Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTStable Aqueous Dispersion of Conducting Polyaniline with High Electrical ConductivityJing Luo, Hongming Zhang, Xianhong Wang, Ji Li, and Fosong WangView Author Information State Key Laboratory of Polymer Physics and Chemistry, Chang…
D-3-Hydroxybutyrate dehydrogenase from Pseudomonas putida belongs to the family of short-chain dehydrogenases/reductases. We have determined X-ray structures of the D-3-hydroxybutyrate dehydrogenase from Pseudomonas putida, which was recombinantly expressed in Escherichia coli, in three different crystal forms to reso…
Abstract Polyethylene (PE) chains grafted onto the sidewalls of SWCNTs (SWCNT‐ g ‐PE) were successfully synthesized via ethylene copolymerization with functionalized single‐walled carbon nanotubes (f‐SWCNTs) catalyzed by rac ‐(en)(THInd) 2 ZrCl 2 /MAO. Here f‐SWCNTs, in which α‐alkene groups were chemically linked on…
Abstract An heterofunctional initiator combining two reactive sites for ring opening polymerization and two for atom transfer radical polymerization was used to prepare three A 2 B 2 miktoarm star copolymers of poly(ε‐caprolactone) (PCL) and polystyrene (PS). The morphology and thermal properties were studied by trans…
The crystal structure of the title compound, nickel telluride, with composition Ni 2.60 Te 2 , has been the subject of a previous investigation based on X-ray powder data, when a slightly different composition of Ni 2.58 Te 2 was determined [Gulay & Olekseyuk (2004). J. Alloys Compd , 376 , 131–138]. In contrast t…
To describe the stability of radiation survey meters (RSMs) and electronic pocket dosemeters (EPDs), we examined 28 EPDs and 24 RSMs: 12 used NaI(Tl) scintillation RSMs and 12 used Geiger-Muller(GM) RSMs. We used simple methods for the relative calibration of the 24 RSMs and 28 EPDs. The RSM and EPD measurements were…
Induced stresses in textiles play a major role in their mechanical properties, either during fabrication or use. The aim of this work is to present the development of a dedicated sensor, which could be directly inserted in a fabric. The study is focused on seat-cover fabrics. The developed sensor is based on polyvinyl…
Inhomogeneities in the energy bands of semiconducting carbon nanotubes (CNTs) are investigated with scanning gate microscopy (SGM). Non-uniform responses of a semiconducting CNT to a local electric field are found in SGM images which are obtained at the different depletion states of the CNT. The results indicate that…
Abstract The synthesis of statistical copolymers consisting of 2‐ethyl‐2‐oxazoline (EtOx) and 2‐“soy alkyl”‐2‐oxazoline (SoyOx) via a microwave‐assisted cationic ring‐opening polymerization procedure is described. The majority of the resulting copolymers revealed polydispersity indices below 1.30. The reactivity ratio…
In the past decade interest in biopolymers has increased. Attempts were made to prepare new composite systems from biopolymers by binding different synthetic polymers to a biopolymer backbone. This paper reports the synthesis and characterization of derivatized broom fibers to prepare composites with either degradabil…
We investigate the impulsively excited acoustic dynamics of nanoscale Au triangles of different sizes and thicknesses on silicon and glass substrates. We employ high-speed asynchronous optical sampling in order to study the damping of the acoustic vibrations with high sensitivity in the time domain. From the observed…
Lead-free ceramics 0.95K 0.5 Na 0.5 (Nb 0.94 Sb 0.06 )O 3 –0.05 LiTaO 3 + x mol%BaO (0 ≤ x ≤ 3.00) have been fabricated by an ordinary sintering technique. The results of x-ray diffraction show that the ceramic with a perovskite structure changes from tetragonal phase to pseudocubic phase by increasing the doping leve…
The complex dielectric properties of CoTiO 3 ceramics were investigated as functions of temperature (130 K ≤ T ≤ 430 K) and frequency (100 Hz ≤ f ≤ 100 kHz). Two thermally activated dielectric relaxations were observed. TiO 2 addition and annealing treatments were used to modify the behaviour of these relaxations. It…
Combined field ion and electron microscopy and mass spectrometry have revealed the presence of linear carbon chains at the surface of sharpened carbon fibers treated by electric fields of the order of 1011 Vm amp; 8722;1. Linear chains attached to carbon tips consisting of more than ten atoms can be produced in situ i…
Abstract Single crystal growth experiments were conducted to investigate the growth rate of acetaminophen (paracetamol) crystals under carefully controlled conditions of temperature, supersaturation and pH value. The relative growth rate of the different faces was studied. Growth Rate Dispersion (GRD) was observed by…
The diffusion process of a single spherical nanoparticle immersed in a fluid solvent is studied by molecular dynamics simulations. When the nanoparticle mass stays constant, it is shown that, at short times, the decay of the nanoparticle velocity autocorrelation function is strongly modified when the particle diameter…
ZnS nanotetrapods have been synthesized through the direct reaction of Zn with S via a thermal evaporation method in Ar at 800 °C without catalyst. Studies on the microstructures give experimental evidence for the growth mechanism of ZnS nanotetrapods. A zinc blende (ZB) ZnS core nucleates in the first stage during th…
Measured values of the three-phase line tension in the literature are correlated with the spreading parameter and with the radii of the drops or bubbles under investigation. The latter dependence contradicts an assumption of the modified Young equation. We suggest an alternative empirical formulation that describes th…
The first polyoxometal complex possessing affirmatory mixed molybdenum-tungsten capped Keggin-type structure has been hydrothermally synthesized.
The purpose of this paper is to investigate experimentally the shift of the eutectoid point in the Fe–C binary system when applying a high magnetic field. The eutectoid carbon content is observed to shift from 0.77 wt% to 0.83 wt% under a 12 T magnetic field. A practical and complete calculation method is proposed—on…