Articles techniques et présentations

A logic gate performs a certain Boolean logic operation on one or more logical inputs and produces a single logical output. The logic values are either “true” or “false.” Logic gates are bistable devices, that is, they may yield one of these two possible stable outputs. The NAND logic is ... En savoir plus

Liquid transport in lab-on-a-chip (LOC) devices occurs through a microchannel that uses an electroosmotic flow actuation mechanism. This method has a plug-like velocity profile, which is ideal in species transport and in wall-bounded reactions. Under substantial joule heating, it is not ... En savoir plus

Structural analysis is performed to check the durability of Engine mounts for a given load and support conditions. The engine mount bracket is subjected to loads primarily due to weight of the powertrain and the unbalanced torque. In this analysis, the component is optimized such that ... En savoir plus

A Helmholtz resonator type acoustic sensor has been designed using analytical method and finite element modeling software, COMSOL Multiphysics®. The acoustic sensor is an aluminium double frustum, hour glass, shaped with the resonator at the bottom and an acoustic horn above to amplify ... En savoir plus

This paper demonstrates the design of a tunable MEMS capacitor with two plates (one movable and one fixed). The response time obtained is 5μs. The tunable capacitor plays an important role in RF circuits. We focus on a tunable capacitor simulated using COMSOL Multiphysics®. In an ... En savoir plus

Monitoring the Central aorta is a more effective way to diagnose cardiovascular diseases than conventional techniques. Approximately, six million people in the world are currently living with aortic aneurysm and every year 750,000 new cases are diagnosed. This paper presents the design ... En savoir plus

Ejectors are the devices used to carry out mixing and recompression of two fluid streams, one with higher energy and the other with lower Energy. The high energy fluid is passed through the converging nozzle of ejector to very high velocities which in turn creates suction and draws the ... En savoir plus

The most commonly used type of resonator is the AT-cut, where the quartz blank is in the form of a thin plate cut at an angle to the optic axis of the crystal. This paper reports the modeling of a quartz oscillator for a resonant frequency analysis based on piezoelectric effects. The ... En savoir plus

Since the advent of Terhertz(THz) technology, improving the THz emission power has been one of the major research goal. One of the methods to increase the THz emission power is to increase the coupling of excitation laser light to the dielectric substrate.The field of nano-plasmonics ... En savoir plus

III-nitride semiconductors and gallium nitride in particular have recently become increasingly important for optoelectronic applications like LEDs, solar cells and photodetectors due to their attractive properties like wide and direct bandgap, high power handling capability and high ... En savoir plus