Kim Chaek University of Technology boasts many researchers who have distinguished themselves in the efforts to help boost the economy and develop science and technology.
Among them is Ryu Chang Hon, a young researcher at the high-tech industry department of the Mirae Sci-Tech Centre. He has invented a plasma air sterilizer and presented several other technical innovation plans conducive to developing the national economy, thus earning respect from his colleagues.
It was about two years after he was assigned to the department following the graduation from the postgraduate course at the university. One day he dropped in at a livestock farm on a business trip.
As he stepped into the workplace, he felt that a disgusting smell of animal excrement failed to be removed completely.
He decided to work on the problem. As he studied many references and other books, he came to a conclusion that corona discharge plasma would be a key to the problem.
With the help of colleagues, he finally succeeded in developing a plasma air sterilizer.
The sterilizer makes it possible for foodstuff and pharmaceutical factories, shops, restaurants and other service facilities to sterilize indoor air effectively and remove the odour at livestock farms.
It is winning popularity among customers for its low energy consumption.
Ryu went on to develop a plasma activated water producer and a 3D printer. In January this year, he was awarded a national patent by inventing an automatic headlight controller which switches on low and high beam alternately at night and informs drivers of on and off state.
Sim Chol Yong
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