Materials Literature
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AIM: To test the Bacillus strains for their abilities to produce polyhydroxybutyrate (PHB) from different sugars and biowaste (Pea-shells). METHODS AND RESULTS: Six Bacillus strains were checked for their ability to produce PHB from GM2 medium supplemented with different sugars at the rate of 1% (w/v) and from biowast…
The early stages of carbon nanotube nucleation are investigated using field ion/electron microscopy along with in situ local chemical probing of a single nanosized nickel crystal. To go beyond experiments, tight-binding Monte Carlo simulations are performed on oriented Ni slabs. Real-time field electron imaging demons…
Monodisperse and ultrathin LaOCl nanoplates were synthesized via the thermolysis of La(CCl(3)COO)(3) in long chain amine and 1-octadecene. This single source precursor approach is simple but atomically efficient. The uniform amine-capped LaOCl nanoplates can be aligned into nanowire-like and nanorod-like superstructur…
An investigation into the optimal growth of single-walled carbon nanotubes (SWNTs) in vertical arrays, or carpets, is presented utilizing atomic hydrogen catalyst activation with hot filament chemical vapor deposition. Using acetylene decomposition over Fe catalyst, we study the effect of oxidant-assisted growth using…
A general approach for the synthesis of cationic zinc complexes supported by neutral ancillary ligands has been developed and exploited to prepare [ L H][B(C 6 F 5 ) 4 ] ( L = 4-(2,6- i Pr 2 -C 6 H 3 NPPh 2 )dbf), 1a, and [ L H][SO 3 CF 3 ], 1b ) using [HNMe 2 Ph][B(C 6 F 5 ) 4 ] and triflic acid, respectively. Reacti…
Molecular bottle-brushes are highly branched macromolecules with side chains densely grafted to a long polymer backbone. The brush-like architecture allows focusing of the side-chain tension to the backbone and its amplification from the pico-Newton to nano-Newton range. The backbone tension depends on the overall mol…
Highly (00l) oriented Ca3Co4O9-based ceramics were fabricated by spark plasma sintering combined with a dynamic forging process. The grain orientation is effective in lowering the electrical resistivity and enhancing the thermoelectric power factor but with little influence on the Seebeck coefficient. A metallic-to-se…
The three phases of the mononuclear two-step spin crossover compound [Fe(bapbpy)(NCS) 2 ] ( 1 ) are characterized by powder X-ray diffraction, Mössbauer spectroscopy, Raman spectroscopy, calorimetry, and magnetic susceptibility measurements. Mössbauer and Raman spectroscopies confirm the results obtained from previous…
Reversed photoresponse: Indium tin oxide (ITO)/Au nanoparticle (NP)/TiO(2) electrodes (see picture) exhibit cathodic photocurrents and positive photopotentials under visible light, whereas ITO/TiO(2)/Au NP electrodes show an inverted response. This behavior indicates that electron transfer occurs from the plasmon-exci…
Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3 - δ (BSCF) is an interesting material for high temperature oxygen permeation membranes and solid oxide fuel cell cathodes, applications for which oxygen transport properties are crucial. Here oxygen isotope exchange is performed on dense BSCF films prepared by pulsed laser deposition on…
In this review, we describe in detail two important spin-transport phenomena: the extrinsic spin-Hall effect (coming from spin-orbit interactions between electrons and impurities) and the spin-Coulomb drag. The interplay of these two phenomena is analyzed. In particular, we discuss the influence of scattering between…
Characteristics of the ZnO thin film transistor by atomic layer deposition at various temperatures, Kwon, Semyung, Bang, Seokhwan, Lee, Seungjun, Jeon, Sunyeol, Jeong, Wooho, Kim, Hyungchul, Gong, Su Cheol, Chang, Ho Jung, Park, Hyung-ho, Jeon, Hyeongtag
Benzoate (Bz), 2,4-dichlorobenzoate (BzDC), and p- and o-hydroxybenzoate (p- and o-BzOH) anions with antimicrobial activity have been intercalated into [Zn(0.65)Al(0.35)(OH)(2)](NO(3))(0.35).0.6H(2)O, layered double hydroxide (LDH), via anion-exchange reactions. The composition of the obtained intercalation compounds,…
The electronic structure and magnetic properties of disordered FexPd100−x alloys (50<x<85) are investigated in the framework of density functional theory using the full potential local orbital method. Disorder is treated in the coherent potential approximation. Our calculations explain the experimental m…
A dielectric anomaly has been found near the incommensurate to commensurate antiferromagnetic phase transition (TN2≈230 K) in YBaCuFeO5 ceramics, a compound which crystallizes in an ordered perovskite structure. The existence of electric polarization below TN2 suggests the magnetism induced charge polarization effect…
Some results on damage build up in, and amorphization of, Si, induced by 25-30 keV Al$_5^-$, Si$_5^-$ and Cs$^-$ ions, at room temperature, are reported. We show that at low energy, amorphization is a nucleation and growth process, based on the direct impact mechanism. With an Avrami exponent $\sim 1.6$, the growth to…
We report the first magnetic-field-dependent Raman scattering studies on Pb(Zr,Ti)O3-CoFe2O4 bilayer multiferroic system. The phonon frequencies of the nano-bilayers obviously change with magnetic field, which is absent in the single Pb(Zr,Ti)O3 films. The magnetostriction of the CoFe2O4 layer generates stress mechani…
We demonstrate the fabrication of diodes having inkjet printed light emitting quantum dots layer. Close packing of printed layer is shown to be influenced by surface morphology of the underlying polymer layer and size variance of quantum dots used. We extend our approach to printing quantum dots onto a quarter video g…
The operation of four basic two-input logic gates fabricated with a single graphene transistor is demonstrated. Single-transistor operation is obtained in a circuit designed to exploit the charge neutrality point of graphene to perform Boolean logic. The type of logic function is selected by offset of the input digita…
It is fundamentally interesting to study the photoelectrochemical properties of complex oxides for applications in photovoltaics and photocatalysis. In this paper, we study the band gap (E(g)) and energetics of the conduction band (CB) and valence band (VB) for films of zinc stannate (Zn(2)SnO(4)) nanoparticles (ca. 2…