Materials Literature
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We theoretically investigate the possibility of establishing ferromagnetism in the topological insulator Bi2Se3 via magnetic doping of 3d transition metal elements. The formation energies, charge states, band structures, and magnetic properties of doped Bi2Se3 are studied using first-principles calculations within den…
INTRODUCTION: Paclitaxel (PTX) is one of the most effective broad-spectrum chemotherapeutic agents in the treatment of cancers. However, its clinical application has been limited due to its poor water solubility. Its current clinical administration uses the adjuvant of serious side effects and has undesired pharmacoki…
Graphene is exploited to serve as a seamless and inert veil to fabricate a surface-enhanced Raman spectroscopy (SERS) substrate with a passivated surface. This novel approach inherits the concept of metal–molecule isolation (for more well-defined surface interactions) and results in a few superiorities. We find the SE…
Abstract It is been widely reported that plasmonic effects in metallic nanomaterials can enhance light trapping in organix solar cells (OSCs). However, typical nanoparticles (NP) of high quality (i.e., mono‐dispersive) only possess a single resonant absorption peak, which inevitably limits the power conversion efficie…
Electromechanical effects are ubiquitous in biological and materials systems. Understanding the fundamentals of these coupling phenomena is critical to devising next-generation electromechanical transducers. Piezoelectricity has been studied in detail, in both the bulk and at mesoscopic scales. Recently, an increasing…
In this paper, the use of polyimide foam as a lining in double panel applications is considered. It is being investigated here as a replacement for aircraft grade glass fiber and has a number of attractive functional attributes, not the least of which is its high fire resistance. The test configuration studied here co…
We report an enhancement in light emission efficiency of Si nanocrystal (NC) light-emitting diodes (LEDs) by employing 5.5 periods of SiCN/SiC superlattices (SLs). SiCN and SiC layers in SiCN/SiC SLs were designed by considering the optical bandgap to induce the uniform electron sheet parallel to the SL planes. The el…
Abstract Polypropylene nanocomposites were prepared with organic‐modified montmorillonite, by blending the polymer and the organoclay (direct addition), or by blending the polymer with an organoclay/silicone copolymer masterbatch. The effect of the organoclay/silicone copolymer masterbatch on the morphology and proper…
Abstract We have developed an analytic self‐consistent field theory of the effective interactions between nano‐ colloids mediated by irreversibly adsorbing polymers and non‐adsorbing polymers having a gyration radius much larger than that of colloids. By making use of this theory, we have calculated the potential of t…
This is a vital extension of our previously published work. Thermo-responsive copolymer coated superparamagnetic MnFe2O4 nanoparticles are tested for cell viability and affinity on HeLa carcinoma cells under different conditions. Nanoparticles were loaded with anticancer drug doxorubicin. Composite nanoparticles of av…
1,8-Bis(3,6-di(thiophen-3-yl)-9H-carbazol-9-yl)octane (BDTCO) was synthesized via Ullmann and Suzuki couplings. Additionally, its homopolymer and copolymers with 3,4-ethylenedioxythiophene (EDOT), pyrrole (Py) and thiophene (Th) were synthesized and coated onto an ITO–glass surface via electrochemical oxidative polyme…
Abstract : Small electric unmanned air vehicles are often considered limited by the low endurance of several hours, mainly set by the energy of their battery energy storage system. The Naval Research Laboratory has been extending the duration of electric UAVs through the use of hydrogen fuel cells, which take advantag…
Thin MoO2 films were electrodeposited on a selenium pre-deposited SnO2|glass plate. The photoelectrochemical properties of MoO2 films were investigated in 0.1 M Na2SO4 solution by the ultraviolet–visible spectrophotometry, linear sweep voltammetry, and altering current impedance measurement techniques. It was found th…
To date, limited reports are available on the regulatory systems exerting control over bacterial synthesis of the biodegradable polyester group known as polyhydroxyalkanoates (PHAs). In this study, we performed random mini-Tn5 mutagenesis of the Pseudomonas putida CA-3 genome and screened transconjugants on nitrogen-l…
In this study, [Li 0.02 (Na 0.56 K 0.46 ) 0.98 ](Nb 0.81 Ta 0.15 Sb 0.04 )O 3 + x mol% K 5.4 Cu 1.3 Ta 10 O 29 ceramics were fabricated by conventional solid-state solution processes. Then, their dielectric and piezoelectric properties were investigated. Sinterability of all samples was enhanced because K 5.4 Cu 1.3 T…
Poly(butylene succinate- co -diethylene glycol succinate) (P(BS- co -DEGS)) random copolymer was synthesized and characterized in a previous paper [ Ind. Eng. Chem. Res. 2012, 51, 12258−12265]. In this paper, we focus on the isothermal crystallization behaviors of P(BS- co -DEGS). The isothermal crystallization kineti…
Abstract We have demonstrated the preparation of a series of photoaddressable supramolecular block copolymers by mixing a carboxy‐terminated azobenzene derivative, 6‐[4‐(4′‐cyanophenylazo)phenyloxy]hexanoic acid (AZO), and two polystyrene‐ b‐ poly(4‐vinylpiridine) (PS‐ b ‐P4VP) block copolymers. AZO can be selectively…
Abstract A novel carbon black (CB) and nanoclay (NC) dual phase‐filled system in SBR matrix has been developed to be employed as a tyre tread compound with optimized performance properties. The nanocomposite has shown improved dynamic properties i.e. rolling resistance (tan δ at 60°C) and wet skid resistance (tan δ at…
The goals of the NASA Environmentally Responsible Aviation (ERA) Project are to reduce the NO(x) emissions, fuel burn, and noise from turbine engines. In order to help meet these goals, commercially-produced ceramic matrix composite (CMC) components and environmental barrier coatings (EBCs) are being evaluated as part…
Abstract The solicitude to molecularly imprinted conjugated polymers is flourishing due to their auspicious properties for a myriad of technological and industrial applications. The preparation conditions strongly affect the structure, optical, thermal, and electrical properties of these polymers. Subsequently, a cons…