Materials Literature
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Influence of loading history on the mechanical properties for polyethylene (PE) was examined through an experimental study, in which each specimen was subjected to two short‐term tensile tests that were conducted at least 1 month apart. The first test was to apply various loading histories to specimens, and the second…
Abstract β-NaYF4:Yb,Er upconversion nanocrystals are synthesized by a hot-injection method employing purified α-NaYF4:Yb,Er particles with a size of approximately 2–3 nm as single-source precursor. The method allows to prepare either spherical nanoparticles with different sizes or nanorods by simply controlling the ad…
Syntheses of anisotropic nanostructures of silver have been demonstrated by using a simple chemical synthesis route and the roles of temperature and reaction time in the anisotropic growth of the material have been reported. The role of multiple twinned particles in the anisotropic shape evolution and branching growth…
Electric field activated charge transport is studied in the metal/polymer/metal device structure of electropolymerized polypyrrole down to 10 K with varying carrier density and disorder. Disorder induced nonlinear behaviour is observed in polypyrrole devices grown at room temperature which is correlated to delocalizat…
The ring-banded spherulite is a special morphology of polymer crystals and has attracted considerable attention over recent decades. In this study, a new phase field model with polymer characteristics is established to investigate the emergence and formation mechanism of the ring-banded spherulites of crystalline poly…
Break-down of chemically synthesized ZnO nanorods into small quasi-spherical ZnO NPs possibly due to the proteins secreted by Saccharomyces cerevisiae .
A study on indigenous diatoms was carried out at 49 sites from November 2008 to December 2012 in the marine and brackish plankton and benthic ecosystem in Korea. The structure of small-sized pennate diatoms was examined by means of light and scanning electron microscopy. Twenty species of diatoms were newly identified…
Boron nitride (BN) nanosheet-assembled microwires were successfully synthesized on the large scale and with high purity via an efficient method.
A cyclic octapyrrole shows a strong chiroptical response upon complexation with an oligonucleotide that has high thymine content.
Abstract We investigated an appropriate preparation condition for anode‐supported SOFCs: (La,Sr)MnO3/cathode functional layer/YSZ/Ni‐YSZ were fabricated with and without a Ni‐YSZ anode functional layer (AFL) via the tape‐casting method, where the AFL thicknesses were controlled from approximately 20 to 80 μm. The warp…
In this work, nanocomposites with simultaneous dispersion of multiwalled carbon nanotubes (MWCNT) and montmorillonite clays in an epoxy matrix were prepared by in situ polymerization. A high energy sonication was employed as the dispersion method, without the aid of solvents in the process. The simultaneous dispersion…
In this work, excellent improvement in mechanical properties was observed by incorporating graphene nanofillers in polyvinyl chloride via solution blending. About 63% increase in modulus and 19% increase in ultimate tensile strength were measured at 1.5 wt% nanofiller content while almost no drop in elongation at brea…
Commercial grade polyethylene is melt electrospun from a thin film of unconfined molten polymer on a heated, electrically-grounded plate.Under the influence of an applied electric field, the melt spontaneously forms fingering perturbations at the plate edge which then evolve into emitting fiber-forming jets.Jet-to-jet…
The CoMgO and CoMnMgO catalysts are prepared by a co-precipitation method and used as the catalysts for the synthesis of carbon nanotubes (CNTs) through the catalytic chemical vapor deposition (CCVD). The effects of Mn addition on the carbon yield and structure are investigated. The catalysts are characterized by temp…
Conventional material models cannot describe material behaviors precisely in micro/mesoscale due to the size/scale effects. In micro/mesoscale forming process, the reaction force, localized stress concentration, and formability are not only dependent on the strain distribution and strain path but also on the strain gr…
We have proposed a novel rotary microdevice in which multiplex anisotropic Au NPs could be synthesized under diverse conditions in a high-throughput manner.
In this article, using energy method, the effect of surface stress on the free vibration and bending analysis of single-layer graphene sheet embedded in an elastic medium based on nonlocal elasticity theory is studied. Surface stress plays a more important role due to the high surface-to-volume ratio in nanoscale mate…
A novel SVS technique is used to prepare cathode WO 3 nanowire arrays with excellent emission properties on a glass substrate.
A method is described for using plate lids to reduce evaporation in low-volume vapor-diffusion crystallization experiments. The plate lids contain apertures through which the protein and precipitants were added to different crystallization microplates (the reservoir was filled before fitting the lids). Plate lids were…
One of the major obstacles to successful paclitaxel (PTX) chemotherapy is toxic side effects, which are often due to the conventional surfactants used, such as Cremophor EL. PTX is characterized by its hydrophobicity and insolubility, which limit its application in ovarian cancer therapy. The aim of this study was to…