Materials Literature
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Abstract One-dimensional MgAl–CO3 layered double hydroxide (LDH) nanobelts were synthesized by a hydrothermal method in an aqueous solution system without templates. The study showed that the reaction time, reaction temperature, and aging process were the key factors for obtaining LDH nanobelts. Hydrothermal reaction…
We present our findings of the selective adsorption of native and denatured proteins onto thermally responsive, native-protein resistant poly(N-isopropylacrylamide) (PNIPAAm) decorated silicon nanowire arrays (SiNWAs). The PNIPAAm-SiNWAs surface, which shows very low levels of native-protein adsorption, favors the ads…
En este trabajo se verifica el cumplimiento que las tasas de dosis, en los alrededores de una instalación que opera radioisótopos de uso industrial con actividades de hasta 50 Ci. También se verifica si cumple con los requisitos exigidos por los protocolos internacionales para la protección radiológica de trabajadores…
It is known that carbon nanotubes (CNTs) possess multifunctional characteristics, which are applicable for a wide variety of engineering applications. CNT is also recognized as a radiation sensitive material, for example for detecting infrared (IR) radiations. One of the direct implications of exposing CNTs to radiati…
One of the fundamental open questions in condensed matter science is the origin of the unique universal characteristics of glasses. Among them, the Boson peak (BP) and the first sharp diffraction peak (FSDP) are directly related with the disordered nature of these solids. The lack of widely accepted understanding of t…
In this work, we study the nature of transitions between inherent structures of a two-dimensional model supercooled liquid. We demonstrate that these transitions occur predominately along a small number of directions on the energy landscape. Moreover, we show that the number of such directions decreases as the tempera…
Several dendrimer–clay nanocomposites have been prepared. Firstly, the dendrimer (DE1)/clay nanocomposite was obtained via an in situ free radical polymerization of a double bond‐ended dendrimer (DE1), derived from Behera's amine by using 2,2′‐azobisisobutyronitrile (AIBN), as initiator, and Cloisite 30 B, as nanofill…
The synthesis of the dipeptide antibiotic bacilysin involves the sequential action of multiple enzymes in the bac operon. YwfH (also referred to as BacG) catalyzes the stereoselective reduction of dihydro-hydroxyphenylpyruvate (H2HPP) to tetrahydro-hydroxyphenylpyruvate (H4HPP) in this biosynthetic pathway. YwfH is an…
Abstract The isothermal crystallization behavior of α‐cellulose short‐fiber reinforced poly(lactic acid) composites (PLA/α‐cellulose) was examined using a differential scanning calorimeter and a petrographic microscope. Incorporating a natural micro‐sized cellulose filler increased the spherulite growth rate of the PL…
We present results on the low-temperature photoluminescence characterization of individual ZnSe nanowires, whose crystal structure was determined to be zinc-blende by transmission electron microscopy on the same individual nanowires as were studied optically. The photoluminescence response from single ZnSe nanowires w…
Abstract The essential work of fracture (EWF) approach was adopted to reveal the effect of nanofillers on the toughness of poly (ϵ‐caprolactone) (PCL)/boehmite alumina (BA) nanocomposites. Synthetic BA particles with different surface treatments were dispersed into the PCL matrix by extrusion melt compounding. The mor…
Abstract A photoresponsive controlled adsorption system based on a porous coordination polymer (PCP) was fabricated, using azobenzene tethered with poly(ethylene glycol) (PEG-AB) as macromolecular guests. Specific adsorption behavior of trans-PEG-AB into the nanochannels of a PCP was observed in an EtOH medium. When t…
Phase separation of the ultrasoft restricted primitive model (URPM) with gaussian charges is re-investigated in the random phase approximation (RPA)--the "Level A" approximation discussed by Nikoubashman, Hansen, and Kahl [J. Chem. Phys. 137, 094905 (2012)]. We find that the RPA predicts a region of low temperature va…
The incorporation of hydrogen shallow donors gives rise to ${\text{Mn}}^{2+}$ fine and hyperfine lines in the electron paramagnetic resonance of ZnO. This cannot be explained by recharging of isolated Mn atoms. First-principles density functional calculations reveal that transition metals readily form complexes with a…
In protein crystallography experiments, only two critical steps remain manual: the transfer of crystals from their original crystallization drop into the cryoprotection solution followed by flash-cooling. These steps are risky and tedious, requiring a high degree of manual dexterity. These limiting steps are a real bo…
In the Republic of Korea, it is widely thought that the subcooled liquid nitrogen cooling system is the most promising method to develop a high-voltage superconducting apparatus. This method involves injecting a gaseous insulation medium, such as He, Ne, or N2, into the superconducting apparatus to control the system…
The results of heat capacity, thermal dilatation and T-p phase diagram studies on the La0.7Pb0.3MnO3 single crystal are reported. Direct measurements of intensive magnetocaloric effect are performed by means of adiabatic calorimeter. Barocaloric effect is determined using data of heat capacity and susceptibility to hy…
The interaction between the Pt atom and the benzene (Bz) molecule was investigated theoretically, using a symmetric Pt-Bz half-sandwich complex. Various levels of wave function theory (HF, MP2, CCSD(T), CASPT2, multistate (MS) MS-CASPT2) together with several functionals (PBE, PBE+D3, PBE+vdW, PBE/EE+vdW) of the densi…
We theoretically investigate interaction effects in transport phenomena in bilayer graphene (BLG). For the minimal conductivity in pristine BLG, we find that the conductivity assumes a constant interaction-limited value for $T\ensuremath{\rightarrow}0$, with the first correction being $\ensuremath{\propto}\sqrt{T}$. W…
Initial stages of Cu immersion deposition in the presence of hydrofluoric acid on bulk and porous silicon were studied. Cu was found to deposit both on bulk and porous silicon as a layer of nanoparticles which grew according to the Volmer-Weber mechanism. It was revealed that at the initial stages of immersion deposit…