Materials Literature
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In this study, the effect of uniaxial stretching on the thermal, oxygen barrier and mechanical properties of aliphatic polyamide 6 (PA6) and aromatic Poly(m‐xylene adipamide) (MXD6) nylon films as well as their in‐situ polymerized nanocomposites with 4 wt% clay were studied. Cast films were prepared by extrusion proce…
We address the question of control of the silicon carbide (SiC) steps and terraces under epitaxial graphene on SiC and demonstrate amorphous carbon (aC) corrals as an ideal method to pin SiC surface steps. aC is compatible with graphene growth, structurally stable at high temperatures, and can be removed after graphen…
The cavitation field in a cylindrical vessel bottom-insonified by a 19.7kHz large area transducer is studied experimentally. By adding controlled amounts of Poly-Ethylene Glycol (PEG) to water, the viscosity of the liquid is varied between one- and nine-fold the viscosity of pure water. For each liquid, and for variou…
Multiferroics in spintronics have opened up opportunities for future technological developments, particularly in the field of ferroelectric (FE)-ferromagnetic (FM) oxide interfaces with functionalities. We find strong exchange bias shifts (up to 84 Oe) upon field cooling in metal-oxide (Fe/BaTiO3) films combining FM a…
The dimeric Repressor of Primer (Rop) protein, a widely used model system for the study of coiled-coil 4-α-helical bundles, is characterized by a remarkable structural plasticity. Loop region mutations lead to a wide range of topologies, folding states, and altered physicochemical properties. A protein-folding study o…
Ring spun yarn hairiness can be reduced by such methods as spinning with a contact surface and Z-twisting the staple strand in a “left diagonal” yarn path (denoted as LDP). Actually, the LDP method already exists in sirofil spinning technology. In this study, mechanism analysis of controlling and trapping staple fiber…
This paper describes a measurement principle of determining thermoelectric properties based on obtaining current–voltage ( I – V ) curves under two different operating conditions: (1) constant temperature difference and (2) constant thermal input flux. In addition to thermoelectric figure-of-merit, other thermoelectri…
Novel porous magadiite/Al-magadiite heterostructures (PMH/PAMH) and aluminated derivatives of PMH ( x Al-PMH, x = Al/Si in feeding) were fabricated upon two-dimensional interlayer cosurfactant-directing TEOS hydrolysis–condensation–polymerization from synthetic Na-magadiite/Na-[Al]magadiite and postgrafting of Al into…
This paper presents results from the application of a Monte Carlo Markov Transition Rate Matrix Method to calculate forward and adjoint α eigenvalues and eigenfunctions of one-speed slabs, and perform eigenfunction expansion to approximate the time-dependent flux response to user-defined sources. The formulation of th…
Novel tetranuclear copper |2 + 4| cubanes 1 and 2 have been synthesized from the reaction of hydrated copper salts/precursors with N,O chelating β-ketoaminato ligands. Creation of 1 and 2 occurs by in situ generation of the tridentate chelating species HL1O(2-) via copper mediated C-O bond formation and dearomatizatio…
In this research, a hollow spindle spinning machine was used to manufacture the multifunctional metal hybrid yarns with stainless steel wire (SSW) as core material, antibacterial nylon (AN) filaments and bamboo charcoal polyester filaments (BC-PETs) as inner and outer wrapped yarn, respectively. The wrapping numbers o…
Resorcinarenes with three different quaternary ammonium headgroups were synthesized and evaluated for their ability to stabilize gold nanoparticles in organic and aqueous medium. Aqueous dispersions of citrate stabilized gold nanoparticles of dimensions up to 29 nm could be extracted into organic solvents by resorcina…
The synthesis of a vinylsulfide‐containing hydroxy acid (VSHA) from undecylenic fatty acid via thiol‐yne monoaddition is described. Metal‐ and enzymatic‐catalyzed polycondensation of VSHA is investigated to obtain functional polyesters with a view to further modification. Higher molecular weights are obtained when usi…
Tribological behaviour of induction hardened ISO 42CrMo4 low alloy steel was evaluated under unlubricated sliding conditions. The effect of hardening depth and test conditions on the friction and wear properties was investigated. The tribological tests were carried out on a reciprocating tribometer. Cylinder-on-flat c…
We have investigated the low-temperature magnetic state of face-centered-cubic (fcc) ${\mathrm{Cs}}_{3}{\mathrm{C}}_{60}$, a Mott insulator and the first molecular analog of a geometrically frustrated Heisenberg fcc antiferromagnet with $S=1/2$ spins. Specific heat studies reveal the presence of both long-range antife…
The noncovalent coating of carbon-based nanomaterials, such as carbon nanotubes, has important applications in nanotechnology and nanomedicine. The molecular modeling of this process can clarify its mechanism and provide a tool for the design of novel materials. In this paper, the coating mechanism of single-walled ca…
A voltammetric technique was used to produce a thin coating of polyaniline nanofibers (PANINFs) on ITO-coated glass substrates. Thereafter, bismuth sulfide nanoparticles (Bi2S3NPs) were chemically deposited on the PANINFs layer. The composite films were firmly adhered to the substrate and uniformly distributed. The fi…
Nanocrystals with more than one molecule in the unit cell will generally crystallize with incomplete unit cells on the crystal surface. Previous results show that the ensemble-averaged diffraction by such crystals consists of a usual Bragg component and two other Bragg-like components due to the incomplete unit cells.…
Gas-phase FTIR spectra of the ν6 (B-type) and the ν4 (C-type) fundamental bands of S2 N2 (D2h ) were recorded with a resolution of ≤0.004 cm(-1) and the vibrational spectrum of S2 N2 (D2h ) in solid Ar has been revisited. All IR-active fundamentals and four combination bands were assigned in excellent agreement with c…
The influences of uniaxial compressive stress on martensitic transformation were studied on a polycrystalline Ni-Mn-Ga bulk alloy prepared by directional solidification. Based upon the integrated in-situ neutron diffraction measurements, direct experimental evidence was obtained on the variant redistribution of seven-…