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Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

A polymer that responds to mechanical stress like a muscle 12.02.2021

Scientists have created segmented polyurethane elastomers with mechanochromic and self-reinforcing features. The development is useful for intuitive damage detection and the creation of adaptive materials.

An important ability of such a biological tissue as muscles is self-healing and self-reinforcing. It occurs in response to damage caused by external forces. Most artificial polymers break down irreversibly when subjected to sufficient mechanical stress. This makes them less useful for, for example, the production of artificial organs. But what if you could create polymers that react chemically to mechanical stress and use that energy to improve their properties?

A team of scientists from Tokyo Institute of Technology, Yamagata University and Sagami Institute of Chemical Research, Japan, has made significant progress in the field of bulk self-reinforcing substances. Their new polymer reacts to mechanical stress almost like a muscle.

Segmented polyurethanes (SPUs) containing difluorenylsuccinonitrile (DFSN) fragments and methacryloyl groups have been synthesized. The resulting elastomers formed pink cyanofluorene radicals and changed color when compressed or stretched. This is the first example of crosslinking reactions under force, achieved only by stretching or compressing the bulk film. Credit: Tokyo Tech

The team created segmented polyurethane polymer chains with hard and soft functional segments. The soft segments contain DFSN molecules acting as their "weakest link", with both halves connected by a single covalent bond. The side chains of the soft segments end in methacryloyl units. When the polymer is subjected to mechanical stress, such as simple compression or stretching, the DFSN molecule splits into two equal cyanofluorene (CF) radicals. These CF radicals, unlike DFSN, turn pink, making it easy to visually detect damage.

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