Hyperbolic paraboloid surfaces or saddle-shaped materials can exist in two equilibrium shapes when the saddle shape reverses on itself and, therefore, be used as structural elements of new stimuli-responsive and shape-changing materials. Here we propose a fast easy approach to nanoarchitectonics graphene oxide nanosheets form curved interfaces. Our technology involves computer-aid design, three...

V. M. Silkin,1,2,3 T. Nagao,4 V. Despoja,2,5 J. P. Echeverry,2,5 S. V. Eremeev,2,6,7 E. V. Chulkov,1,2,5 and P. M. Echenique1,2,5 1Departamento de Fı́sica de Materiales, Facultad de Ciencias Quı́micas, Universidad del Paı́s Vasco, Apdo. 1072, E-20080 San Sebastián/Donostia, Spain 2Donostia International Physics Center (DIPC), P. de Manuel Lardizabal 4, E-20018 San Sebastián/Donostia, Spain 3IKERBA...

The energy market has destabilized with the increased economic development of emerging countries, owing to higher global energy demands and an increase in the cost of fossil fuels[1]. In addition, the seriousness of global environmental issues, such as the emission of greenhouse gases and the frequency of abnormal weather, has grown increasingly severe[2]. To resolve these issues, solar photovo...