Scientists of the UGR have managed, by means of a numerical technique known as Transmission Line Matrix (TLM) Modelling method, to hide an object or make it invisible in a certain frequency, inside an electromagnetic simulator. Such studies are the germ to achieve invisibility to radars and even to the human eye.
This relevant scientific work has been carried out in collaboration with researchers of the Massachusetts Institute of Technology, and has been recently published in two papers in the prestigious journal Optics Express, the journal with a higher impact index of the Optics group in the Journal Citation Reports. This research work is part of the doctoral thesis carried out by Cedric Blanchard, another researcher of the UGR who is finishing off his education in the United States.
According to the scientists of the University of Granada, the growing interest for electromagnetic invisibility has been partly driven, in the last years, by the existence of powerful computer resources that allow to carry out specific numerical studies of such phenomenon, avoiding the use of commercial software unadjusted to the new research works.
A new technique
This research work has developed a new condensed TLM node to model meta-materials and has managed to make invisible certain objects in conditions difficultly reachable when using commercial software.
The researchers have proposed a TLM simulation of hiding structures, composed of alternating isotropic layers, imitating an anisotropic frame. They had previously implemented a new technique to simulate meta-materials with the TLM method.
"This new prospect -the authors of the project say- leaves the usual TLM process virtually untouched; specifically, the delivery matrix is exactly the same used in classic environments, which provides a lot of flexibility when it comes to program". This way, this research has proved that it is possible to improve the effectiveness of hiding if the electromagnetic parameters of the frame are judiciously chosen.Reference:
Antonio Marín Ruiz | alfa
SwRI-led team discovers lull in Mars' giant impact history
26.04.2017 | Southwest Research Institute
New survey hints at exotic origin for the Cold Spot
26.04.2017 | Royal Astronomical Society
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
26.04.2017 | Materials Sciences
26.04.2017 | Agricultural and Forestry Science
26.04.2017 | Physics and Astronomy