us to deduce reasonable and realistic
nn
and
Λ
Λ
potentials. Within this approach, any artificially constructed wave function automatically becomes an exact solution of the corresponding Schrödinger equation with the
AB
-potential that the method produces. This fact suggests yet another possible application of this method when the
AB
-potential is known. In such a case we can find a bound state solution of the Schrödinger equation by looking for such values of the free parameters in an artificially constructed wave function that minimize the difference between the deduced and the exact
AB
-potentials.
This part of the review describes structures and media, such as lyotropic and thermotropic liquid crystals, photoanisotropic materials, materials polarization-anisotropic light scattering or ...anisotropic fluorescence, and other media. Polarizers based on lyotropic liquid crystals, media with polarization-anisotropic optical properties, metallic grid structures, and media based on anisotropic luminescence are of greatest practical interest.
Abstract
A brief description of scientific program and papers of International Conference “Advanced Element Base of Micro- and Nano-Electronics with Using of To-Date Achievements of Theoretical ...Physics” is presented. It is an annual conference of Moscow Region State University (MRSU).
List of Organizing Committee, Program Committee are available in this pdf.
PDF
