Materials Literature
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The electrical and physical properties of pure single-walled carbon nanotube thin films deposited through a layer-by-layer-self-assembly process are discussed. The film thickness was proportional to the number of dipping cycles. The film resistivity was estimated as 2.19×10−3 Ω cm after thermal treatment processes wer…
Abstract The cycloterpolymerizations of diallyldimethylammonium chloride, 3‐( N,N ‐diallylammonio)propanesulfonate, and sulfur dioxide afforded a series of pH‐responsive cycloterpolymers in excellent yields. The solution properties of these ionic polymers were controlled by the composition of the monomeric units; exhi…
Nanoaggregates such as nanowires, nanoparticles, nanotubules, and nanoribbons were prepared from bulk crystals, which are shaped as needles (1), blocks (2), tubules (3α), and plates (3β), respectively, by grinding and ultrasonication. Nanowires have diameters of approximately 2 nm, lengths of thousands of nanmeters, a…
The electrical resistance behavior of a shape memory alloy (SMA) wire can be used for sensing the state of an SMA device. Hence, this study investigates the resistance evolution in SMAs. A lumped parameter model with cosine kinetics to capture the resistance variation during the phase transformation is developed. Seve…
We investigate the formation of an ordered array of metal nanoclusters via selective doping of microphase-separated nanodomains in thin diblock copolymer films. Nanostructure formation during this doping process is probed in situ with microbeam grazing incidence small-angle X-ray scattering (μGISAXS) and ex-situ with…
Using first-principles calculations in a supercell model with structural optimization, we investigate the magnetic ground state of LiFeAs and its phonon spectrum. The obtained magnetic ground state is the marginal striped antiferromagnetic state with partial structural relaxations. It is found that the anisotropic spi…
Anisotropic metal nanoparticles have been paid much attention because the broken symmetry of these nanoparticles often leads to novel properties. Anisotropic gold nanoparticles obtained by wet chemical methods inevitably accompany spherical ones due to the intrinsically high symmetry of face-centred cubic metal. There…
In this study, the thermal and electrical modeling of a solar thermoelectric generator has been done. One side of the thermoelectric module was heated with the radiation concentrated by a parabolic collector, and the other side was cooled by water at a constant temperature. Thermal and electrical behaviors of the conc…
In this paper by employing various experimental facts for different classes of materials, two critical conditions are derived, which lead to the empirically used scaling relations describing the ac response of disordered nonmetals. In parallel the origin of time-temperature superposition is explored while the scenario…
We investigate nanosecond photoluminescence processes in colloidal core/shell CdSe/ZnS nanoparticles dissolved in water and found strong sensitivity of luminescence to the solvent state. Several pronounced changes have been observed in the narrow temperature interval near the water melting point. First of all, the lum…
The structure and organization of dodecyl sulfate (DDS) surfactant chains intercalated in an Mg-Al layered double hydroxide (LDH), Mg(1-x)Alx(OH)2, with differing Al/Mg ratios has been investigated. The Mg-Al LDHs can be prepared over a range of compositions with x varying from 0.167 to 0.37 and therefore provides a s…
Abstract Biodegradable and photocurable multiblock copolymers of various compositions were synthesized by the high‐temperature solution polycondensation of poly(ε‐caprolactone) (PCL) diols of molecular weight ( M n ) = 3000 and poly(ethylene glycol)s (PEG) of M n = 3000 with a dichloride of 5‐cinnamoyloxyisophthalic a…
In modern transformation optics, one explores metamaterials with properties that vary from point to point in space and time, suitable for application in devices such as an "optical invisibility cloak" and an "optical black hole". We propose an approach to construct spatially varying and switchable metamaterials that a…
Magnetic nano-structured materials have attracted much attention due to their unique properties and potential applications. Magnetic induction heating behavior in magnetic particles provides a benefit for biomedical applications, such as targeted drug delivery 1, 2 , diagnostics 3 , and magnetic separation The magneti…
Abstract The formation of various exotic morphologies of block copolymers in dilute solutions has often been claimed on the basis of TEM imaging. Do they really exist in solutions or are they just some kinetically frozen structures arising from TEM sample preparation? It is shown that different morphologies are formed…
Abstract Poly(ethylene terephthalate)/multiwalled carbon nanotubes (PET/MWCNTs) with different MWCNTs loadings have been prepared by in situ polymerization of ethylene glycol (EG) containing dispersed MWCNTs and terephthalic acid (TPA). From scanning electronic microscopy images of nanocomposites, it can be clearly se…
Two types of organic modification agents, hydrogen silicone oil and silane coupling agent, were used in the preparation of novel organic calcium sulfate whiskers (OCSW-H and OCSW-K). Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis were used to investigate the struct…
Photoalignment of nematic liquid crystals is obtained on the chalcogenide glassy thin film of As2S3 using irradiation with polarized blue light. A uniform homogeneously aligned device is obtained with high contrast and strong anchoring. The device alignment quality is permanent as checked by following its functionalit…
Abstract Uniform small onion‐like carbon (OLC) modified with molybdenum carbide has been synthesized by a one‐step process, using detonation‐assisted chemical vapor deposition. The obtained material was characterized by transmission electron microscope, energy‐dispersive X‐ray spectroscopy, Raman spectroscopy, and X‐r…
Monodispersed Co nanoclusters have been grown on a graphene moiré on Ru(0001) at room temperature. Scanning tunneling microscopy measurements showed that the Co clusters nucleate at both the fcc and hcp regions. Co forms finely dispersed small three-dimensional (3D) clusters on graphene/Ru(0001), and a defined long-ra…