Main aim of this work was investigate mechanical behavior of SMD soldered under nitrogen atmosphere. Several concentrations of nitrogen in soldering area were used. Shear force was established as mechanical parameter for describing of reliability of solder joint. Different sizes of SMD ...

This paper deals with optimizing of copper plating process for manufacturing of small amount of printed circuit boards. This treatise describe problematic of copper plating based on reverse pulse. Main discussed procedure in this paper is activation of printed circuit board surfa...

This work is focused on graphene preparation using the transfer-free method from a metal/C/SiO2/Si structure. We used nickel and cobalt as the metal layer. The technological process of graphene preparation is based on an optimization of metal thickness and anneal...

The aim of the paper is to present results of design spectrometer for toxic gases detection with pyroelectric multispectral detector. Sensing of toxic gases is very important in many applications. Automotive, defense, aerospace, agriculture,chemicalindustry, medicine, environmental,food and drink are...

HF CVD (hot filament chemical vapour deposition) reactor is a technological apparatus in which carbon nanotubes are synthesized on various substrates. The reactor operates on the principle of pyrolysis...

To overcome the p roblem with gradual degradation of organic solar cells the concept of replacement of " worn - out " organic solar cells is proposed. Considering the current costs of installation and current price of ...

This paper deals with the design, manufacturing and measurement of optical pressure sensors developed in Low Temperature Co-fired Ceramic technology. Tw o types of the optical measurement methods were used for the pressure sensing...

A Bal l Grid Array (BGA) component has become one of the most popular packaging alternatives for high density integrated electronics devices. BGA packages become smaller and electrical equipment &...

Gold contacts electrolessly deposited on (CdZn)Te surface from methanol and water - based solutions were studied. We have observed strong injection at voltages higher than 100 V that disa ppeared when using contacts on lateral sides ...

The paper deals with the single-coil metal detector. It presents measurement and test results that predict practical limitations of this detection concept. The studied principle is based on the coil’s inductivity change when a metal object is approached. This princi...