New polymer mixture creates ultra-sensitive heat sensor

Scientists at the Laboratory of Organic Electronics have developed an ultra-sensitive heat sensor that is flexible, transparent and printable. The results have potential for a wide range of applications – from wound healing ...

Virtual tests for autonomous driving systems

Sensors in autonomous vehicles have to be extremely reliable, since in the future motorists will no longer constantly monitor traffic while underway. In the past these sensors were subjected to arduous road tests. The new ...

Two-armed 3-D printing

Twin robotic arms work together as part of a project to construct what will be the largest, most complex object ever 3-D printed in titanium: a test version of the 3-m diameter 'optic bench' at the heart of ESA's Athena X-ray ...

New cellulose-based material represents three sensors in one

Cellulose soaked in a carefully designed polymer mixture acts as a sensor to measure pressure, temperature and humidity at the same time. The measurements are completely independent of each other. The ability to measure pressure, ...

Too many airplane systems rely on too few sensors

The apparent connection between fatal airplane crashes in Indonesia and Ethiopia centers around the failure of a single sensor. I know what that's like: A few years ago, while I was flying a Cessna 182-RG from Albany, New ...

Tiny sensors, big potential

The electrical energy from batteries powers not only the ignition system that turns the engine and moves electric vehicles but also powers almost every sensing feature of today's automobiles. Electricity turns on the car ...

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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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