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digital weeding

04.11.2003

To combat weeds, scientists from the University of Bonn (Germany) have created an agricultural sprayer, which itself selects the right remedy against each weed. Until now, a mixture of herbicides is used to destroy harmful plants, each of which "takes" only a part of the weed species.

The result is an overexpenditure of pesticides, excess poisoning of the crop and the environment. The smart sprayer is equipped with three digital cameras that transmit images to two computers. The first sifts out everything in the picture, except for plants, the second compares the images of plants with the bank of information on weeds embedded in it, determines the appropriate herbicide for each, and remembers at what point in the field this weed was found. During the second pass, using the map compiled in this way, the computer gives each weed an individual dose of a lethal herbicide for it.

In the future, the authors of the development say, they intend to combine both stages of the process in one pass across the field.

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Breakthrough in the efficiency of organic semiconductors 19.01.2019

Swedish researchers at Chalmers University of Technology have succeeded in doubling the efficiency of organic semiconductors at once, paving the way for wearable electronics and more efficient solar panels. Thanks to the new approach, many of the technologies based on organic semiconductors will finally become commercially viable.

The development of organic semiconductors has accelerated significantly in recent decades. One example of the application of this technology is the OLED displays of modern smartphones. However, the efficiency of organic semiconductors is still low. The reason is the imperfection of doping - the addition of impurities in order to increase electrical conductivity.

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The new polymer will be especially useful in the production of LEDs and solar cells. In addition, non-toxicity and biocompatibility will make S-PPV an ideal candidate for medical use.

Flexible devices will become one of the main trends in the development of electronics in 2019. In addition, wireless chargers, 5G communications and smart headphones will become widespread.

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