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Milk clothes

05.01.2001

If natural fibers such as silk and wool are made of protein, can not artificial fibers be made from other proteins, such as milk proteins?

The idea arose half a century ago, but the milk fiber produced then smelled of well-aged cheese, which excluded its use in clothing. Now in France and Italy a method has been developed for obtaining tissues from milk that are completely odorless.

These fabrics are lighter than silk and tend to wrinkle less. True, milk clothes will be very expensive: to get a gram of fiber, you need to process two liters of milk.

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Adaptive Walking Exosuit 18.11.2021

Researchers at the Harvard School of Engineering and Applied Sciences. John A. Paulson (SEAS, USA) has developed a new robotic exosuit that can adapt to a specific person and adapt to various walking tasks. The bioinspired system uses ultrasound measurements of muscle dynamics.

People rarely walk at a constant speed and on a perfectly level surface. We accelerate when we rush to the next meeting, when we respond to a signal for a pedestrian crossing. Or we slow down when we go for a walk in the park. The surface and its angle of inclination is also constantly changing, whether we are hiking or climbing a ramp into a building. In addition, the way we walk is influenced by our physiological characteristics: gender, height, age and muscle strength, and sometimes by neurological or muscular disorders such as stroke or Parkinson's disease.

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The new system took only a few seconds of walking - or even just one step - to capture the profile of the muscles. Then, for each ultrasound-generated profile, the researchers measured how much metabolic energy the person used while walking with and without the exosuit. It turned out that the exosuit significantly reduces metabolic energy when walking at different speeds and on different surfaces.

When tested in real conditions, the exosuit was able to quickly adapt to changes in walking speed and surface slope.

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