Materials Literature
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Stable dispersions of anisotropic particles with nanometer dimensions can be prepared in a selective solvent through cocrystallization (stereocomplexation) between two enantiomeric poly(lactide) block copolymers: poly( l -lactide)−poly(ε-caprolactone) and poly( d -lactide)−poly(ε-caprolactone). In the conditions of th…
Mechanoluminescence is typically produced by grinding, crushing, or scraping a crystal, which can give a faint glow of light, and was first reported by Francis Bacon in 1605. This light is a microdischarge produced by the local separation of charged surfaces, resulting in a spectrum of gas line emission and the crysta…
The photoelectrochemical responses of WO3 thin films have been investigated as a function of annealing temperature up to 600 °C. WO3 films were deposited on unheated substrates by thermal evaporation followed by annealing at temperatures of 300, 500, and 600 °C for 5 h in air. The WO3 film annealed at 500 °C shows the…
This review describes some new approaches of biomolecule immobilization and transduction of biological processes in the field of biosensors based on electrogenerated polymers. These recent advances were classified according to the nature of the conventional immobilization procedure involved, namely adsorption onto ele…
A new type of dipole antenna using a left-handed transmission line is proposed. The antenna is composed of a transmission line loaded periodically with shunt inductors and series capacitors. The placement of capacitors into one side only of the line leads to currents of different amplitude on the two sides. Because ou…
The Cu(I)-catalyzed alkyne-azide [2 + 3] cycloaddition has been demonstrated to be an effective and orthogonal conjugation reaction to covalently immobilize biomolecules on magnetic nanoparticles (MNPs). The azido group on the MNP surface provides better conjugation efficiency with alkynated molecules. Moreover, the C…
Herein we report a new and simple method of in situ functionalization of CdSe QDs and surface passivation by a thin ZnS shell at the same time. This method avoids a second-step ligand exchange after the core−shell formation and preserved high quantum yield of the QDs. We demonstrated that such prepared QDs can serve a…
Porous carbon particles with a shell/core structure have been prepared successfully by controlled precipitation of the polymer from droplets of oil-in-water emulsion, followed by curing and carbonization. The droplets of the oil phase are composed of phenolic resin (PFR), a good solvent (ethyl acetate) and porogen (Po…
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Pitch-based short-cut carbon fibers were treated by HNO3 oxidation, thereafter the treated (CFN) and untreated carbon fibers (CF) were incorporated into polyimide (PI) matrix to form composites. The carbon fibers before and after treatment were examined by Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoele…
The synthesis of new N-3,5-bis(trifluoromethyl)phenyl-endo-norbornene-5,6-dicarboximide (TFMPhNDI, 2a), N-4-fluorophenyl-endo-norbornene-5,6-dicarboximide (FPhNDI, 2b) and N-2,2,6,6-tetramethylpiperidyl-endo-norbornene-5,6-dicarboximide (TMPNDI, 2c) monomers was carried out. Polynorbornene dicarboximides were obtained…
The transport properties of a d-electron-based transparent conducting oxide, Nb-doped anatase Ti1−xNbxO2, were investigated as a function of the Nb content x. From optical resistivity spectra, the static effective mass was evaluated to be ∼0.4m0 in the low-carrier-concentration (ne) regime, which is approximately the…
The magnetic and electromagnetic wave absorption behavior of a flexible iron-nanoparticle reinforced polyurethane nanocomposite is reported. Surface-initiated-polymerization (SIP) method was utilized to fabricate high-quality nanocomposites with uniform particle distribution and tunable particle loading (up to 65wt%).…
The magnetocaloric effect of Fe91−xMo8Cu1Bx (x=15,17,20) amorphous alloys has been studied. The temperature of the peak of magnetic entropy change can be tuned by altering the Fe∕B ratio in the alloy, without changing its magnitude, ∣ΔSMpk∣. The average contribution of the Fe atoms to ∣ΔSMpk∣ increases with increasing…
Maleic anhydride (MA) and maleated thermoplastic starch (MATPS) are used as reactive compatibil- izers to improve interfacial adhesion in preparing PLA/starch blends. The morphological and thermal proper- ties were examined by using scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). SEM st…
The thermal behavior of a commercially widespread gypsum board (810 kg/m 3 ) under fire condition has been investigated. For this purpose two 12 mm thick gypsum boards are subjected to the standard fire ISO 834 and the temperature distribution within them is measured by means of thermocouples placed at different depth…
The microstructure, crystal structure, and magnetotransport properties of microsized and nanosized Badoped manganites have been investigated. A “two-step” reduction-reoxidation procedure has been used to obtain nanosized ceramic manganite Nd0.70Ba0.30MnO3 (II). The parent microsized manganite Nd0.70Ba0.30MnO3 (I) was…
There are so many textbooks on basic crystallography that one's first reaction on seeing yet another one appear is to wonder whether it is needed.I can say, however, from years of teaching this subject to undergraduates and graduates, that no matter how many such books there are, this is a subject that is still poorly…
Programmed nanoscaled systems are emerging that may be very useful for tumor-targeted drug delivery: novel nanoparticles are pre-programmed to alter their structure and properties during the drug delivery process to make them most effective for the different extra- and intracellular delivery steps. Programming is effe…
Three new models for the effective thermal conductivity of concentrated particulate composites are developed using the differential effective medium approach. One model predicts the relative thermal conductivity (K r ) of a particulate composite to be a function of two variables, namely thermal conductivity ratio λ (r…