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Video club for Japanese pensioners

07.02.2022

In Japan, there is a special gaming club designed exclusively for pensioners. The goal of the initiative is to bring older people together through video games and help them avoid loneliness, especially during a pandemic.

The ISR eSports Center in Kobe is very popular.

According to club owner Koji Nashimoto, the space is designed to help people find meaning in life after retirement, avoid isolation and give them a sense of community.

Anyone over the age of 60 can come to the ISR center. Registration in the club is free, and the game sessions themselves last 90 minutes. After that, older gamers can chat with each other and drink tea or coffee during a 30-minute break.

The staff at the ISR Center provide each pensioner with a basic instruction for a particular game. At the same time, they try not to give gamers too difficult titles or try to teach them a lot of tricks.

Many of the club's visitors felt lonely and isolated from the outside world after the lockdowns. However, video games helped them to reconnect with other people.

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Super thin battery material 07.10.2021

American scientists have developed an ultra-thin material that will allow the creation of innovative batteries and other energy conversion devices.

Northwestern University professor Mercurios Kanadzidis, in collaboration with researchers at the Argonne National Laboratory, was looking for a superconductor with unusual properties and unexpectedly created another supermaterial of silver, potassium and selenium (a-KAg3Se2). Its structure consists of 4 layers, and the thickness is only 4 atoms, which allows for the first time to study the motion of charged particles in two-dimensional space.

With the help of superionic conductors, charged ions move in a solid material as freely as they do in liquid electrolytes contained in batteries. Such material easily conducts electricity, but conducts heat poorly, which means it almost does not heat up. Both of these properties make superionic conductors supermaterials for energy storage and conversion devices.

Scientists concluded about the special properties of the material after they heated it to 232 and 315 degrees Celsius. They noticed a shift to a more symmetrical four-layer structure. As it turned out, the process is reversible - it is enough to lower and raise the temperature again. After the transition, the silver ions began to wiggle just as if they were inside a highly salty aqueous electrolyte - one of the fastest ionic conductors known at the moment.

Even if the material, called a-KAg3Se2, cannot be used to make batteries, it will be useful for studying the behavior of ions and creating other 2D materials with high ionic conductivity and low thermal conductivity.

Research on the superionic material could be useful for developing new thermoelectrics that convert heat into electricity in power plants and even from car exhaust. The developments are also proposed to be used to create purification membranes for filters and water desalination.

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