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Chemists from the Massachussets Institute of Technology (MIT) are working on wireless and inexpensive sensors that determine the decomposition of the gases emitted by food that has already deteriorated. Thanks to the technology they have recently developed, a warning is coming to your smartphone for fruits and vegetables that are about to be broken down in your refrigerator. So you can get information about the foods that are going to be in your refrigerator. Ger├žekten The most beautiful feature of these sensors is that they are really cheap. Just place them and read the warnings from. Also no cables, no power supply. How you want to use this technology depends entirely on your imagination, iniz says Chemistry Professor Timothy Swager of MIT. Swager has been developing gas detectors for a long time.

In 2007, he was honored with a prestigious Lemelson-MIT Award of $ 500,000, where he developed elevated chemical sensors capable of detecting gas vapors in TNT and similar explosives. In 2012, it produced ethylene sensors measuring the phenomenon of fruits. Thus, a technology that protects fresh products and reduces waste has been developed. Newly developed sensors have been modified to NFC (near-field communication) tags. The team replaced the electronic circuit on the label with carbon nanotubes that could detect specific gases. Placing the nanotube on the normal pen tip, the label is drawn with this specific item. These sensors can be operated with little power due to short pulses from the magnetic field emitted by mobile phones. Normally, these pulses produce electrical current by induction in the circuit of the label. The frequency changes when the carbon nanotubes are adjusted to the frequencies of specific gases in modified labels. The sensor answers only the designated smartphone and sends a signal for the presence of gas. Currently, each sensor can detect only one gas and keep it 5 cm away from the smartphone. The odors of gases such as ammonia, hydrogen peroxide and cyclohexane were successfully tested. Because very little energy is required to detect a food that has been decayed, it is possible to detect poisonous gases that create a bomb or pollution. Peres and color-coded smart tags can inform you about spoiled food, but not as sensitive as the technology developed by MIT. Researchers have registered the patent of technology and are investigating their potential applications. In addition, researchers want to increase the distance of 5 cm by integrating Bluetooth technology into the system.

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