Materials Literature
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Abstract The catalytic asymmetric epoxidation of 2‐arylidene‐1,3‐diketones using aqueous 30% H 2 O 2 as oxidant has been successfully realized by a N , N′ ‐dioxide–scandium(III) triflate [Sc(OTf) 3 ] complex, giving the corresponding products in moderate to good yields (up to 85%) with excellent enantioselectivities (…
In this article, we described about the preparation and electrochemical properties of a flexible energy storage system based on a plastic polyethylene terephthalate (PET) substrate. The PET treated with UV/ozone was fabricated with multilayer films composed of 30 polyaniline (PANi)/graphene oxide (GO) bilayers using l…
Extractants such as tri n-butyl phosphate form an explosive composition called as red oil in the presence of nitric acid under high temperatures. The formation and subsequent decomposition of red oil can lead to explosive thermal runaway conditions and is therefore, a safety concern during the spent fuel reprocessing…
Polymeric Schiff base containing aniline, formaldehyde and piperazine (AFPP) was synthesized and investigated as corrosion inhibitor for mild steel in 1 M HCl by weight loss measurements, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. Experimental results showed that AFPP is…
The electronic-type separation of single-wall carbon nanotubes (SWCNTs) by selective adsorption onto hydrogel surfaces has become a highly researched method. However, large variations in both SWCNT dispersion and separation protocols have been reported, making it difficult to elucidate whether changes to dispersion st…
Using first-principles calculations based on density functional theory with generalized gradient approximation (GGA) parameterized by Perdew-Burke-Ernzerhof (PBE) for the exchange-correlation functional, we studied the native point defects in α-Al2O3. We found that oxygen vacancy (VO), Al vacancy (VAl), and Al interst…
Nanoparticles possessing magnetic and fluorescent properties were fabricated by the covalent attachment of fluorescein isothiocyanate onto magnetic polymeric nanoparticles functionalized by chitosan. The synthesized magnetic polymeric nanoparticles-chitosan/fluorescein isothiocyanate were successfully used for labelin…
Polypropylene (PP) non-woven fabrics have been widely used as filtration membranes in wastewater purification with industrial applications due to their low cost, good mechanical strength, and high thermal and chemical stability. The membrane fouling behavior depends strongly on the physical and mechanical properties o…
Phosphorescence emission at room temperature is turned on in an entangled porous coordination polymer (PCP) with naphthalenediimide (NDI) as chromophore, by incorporating halogenated guests into the pores. The phosphorescent efficiency is drastically increased by the incorporation of aromatic halide guests in comparis…
The full matrix of electro-elastic constants of sillenite-type crystals Bi12TiO20 (BTO) and Bi12SiO20 (BSO) were determined by the resonance method, with d14 and k14 being on the order of 40–48 pC/N and 31%–36%, respectively. In addition, double-rotated orientation dependence of d33 was investigated, with the maximum…
Here we extend the theory of space-time or event cloaking into that based on the carpet or ground-plane reflective surface. Further, by recasting and generalizing a scalar acoustic wave model into a mathematically covariant form, we also show how transformation theories for optics and acoustics can be combined into a…
We study the interaction of Dirac Fermions in monolayer graphene on a GaAs substrate in an applied electric field by the combined action of the extrinsic potential of piezoelectric surface acoustical phonons of GaAs (piezoelectric acoustical (PA)) and of the intrinsic deformation potential of acoustical phonons in gra…
A novel route using selenium has been developed to fabricate highly catalytic metal selenide counter electrodes (CE) for sensitized solar cells. To demonstrate the facility of this method, copper selenide is fabricated and characterized in this article. Basically, chemically active red selenium has been deposited firm…
Chemical vapor deposition (CVD) method is considered to be an efficient way to prepare Van der Waals heterostructure. However, accurately and hurtlessly identifying the layers number of MoS(2) in the heterostructure is still a challenge. Here, we calculated the expected contrast between MoS(2)/graphene heterostructure…
A study of the single-pulsed laser ablation process for a polycrystalline diamond is presented. A simulation of the laser ablation process using a finite element model is carried out to understand the temperature evolution, material removal process and mechanisms, as well as the other physical phenomena associated wit…
First-line cancer chemotherapy necessitates high parenteral dosage and repeated dosing of a combination of drugs over a prolonged period. Current commercially available chemotherapeutic agents, such as Doxil and Taxol, are only capable of delivering single drug in a bolus dose. The aim of this study is to develop dual…
ABSTRACT Ferroelectric and piezoelectric behavior in odd‐odd polyamide 11,11 are successfully detected for the first time. The maximum coercive field ( E c ) of 90 MV/m, and a remnant polarization ( P r ) of 40 mC/m 2 are obtained at room temperature. A piezoelectric strain coefficient ( d 33 ) value as high as −3.9 p…
NaREF4 nanocrystals are found to be highly manipulable by electron beam irradiation. With 200 kV electron beam irradiation, both 14.6 nm spherical NaGdF4 :Yb,Er nanoparticles and 44.7 nm × 34.1 nm ellipsoidal NaYF4 :Yb,Er nanorods form hollow structures and eventually convert to the corresponding REF3 upon prolonged i…
Classical molecular dynamics simulations of bicrystalline systems are a commonly used tool for exploring the migration of grain boundaries. Most simulation work to date has focused on measuring the mobility of grain boundaries, assuming it to be an intrinsic property of a boundary of a given geometry. Here we present…
In this research, we further developed the one-step seed mediated method to synthesize gold nanoparticles (GNPs) and control their resulting shapes to obtain hexagonal, triangular, rod-shaped, and spherical gold nanostructures. Our method reveals that the reaction kinetics of formation of GNPs with different shapes ca…