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Mechanical engineers at Pennsylvania State University have created a fluid membrane that allows large objects to pass through and traps small objects. The material is self-regenerating, stabilized, has many properties of the cell membrane and is the complete opposite of a conventional filter..
The simplest example of a filter is a sieve. If sugar and peas are poured into it, then it detains larger objects. The invention of the Pennsylvania scientists works the other way around. The principle of operation of a liquid membrane is based on kinetic energy, which is usually proportional to size, to achieve the desired reversing effect. After passing the object, the shape is completely restored like a layer of surface tension on the top of the glass.
The liquid membrane looks like a regular bubble blowing ring. It is based on water and many other components, and the first prototypes consisted partially of soap. In the course of further research, the content was greatly changed. Thanks to this, the membrane has now become stronger, and also received antibacterial properties and the ability to neutralize odors. Now it can function for a long time and even blocks certain gases..
The team believes the invention can be used in a surgical procedure to protect against infection. This is especially important in areas of natural disaster or in war zones, where there may not be special facilities for operations..
French scientists have also made breakthroughs in the field of medicine. They learned to detect cancer in five years before its active phase.
text: Ivan Malichenko, photo and video: Penn State University