0000000000634466
AUTHOR
Ru-wen Peng
Dynamic behaviors of fractal-like domains in monolayers
In this paper we report our recent investigations on the morphological evolution of fractal-like domains of the liquid-condensed (LC) phase in lipid monolayers. It is demonstrated that the dimension of the LC domains increases upon continuous illumination of microscope light. The experimental data indicate that the increasing rate of fractal dimension of the LC domains depends on the concentration of fluorescence probes. By analyzing the domain growth process we find that the self-similarity of the pattern disappears gradually during its growth. The possible mechanism behind the observed phenomena is discussed.
Illumination-related pattern formations in lipid monolayers
We report on the phenomenon that in the two phase coexistence region (LC-LE) of a lipid monolayer film the fractal-like solid domains may grow simply by continuous illumination of a fluorescence microscope. The mechanism of this 2D domain growth is discussed. This phenomenon gives insight into the two-dimensional ramified crystallization in monolayers.
Two prospective Li-based half-Heusler alloys for spintronic applications based on structural stability and spin–orbit effect
To search for half-metallic materials for spintronic applications, instead of using an expensive trial-and-error experimental scheme, it is more efficient to use first-principles calculations to design materials first, and then grow them. In particular, using a priori information of the structural stability and the effect of the spin–orbit interaction (SOI) enables experimentalists to focus on favorable properties that make growing half-metals easier. We suggest that using acoustic phonon spectra is the best way to address the stability of promising half-metallic materials. Additionally, by carrying out accurate first-principles calculations, we propose two criteria for neglecting the SOI s…
A half-metallic half-Heusler alloy having the largest atomic-like magnetic moment at optimized lattice constant
For half-Heusler alloys, the general formula is XYZ, where X can be a transition or alkali metal element, Y is another transition metal element, typically Mn or Cr, and Z is a group IV element or a pnicitide. The atomic arrangements within a unit-cell show three configurations. Before this study, most of the predictions of half-metallic properties of half-Heusler alloys at the lattice constants differing from their optimized lattice constant. Based on the electropositivity of X and electronegativity of Z for half-Heusler alloys, we found that one of the configurations of LiCrS exhibits half-metallic properties at its optimized lattice constant of 5.803Å, and has the maximum atomic-like magn…