Materials Literature
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In this work we investigate the interaction of charge carriers in graphene with a series of p-n-p junctions arranged according to a deterministic quasiperiodic substitutional Fibonacci sequence. The junctions create a potential landscape with quantum wells and barriers of different widths, allowing the existence of qu…
In this paper, we characterize the performance of monolithically integrated graphene interconnects on a prototype 0.35-μm CMOS chip. The test chip implements an array of transmitter/receivers to analyze the end-to-end data communication on graphene wires. Large-area graphene sheets are first grown by chemical vapor de…
Nonspecific protein adsorption, particularly fibrinogen (Fg), is thought to be an initiating step in the foreign body response (FBR) to biomaterials by promoting phagocyte attachment. In previous studies, we therefore prepared radiofrequency glow discharge (ethylene oxide)-like tetraglyme (CH(3)O(CH(2)CH(2)O)(4)CH(3))…
The enthalpy landscape of CaC(2) was investigated on the ab initio level, and possible (meta)stable structures are predicted. Simulated annealing was used as a global exploration method for the determination of the local minima on the enthalpy landscapes, where the only information supplied was the number of atoms per…
We propose a new method for the direct measurement of the most-stable contact angle, using the mechanical vibration of sessile drops from different metastable states. We relaxed sessile drops of identical volume but with different stable contact angles between advancing and receding configurations. Before the vibratio…
The hydrolysis and fate of cyanogen chloride (CK) in the presence of triethylenediamine (TEDA)—a widely used carbon impregnant—in aqueous and nonaqueous (acetonitrile) media has been determined. In the presence of water, anticipated TEDA substitution is not observed; rather, simple base-catalyzed (OH − ) hydrolysis to…
Abstract New composite nanostructures based on two allotropic forms of carbon, the arrays of vertically aligned carbon nanotubes (CNTs) and planar graphite layers (PGL) located at the top of the arrays, so‐called “CNT–PGL nanostacks”, have been synthesized by the injection CVD method using xylene/ferrocene solution. T…
Two rare earth coordination compounds with 2,4,6-pyridinetricarboxylic acid (H3pta) have been synthesized by the hydrothermal method; the formula is {[RE(pta)(H2O)3] · H2O} n [RE = Sm (1) and Dy (2)]. Complexes 1 and 2 are crystallized in the monoclinic crystal system with P21/c space group. X-ray structure analyses s…
Abstract The influence of two types of surface treatments (aminosilane and Lica‐12) on the mechanical and thermal properties of polypropylene (PP) filled with single and hybrid filler (silica and mica) was studied. An improvement in tensile properties and impact strength was found for both treatments compared to those…
A series of new symmetric tetrathiafulvalene derivatives were designed and synthesized. These compounds have highly ordered lamello-columnar liquid crystalline phases in addition to their crystalline phases at lower temperatures. Charge transport in the organic thin-film-transistor devices is faster in the liquid crys…
Abstract This paper proposes the concept of using bisensitizers (CdS and CdSe) to improve the light‐harvesting capabilities and charge transfer in ZnO photoelectrodes. The novel flower‐like ZnO nanoarrays were grown by chemical bath deposition and they are sensitized with CdS quantum dots (QDs) and a CdSe overlayer. W…
We introduce a class of conformal versions of the previously introduced quasi-conformal carpet cloak, and show how to construct such conformal cloaks for different cloak shapes. Our method provides exact refractive-index profiles in closed mathematical form for the usual carpet cloak as well as for other shapes. By an…
The stability of graphene nanoribbons in the presence of typical atmospheric molecules is systematically investigated by means of density-functional theory. We calculate the edge formation free energy of five different edge configurations passivated by H, ${\text{H}}_{2}$, O, ${\text{O}}_{2}$, ${\text{N}}_{2}$, CO, ${…
This article focuses on the physical chemical aspects of the formation of supramolecular nanoparticles with defined size and varying shape through electrostatic self-assembly of macroions and multivalent aromatic counterions. For cationic poly(amidoamine) dendrimers and different di- and trivalent sulfonate groups car…
For the first time, an antireflective structure (ARS) on a convex spherical glass surface was fabricated using an imprinting process. The inverted pattern of the ARS with a 250-nm period was fabricated on a SiC mold with a concave surface using electron beam (EB) direct writing and reactive ion etching. The sample sur…
We present a molecular dynamics investigation of the cross-plane thermal conductivity of superlattices using the non-equilibrium molecular dynamics method. The purpose is to investigate the influence of the interfaces, which is expected to be important in those nanostructures where the superlattice period is smaller t…
A series of “virtual powder diffraction experiments” was made on models of small single crystals and nanocrystals with the core-shell structure. The results of those experiments were elaborated with application of standard methods of data analysis routinely used for reciprocal and real space analyses of polycrystallin…
Nitrogen-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite (UNCD/a-C:H) films were deposited by pulsed laser deposition. The film doped with a nitrogen content of 7.9 at. % possessed n-type conduction with an electrical conductivity of 18 Ω -1 ·cm -1 at 300 K. A heterojunction with p-type Si e…
Abstract The aim of this work was to study the effect of crystallinity degree on the thermal, mechanical, and fracture properties of poly(lactic acid)/organomodified montmorillonite (PLA/OMMT) nanocomposites. Samples with two different compositions (0.5 and 2.5% weight OMMT in PLA) were prepared by melt mixing in a tw…
Heterointerfaces of correlated electron oxides provide a good laboratory to explore novel electronic states induced by the coupling among spin, charge, and orbital degrees of freedom. For the detail understanding of the complex interface states, it is indispensable to elucidate the interface band profiles of correlate…