Materials Literature
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Efforts to mimic complex-structured biologically based materials such as abalone shell have occupied substantial research time and effort in science and engineering. The majority of the efforts involve tedious and expensive techniques and processes. Layer-by-layer (LBL) is one such technique that can produce materials…
Thin films of undoped amorphous carbon thin film were fabricated by using Chemical Vapor Deposition and their structure was investigated by using High Resolution Transmission Electron Microscopy and Raman Spectroscopy. Angular magnetoresistance (MR) has been observed for the first time in these undoped amorphous carbo…
Two low-cost, micropatterned, solution-gated field effect transistors (modified FET and unmodified FET) based on reduced graphene oxide (RGO) were developed and used for detection and discrimination of nucleoside triphosphates (NTPs). The modified FET was realized by simple deposition of a positively charged bis-pyren…
Liver glycogen represents an important physiological form of energy storage. It plays a key role in the regulation of blood glucose concentrations, and dysregulations in hepatic glycogen metabolism are linked to many diseases including diabetes and insulin resistance. In this work, we develop, optimize, and validate a…
In this article, conductive composite foams were developed by in situ polymerization of aniline on polyurethane (PU) foam. After the polyaniline (PANI) deposition process on the interior surfaces of the porous PU foams, the nonconductive PU foams became conductive composites. The morphology of coating has been observe…
Gels are interesting soft materials owing to their functional properties leading to potential applications. This paper deals with the synthesis of monocholesteryl derivatized calix[4]arene (G) and its instantaneous gelation at a minimum gelator concentration of 0.6% in 1:1 v/v THF/acetonitrile. The gel shows remarkabl…
Nonlinear optics deals with phenomena where "light controls light"; e.g., there is mediation by an intensity-dependent medium through which light propagates. This field has attracted much attention for its immense potential in applications dependent on nonlinear processes, such as frequency conversion, multiple-photon…
ABSTRACT Conductive polyphenylene sulfide (PPS)/polyamide 6 (PA6)/multiwalled carbon nanotube (MWCNT) composites having 10–30 wt % PA6 and 1 wt % MWCNTs are prepared by melt mixing at 300°C for 8 min using a high concentration PPS/MWCNT masterbatch approach, and the migration kinetics of MWCNTs from thermodynamically…
We review the current status of nondestructive high-resolution X-ray diffractometry research on semiconductor structures with quantum dots (QDs). The formalism of the statistical theory of diffraction is used to consider the coherent and diffuse X-ray scattering in crystalline systems with nanoinclusions. Effects of t…
We observed a drastic change in electronic domain structures during the metal-insulator transition (MIT) via strong elastic coupling in single crystalline ${\mathrm{VO}}_{2}$ films. The domain structure drastically changed from one type to another due to increasing elastic coupling with film thickness. This drastic ch…
Homo- and heterobimetallic homoleptic complexes of general formula Er x Yb 3– x Q 9 (Q = 8-quinolinolato; x = 0, 1; x = 1, 2; x = 2, 3 ) and the corresponding heteroleptic complexes Er x Yb 3– x Q 8 NO 3 ( x = 0, 1b; x = 1, 2b; x = 2, 3b ), where one Q ligand is replaced by a nitrate anion, have been synthesized and f…
In nearly all process industries, crystallization is used at some stage as a method of production, purification or recovery of solid materials. In recent years, a number of new applications have also come to rely on crystallization processes such as the crystallization of nano and amorphous materials. The articles in…
Bi0.97Na0.03Fe1−xNixO3 (x = 0, 0.005, 0.01, 0.015) nanoparticles are prepared via a sol-gel method. Weak ferromagnetism and exchange bias phenomenon without field cooling are observed in the samples. The oxygen vacancy concentration and leakage current density are increased with increasing the Ni content. However, wit…
A highly regiosymmetric homopolymer based on a diethyl malonate derivatized 3,4-propylenedioxythiophene (ProDOT) monomer was synthesized through FeCl3 oxidative polymerization and postpolymerization functionalization to realize a water-processable blue-to-transmissive switching electrochromic polymer (WPECP-blue). As…
The melting behaviour in the pseudo-binary system (UO2 + NpO2) has been studied experimentally for the first time in this work with the help of laser heating under controlled atmosphere. It has been observed that the solidus and liquidus lines of this system follow an ideal solution behaviour (negligible mixing enthal…
We study the optical properties of polymer layers filled with phosphor particles in two aspects. First, we used two different polymer binders with refractive indices n = 1.46 and n = 1.61 (λ = 600 nm) to study the influence of Δn with the phosphor particles (n = 1.81). Second, we prepared two particle size distributio…
We have investigated the inner structure of shear-induced precursor of shish kebab of isotactic polystyrene (iPS) above the nominal melting temperature T m using microbeam wide-angle X-ray scattering. We first studied the effects of the shear rate on the inner structure and found that the crystallinity in the precurso…
An investigation into the crystal chemistry of the alkali thorium silicates resulted in the formation of five novel materials by hydrothermal synthesis. Of these, Rb 4 Th 2 Si 12 O 30, and K 2 ThSi 4 O 10 F 2 are new structure types crystallizing in space groups P 1̅ and Pnma, respectively. The structure of Rb 4 Th 2…
Ultrathin gallium oxide layers with a thickness of 2.8 ± 0.2 nm were transferred from the surface of liquid gallium onto solid substrates, including conjugated polymer poly(3-hexylthiophene) (P3HT). The gallium oxide exhibits high mechanical stability, withstanding normal pressures of up to 1 GPa in contact mode scann…
A dense, homogeneous and crack-free ferroelectric PZT thin film with 〈100〉-preferred orientation was produced using the sol-gel method. The volume fraction α(100) of 〈100〉-oriented grains in the PZT film was calculated [α(100) ≈ 80%] from XRD of the PZT thin film and powder. The PZT thin film exhibits an open polariza…