The hottest print sensor will monitor the health s

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The printed sensor will eliminate faults in real time and monitor the health status of automobile tires

scientists have invented a cheap printed sensor, which can monitor automobile tires in real time. When the tire rubber becomes thin and needs to be replaced, a total of 360000 experiments are required. The sensor will send an alarm to the driver. The device will improve the safety of vehicles, improve vehicle performance and reduce fuel consumption

researchers at Duke University in the United States used metal carbon nanotubes to build this new sensor - a tiny cylinder with a carbon atom diameter of only one billionth of a meter, which can track the change of tread depth in millimeters with 99% accuracy

Franklin, an associate professor at Duke University, pointed out that in today's automotive sensors and detection technology, almost no data is collected from the only part of the vehicle that really touches the road. This technology relies on the mechanical principle of the interaction between electric field and metal conductor. The core of the sensor is to place two small and very close conductive electrodes represented by kn, apply a voltage to the other electrode, and form an electric field between the electrodes

according to the width of the product, many sensors are set to cover the tire, so as to detect the uneven and wear information of the tire. Although the sensor can be made of various materials and methods, researchers hope to optimize the performance by exploring different variables from the size and structure of the sensor to the substrate and ink materials

finally, it was found that printing metal carbon nanotube electrodes on flexible polyimide film could obtain the best effect. In addition to providing the best results, metal carbon nanotubes also have the advantages of durability and resistance to the harsh environment of tires

these sensors can be printed on most objects with aerosol spray, even inside tires. Although it is still uncertain that direct printing is the best manufacturing method to show that the material is a homogeneous core material detection method provided according to the new national standard issued by the state, no matter which method is ultimately adopted, Franklin said that once they are mass produced, the cost of sensors will be far less than every penny

Duke University also hopes to explore printed sensors for other automotive applications, such as labels to maintain brake pad thickness or tire pressure

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