Materials Literature
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Abstract An electret is a dielectric material exhibiting a quasi‐permanent electric charge. The aim of this work is to give access to PC electret materials with a distinctly improved electret performance. In this context, the charge storage capabilities of corona charged films of several PC grades were investigated by…
High-energy x-ray diffraction is employed to study the atomic structure of bulk Ge(x)As(2x)Te(100-3x) glasses with compositions in the range 25 ≤ 3x ≤ 70. The coordination environments of Te atoms suggest significant violation of chemical order in these glasses. Analyses of the nearest-neighbor coordination environmen…
Abstract Novel nanoparticles based on conjugated polymer with good fluorescent properties were synthesized by Suzuki coupling reaction using certain surfactants as one kind of special emulsion polymerization. The luminescent properties of the prepared nanoparticles could be controlled by selecting different monomers.…
Thin film shape memory alloys have recently become a promising material for the actuation of devices on the microscale such as micropumps and microvalves. Their utilization, however, has been limited due to the difficulty in tailoring their properties for different applications. Control over the transformation tempera…
We have deposited La2/3Sr1/3MnO3(110) thin films by pulsed laser deposition, changing the ratio of surface diffusivity to deposition flux (D/F) by adjusting substrate temperature and laser repetition rate. We show that persistent two-dimensional layer-by-layer growth, at least up to 30 nm, can be achieved by exploitin…
The effect of two types of oil palm fibres (bunch and fruit) on mechanical properties of polyester composites is examined in the current work considering different volume fractions. Tensile, compression, and flexural properties of the composites were investigated. In addition to that, tensile strengths were calculated…
X-ray crystallography, inductively coupled plasma spectroscopy, electrospray mass spectroscopy, and combustion elemental analysis were used to determine the content and structure of copper and zinc bis-glycinate crystals. Crystals were grown from copper sulfate-glycine and zinc hydroxide-glycine solutions. The crystal…
To construct an efficient GPx mimic, a novel method for preparing polymer-based vesicles carrying GPx-active sites was developed. A series of block copolymers loaded with recognition and catalytic sites were synthesized based on polystyrene-block-poly[tri(ethylene glycol) methyl ether acrylate]s (PS-PMEO(3) MAs). By a…
To overcome the side effects and drug resistance in cancer chemotherapy, oxaliplatin (OXA) was encapsulated in chitosan based polymeric micelles with glycolipid-like structure, which were formed by stearic acid-grafted chitosan oligosaccharide (CSO-SA). CSO-SA with 6.89% amino substituted degree was synthesized in thi…
Abstract The initial stages of gas‐phase polymerizations of propylene and ethylene are analyzed using a fixed bed stopped flow reactor. The very early development of particle morphology and polymer properties is analyzed for three different commercial catalyst systems: MgCl 2 ‐ and SiO 2 ‐supported Ziegler–Natta and S…
4-(2-(4-pyridinyl)Ethynyl)benzenic diazonium salt (PBD) was used to modify multiwalled carbon nanotubes (MWCNTs) by the self-assembly technique. After the decomposition of the diazonium group in PBD under UV irradiation, the PBD monolayer film covalently anchored on multiwalled carbon nanotubes is very stable. The obt…
Minimal quenching of fluorescence emission was observed when the fluorescent dye AlexaFluor 514 (AF514) was covalently bound to gold monolayer protected clusters (AuMPCs) that have negligible plasmon bands (diameters <2 nm). The fluorescence emission of the conjugated dye was measured as a function of dye−AuMPC mixing…
In this paper, we report on gold nanoparticle (GNP) doped silk films as an implantable and degradable heating element activated by light, which can be potentially used for wireless powering of implanted microdevices. Proof-of-concept experiments have been conducted by casting a GNP doped silk film on a miniature therm…
An energy cell for scavenging light and thermal energies is reported. This energy cell, consisting of a carbon nanotube film (CNF) integrated with a lead zirconate titanate cantilever, is capable of converting light and thermal energies into electricity. This device is based on actuation of CNF upon illumination by li…
Abstract This work is aimed at determining the effect of nanoclay and polyepichlorohydrin‐ co ‐ethylene oxide (ECO) content on the microstructure and mechanical properties of PA6/ECO thermoplastic elastomers (TPEs). TPE nanocomposites were prepared in a laboratory mixer using polyamide 6 (PA6), ECO, and an organoclay…
The shock-front structures of nanocrystalline Al are investigated in detail by exploring the relationship between the evolution of stress, particle velocity distributions, and the atomistic structures through molecular dynamics simulations. It is found that in nanocrystalline Al the contribution of grain boundary-medi…
Abstract A series of novel poly(amine–amide–imide)s (PAAIs) based on tetraphenyl‐ p ‐phenylenediamine (TPPA) units showing anodically/cathodically electrochromic characteristic with three primary colors [red, green, and blue (RGB)] were prepared from the direct polycondensation of the TPPA‐based diamine monomer with v…
We present data for the temperature dependence of the magnetic penetration depth $\ensuremath{\lambda}(T)$, heat capacity $C(T)$, resistivity $\ensuremath{\rho}(T)$, and magnetic torque $\ensuremath{\tau}$ for highly homogeneous single-crystal samples of ${\text{Fe}}_{1.0}{\text{Se}}_{0.44(4)}{\text{Te}}_{0.56(4)}$. $…
Hydrophobic nonaggregating metal-free azaphthalocyanines (AzaPc) of the tetrapyrazinoporphyrazine type were synthesized, characterized, and used for oligonucleotide labeling. Both 3'-end and 5'-end labeling methods using solid phase synthesis suitable for automatic processes in the DNA/RNA synthesizer were developed.…
Emission spectra in the ~240–1100 nm wavelength region as well as the temporally resolved decay of Yb3+ and point defect spontaneous emission have been recorded when aluminosilicate optical fibers doped with Yb are irradiated with ~160 fs laser pulses having a central wavelength of ~250 nm(ℏω=5 eV). Photoexcitation of…