Materials Literature
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Nanotechnology has progressed by leaps and bounds since it became the focus of intense applied research activity in the late 20th century. In particular, thin films with engineered structures at nanometer length scales have figured prominently in this nanotechnological revolution. Their unique and sometimes exotic and…
Random vibration is being specified for acceptance tests, screening tests and qualification tests by manufacturers of electronic equipment meant for military applications, because it has been shown that random vibration more closely represents the true environment in which the electronic equipment must operate. In thi…
Titanium alloys, mainly because of their poor thermal conductivity, need to be cut at relatively low cutting speeds, with obvious negative consequences on the profitability of machining. An important amount of research activities has been done in order to increase productivity in titanium machining operations: high pe…
The potentials of activated carbon nanoparticles (ACNP) as anticancer drug carriers were studied. ACNP were prepared with a top-down method.
Many biological materials are known for their remarkable structural complexity as well as their impressive mechanical properties. The ultrahard abrasion-resistant radular teeth of the chitons are one such example and members of this group of mollusks, studied by David Kisailus and co-workers on page 2908, have the sur…
International audience
In this study, the kinetic parameters and reaction mechanism of decomposition process of oligo(4‐hydroxyquinoline) synthesized by oxidative polymerization were investigated by thermogravimetric analysis (TGA) at different heating rates. TGA‐derivative thermogravimetric analysis curves showed that the thermal decomposi…
Conductive boron-doped hydrogenated amorphous carbon (B-DLC) thin films were successfully synthesized with RF plasma-enhanced CVD method. By incorporating boron atoms in amorphous carbon, conduction types were changed from n- to p-type, and volume resistivity was decreased from 30.4 (non-doped) to 6.36 × 10−2 Ω cm (B/…
We consider finite-size effects on heat transfer between thermal reservoirs mediated by a quantum system, where the number of modes in each reservoir is finite. Our approach is based on the generalized quantum Langevin equation and the thermal reservoirs are described as ensembles of oscillators within the Drude-Uller…
Nanoparticles have highly size-dependent properties which need to be harnessed for their appropriate use in various applications. One method that has been used to obtain monodisperse nanoparticles involves the initial synthesis of a relatively polydisperse nanoparticle dispersion using conventional methods, followed b…
Solid fats are one of the most difficult stains to remove at low temperatures. Mechanical action is beneficial for stain removal, but the potential and limitations of such an essential part of washing are not known. Fabric abrasion has been studied for the first time in a systematic and controlled manner using a tribo…
Bismaleimide, 5(6)‐maleimide‐1(4′‐maleimidophenyl)‐1,3,3′‐trimethyl indane (BMII) was prepared, different weight ratios (1, 3, 5, 7, and 9%) of cloisite 15a were blended with BMII ultrasonically and thermally polymerized at 230°C for 6 h. The Fourier transform infrared spectrophotometry (FTIR) studies of the polymeriz…
Abstract Innovative nanocomposites are obtained by melt blending poly(1,4‐ cis ‐isoprene) (PI) and graphite oxide intercalation compounds (GOICs) with dimethyl di(hydrogenated tallow) ammonium (2HT) cations ionically bonded to the graphite oxide layers. GOIC samples with different contents of 2HT are prepared and homo…
Effect of strain rate on mechanical properties of pure iron was studied by compression experiments using Gleebe-1500D thermal simulation testing machine and Split-Hopkinson Pressure Bar, indicating that pure iron only has strain rate hardening effect. Adiabatic temperature rise tends to increase with increasing the st…
The present paper describes the first trial application of an Ar/CH 4 /H 2 pulse modulated induction thermal plasma (PMITP) to polycrystalline diamond film deposition on a silicon substrate. The PMITP system has been originally developed by our group to control the heat flux and densities of chemical species in therma…
A linear chain on a simple cubic lattice was simulated by the Metropolis Monte Carlo method using a combination of local and non-local chain modifications. Kink-jump, crankshaft, reptation and end-segment moves were used for local changes of the chain conformation, while for non-local chain rearrangements the "cut-and…
Transformation thermodynamics has potential applications in heat flux management. The geometrical transformation used in the cloaking procedure requires materials that are inhomogeneous and thermally anisotropic. This requirement can be reduced by segmented cloaking, where materials with homogeneous and isotropic ther…
Chitosan-based films containing lavender essential oil (LEO) (0, 0.5%, 1.0%, 1.5% (v/v)) were prepared to evaluate their physical and antibacterial activities. In order to study the impact of the incorporation of LEO into chitosan matrix, the solubility, mechanical property, water vapor permeability, and antibacterial…
A novel antioxidant chitosan film incorporated with pomegranate peel extract (PPE) (0, 1%, 2%, and 3% (w/v)) was developed. The mechanical property, water vapor permeability, total phenolic content and antioxidant activity of the films were investigated. Fourier transform infrared (FTIR) spectra revealed that good int…
ABSTRACT In this study, poly( l ‐lactic acid) (PLLA) was prepared by four typical approach systems, namely, solid–liquid phase‐separation processes from PLLA–dioxane at −80°C, PLLA–dioxane–water at −80°C, PLLA–tetrahydrofuran (THF) at −80°C, and PLLA–THF at 18°C. The microstructural characteristics and crystallization…