Engineering

Flexible sensors with zero Poisson's ratio

Although flexible sensors have gained a surge of exotic sensing capabilities in the past decade, the complex deformation, which usually results from forces or strains from multi-axes, can be challenging to measure due to ...

Energy & Green Tech

New method monitors grid stability with hydropower project signals

Scientists at Oak Ridge National Laboratory and the University of Tennessee, Knoxville, have developed an algorithm to predict electric grid stability using signals from pumped storage hydropower projects. The method provides ...

Security

A camera-based anti-facial recognition technique

Facial recognition systems, computational tools that can recognize individuals in images or video footage, are now widely employed worldwide. Some users and developers, however, have raised privacy-related concerns, as by ...

Engineering

New noise analysis model targets resolution

In recent years, there has been a growing interest in developing mode-localized sensors that focus on the strength of their signals for better sensitivity.

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Sensor

A sensor 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 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, all sensors need to be calibrated against known standards.

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