Objectif "Control of matter via light has always fascinated humankind; not surprisingly, laser patterning of materials is as old as the history of the laser. However, this approach has suffered to date from a stubborn lack of long-range order. We have recently discovered a method for regulating self-organised formation of metal-oxide nanostructures at high speed via non-local feedback, thereby achieving unprecedented levels of uniformity over indefinitely large areas by simply scanning the laser beam over the surface.Here, we propose to develop hitherto unimaginable levels of control over matter through laser light. The total optical field at any point is determined by the incident laser field and scattered light from the surrounding surface, in a mathematical form similar to that of a hologram. Thus, it is only logical to control the self-organised pattern through the laser field using, e.g. a spatial light modulator. A simple wavefront tilt should change the periodicity of the nanostructures, but much more exciting possibilities include creation of patterns without translational symmetry, i.e. quasicrystals, or patterns evolving non-trivially under scanning, akin to cellular automata. Our initial results were obtained in ambient atmosphere, where oxygen is the dominant reactant, forming oxides. We further propose to control the chemistry by using a plasma jet to sputter a chosen reactive species onto the surface, which is activated by the laser. While we will focus on the basic mechanisms with atomic nitrogen as test reactant to generate compounds such as TiN and SiN, in principle, this approach paves the way to synthesis of an endless list of materials.By bringing these ideas together, the foundations of revolutionary advances, straddling the boundaries of science fiction, can be laid: laser-controlled self-assembly of plethora of 2D patterns, crystals, and quasicrystals alike, eventually assembled layer by layer into the third dimension -- a 3D material synthesiser." Champ scientifique humanitieshistory and archaeologyhistorynatural scienceschemical sciencesinorganic chemistrypost-transition metalshumanitieslanguages and literatureliterature studiesliterary genresessaysscience fictionnatural sciencesphysical sciencesopticslaser physics Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-CG-2013-PE2 - ERC Consolidator Grant - Fundamental Constituents of Matter Appel à propositions ERC-2013-CoG Voir d’autres projets de cet appel Régime de financement ERC-CG - ERC Consolidator Grants Institution d’accueil BILKENT UNIVERSITESI VAKIF Contribution de l’UE € 1 999 920,00 Adresse ESKISEHIR YOLU 8 KM 06800 Bilkent Ankara Turquie Voir sur la carte Région Batı Anadolu Ankara Ankara Type d’activité Higher or Secondary Education Establishments Contact administratif Abdullah Atalar (Prof.) Chercheur principal Fatih ömer İlday (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire BILKENT UNIVERSITESI VAKIF Turquie Contribution de l’UE € 1 999 920,00 Adresse ESKISEHIR YOLU 8 KM 06800 Bilkent Ankara Voir sur la carte Région Batı Anadolu Ankara Ankara Type d’activité Higher or Secondary Education Establishments Contact administratif Abdullah Atalar (Prof.) Chercheur principal Fatih ömer İlday (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
