Proton transfer (PT) and methyl group transfer (MGT) occurring in small biomimetic systems, Formamide-Formamidic acid (FA-FI), and N-formyl-N-methylformamide-(E)-methyl N-formylformimidate (NMFA-NMFI) are investigated in the gas phase and in single-walled carbon nanotubes by using the density functional theory and the ONIOM approach. It is shown that PT reaction is disfavoured in single-walled ...

In this paper, a novel design of all-solid photonic bandgap fiber with ultra-low confinement loss is proposed. The confinement loss is reduced remarkably by managing the number of rods rings, up-doping level, pitch value, and rods diameters. Moreover, the designed PCF shows ultra-flattened dispersion in L- and U-band. Furthermore, a new design, based on introducing of an extra ring of air h...

There has recently been growing interest in making a sustainable and durable fiber reinforced cementitious matrix (FRCM) to improve the seismic performance of RC column members. However, most studies evaluating lateral confinement effect on FRCM jacketing concrete have excluded transverse steel reinforcement focused solely mechanical properties. This paper, based existing studies, proposes peak...

Strong transverse confinement of high-frequency sound and low-loss routing in on-chip waveguides will bring new degrees freedom to manipulate GHz frequency acoustic waves, analogous the change brought forth by silicon integrated photonics manipulation light on a chip. Here, we demonstrate that high (>3 GHz) can be efficiently guided ?m-scale gallium nitride (GaN) ring resonators exploiting s...

Self Compacting Concrete offers many advantages over conventional concrete. It is mainly used when a great fluidity is required (For example sections with high percentage of reinforcement). Self Compacting Concrete has excellent applicability for elements with complicated shapes and congested reinforcement. An experimental study was made on cylinders and specimens with square sections confined ...

Bias-induced light emission and thermal radiation from conducting channels of carbon nanotubes (CNTs) with defects are studied theoretically within the framework nonequilibrium Green's function method based on a tight-binding model. Localized states induced by single vacancy defect Stone-Wales in low energy range enhance electroluminescence significantly while they reduce under zero bias. The i...