The purpose of this work is to improve the operational characteristics actuators based on ionic polymer-metal composites (IPMC) by improving their manufacture technology. optimal thickness ion-exchange membrane was determined. technology metal electrode deposition, composition actuator electrolyte solution and storage method were optimized.

Polyaniline-based composites designed to ensure the electromagnetic compatibility of electronic devices were obtained. The surface morphologies obtained films studied using optical and electron microscopy. electrical resistivity polyaniline (PANI) measured at various thicknesses. For compositions thicknesses, frequency dependencies complex dielectric permittivity, in range 100–2000 kHz, as well radiation (EMR) absorption coefficient 0.05–2 GHz It was found that flexible gelatin-PANI...

A prototype of a membrane valveless microfluidic pump based on IPMC actuator for the transport biological fluids and drug delivery was developed. The size is 58.3×50.8×18 mm. Pump consists 4 layers, which were made from polycarbonate polymethylmethacrylate as well latex diaphragm. movement diaphragm in carried out by with 10×5×0,3 mm, located separate chamber filled water. direction fluid flow determined conical diffuser / nozzle elements solution angle 5° inlet outlet channels pump....

Oncotheranostic drugs based on magnetic nanoparticles (MNPs) are a promising method for the treatment and diagnosis of cancer. Control parameters properties MNPs is important both at all stages their synthesis during direct use in clinical practice. This work considers microfluidic approach to assessing diffusion various types. Using image analysis channel, coefficients ferromagnetic liposomes were determined. Also, using systems, behavior these particles suspension-hydrogel interface...

Microneedle arrays (MNA) are used to enhance the efficiency of transdermal drug delivery. Within framework this work, various techniques obtaining MNA were investigated: inkjet printing, stereolithographic 3D and injection molding. Experimental samples obtained using a PiXDRO LP50 printer. The disadvantage technology was limitation maximum height resulting structures (about 300 nm). In turn, method printing showed insufficient resolution for manufacture MNA, so only half-molds. To cast...

The main methods for microneedles (MN) producing include photopolymer 3D printing, laser processing and injection molding, the most suitable mass production. Due to possible need reconfiguring MN, a replaceable element in mold was used, which is obtained using multi-jet modeling printing with subsequent refinement micro-lathe tool. To obtain channel an enamelled copper wire diameter of 50 μm stretched along centers symmetry cross sections. reduce requirements accuracy manufacturing, its...

ε-Fe2O3 is an iron(III) oxide polymorph attracting increasing interest due to its unique magnetic properties combining extremely high coercivity and relatively large saturation magnetization. We review existing methods for the synthesis focusing on speed, repeatability, manufacturability purity of final product. Samples have been synthesized using two that appear most promising: silica gel impregnation microemulsion. In both cases, α-Fe2O3 are present in product as attested by X-ray...

Abstract Experimental samples of ionic electroactive actuators with poly(3,4-ethylenedioxythiophene) electrodes (PEDOT) have been developed and produced. Measurements amplitudes a displacement, frequency power characteristics produced were carried out. The influence the membrane solvent, as well EDOT polymerization time on sample structure output actuators, was determined.

The goal of this work was to investigate the possibility using an ionic polymer-metal composite actuator (IPMC-actuator) as main element a motion drive for walking robotic system. An module developed, which consists two actuators connected in parallel and allowing "leg" system move planes. Due use IMPC-actuator it possible develop with dimensions 118x114x62.4 mm, moving at speed 1 mm/s step 33 mm mass 70 g.

IPMC actuators with Pt electrodes based on MF4SK ion-exchange membrane in H <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> and Cu xmlns:xlink="http://www.w3.org/1999/xlink">2+</sup> forms were obtained. The electromechanical characteristics of the resulting investigated when working air aqueous medium. An increase displacement amplitude -form compared to both water has been shown. Displacement amplitudes at a control DC voltage or AC...

