-
Article
Remote Controlled Delivery Systems. On a Road to Medical Applications
Today, the world moves towards wireless communication. Broadly, so far it is all about communication between something of the size one can keep in hand like mobile phone. Current trend in miniaturizing the dev...
-
Article
New Approaches to Scaffold Biocompatibility Assessment
At the present day, the biocompatibility assessment of tissue engineering scaffolds and implants is an important issue in regenerative medicine. The present study aims to defining changes of skin microcirculat...
-
Article
Disruption of Polymer and Composite Microcapsule Shells under High-Intensity Focused Ultrasound
A process has been described for obtaining polymer (polyelectrolyte) microcapsules and polyelectrolyte/magnetite composite microcapsules, as well as silica-based hybrid capsules via silane-type precursor hydro...
-
Article
Decapsulation of polyelectrolyte nanocomposite microcapsules by pulsed microwave effect
A technology of remote activation of specially created polyelectrolyte nanocomposite microcapsules (PNMCs) by pulse microwave action is developed. The sensitivity of the synthesized PNMCs to the external micro...
-
Article
Composite magnetic microcapsules based on multilayer assembly of ethanol-soluble polyimide brushes and magnetite nanoparticles: preparation and response to magnetic field gradient
Microcapsules consisting of a calcium carbonate core template surrounded by shells containing magnetite nanoparticles and ethanol-soluble polyimide brushes with polymethacrylic acid side chains were assembled ...
-
Article
An investigation of the morphology of Langmuir films based on molecular polyimide brushes containing magnetite nanoparticles
Molecular brushes having a polyimide (PI) backbone with degree of polycondensation n = 33 and polymethylmethacrylate (PMMA) side chains with two different degrees of polymerization (m = 63 and m = 114) were synth...
-
Article
Calcium carbonate microparticles containing a photosensitizer photosens: Preparation, ultrasound stimulated dye release, and in vivo application
Calcium carbonate microparticles with a size of 0.9 ± 0.2 μm containing a photosensitizer Photosens in a concentration of 2.0 ± 0.2 wt % were prepared by ultrasound-stimulated coprecipitation (20 kHz, 1W/cm2). It...
-
Article
Antireflective coatings based on amorphous submicron silica particles for silicate glass: Preparation, morphology of surface, optical properties
The structure and properties of dense and porous single-layer antireflective coatings based on fractal and spherical silica particles, respectively, used for silicate glass have been studied. The conditions ne...
-
Article
Studying the spectra of thermal magnons in composite materials with embedded magnetite nanoparticles using Brillouin light-scattering spectroscopy
We describe the preparation of multilayer composite coating comprising nanoparticles of magnetite on metal substrates previously modified by sonication. Using the Brillouin light-scattering method, we have inv...
-
Article
Synthesis of magnetite hydrosols in inert atmosphere
A setup is described for magnetite hydrosol synthesis in inert atmosphere via coprecipitation of bi- and trivalent iron salts in the presence of a base with the formation of nanoparticles having desired sizes ...
-
Article
Synthesis of magnetite hydrosols and assessment of their impact on living systems at the cellular and tissue levels using MRI and morphological investigation
MRI and morphological investigations into internal organ tissues and tumors in rats with liver cancer PC-1 under the intraperitoneal administration of magnetite hydrosols have been performed. The absence of an...
-
Article
Effect of a Nanodimensional Polyethylenimine Layer on Current–Voltage Characteristics of Hybrid Structures Based on Single-Crystal Silicon
In this paper the study of the tunneling current–voltage (I–V) characteristics of silicon surfaces with n- and p-type conductivity as a function of roughness in the presence of an adsorbed insulating layer of pol...
-
Article
Nanodimensional layers based on polyamic acids and polyamidoimides as protective and passivate coatings in laser AlGaAs/GaAs heterostructures
A study of the application of polyamic acids (PAA) and polyamidoimides (PAI) in manufacturing passivate and protective coatings for the crystal front facet of a semiconductor laser was carried out. The morphol...
-
Article
Functionalization of direct-emulsion disperse-phase surface by zinc oxide nanoparticles using layer-by-layer electrostatic assembly
Polyelectrolyte and nanocomposite (zinc oxide nanoparticles/polymer) coatings on the surface of a direct-emulsion disperse phase containing fluorescent dye were obtained using layer-by-layer electrostatic asse...
-
Article
Acute toxicity analysis of polyelectrolyte microcapsules with zinc oxide nanoparticles and microcapsule shell components using aquatic organisms
Nanocomposite microcapsules with zinc oxide nanoparticles in their shells were fabricated using layer-by-layer assembly. An investigation of the toxic effect of microcapsules and their constituent components w...
-
Article
Liquid crystal-in-water emulsion stabilized by layer-by-layer adsorption of polyelectrolytes and magnetite nanoparticles
We propose a method for stabilizing and modifying the dispersed phase of a liquid crystal-in-water (LC/water) emulsion using the sequential adsorption of polyelectrolytes and magnetite nanoparticles, which lea...
-
Article
Open AccessSurface morphology and optical and magnetic properties of polyelectrolyte/magnetite nanoparticles nanofilms
Polyelectrolyte/iron oxide nanoparticles composite nanocoatings are fabricated by polyionic assembly. They are characterized by atomic force microscopy, electron magnetic resonance, ellipsometry, and secondary...
-
Article
Effect of the size of colloidal gold nanoparticles on the physical parameters of nanocomposite microcapsule shells
Polyelectrolyte shells of nanocomposite microcapsules containing colloidal gold nanoparticles of different diameters (5, 10, or 20 nm) are formed by the polyion assembly procedure. Microcapsules with different...
-
Article
Nanocomposite microcapsules containing nanoparticles of colloidal gold and magnetite: Their preparation and characterization
Aqueous suspensions of nanocomposite microcapsules containing gold (5, 10, and 20 nm) and magnetite nanoparticles in the structure of polyelectrolyte shells are prepared by the polyionic assembly procedure. Th...
-
Article
Open AccessAtomic force microscopy characterization of ultrasound-sensitive nanocomposite microcapsules
Polyelectrolyte and nanocomposite microcapsules with shells containing iron oxide (Fe3O4 magnetite) nanoparticles have been obtained using the layer-by-layer polyion assembly technique. The volume fraction of nan...
