The prestigious journal, "Physical Review Letters", one of the most important in the field of physics, has published three articles that summarise the findings of the team. The last of these articles may be consulted in the new issue of the journal - number 98. The thorough control and knowledge of the properties boron nitride opens the door to the design of new materials based on this compound and, likewise, has implications in other fields such as biology.
Boron nitride (BN) is a binary compound of the element boron which consists of equal proportions of boron and nitrogen and is used for coatings in reactors and insulation materials. At a nano level, according to what Ángel Rubio’s group has been able to characterise, the compound has excellent electronic and mechanical properties such as high resistance, and can emit blue light, i.e. a wavelength shorter than red, thus augmenting storage capacity in applications for optoelectronic devices such as DVD, aerials and lasers. Moreover, it forms macroscopic structures (nanostructured molecular solids) through weak, van der Waals-type interactions, which, fundamentally, are in other fields of knowledge, particularly biology and supramolecular chemistry, where molecular self-assembly is dictated by these type of interactions.
The UPV/EHU team has shown, on the one hand, the role played by these weak (van der Waals-type) interactions in the stability of these BN nanostructures  and, on the other, the properties of absorption and emission of blue light and near ultraviolet , properties that are also the subject of this latest research . The results are also relevant in the understanding of the properties of other carbon compounds (nanotubes, graphene) in fields such as nanoelectronics, photonics and materials for biomedical applications (sensors, biological labels, etc). All these fields are of great current scientific interest throughout the world and great advances are expected in the short and medium term.
Collaborating on this research with Ángel Rubio, who recently received the DuPont Science Award for his notable theoretical contributions to in the field of nanoscience and molecular nanotechnology, were doctors Ludger Wirtz, Andrea Marini, Jorge Serrano and Pablo García, as well as experimental teams from Japan and Grenoble. First-Principle Description of Correlation Effects in Layered Materials, A. Marini, P. García-González and A. Rubio, Physical Review Letters 96, 136404 - 4 (2006)
 Vibrational properties of Hexagonal Boron Nitride: Inelastic X-ray Scattering and ab initio Calculations, J. Serrano, A. Bosak, R. Arenal, M. Krisch, K. Watanabe, T. Taniguchi, H. Kanda, A. Rubio and L. Wirtz, Physical Review Letters 98, 095503 - 1,4 (2007)
Irati Kortabitarte | alfa
From rocks in Colorado, evidence of a 'chaotic solar system'
23.02.2017 | University of Wisconsin-Madison
Prediction: More gas-giants will be found orbiting Sun-like stars
22.02.2017 | Carnegie Institution for Science
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Life Sciences
24.02.2017 | Life Sciences
24.02.2017 | Trade Fair News