Russian researchers, specialists of the Institute of Problems of Chemical Physics, Russian Academy of Sciences, suggest the way to make motor-car airbags even more secure. Their theoretical and practical investigations allowed to determine which the compounds should be included in the powder that burns at the moment of blow during the accident so that the airbags were instantly filled up with gases not dangerous to human beings and environment. The researchers’ effort was supported by the International Science and Technology Center.
"Despite the fact that motorcars of established companies have long ago been equipped with airbags, gas generating compositions in them are still far from perfect", says David Lempert, Ph.D. (Chemistry), one of the development authors. The problem is that the requirements to these compositions are rather firm, multiple and sometimes difficult to combine.
Evidently, the airbag powder should burn down instantly, i.e. within 50-60 milliseconds. Along with that, sufficient volume of gases should be formed to fill in the airbag and to protect a person from a blow. At the point of accident, the powder should instantly ignite and burn down at the predetermined combustion rate, i.e. this should be absolutely safe for the car and the passengers, and during all the rest of the time it should preserve exceptional stability – during the 10 to 15-year shelf life, in rainy, frosty and hot weather at the temperature of up to + 110 degrees C it should remain invariably ready, but be insensitive to shaking, friction and blows. Besides, it is necessary that the compositions burned down producing no smoke and detrimental products, such as nitric oxide and carbon monoxide, and making minimal amount of steam.
Sergey Komarov | alfa
Did you know how many parts of your car require infrared heat?
23.10.2017 | Heraeus Noblelight GmbH
Two intelligent vehicles are better than one
04.10.2017 | Ecole Polytechnique Fédérale de Lausanne
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...
08.12.2017 | Event News
07.12.2017 | Event News
05.12.2017 | Event News
11.12.2017 | Physics and Astronomy
11.12.2017 | Materials Sciences
11.12.2017 | Earth Sciences