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To further extend the scaling trend of traditional CMOS technology, many hybrid architectures integrating emerging device technologies have been proposed recently. Among them, memristor based cross-point memory (MBCPM) demonstrates great potential in data storage and computation. However, accessing a cross-point memory inevitably induces currents flowing through those unselected cells, called as sneak...
We have developed an inexpensive inkjet printing process to fabricate percolation-based resistive strain gauges in a paper substrate. These strain sensors were fabricated by inkjet printing different suspensions containing conductive carbon black (CB). We have measured the resistance of these elements as a function of strain under low frequency cyclic loads to characterize the sensitivity of these...
Because of its simple structure, high density and good scalability, resistive random access memory (RRAM) is expected to be a promising candidate to substitute traditional data storage devices, e.g., hard-disk drive (HDD). In a conventional three-dimensional (3D) bipolar RRAM design, an isolation layer is inserted between two adjacent memory layers. The fabrication of the isolation layer introduces...
Cross-point memory structure suffers from a substantial sneak path leakage and a large degradation of output signal due to the parasitic resistance of the interconnects. In this work, we study the parameter requirements of resistive cross-point memory array under the worst case write and read operation. We focus on the pattern dependence of the memory array and compare the effect of resistance values...
Hardware, i.e. electronics and sensors, have to be packaged in a special way to bear the heavy mechanical loads, which are encountered in deep sea applications. Expensive materials and pressure resistant housings are often used. Another way to fulfill the requirements is to use a pressure neutral (pressure tolerant) approach by casting the components into an appropriate material. This might be a hard...
An electrochemical impedance method to detect concentrations of the local anesthetics Levobupivacaine was implemented and the concentration could be detected to 1 ppm. Electropolymerized pyrrole to polypyrrole (Ppy) and carbon nanotube (CNT) was fabricated on gold electrodes and used as sensors. Various concentrations of Levobupivacaine from 1 to 500 ppm were prepared in DI water as the test samples.
The accumulation of fatigue damage in critical structural members of the aging aircrafts is an increasingly complex and continuing high priority problem. There is growing evidence that (i) multiple site damage or multiple element damage may compromise fail safety in older aircrafts, and (ii) significant fatigue damage, with subsequent formation of cracks, may occur at locations not considered in original...
A micro flow sensor with high temperature coefficient of resistance (TCR) is very important because of its high sensitivity of flow sensors. Different from the conventional positive-TCR Pt film used in micro flow sensor with self-heating, higher negative-TCR micro flow sensor without self-heating is developed and fabricated in this research. The novel TaN-material micro liquid flow sensors are fabricated...
We report novel p-type behaviour in undoped SnO2 thin films irradiated with 75 MeV Ni+ ion beam. Gas response of the irradiated films with NH3 (reducing) and NO2 (oxidizing) gases shows an increase and decrease in resistance respectively indicating p-type conduction that also increases with increase in ion fluence. Photoluminescence spectroscopy of the irradiated films shows strong yellow peak corresponding...
Active phased array antennas in state of art radars, adopt many high power amplifiers. High power transmit-receive modules are assembled in dense electronic environments and they have to cope with severe environmental operative condition. Radar state of art systemic signal processing requires growing and enormous power calculation in order to obtain unprecedented hard real-time performances as well...
In this study, we fabricated in-plane thermoelectric micro-generators (4 mm times 4 mm) based on bismuth telluride thin films by using flash evaporation method. The thermoelectric properties of as-grown thin films are lower than those of bulk materials. Therefore the as-grown thin films were annealed in hydrogen at atmospheric pressure for 1 hour in a temperature range of 200 degC. to 400degC. By...
The real time monitoring and control of resistance spot welds is a problem of critical importance in automotive and many other manufacturing industries. However, till this date, there are no reliable, low-cost, non-destructive techniques for predicting the size and strength of the weld nuggets in real time. This paper investigates the usage of voltage, current, and force data for the above tasks....
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