Experts encounter a serious problem when studying the crime scene after an explosion. They can establish to a high degree of probability the type and power of the device used by terrorists and with what explosive substance it was filled with. However, they are usually unable to answer the most important question as to where and when the explosive itself was made: TNT is still TNT, regardless of the where and when it was produced.
Specialists from the Semenov Institute of Chemical Physics and their colleagues from several defense enterprises have developed special encoding additives. If these additives are introduced to the composition of the explosive, the site of the explosion will leave a kind of fingerprint, with which the explosive could be identified and the path of its legal movements could be traced; this would give the investigation into an incident of this kind a thread to uncover the supply channels of the terrorists. This most important work was fulfilled by the researchers in the framework of ISTC Project # 1292.
It is very difficult to make such encoding additives specifically for explosives; the requirements are too strict. On one hand they have to be completely harmless to the product (the explosive) and to the environment in their own right. On the other hand the explosion must not damage the encoding additive. And of course they all have to be individual, to ensure the reliability of the identification process. No dirt or impurities should be able to hinder the recognition of markers or to confuse them.
Olga Myznikova | alfa
Reversing cause and effect is no trouble for quantum computers
20.07.2018 | Centre for Quantum Technologies at the National University of Singapore
Study suggests buried Internet infrastructure at risk as sea levels rise
18.07.2018 | University of Wisconsin-Madison
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences