Articles techniques et présentations

Giant vesicles (GVs) are artificial chemical systems largely used as cell models, since they are micrometer-sized closed compartments bounded by a semi-permeable membrane, which in turn is composed by self-assembling amphiphiles. By opportunely engineering the lipid membrane and by ... En savoir plus

Acoustic standing waves can be used to manipulate micrometer sized particles, cells and organisms. In most applications these objects are driven towards pressure nodal lines, predominantly by the primary acoustic radiation force. Interestingly, at intermediate particle concentrations, ... En savoir plus

Non-evaporable getters (NEG) chambers are 316L vacuum chambers coated with a TiZrV layer, widely used in accelerator systems. This particular alloy works, when thermally activated, as a linear pump for almost all gas species inside the chamber: molecules are adsorbed on the surface or ... En savoir plus

The design of a right contour/structure of the NFC-antenna is presented. The NFC-reader-antenna is applied later to communicate with the NFC-tag (transponder) of a smart phone placed in the phone box of the car. The NFC-reader-antenna with selected contour is printed directly on the PCB ... En savoir plus

Food dehydration processes assisted by high-power ultrasound (HPU) have become an efficient technology with a great potential in its implementation. To produce the desired effects in the samples, it is necessary that the dehydration system, composed by a HPU transducer and an ultrasonic ... En savoir plus

When concrete is subjected to high temperature, capillary water evaporates and chemically bound water is released due to dehydration. This results in an increase of pore pressure, which is believed to be one of the mechanisms leading to spalling. Spalling of concrete is of high concern ... En savoir plus

Plasma torches are used in processing of materials as well as in the energy industry for producing plasma. In a non-transferred arc plasma torch, an electric arc can be initiated by applying a direct current (DC) between the cathode and anode, both placed inside the torch. Then, the ... En savoir plus

A model for coupled heat and mass transfer in porous, capillary-active materials is validated against experimental data obtained by drying calcium silicate specimens. The accuracy of the numerical solution is qualitatively investigated by considering mass conservation for a set of ... En savoir plus

Solar thermal energy, compared to fossil fuels, is an environmentally friendly alternative for heating and hot water production. Recent research suggests that polymeric materials can be a cost-saving and environmentally friendly alternative to the common metals used in solar thermal ... En savoir plus

In this paper, the "Morton Effect" is analyzed. This phenomenon is a particular kind of rotor instability due to non-uniform journal bearing heating. In this paper, an overview of the previous works has been done. After this preliminary study, a specific approach suggested by the ... En savoir plus