Materials Literature
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Flow in unsaturated porous media or in engineered microfluidic systems is dominated by capillary and viscous forces. Consequently, flow regimes may differ markedly from conventional flows, reflecting strong interfacial influences on small bodies of flowing liquids. In this work, we visualized liquid transport patterns…
Abstract The influence of melt mixing conditions on the level of dispersion and the aspect ratio of vapor grown carbon nanofibers (VGCNFs) in a polystyrene (PS) matrix was studied. Final electrical and electromagnetic shielding capabilities in the 0.05–1.5 GHz frequency range are reported and discussed in the light of…
The removal of lithium and other group I contaminants from hydrothermally grown ZnO results in significant changes in its electrical, optical, and device characteristics. A significant reduction in donor compensation allows the fabrication of low series resistance Schottky contacts with extremely high rectification ra…
Based on the concepts of artificially microstructured materials, i.e. metamaterials, we present here the first practical realization of a radial wave crystal. This type of device was introduced as a theoretical proposal in the field of acoustics, and can be briefly defined as a structured medium with radial symmetry,…
Alkali‐based barium borosilicate glasses having similar composition to the Trombay nuclear research reactor waste base glass containing iron were prepared and irradiated by gamma rays. The radiation‐induced defect centers were investigated using electron paramagnetic resonance ( EPR ) technique. The results showed the…
This paper addresses the critical issues associated with using conventional bioimplants (stainless steel, cobalt–chromium and titanium alloy), and it emphasises on Mg as a potential material for fabricating load bearing bioimplants (hip, knee, shoulder and elbow). Hydroxyapatite (HAp) is a well established biodegradab…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Hyuck Lim, Weiyi Lu, Yu Qiao; Dependence on cation size of thermally induced capacitive effect of…
The applicability of the computational docking approach was investigated to create a novel method for quick additive screening to inhibit the crystallization taking place in amorphous drugs. Surface energy and attachment energy were utilized to recognize the morphologically most important crystal faces. The surfaces (…
We present a simple method for preparing large quantities of micrometer-sized core–shell silica rods, via needle-like akaganéite (β-FeOOH) template particles. The preparation of the akaganéite needles by aging ferric chloride solutions at elevated temperature is explored in order to find improved conditions for the fo…
Abstract The design and the development of novel scaffold materials for tissue engineering have attracted much interest in recent years. Especially, the prepared nanofibrillar scaffold materials from biocompatible and biodegradable polymers by electrospinning are promising materials to be used in biomedical applicatio…
Highly transparent samarium (Sm3+) doped borophosphate glasses were prepared using the melt-quenching technique. The tunable light emission and wideband near-infrared luminescence properties of Sm3+-doped glasses were investigated systemically. Tuning the Sm3+ concentration and excitation wavelength can generate hues…
Novel block copolymers using the monomers 5-(2-methoxyethyoxymethyl)-5-methyl-[1,3]-dioxa-2-one (TMCM-MOE1OM) as a hydrophilic segment and lactides as a hydrophobic segment were designed in order to prepare controllable degradation polymers by dynamic polymer rearrangement based on the hydrophilicity. When the copolym…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Indranil Lahiri, Joyce Wong, Zilu Zhou, Wonbong Choi; Ultra-high current density carbon nanotube…
Single crystals of 6H–SiC were implanted at room temperature with 4-MeV Au ions to a fluence of 1015 cm−2. Raman spectra showed that full amorphization was achieved. The recrystallization process was studied by micro-Raman spectrometry after isochronal thermal annealing between 700 and 1500°C. The spectra permitted th…
Micrometer-sized, hemispherical particles were successfully prepared as a result of the cleavage of Janus PMMA/PS composite particles by dispersion into acetone/water (9/1-10/0 v/v) media or a THF/water (8/2 v/v) medium. The spherical composite particles having a Janus structure were prepared by the slow evaporation o…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Y. Miao, Q. Yang, L. Chen, R. Sammynaiken, W. J. Zhang; Modelling of piezoresistive response of c…
We investigate the electronic structure and magnetism of semi-Heusler alloys CoCrP and CoCrAs using the full-potential linearized augmented plane wave method. The calculations reveal that CoCrP and CoCrAs are half-metallic (HM) ferromagnets with the same magnetic moment of 2.00 μB per formula unit. Both alloys have la…
There is growing demand for novel methods that could render the controlled disassembly of higher-order structures formed, for example, by peptides. Herein, we demonstrate such a method based on the application of a photocaged variant of the amino acid lysine, namely, lys(Nvoc). Specifically, we introduce lys(Nvoc) int…
With a 980 nm laser diode pumping, the 2.7 µm emission and energy transfer processes of Er3+/Pr3+ codoped germanium-gallium-bismuthate glasses have been investigated. For Er3+ (1 mol. %) and Pr3+ (1 mol. %) molar concentrations, an intense 2.7 µm emission was obtained based on the high excited-state absorption of Er3+…
Using very uniform large-scale chemical vapor deposition grown graphene transferred onto silicon, we were able to identify 15 distinct Raman lines associated with graphene monolayers. This was possible thanks to a combination of different carbon isotopes and different Raman laser energies and extensive averaging witho…