This paper uses fundamental models to derive design conditions for maximum speed and resolution in CMOS transimpedance comparators. We distinguish two basic comparator architectures depending on whether the input sensing node is resistive or capacitive, and show that each type yields advantages for different ranges of input current. Then, we introduce a class of current comparator structures wh...

Robot tactile sensation can enhance human-robot communication in terms of safety, reliability and accuracy. The final goal of our project is to widely cover a robot body with a large number of tactile sensors, which has significant advantages such as accurate object recognition, high sensitivity and high redundancy. In this study, we developed a multi-sensor system with dedicated Complementary ...

Process variation has recently emerged as a major concern in the design of circuits including interconnect in current nanometer regime. Process variation leads to uncertainties of circuit performances such as propagation delay. The performance of VLSI/ULSI chip is becoming less predictable as MOSFET channel dimensions shrinks to nanometer scale. The reduced predictability can be ascribed to poo...

Progress in high-speed GaAs charge-coupled device (CCD) research is described. Experimental and modelling results are reported for two different structures; capacitive gate CCD's and resistive gate CCD's. A charge packet replicator/subtractor circuit is discussed.

This paper proposes a novel, tunable AC coupled capacitive feedback amplifier, exhibiting an ultra-low high pass corner frequency. is accomplished by actively boosting the output resistive value of MOS transistor in weak inversion. The circuit based on more general architecture, recently proposed authors, and analyzed terms its capability to achieve frequency operation, DC performance, noise. t...

Purpose: Radiofrequency-based electrophysical agents are widely used in therapy-related clinical practice for their thermal effects; mainly relieving pain and inflammation and improving tissue extensibility. The most commonly used and researched are shortwave therapies that operate at 27.12 megahertz. Although relatively new, electrophysical agents employing much lower frequencies have also eme...

Accurate plantar pressure measurements are mandatory in both clinical and research contexts. Differences in accuracy, precision and reliability of the available devices have prevented so far the onset of standardization processes or the definition of reliable reference datasets. In order to comparatively assess the appropriateness of the most used pressure measurement devices (PMD) on-the-marke...

This study developed portable, non-invasive flexible humidity and temperature microsensors and an in situ wireless sensing system for a proton exchange membrane fuel cell (PEMFC). The system integrated three parts: a flexible capacitive humidity microsensor, a flexible resistive temperature microsensor, and a radio frequency (RF) module for signal transmission. The results show that the capacit...

DOI: 10.1002/admt.201700284 system.[11] Researchers have developed highly stretchable strain sensors made of compliant elastomers and various conductive materials, such as silver nanowire,[12] carbon nanotube (CNT),[13–18] carbon grease,[19] graphene,[20] graphite,[21] laser-carbonized polyimide,[22] conductive acrylic elastomer,[10] liquid metal,[23,24] ionic liquid,[25–27] and conductive fabr...