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Development of nano-electromechanical relays (NEMRs) has led to a new focus on the thermal behavior at nano-scale contacts. The asperity-asperity contacts in NEMRs are susceptible to deformation and melting due to high pressures and temperatures at the contacting surfaces. Furthermore, because of their small size, these contacts are very difficult to analyze either experimentally or theoretically...
In this paper preliminary investigations of electrical properties of new Thermal Interface Materials (TIMs') are presented and discussed. Investigated TIMs are based on mixture of silver flakes and silver nano-particles (nano-Ag) with high content of silver (more than 90% weight). After curing and sintering of such materials, as a result, a bulk, homogenous silver layer with good electrical and mechanical...
Low-temperature sintering of nanosilver is emerging as a promising lead-free die-attach solution for packaging of semiconductor devices for high-power density or high-temperature applications. However, the bonding process requires either a relatively long heating cycle up to one hour under zero pressure or hot pressing at which the parts are under several MPa of uniaxial stress for tens of seconds...
This paper reports a novel maskless nanoscale material etching method based on microplasma devices arrays. That is, inverted pyramidal microplasma devices arrays are integrated into the scanning probe tips array to realize maskless nanoscale material etching with advantages of high efficiency, large area and low cost. A 4×4 inverted pyramidal microplasma device array with each microcavity dimension...
In this work we present the design and fabrication of a test chip to be used for the characterization of the main electrical, mechanical and thermal properties of the structural materials involved in the development of polysilicon-based electrothermal actuators. With this combined bulk/surface micromachined chip, parameters such as Young's modulus (E), stretching or compression stresses (±σ), stress...
Design of distribution substation earthing grid can be very challenging in high resistivity soils especially in two layer soils where the top layer resistivity is lower than the bottom layer. This paper presents the design of a distribution substation earth grid using Current Distribution Electromagnetic Field Grounding Soil Structure Analysis Software (CDEGS). Soil resistivity measurement was carried...
Nanoionic based resistive switching memory cells are nowadays being implemented in novel memory technology known as Conductive Bridging Random Access Memory. These memory cells, known as programmable metallization cells, are a promising memory technology not only due to their scaling potential but also because of characteristics such as non-volatility, low-power operation and speed. Resistance switching...
The role of interconnect in an integrated circuit is to enable effective passing of clock and other signals in addition to providing power to various parts of the circuit on a chip. The advent of sub-quarter-micron IC technologies has forced dramatic changes in the design and manufacturing methodologies for integrated circuits and systems. The paradigm shift for interconnect which was once considered...
Memristor based logic and memories are increasingly becoming one of the fundamental building blocks for future system design. Hence, it is important to explore various methodologies for implementing these blocks. In this paper, we present a novel Complementary Resistive Switching (CRS) based stateful logic operations using material implication. The proposed solution benefits from exponential reduction...
Filter networks consisting of a Multi Layer Ceramic Capacitor and maybe a resistor are commonly used as off-chip ESD-protection. In this paper methods are proposed to characterize and model the capacitor's high voltage behavior and to quantify the degradation due to pulse load. The model was verified in different setups.
Electrical arcs are of great concern for power electronic systems. Modeling of arc faults to represent and predict arc characteristics and transient responses within the power system is now receiving considerable research attention. In this paper, a series DC arc fault demonstration rig is designed to generate series arcs by moving one electrode away from a stationary one with a stepper motor. Experimental...
With the rapid progress in science and technology, the human society advances from industrial society to post-industrial society. People pay more and more attention to the role of information. Objective demand for information greatly stimulates the development of information technology, such as TCM Literature and Database, and global information network has been set up quickly. Information resources...
The resistive switching behavior recently observed in silicon oxide (SiOX) makes this material attractive to embedded resistive random access memory (RRAM) fabrication due to process compatibility. In SiOX-based RRAM devices, switching mechanism is closely correlated with defects in the oxides. Therefore developing a method to control the defects is necessary for performance enhancement. In this paper,...
Al/Ta2O5/Pt RRAM cell was successfully demonstrated with stable bipolar switching. Band alignment for the structure of Al/Ta2O5/Pt was obtained using high-resolution X-ray photoelectron spectroscopy to investigate resistance switching behavior. Hole barrier heights of Ta2O5 on metals Pt and Al were extracted using core level and valence band spectra. The energy band alignments of Pt/TaOx and Al/TaO...
To research the influence of inorganic fillers on arc resistance of silicone rubber, alumina trihydrate (Al(OH)3, ATH), boron nitride (BN) were chosen as fillers, unary filled and binary filled silicone rubber (SIR) specimens were prepared, the dispersion of organic fillers in SIR were characterized by scanning electron microscope (SEM), arc resistance of each specimen were investigated by high voltage...
In the framework of elaborating a methodology for testing the resistance to electrical treeing of polyethylene (PE) for HVDC applications, electrical tree inception tests were performed before and after a thermal ageing on XLPE samples. For this purpose test objects of wire-plane electrode geometry were exposed to various voltage regimes. The obtained results show that a DC pre-stress followed by...
A new magnetic-catalytic sensing mechanism to increase sensitivity for CMOS MEMS gas sensor with mesh stacked sensing electrodes is proposed. Beyond the conventional power dissipation of heating to maintain a certain working temperature, a novel gas sensor with magnetic-catalytic mechanism works at the ambient temperature without the consideration of active heating. The design and fabrication is realized...
There has recently been increased interest in carbon-based resistive random-access (RRAM) memory. Carbon-based RRAM has the potential to scale to atomic dimensions, resulting in ultra-high-density and low-power memory. Here we report reversible unipolar resistance switching in hydrogenated amorphous carbon. The devices used in this study are fabricated using e-beam lithography with built-in series...
Electric arcs in electrical DC systems represent both an enormous challenge to switchgear (switch arc) and a serious hazard to humans and the whole system (fault arc). Hitherto existing literature states an negative impact of a parallel capacitance on the arc existence. For low voltage DC systems the behavior of free burning arcs in air is analyzed. The formation of arc-oscillations due to a parallel...
This paper provides a study of the main stator thermal barrier of an inner-rotor cylindrical brushless permanent magnet (BPM) synchronous servomotor with a concentrated winding configuration. Operating synchronous servomotors over continuous periods requires efficient thermal distribution of heat within the motor and also efficient dissipation of heat away from the motor. This is necessary to ensure...
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