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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 62
Siahkamari, Hesam , Jahanbakhshi, Maryam , Lotfi, Saeedeh
New Approach In Designing Hexagonal-Shaped Antenna Based On Area Analysis

n this article, a new method is presented to calculate dimensions of a hexagonal-shaped antenna based on frequency and rectangular-shaped antenna. The frequency responses of the presented antenna are compared with rectangular shape antenna and both antennas are designed at ...

Hirman, Martin , Navrátil, Jiří , Steiner, František , Hamáček, Aleš
Higher Temperature Washing of Electrically Connected SMD Components onto the Textile Ribbons

This article addresses the higher temperature washing reliability research of interconnection technique for mounting SMD (surface mounted device) components onto conductive stretchable textile ribbons. It can be concluded that both tested interconnection technologies (i.e. low-temperature soldering and adhesive...

Balabán, Jan , Blecha, Tomáš
Textile Sensor for Skin Hydration Measurement

This paper deals with the design and realization of capacitive textile sensors for skin hydration measurement. Skin hydration level is an important parameter for the healthy condition of the body and is also often used in dermatology and cosmetology. Many commercial devices are kno...

Rostás, Kateřina , Navrátil, Jiří , Soukup, Radek , Moravcová, Daniela
The Influence of Washing Cycles on the Conductive Threads Used in E-textiles

E-textiles and smart textiles have already reached a certain stage of development. Nowadays, smart textiles designed for medicine or sports have been developed to be worn directly on the body, just like conventional textiles. This is the reason, why e-textiles and smart textiles sh...

Michal, David , Janda, Martin , Řeboun, Jan
Analysis and Sintering Optimization of Nanoparticle Paste with High Silver Content

This paper deals with analysis, testing, and process optimization of new nanoparticle silvering paste with high silver content. Specifically, on ceramic substrates with printed conductive patterns created by thick film technology. Sintering is currently one of the most anticipated ways of co...

Rous, Pavel , Pavlozas, Antonios Dionysios , Steiner, František
Influence of PCB Surface Finishes on Intermetallic Compound Growth

This article presents research focused on the intermetallic compound growing under different conditions. The quality of solder joints depends on many factors, one of which is the thickness of the intermetallic layer and its composition. Combination of multiple reflow processes which is ...

Radouchová, Michaela , Suchý, Stanislav , Blecha, Tomáš
Embroidered Flexible Elastic Textile Antenna as Strain Sensor

This paper is focused on the design and testing of embroidered flexible elastic textile antennas for strain sensing based on the evaluation of changes in their electrical parameters. Samples of planar textile antennas for strain sensing were prepared by embroidered technology on elastic...

Janda, Martin , Rostás, Kateřina , Pretl, Silvan , Řeboun, Jan
Method of Connecting Printed and Embroidered Conductive Paths in Smart Textiles

This paper proposes a method of connecting conductive paths realized by embroidering and printing in smart textiles. The embroidering of conductive threads offers great electrical conductivity and the level of integration while technologies of printed electronics offer the realization of fine...

Blecha, Tomáš , Moravcová, Daniela
Methods for the Capacity Increasing of Textile Capacitors

In smart textiles, there is an effort to create electronic elements directly as part of the carrier fabric, where conductive threads are used for their construction. Planar capacitors are electronic components that can be implemented using textile technologies. Their disadvantages are relati...

Janda, Martin , Pretl, Silvan , Michal, David , Řeboun, Jan
Examination of Wet Assembling Methods in Printed Flexible Electronics

This paper examines two methods of assembling electronics SMD components on flexible substrates with low-temperature resistance. As a contact medium for interconnection between component and conductive pattern, conductive adhesive MG Chemicals 8331S-15G or conductive Ag printing paste DuPont PE 874&#x...

Kalčík, Jan , Soukup, Radek
Ultrasonic Welded Textile Thermocouples

This article deals with the problems of fabrication and testing of textile thermocouples. Thermocouples were made by ultrasonic welding of hybrid conductive constantan and copper threads. The embroidered thermocouple samples were realized by a 3-point crossing of threads and a 9-point crossi...

Navrátil, Jiří , Šíma, Karel , Řeřicha, Tomáš , Hamáček, Aleš
Preparation and Application of Carbon Nanotubes Ink for Aerosol Jet Printing System

The paper deals with the carbon nanotubes ink preparation and its application for Aerosol Jetprinting system. Aerosol Jetprinter allows using wide range ofmaterials within the meaning of their viscosity, particle size or used solvents. The carbon allotropes (structurally different forms of c...

Šíma, Karel , Štulík, Jiří , Šlauf, Josef , Blecha, Tomáš , Hamáček, Aleš
Investigation of π stacking functionalization of carbon allotropes for RH sensing

This paper is focused on the noncovalent functionalization of CNT by π stacking of molecules for relative humidity (RH) sensing. This type of functionalization is not used frequently, but it potentially offers a simple way how to control the level of functionalization of the c...

Janda, Martin , Syrový, Tomáš , Pretl, Silvan , Vik, Robert , Řeboun, Jan
Characterization of printed thermistors

This paper deals with the characterization of printed thermistors based on metallic oxides. In total, three different thermosensitive printing formulations were tested. Formulations differed in the mechanical properties of a polymeric binder. The long-term stability, calibration curves, hysteresis, and...

Suchý, Stanislav , Moučková, Kateřina , Soukup, Radek
Testing of novel textile capacitive pressure sensors intended for healthcare applications

The paper deals with the design, fabrication and testing of the textile pressure sensors that operate on the principle of capacity change. The sensors, which are based on a multi-layer sandwich arrangement of textile layers, are intended for healthcare applications. The article describe...

Šlauf, Josef , Řeboun, Jan
Effect of the gate electrode/electrolyte interface on OECT performance

An organic electrochemical transistor (OECT) with a standard vertical topology and poly(3,4-ethylene-dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the active material of the channel is presented. It was found that the specific combination of the gate electrode material and electrolyte influences the...

Šíma, Karel , Navrátil, Jiří , Hladíková, Julie , Bouzek, Stanislav , Hamáček, Aleš
Design and Characterization of Embroidered Electroacoustic Transducer

This paper is focused on designing and characterization of embroidered electroacoustic transducer placed on the magnet. This type of transducer can be used as a feedback or notification element in an advanced smart textile system. Multiple transducer designs and threads were used in...

Steiner, František , Hirman, Martin , Prosr, Pavel , Rous, Pavel
Properties verification of improved lead-free solder alloys

This article presents research focused on the reliability of soldered joints. The quality of solder joints is formed already during the soldering process. The first parameter that determines the quality of the connection is solderability. Good solderability is essential for the subsequent&#x...

Janda, Martin , Pretl, Silvan , Řeboun, Jan
In-situ monitoring method for curing of pastes used in printed electronics

In this paper, a method for in-situ monitoring of curing of materials for printed electronics applications is introduced. Materials for printed electronics in form of inks and pastes need to be cured after printing. Curing is an important post-printing process. Curing is often done...

Blecha, Tomáš , Smítka, Václav , Štulík, Jiří
Impedance spectroscopy for sensor elements optimalization

One of the possibilities of evaluating the response of sensor systems is the use of impedance spectroscopy, which identifies changes in impedance in the frequency domain in case of the analytes exposure. However, the high-frequency properties of the sensors are affected by parameters&#x...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 62