We e have studied the O2 dissociation barriers and O atoms adsorption energies of Ih M@Pd12, DI M2@Pd17, NW M4@Pd20 (M=Mn, Fe, Co, Ni, Cu, Pd) and show that the good ORR activity of NW M4@Pd20 (M=Mn,
Two dimensional layered materials have received great attentions since the first experimental discovery of graphene in 2004.The electronic structures of two dimensional materials are strongly dependen
Quantum coherent oscillations in a quantum two-level system (qubit) stand for the most basic dynamic manifestation of quantum coherence between the qubit states.Motivated by potential applications to
A gradient composite coating on the surface of titanium materials,which are used in dental implants,is prepared using an electric-chemical method.The physical properties of the composite coating and i