Materials Literature
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ABSTRACT Silk fibroin film (SFF) with excellent mechanical properties was prepared for the first time with Bombyx mori silk fibroin as the material and 1‐butyl‐3‐methyl imidazolium acetate ([Bmim]OAc) ionic liquid (IL) as the solvent. The aim was to understand whether the microstructure of SFF could be modified and wh…
Inorganic-organic hybrid materials were prepared by free radical polymerization of the clusters Zr4O2(methacrylate)12 or Zr4O2(methacrylate)12-x(pivalate)x and 2-hydroxyethyl methacrylate. Increasing either the proportion of Zr4O2(methacrylate)12 or varying the number of methacrylate ligands in Zr4O2(methacrylate)12-x…
Purpose – This paper aims to investigate a novel giant magnetostrictive (GM) force sensor using Terfenol-D rod. Design/methodology/approach – First of all, principle of GM force sensor based on positive magnetostriction of Terfenol-D is presented. Then, design procedure of the GM force sensor is stated. Magnetic prope…
Electrical resistivity measurements on ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sm}}_{x}{\mathrm{O}}_{0.5}{\mathrm{F}}_{0.5}{\mathrm{BiS}}_{2}\phantom{\rule{0.28em}{0ex}}(x\phantom{\rule{0.28em}{0ex}}=\phantom{\rule{0.28em}{0ex}}0.1,\phantom{\rule{0.28em}{0ex}}0.3,\phantom{\rule{0.28em}{0ex}}0.6,\phantom{\rule{0.28em…
The silk gland of Bombyx mori (BmSG) has gained significant attention by dint of superior synthesis and secretion of proteins. However, the application of BmSG bioreactor is still a controversial issue because of low yields of recombinant proteins. Here, a 3057 bp full-length coding sequence of Hpl was designed and tr…
Micro-porous cellulose filters were fabricated from paper mulberry pulp, which has been used for thousands of years with Korean history. 'Han-ji' is the name of a traditional paper used widely in Korea in construction, textile, craftworks and many household items but before now it has not been used for filtration purp…
We demonstrated a new plasmonic nanodevice that spatially sorts photons according to their colors on the nanoscale while maintaining their nanoconcentration. The properties of this nanoscale color sorting based on constructive and destructive interferences between different multipolar plasmon modes are controlled by t…
Zooplankton play a significant role in ecosystem as secondary producer. Climate change will potentially affect the abundance and global composition of zooplankton. This research aimed to study the geographical variation of zooplankton abundance relative to anthropogenic pressure. The research was conducted in April 20…
To prevent SiO2 nanoparticles (SNPs) from aggregation, surface modification of them was performed using bio-safe citric acid (CA) and L(+)-ascorbic acid (vitamin C) for the first time. After that, NC films of well-dispersed modified SiO2(Mod-SiO2) in a poly(vinyl alcohol) (PVA) matrix (PVA/Mod-SiO2) were prepared usin…
A new sulfobutylated phenol formaldehyde resin (BSPF) was prepared for the first time. Cyclic voltammetry and electron spin resonance were used to investigate oxidation process of BSPF, in which stable oxidation state with radical was formed. Inspired by electron transfer during oxidationof BSPF, water soluble PEDOT:B…
A novel design of electromagnetic wave absorber is presented with the characteristics of broad bandwidth, low profile, and polarization independence to a normal incident electromagnetic wave. The absorber is composed of a single-layer, highly resistive frequency selective surface layer printed on a 1-mm-thickness foam…
Three commercial road emulsions on the basis of petroleum bitumens differing by their production method (oxidated, distillation and modified bitumens) and Redicote E-11 emulsifier were obtained. The obtained emulsions were used for the production of Slurry Seal and thin-layer road coatings on its basis. The coatings b…
A new synthetic one-step approach to perform the axial ligand exchange reaction in subphthalocyanines that employs trimethylsilyl-protected nucleophiles as starting materials is reported. Theoretical calculations indicate that the exchange reaction proceeds through a similar 4-centered σ-bond metathesis transition sta…
We demonstrate a two-dimensional (2D) multilayered molybdenum disulfide (MoS2) transistor with molybdenum (Mo) side and edge contacts, which is deposited using a dc-sputtering method. It exhibits field-effect mobility of 23.9 cm2/Vs and ON/OFF ratio of 106in a linear region. A current-voltage study under different tem…
The gamma irradiation induced aging of thermoplastic polymer Estane 5703 in air and water environments was studied by small-angle neutron scattering (SANS), Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), and X-ray diffraction (XRD). The degree of phase mixing was increased after i…
Shape memory alloys are a class of smart materials that recover apparent plastic deformation (∼6%–8% strain) after heating, thus “remembering” the original shape. This shape memory effect can be exploited for self-post-tensioning applications, and NiTi-based shape memory alloys are promising as shape memory effect is…
Plasma post-treatment process was observed to markedly enhance the electron field emission (EFE) properties of ultrananocrystalline diamond (UNCD) films. TEM examinations reveal that the prime factor which improves the EFE properties of these films is the coalescence of ultrasmall diamond grains (∼5 nm) forming large…
In the present work, we propose a molecule (C<sub>14</sub>H<sub>14</sub>) that can be used as a building block of hexagonal diamond-type crystals and nanocrystals, including wurtzite structures. This molecule and its combined blocks are similar to diamondoid molecules that are used as building blocks of cubic diamond…
A mathematical model of the chemical surface deposition process of CdS and CdSe thin films, which allows determining the concentration of reagents, as well as duration and temperature for CSD needed to obtain films of the set thickness was designed. The adequacy of model was tested by Fisher's criterion. The nomogram…
The two-photon photochemistry of CdSe quantum dots (QDs) has been systematically studied. We find that upon intense irradiation CdSe quantum dots that absorb two or more visible photons undergo photodarkening. The quantum yield for this process is on the order of 6% in chloroform and much smaller in nonpolar solvents,…