In this paper, we present a novel microfluidic system dedicated to the application of ultra short pulses (i.e. nanopulses) on cells and the visualization of their effects. Cell plasma membranes can be rendered permeable by the use of nanosecond pulsed electric field. In conventional macroscopic electroporation chambers, the typical pulse duration is on the order of several hundred microseconds ...

From the low frequency alternating current impedance and the volume concentrations of suspensions of Arbacia eggs, it is shown that the high resistance membrane is either at or very near the plasma membrane for both unfertilized and fertilized eggs, and that the specific resistances of the perivitelline space and fertilization membrane are not greatly different from that of sea water. The effec...

We develop an analytical framework for the analysis of planar chiral multi-split rings, based on a Fourier series expansion of the induced current. The number, width, and location of each split (gap) is arbitrary. Provision is made for the possibility of inserting lumped active or passive impedance loads in the gaps. The model demonstrates the hallmark of planar chirality and its consequent mag...

Mechanical impedance is an important factor that the central nervous system takes into account while coordinating a motion. This research work thus aims to develop a new measurement for monitoring dynamic changes of mechanical impedance. The method is introduced and validated in the context. The results show that device correctly measures the dynamic force and impedance of an eccentric linear s...

− The paper presents an impedance analyzer designed for impedance spectroscopy of objects located in the field. The use of the specialized microsystem AD5933 was assumed. The analysis and tests of the microsystem in the configuration proposed by the manufacturer showed the limitations having meaningful influence on the impedance measurement accuracy. In order to eliminate disadvantages of the m...

The increasing number of applications of electrical bioimpedance measurements in biomedical practice, together with continuous advances in textile technology, has encouraged several researchers to make the first attempts to develop portable, even wearable, electrical bioimpedance measurement systems. The main target of these systems is personal and home monitoring. Analog Devices has made avail...

Modern electric distribution systems typically contain several feedback-controlled parallel inverters that together form a complex power system. Consequently, number of issues related to stability arise due interactions among multiple inverter subsystems. Recent studies have presented methods where the and other dynamic characteristics paralleled system can be effectively analyzed using impedan...