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Health-conscious battery management is one of the main facilitators for widespread commercialization of Li-ion batteries as the primary power source in electrified transportation and portable electronics and as the backup source in stationary energy storage systems. The majority of the existing Battery Management Systems (BMSs) define battery State of Health (SOH) in terms of internal resistance increase...
Since the discovery of a theoretical idea of spin-transfer torque (STT) [1], STT-MRAM has attracted a great interest as a candidate of universal memory.
We have developed a novel three dimensional tactile sensor based on vertically aligned carbon nanotubes. The carbon nanotubes were directly synthesized on silicon microstructures and these CNTs-on-microstructures were integrated to flexible polydimethylsiloxane layers. Each tactile sensor has four sensing parts and the direction of force can be detected by monitoring the increase or decrease of electrical...
In this study, the effect of Ag content (1.8 & 2.3 wt.%) on the electromigration lifetimes and microstructure evolution of Sn-Ag solder bumps were investigated at highly accelerated electromigration test conditions. Electromigration of solder joint under high current stressing has been an important concern of the reliabilities in solder joint system, since the higher device density and increasing...
A power switching system combining a MEMS (Microelectromechanical systems) switch and an arc suppression circuit has been developed. The system, using a single 3mm × 3mm MEMS switch die coupled with protection electronics, has been demonstrated to switch both resistive loads and inductive loads to a peak power of around 800W. The entire opening and closing operations are completed in a few microseconds,...
This paper reports on new concept consisting of all-oxide-based device component for future high density non-volatile data storage with stackable structure. We demonstrate a GaInZnO (GIZO) thin film transistors (TFTs) integrated with 1D (CuO/InZnO)-1R (NiO) (one diode-one resistor) structure oxide memory node element. RRAM (Resistance Random Access Memory) has provided advantages in fabrication which...
A surface-micromachined compact microheater for gas sensing applications fabricated on a silicon substrate is presented. The heater was fabricated with a compatible CMOS process and its membrane was released using XeF2 isotropic silicon etching. The membrane had SiO2/SixNy/SiO2 layers (0.4/0.3/0.3 mum) in order to restrict the initial stress after the release, resulting in less than 2.5 mum height...
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