MOESM4 of Complete chloroplast genome sequences of two endangered Phoebe (Lauraceae) species

Additional file 4: Table S4. Genes, separated by category, encoded by P. chekiangensis and P. bourneiplastomes

MOESM1 of Complete chloroplast genome sequences of two endangered Phoebe (Lauraceae) species

Additional file 1: Table S1. Analyses of repeat sequences in the two Phoebe chloroplast genomes

Hanoi Tower-like Multilayered Ultrathin Palladium Nanosheets

This paper describes the synthesis, formation mechanism, and mechanical property of multilayered ultrathin Pd nanosheets. An anisotropic, Hanoi Tower-like assembly of Pd nanosheets was identified by transmission electron microscopy and atomic force microscopy (AFM). These nanosheets may contain ultrathin Pd layers, down to single unit cell thickness. Selected area electron diffraction and scanning transmission electron microscopy data show the interconnected atomically thick layers stacking vertically with rotational mismatches, resulting in unique diffractions and Moiré patterns. Density functional theory (DFT) calculation with van der Waals correction (DFT+vdW) shows the adsorption of Pd₄(CO)₄(OAc)₄ on Pd(110) surface (<i>E</i>_ad = −5.68 eV) is much stronger than that on Pd(100) (<i>E</i>_ad = −4.72 eV) or on Pd(111) (<i>E</i>_ad = −3.80 eV). The adsorption strength of this Pd complex is significantly stronger than that of CO on the same Pd surfaces. The DFT+vdW calculation results suggest a new mechanism for the observed anisotropic growth of nanosheets with unusually high aspect ratio, in which the competitive adsorptions between Pd₄(CO)₄(OAc)₄ complex and CO on various surfaces result in a favored growth along the ⟨110⟩ directions and inhibition along ⟨111⟩ directions. The mechanical property of these multilayered Pd nanosheets was studied using AFM and nanoindentation techniques, which indicate multilayered nanosheets show more plastic deformation than the bulk in response to an applied force