Proceedings of International Scientific Seminar

Local Cluster Saratov Organized in Framework of the Seventh Framework Programme of Commission of the European Communities «Photonics4Life»

Authors: Bashkatov A. N., Vilensky M. A., Tuchin V. V.

This article is an introduction to the current release, which presents the work of participants in the Workshop of Local Cluster Saratov (LCS) Photonics4Life FP-7 conference held at Saratov State University on March 11, 2011.

Different Types of Surface Enhancement Raman Scattering Platforms and their Applications

Authors: Stetsyura S. V., Gorin D. A.

In this work high sensitive analytical technique surface enhancement Raman scattering (SERS) is considered. The detection of one molecule of substance in solution is possible by this technique. And SERS is noninvasive analytical equipment and for research of bioobjects can be combined with other techniques such as microfluidics or laser tweezers.

Langmuir Monolayers in the Electric Field

Authors: Chumakov A. S., Gorbachev I. A., Ermakov A. V., Kim V. P., Glukhovsky E. G.

An influence of the electric field oriented vertically on the formation process of monolayers. Water and water solutions of inorganic salts are used as a subphase. It’s experimentally shown that the electric field may affect significantly on the monolayers formation of fatty acids: manolayr’s loosening occurs when a deionized water is used as a subphase; manolayr’s consolidation is observed when water solutions of inorganic salts are used as a subphase. An electric field can be significant technology factor of the Langmuir monolayer’s formation process.

Influence of Environment and Temperature on the Luminescent Properties of ZnCdS Nanoparticles

Authors: Skaptsov A. A., Volkova N. V., Galushka V. V., Vidalia I. V., Zakharevich A. M., Konyukhov A. I., Kochubey V. I.

Dependence of the luminescence spectra of the non-stabilized ZnCdS nanoparticles placed in a biological environment on their temperature is investigated. It is shown that the intensity and the position of maximum luminescence of surface defects ZnCdS nanoparticles depends on the temperature and the properties of the biological environment until it is denatured.

The Impact of External and Internal Electrostatic Fields on Formation of Polyelectrolyte Molecules Coatings

Authors: Stetsyura S. V., Bulanov M. S., Malyar I. V.

The review of scientific articles devoted to preparation of hybrid structures and widespread methods of impact on structure, composition and organic coating properties was carried out. It was demonstrated that difference between chemical and physical methods to modify and to impact is relative due to similar electrostatic interaction under applied external electric fields as well as between molecules and their fragments, i.e. there are internal electric fields in polyelectrolyte’s solution and at interfaces.

Nanocomposite Langmuir Layers Based on Molecular Brushes

Authors: Klimova S. A., Inozemtseva O. A., German S. V., Skosyreva T. S., Peganov A. D.

The current state of producing of nanostructured composite materials based on polymers like molecular brushes was described. Experimental results established that using hydrophobic nanoparticles allows to effectively integrate the nanoparticles into the brush polymer monolayer with different length of the side chainsIn this case for composite monolayer formation we need to spread an aliquot of the polymer and nanoparticles simultaneously on the surface of the water subphase using Langmuir–Blodgett technique.

Composite Nonwoven Materials with Microparticles for Regenerative Surgery

Authors: Severyukhina A. N., Svenska Y. I., Gorin D. A.

Composite nonwoven materials with different medical supplements are widely used for regenerative surgery. Majority of these medicines are cytotoxic, therefore precise drug delivery is necessary to decrease toxic effects. We propose novel polymer nanofibrous material impregnated by core–shell microstructures that can provide targeted and controllable release of encapsulated drugs. This biodegradable scaffold system was fabricated using mixing of calcium carbonate microparticles with chitosan solutions followed by electrospinning method.

Coatings Formed by Polyionic Assembly and its Electronic Application

Authors: Sergeeva A. S., Gorin D. A.

The work is a review of research in the area of nanostructured thin films formed by Layer-by-Layer self-assembly. This technology allows obtaining the composite coatings and nanomaterials with determined properties. Such structures act as important components of highly integrated devices in various fields of science and technology.

Integrity Management of Nanocomposite Microstructures Based on Lipids, Polymers and Inorganic Nanoparticles Through Electric Field

Authors: Ermakov A. V., Kim V. P., Chumakov A. S., Gorbachev I. A., Gorin D. A., Savonin A. A., Vidalia I. V., Khomutov G. B., Glukhovsky E. G.

New method of remote group control over permeability and integrity of nanocomposite microstructures of different nature is submitted in this letter. Inorganic nanoparticles are used as a sensitizer to an electric field. The destruction possibility of polymeric microcapsules are shown. The destruction possibility of lipids vesicles on the example of the living cells covered with nanoparticles of gold is shown.

Investigation of Multilayers Structures Based on the Langmuir–Blodgett Films of CdSe/ZnS Quantum Dots

Authors: Gorbachev I. A., Chumakov A. S., Ermakov A. V., Kim V. P., Speranskaya E. S., Goryacheva I. Y., Glukhovsky E. G.

This article presents the results of a study QD Langmuir monolayers on the water subphase and LB films transferred onto a solid surface. The monolayers of CdSe/CdS/ZnS QD stabilized by oleic acid without of supplements of amphiphilic matrix, was created. The monolayers was transfered on the solid substrate, what was proved by the AFM and the fluorescence spectroscopy methods. The fluorescence spectra of the LB films with variable numbers of layers was captured.

Pages