16 126 809 livres à l’intérieur 175 langues
2 047 052 livres numériques à l’intérieur 101 langues
Cela ne vous convient pas ? Aucun souci à se faire ! Vous pouvez renvoyer le produit dans les 30 jours
Impossible de faire fausse route avec un bon d’achat. Le destinataire du cadeau peut choisir ce qu'il veut parmi notre sélection.
Politique de retour sous 30 jours
Reflecting the somehow eclectic nature of the author''s interests, this book explores three - if not more - separated topics, at the forefront of their fields. After demonstrating in an experimental magnetic cactus the same phyllotactic patterns that occur in leaves on a stem, spines on a cactus, or scales on a pine cone, Chapter I shows that the dynamics of phyllotaxis generates new physics beyond botany: rotons and a large family of dynamically stable novel topological solitons. This "dynamical phyllotaxis" is likely to be relevant e.g. for conduction in Wigner crystals in cylindrical geometries, energy localization in protein alpha helices, or solitons in DNA. Chapter II reports on the first artificial realization at the nanoscale of spin ice, discusses its relationship with well known vertex models and shows how this athermal system can be described by an effective thermodynamics. Chapter III focuses our attention to carbon nanostructures and introduces a two-field formalism that can fully describe their electromechanical properties at small deformations, and therefore explains and extends a previously disparate accumulation of analytical and computational results.