Heart rate is one of the main vital signs, and its measurement most accessible informative method for assessing body's response to physical activity. To measure heart rate, a monitor based on an IPMC sensor, fixed over radial artery in area wrist joint, proposed. As result studying characteristics sensor with dimensions 10 × 5 ×0.3 mm range input displacement amplitudes 0.1…1 mm, linear sensitivity coefficient 0.9 mV/mm was obtained. The possibility pulse wave registration using included...

Micromechanical actuators based on ionic polymer-metal composites (IPMCs) are promising energy converters for microrobotics and medicine. In this work, we investigated the influence of thickness variation MF-4SK membrane (90 $290 \mu \mathrm{m}$) lifetime actuators, dependence deformation amplitude frequency input signal, and, accordingly, resonant frequency. Based results experiment, it was found that a with $90 \mathrm{m}$ characterized by shorter amplitude, their is shifted to...

This study addresses issues in developing spatially controlled magnetic fields for particle guidance, synthesizing biocompatible and chemically stable MNPs enhancing their specificity to pathological cells through chemical modifications, personalized adjustments, highlighting the potential of tumor-on-a-chip systems, which can simulate tissue environments assess drug efficacy dosage a setting. The research focused on two MNP types, uncoated magnetite nanoparticles (mMNPs) carboxymethyl...

The use of microneedles for discrete and continuous monitoring correction the body state is a progressive direction in personalized medicine. desire to minimize consequences invasive diagnostic methods increase effectiveness drug therapeutic effects determines intellectualization microneedles, their designs technologies use. Microneedles arrays are presented as complex functional microsystems, creation which based on micro- nanote-chnology processes, well heterogeneous organic-inorganic compositions.

IPMC actuators have great potential in robotics due to low control voltages and high output displacements. A major limitation is the use of aqueous electrolytes, which reduces time their continuous operation air water evaporation electrolysis. To increase it, two approaches been investigated: encapsulation non-aqueous electrolytes. It was experimentally found that water-impregnated actuator after with a 15 μm-thick parylene layer increased by 10 times at signal 4 V 1 Hz. However, this...

The development of microfluidics leads to the need design high-performance micropumps with minimal overall dimensions. In order use a valveless membrane micropump in portable microfluidic system, influence geometric parameters hydraulic drive elements based on IPMC actuator its performance was studied. manufactured dimensions 24x23x6 mm and maximum 3.39 μL/s.

A swimming robot with stingray-like propulsors was developed using twelve drives based on IPMC actuators and two tail fins. The propulsor consists of an active part (six polymer connected in parallel) a passive part. Such are located the sides middle system make translational motions "up down". An autonomous remote control for its control. In addition, algorithm lateral fin movement to motion robotic fish forward. maximum speed 40 mm/s at frequency 0.4 Hz.

Epsilon-iron oxide (ε-Fe2O3) is one of Fe2O3 polymorphs existing in the narrow grainsize range (8–30 nm). has higher coercive force compared to traditional hard magnetic materials (e.g. Sm-Co or Nd-Fe-B alloys). At same time, it does not contain rare-earth elements. Nanoparticles ε-Fe2O3 can be used biomedicine as hyperthermia agents with high specific absorption rate due hysteresis losses, and low toxicity. In this work, nanoparticles have been prepared using silica gel matrices surface...

One of the devices for remote control manipulator is a sensor glove, which generates signal when finger operator wearing glove bent. The paper presents made in form human hand, was remotely controlled by and able to execute basic grip types hand. sensors were electroactive polymers with hybrid electrodes, which, compared other polymers, are characterized stable change resistance over time they displaced from their original position, also have longer service life. Such system can be used...

A method has been developed for the production of gelatin-based polymer composites with introduced particles conductive polymers. Flexible samples different polyaniline and PEDOT:PSS contents a thickness 0.2–0.4 mm were obtained. The frequency dependences complex permittivity electromagnetic wave absorption coefficient investigated. real part composite films depends on content does not exceed 10 in range 10–1000 kHz. 50–2000 MHz obtained reaches 5 dB (three times power). Thus, materials...