Materials Literature
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Stimuli-sensitive synthetic polypeptides are unique biodegradable and biocompatible synthetic polymers with structures mimicking natural proteins. These polymers exhibit reversible secondary conformation transitions and/or hydrophilic-hydrophobic transitions in response to changes in environmental conditions such as p…
We present electronic transport measurements of single and bilayer graphene on commercially available hexagonal boron nitride. We extract mobilities as high as 125 000 cm2 V−1 s−1 at room temperature and 275 000 cm2 V−1 s−1 at 4.2 K. The excellent quality is supported by the early development of the ν = 1 quantum Hall…
The solubility of Ag NPs can affect their toxicity and persistence in the environment. We measured the solubility of organic-coated silver nanoparticles (Ag NPs) having particle diameters ranging from 5 to 80 nm that were synthesized using various methods, and with different organic polymer coatings including poly(vin…
The Ph(4)P(+) salt of the tetrahedral complex [Co(SPh)(4)](2-), possessing an S = (3)/(2) ground state with an axial zero-field splitting of D = -70 cm(-1), displays single-molecule magnet behavior in the absence of an applied magnetic field. At very low temperatures, ac magnetic susceptibility data show the magnetic…
Supercapacitor electrode materials: Carbon nanocages are conveniently produced by an in situ MgO template method and demonstrate high specific capacitance over a wide range of charging-discharging rates with high stability, superior to the most carbonaceous supercapacitor electrode materials to date. The large specifi…
GRCop-84 (Cu-8 at.% Cr-4 at.% Nb) has shown exceptional mechanical properties above 932 F (773 K). However, its properties below 932 F (773 K) are inferior to precipitation strengthened alloys such as Cu-Cr, Cu-Zr and Cu-Cr-Zr when they are in the fully aged, hard-drawn condition. It has been noted that the addition o…
Abstract We demonstrate the use of combined thermal annealing and solvent vapor annealing (SVA) to tune the morphology of thermally responsive block copolymer (BCP) thin films. The BCP, poly(styrene‐ b ‐ tert ‐butyl acrylate) (PS‐ b ‐P t BA), undergoes a chemical deprotection to poly(styrene‐ b ‐acrylic anhydride) (PS…
The inhibiting action of a nonionic surfactant of the TRITON-X series (TRITON-X-405) on stainless steel type X4Cr13 in 1.0 M H 2 SO 4 solution within the temperature range of 25–45 °C was studied using the gravimetric and potentiodynamic technique. The inhibition efficiency was found to increase with the inhibitor con…
Perovskite oxides were typically considered as the electronic and ionic conductors for application in the electrolytes for solid oxides fuel cells (SOFCs). Recently, LaFeO 3 -based systems were mainly focused on the electrochemical property for the anode of Ni/MH batteries in our previous work, and the exciting result…
Despite the extensive application of ellipsoidal micro-/nanoparticles, the synthesis of shape anisotropic ellipsoids is rare because of the minimization of surface free energy that favors simple spherical shape rather than complex nonspherical shape. We present the synthesis of silica ellipsoids with hexagonal mesostr…
Novel biosensors have been designed by reporting an analyte-induced (de)swelling of a stimuli-responsive hydrogel (usually in a form of thin film) with a suitable optical transducer. These simple, inexpensive hydrogel biosensors are highly desirable, however, their practical applications have been hindered, largely be…
A family of hollow organosilica nanospheres and nanotubes was synthesized at appropriately low organosilica-precursor/block-copolymer-surfactant ratios. In Pluronic F127 (EO 106 PO 70 EO 106 ) block copolymer templated synthesis of ethylene-bridged organosilicas in the presence of a swelling agent, the lowering of the…
We perform polarization-resolved magneto-optical measurements on single InAsP quantum dots embedded in an InP nanowire. In order to determine all elements of the electron and hole $g$-factor tensors, we measure in magnetic field with different orientations. The results of these measurements are in good agreement with…
The objective of this paper is the study of the influence of the chemical structures of adsorbent and adsorbate on the adsorption process. By using of crab shell chitosan (CC) and deep‐pink shrimp chitosan (CP) for removal of acid 183 and AR114 from aqueous solutions, it is shown that CP, which corresponds to the high…
An ultrasonic-assisted method to directly prepare nanocrystalline TiO2 has been used. TiO2 was synthesized by the hydrolysis of Tetraisopropyl titanate (TIPT) in the presence of de-ionized water and ethanol under high-intensity ultrasonic irradiation (24 KHz, 300 W/cm2) at different conditions. The effect of water con…
Electronic structure calculations based on the density functional theory are performed to clarify the structural stability and electronic states of twin boundary interfaces in calcite polymorph. The calculations demonstrate that atomic arrangements such as interlayer spacing between adjacent bilayers and atomic distor…
Subphthalocyaninatoboron (SubPc) complexes bearing six peripheral n-dodecylthio substituents and an apical photochromic dithienylperfluorocyclopentene unit were prepared. The photoinduced isomerisation of the apical substituent from the open to the ring-closed form significantly influences the photoluminescence of the…
To tailor functional nanomaterials, the co-assembly of self-assembling dyes in a homogeneous way would be a promising approach because the electronic properties can be tuned by the mixing ratio. Although porphyrins are important supramolecular building blocks with unique optical properties, a homogeneously mixed J-agg…
The role of templating sulfate anions in the hydrothermal formation of nanowires from Bi2O3 and K2SO4 is critically discussed on the basis of X-ray diffraction patterns, electron microscopy studies and ion exchange experiments. Thorough analytical investigations of the obtained nanowires together with mechanistic info…
The colloidal crystal templating method combined with the fast firing technique is used to prepare the three-dimensionally ordered macroporous (3-DOM) composite cathodes for solid oxide fuel cells. The 3-DOM cathodes present very low polarization resistances, showing high electrocatalytic activity at intermediate temp…