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DateDate: 31-05-2018, 07:04

It can stretch almost six times. Now developers of portable electronics are engaged in the creation of prototypes of wearable devices that are made of such soft materials. They will be very good in daily use, for example, in clothes, and will also be protected from damage.
Swiss engineers have created an optical fiber, which is also conductive, as well as similar fibers with electrodes made of liquid alloys and carbon. Now, based on the invention, the first devices are created. So far, similar technologies, although not very developed, are used very rarely, but scientists continue their work.
The authors of the work were specialists from the Federal Polytechnic School of Lausanne. They created methods for composite fibers. It is able to combine at once a couple of materials, and also stretch out as much as six times. For this, the method of thermo-extraction from the preform was used.
The basis of the fiber is a copolymer, which consists of two phases - a hard and soft. By adjusting these properties, it is possible to change the properties of the final material. The optimal ratio allows you to conduct experiments with additional materials.
The authors believe that their fibers can be built into smart clothes or robots. In addition, they have already submitted a prototype of such a soft keyboard.
Source: VistaNews

DateDate: 30-05-2018, 07:01
The operating system Windows 10 is not at all free, as many believe, but a paid product, and extremely expensive. In the case of the price in the US, things are much better, but there the license "Windu" uses hundreds of times more people, thereby allowing Microsoft to stuff its bottomless pockets.
As it became known a few minutes ago, on May 30, 2018, this OS gilded its creators. The American edition of CNBC writes that the market value of Microsoft exceeded the price of Alphabet Holding (it belongs to Google) for as much as $ 10 billion, that is, for a huge amount of money.
Journalists associate this with the operating system Windows 10, which is now the main source of income for the whole corporation. In addition, a big role was played by subscriptions to various services, like Office 365 and OneDrive, for which people pay hundreds of millions of dollars every month for a total. Since the end of May 2017, due to the competent actions of the management, Microsoft shares have jumped in price by as much as 40%, that is, the company began to cost much more in just one year, although it has more than 50-year history. As a result, now the company-maker Windows 10 bypasses Google by capitalization, ranking third. At the first position is Apple, while immediately after it goes Amazon. In the fifth position, immediately after Google, is the Facebook company, and the six of the richest corporations that are present in the US, closes the Chinese Tencent.
Thus, the "search giant" was removed from the third place of the richest IT corporations in the world, than the company's management will definitely remain dissatisfied. If this goes on, then soon Microsoft has every chance to press first Amazon, and then Apple. Taken with akket.com


DateDate: 29-05-2018, 06:54

The gel is similar in structure to muscle tissue due to its softness, 70% water content and the ability to respond to electrical stimulation.
Researchers from the University of Rutgers, New Brunswick, created a material that can be described as "smart gel." Figures from this gel, printed on a special three-dimensional printer, are able to walk independently under water and even move small objects. The appearance of such material can lead to the creation of a new type of soft robots, imitating some marine living creatures, such as squid and octopus, capable of capturing and moving various objects without causing them physical damage. In addition, the new material can become the basis of artificial muscles that activate artificial organs, such as the heart.
"Our clever gel will find a lot of applications, especially in bioengineering, because it is similar in many respects to the tissues of living organisms, like living tissues, it is very soft and contains a lot of water," says Howon Lee, , one of the researchers, "The material can become the basis for new types of underwater devices that will resemble some marine life, such as octopuses, for example."
To produce a clever gel, a special photosensitive solution is used, which under the influence of light turns into a denser substance. After that, objects from the gel are placed in salted water, where two electrodes are also lowered. The combination of salt concentration in water, polarity and strength of the created electric field allows to control the shape and movements of the object from the gel.
Scientists have made elastic photonic and electronic fibers
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In the above video, you can see various options for using a new clever gel, and the most amusing version is an inch figure of a little man who is able to step underwater under the influence of a pulsed electric field.

DateDate: 28-05-2018, 08:00

Researchers have created a new biomaterial, the strength of which exceeds the strength of steel and spider silk.
A group of Swedish researchers who used the X-ray source DESY PETRA III, created a new kind of biomaterial, which is the most durable material of biological nature to date. Strength to this material is provided by the thinnest cellulose fibers, exceeding in their characteristics even spider silk, which until that time was considered the most durable biomaterial in the world.
Cellulose nanofibres (cellulose nanofibres, CNF) are the basic material from which almost all plant origin consists. Using the production method developed by them, the researchers were able to impart the properties of cellulosic nanofibres to a new lightweight material that could become a more environmentally friendly alternative to plastics used in the automotive, furniture, aviation, other industries and medicine.
Scientists have based on commercially available cellulosic nanofibres, whose diameter is from 2 to 5 nanometers, and the length is about 700 nanometers. These nanofibers were stirred in water, which flowed through a thin channel, one millimeter in diameter. The outlet part of this channel passed first through a cavity filled with deionized water, and then through water with a low pH value. Due to some technological tricks, the flow of water with nanofibers accelerated and contracted.
This process was called hydrodynamic focussing, it allowed all the nanofibers to align in the flow in one direction and they were connected in a thick enough thicker fiber, fastened by forces of molecular and supramolecular bonds, such as Van der Waals forces.
Using the X-ray emitted from the PETRA III source, the researchers were able to study all the subtleties and optimize the manufacturing process to the maximum. And as a result of this, the light appeared cellulose thread, a thickness of 15 micrometers and a length of several meters. The tests showed that such a thin thread can withstand a tensile strength of 86 GPa, and its tensile strength is 1.57 GPa.
A nano-hybrid battery, capable of charging in seconds
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In conclusion, we note that these studies open the way to the development of a number of new materials based on cellulosic nanofibres that can be used even for the manufacture of large structures due to their high strength. And the modernization of the new technological process, as the scientists hope, will allow producing yarns not from cellulose, but from carbon nanotubes and other nanomaterials. Such threads will be incredibly durable and when they are born, one can start thinking about the practical implementation of such a fantastic idea as a space orbiting elevator.


DateDate: 28-05-2018, 07:59