Electronics & Semiconductors

Dark current modeling of thick perovskite X-ray detectors

X-ray detection is widely used in medical imaging, radioactivity detection, security checking, industrial flaw inspection, and so on. In recent years, metal halide perovskites have demonstrated excellent performances in the ...

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Preventing vehicle crashes by learning from insects

Despite only about 25% of car travel happening after dark, almost half of fatal accidents occur at night. As our vehicles become more advanced and even autonomous, the ways of detecting and avoiding these collisions must ...


Do autonomous driving features really make roads safer?

In recent years, more vehicles include partially autonomous driving features, such as blind spot detectors, automatic braking and lane sensing, which are said to increase safety. However, a recent study by researchers from ...


NTSB: Require small planes to have carbon monoxide detectors

U.S. crash investigators are urging the Federal Aviation Administration to require private planes to be equipped with carbon monoxide detectors, citing deadly crashes that were attributed to poisoning by the odorless gas.

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A sensor (also called detector) is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument. For example, a mercury-in-glass thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, most sensors are calibrated against known standards.

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