• atoms
  • Recently, the effect of transition metals atoms doping on geometric, electronic, linear and nonlinear optical properties of Mg12O 12 nanocage was investigated and it was shown that the first hyperpolarizability of Mg 12 O 12 nanoclusters significantly enhanced through doping with transition metal atoms [ 23 ]. (tsijournals.com)
  • When hydrogen atoms in linear polysilene are replaced with organic substituents, particularly alkyl and aryl groups, polysilanes are obtained. (wikipedia.org)
  • This effect is often called Peierls instability: starting from a linear chain of equally spaced atoms Peierls considered first order perturbation theory with Bloch wave functions showing the instability, but he did not consider the self-consistency resulting in the transition to alternation of single and double bonds. (wikipedia.org)
  • structural
  • By contrast, in both the polysilicon dihalides and the polysilicon monohalides, as well as the polysilicon hydrides, the silicon atom is tetravalent with a local coordination geometry that is tetrahedral, even though the stoichiometry of the monohalides ([SiX]n = SinXn) might erroneously imply a structural analogy between perhalopolysilynes and [linear] polyacetylenes with the similar formula (C2H2)n. (wikipedia.org)
  • Investigation about the effect of transition metal doping on structural, electronic, energetic, linear and nonlinear optical properties of Be12O12 nanocluster is the subject of this research. (tsijournals.com)