Materials Literature
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We review the electronic properties of bilayer graphene, beginning with a description of the tight-binding model of bilayer graphene and the derivation of the effective Hamiltonian describing massive chiral quasiparticles in two parabolic bands at low energies. We take into account five tight-binding parameters of the…
We review the electronic properties of bilayer graphene, beginning with a description of the tight-binding model of bilayer graphene and the derivation of the effective Hamiltonian describing massive chiral quasiparticles in two parabolic bands at low energies. We take into account five tight-binding parameters of the…
The reaction of Cu(Ac)2·4H2O with 2-[(3,5-dichloro-2-hydroxy-benzylidene)-amino]-2hydroxymethyl-propane-1,3-diol (H4L) and 4,4′-bipyridyl-N,N′-dioxide (4,4′-bipy-NO) in DMF under solvothermal conditions leads to the formation of a di-radical dinuclear copper complex [Cu2(4,4′-bipy-NO)(dcdmap)4] (1) (dcdmap is the anio…
Triangle-shape carbon fiber reinforced polymeric composites is a plausible material for fabricating the radar absorbing structure. In order to design the effective electromagnetic wave absorber, the dielectric properties of its constituents are required in the target frequency band. In this paper, the unidirectional t…
An effective optical ‘cloak’ consisting of lenses was developed. Experiments show that it works well at multi-frequencies or in broadband in the visible range. The intensity distributions of the input beam and the output beam are almost the same, and the distortion of the wavefront of the output beam is negligible. Th…
Crystalline monolayers of polymer particles are useful templates for surface microstructuring. Here, the authors discuss the use of oxygen plasma to tune interparticle distances in such films. A systematic evaluation of the etch process depending on particle size, plasma power, etching time and particle density was pe…
Continued tightening of overlay control budget in semiconductor lithography drives the need for improved metrology capabilities. Aggressive improvements are needed for overlay metrology speed, accuracy and precision. This paper is dealing with the on product metrology results of a scatterometry based platform showing…
Recent experiments with nitrogen as a seeding gas in fusion plasma devices together with the option of using beryllium as an armor material in the future ITER tokamak (International Thermonuclear Experimental Reactor) have raised new interest in the interactions of beryllium surfaces with nitrogen (atomic or molecular…
Si quantum dots (Si QDs)/SiC multilayers were fabricated by annealing hydrogenated amorphous Si/SiC stacked structures prepared in plasma enhanced chemical vapor deposition (PECVD) system. The microstructures were examined by transmission electron microscopy (TEM) and Raman spectroscopy, and results demonstrate the fo…
In reviewing some recent work in metamaterials, we highlight two exciting new frontiers just emerging in this field — metamaterials made by new electronic materials (particularly graphene) and inhomogeneous metasurfaces to control light wave-fronts.
Depletion interaction between an infinite repulsive potential and larger species in a binary mixture is known to arise when the binary mixture is confined by hard or soft repulsive balls. We report that such depletion interactions can arise even if the binary mixture is subjected to a finite potential barrier. This le…
We present a detailed assessment of centrifugation technique for purification of single wall carbon nanotubes (SWCNTs) for application as transparent conductive electrodes. As-grown and highly-purified SWCNTs were dispersed in surfactants by ultrasonication, and then centrifuged to selectively remove carbonaceous and…
Graphene-based nanocomposites are regarded as potential candidate for hydrogen storage. In this work, the energetics of the hydrogen adsorption on graphene with TiO2 decoration is systematically investigated based on first-principles total energy calculations. TiO2 cluster is chemisorbed on graphene via O–C bonds. The…
The Drosophila melanogaster Hox protein ultrabithorax (Ubx) has the interesting ability to hierarchically self-assemble in vitro into materials that have mechanical properties comparable to natural elastin. Ubx materials can be easily functionalized by gene fusion, generating potentially useful scaffolds for cell and…
The automated manufacturing of several complex shape composite parts simultaneously by compression and transfer molding method faces the problem of poor elastic properties of synthetic fibers, what leads to the insufficient depth of formed part and fiber breakage. Alternative to synthetic fibers, vegetable fibers have…
Art. 055021, 14 S.
Density functional theory (DFT) calculations have been performed to investigate Ti adsorption on BC 2 N nanotubes and the hydrogen adsorption capacity of Ti-coated structures. Different adsorption sites have been examined for the Ti adatom, and it is found that the most stable structure has a configuration with altern…
In order to develop a new process for concentrating and separating sodium sulfate (Na 2 SO 4 ) and magnesium sulfate (MgSO 4 ) of the bloedite based on tetrahydrofuran (THF) hydrate method, the equilibrium of the ternary systems THF–Na 2 SO 4 –H 2 O and THF–MgSO 4 –H 2 O and the quaternary system THF–Na 2 SO 4 –MgSO 4…
In this study, DOX-loaded supramolecular nanocarrier (DLSC) was assembled by using two new amphiphilic polymers, octreotide-polyethylene glycol monostearate (OPMS) and N-octyl-N-succinyl O-carboxymethyl chitosan (OSCC). The characteristics of the DLSC were investigated. The results indicated that the significant pH-tr…
The thin films of silicon nanocrystals (Si-NC) embedded in silicon carbide (SiC) matrix (Si-NC:SiC) were developed by using hot-wire chemical vapor deposition (HWCVD) from silane (SiH4) and methane (CH4) mixture gases diluted by hydrogen (H2). This method avoids the co-precipitation of Si-NCs and SiC-NCs from a high-t…