Identification of Coexisting Graphene Structures on Ni(111)

CVD growth on nickel is considered one of the most interesting routes for graphene large-scale production. Although the atomic structure of graphene on Ni(111) has been thoroughly investigated, and several possible configurations proposed, their stability and ordering in energy are still under debate. Moreover, a direct microscopic experimental evidence for the coexistence of all proposed structures, and an atomic level description of their transition regions are still missing.

Trimethyltin Mediated Covalent Gold-Carbon Bond Formation



Spectroscopic evidence of C-Au bond formation, responsible for the “electron gateway” state, is shown in the process of TrimethylTin break-up on gold.

A.Batra et al., J. Am. Chem. Soc., 2014, 136 (36), pp 12556–12559

Control of spin-wave transmission by a programmable domain wall

Active manipulation of spin waves is essential for the development of magnon-based technologies. Here, we demonstrate programmable spin-wave filtering by resetting the spin structure of pinned 90° Néel domain walls in a continuous CoFeB film with abrupt rotations of uniaxial magnetic anisotropy. Using micro-focused Brillouin light scattering and micromagnetic simulations, we show that broad 90° head-to-head or tail-to-tail magnetic domain walls are transparent to spin waves over a broad frequency range.

A biophysical method to study DNA nanosequences for antitumor therapy

The G-quadruplex structural motif of DNA came to be known as a new and stimulating target for anticancer drug discovery. The human telomeric G-quadruplex consists of guanine-rich single strand repeats, which can fold into higher-order DNA structures. Small molecules that interact with the G-quadruplex structures in a selective way may serve as potential therapeutic agents, and have gained impressive interest in recent years.